(search) Improve suggestions UX

Improve typeahead suggestions

ROADMAP.md

@@ -1,4 +1,4 @@
-# Roadmap 2024-2025
+# Roadmap 2025
 
 This is a roadmap with major features planned for Marginalia Search.
 
@@ -30,12 +30,6 @@ Retaining the ability to independently crawl the web is still strongly desirable
 The search engine has a bit of a problem showing spicy content mixed in with the results.  It would be desirable to have a way to filter this out.  It's likely something like a URL blacklist (e.g. [UT1](https://dsi.ut-capitole.fr/blacklists/index_en.php) )
 combined with naive bayesian filter would go a long way, or something more sophisticated...?
 
-## Web Design Overhaul
-
-The design is kinda clunky and hard to maintain, and needlessly outdated-looking.  
-
-In progress: PR [#127](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/127)  -- demo available at https://test.marginalia.nu/
-
 ## Additional Language Support
 
 It would be desirable if the search engine supported more languages than English.  This is partially about
@@ -62,8 +56,31 @@ filter for any API consumer.
 
 I've talked to the stract dev and he does not think it's a good idea to mimic their optics language, which is quite ad-hoc, but instead to work together to find some new common description language for this. 
 
+## Show favicons next to search results
+
+This is expected from search engines.  Basic proof of concept sketch of fetching this data has been done, but the feature is some way from being reality. 
+
+## Specialized crawler for github
+
+One of the search engine's biggest limitations right now is that it does not index github at all.   A specialized crawler that fetches at least the readme.md would go a long way toward providing search capabilities in this domain.
+
 # Completed
 
+## Web Design Overhaul (COMPLETED 2025-01)
+
+The design is kinda clunky and hard to maintain, and needlessly outdated-looking.  
+
+PR [#127](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/127)
+
+## Finalize RSS support (COMPLETED 2024-11)
+
+Marginalia has experimental RSS preview support for a few domains.  This works well and
+it should be extended to all domains.  It would also be interesting to offer search of the
+RSS data itself, or use the RSS set to feed a special live index that updates faster than the
+main dataset. 
+
+Completed with PR [#122](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/122) and PR [#125](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/125)
+
 ## Proper Position Index (COMPLETED 2024-09)
 
 The search engine uses a fixed width bit mask to indicate word positions.  It has the benefit
@@ -76,11 +93,3 @@ list, as is the civilized way of doing this.
 
 Completed with PR [#99](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/99)
 
-## Finalize RSS support (COMPLETED 2024-11)
-
-Marginalia has experimental RSS preview support for a few domains.  This works well and
-it should be extended to all domains.  It would also be interesting to offer search of the
-RSS data itself, or use the RSS set to feed a special live index that updates faster than the
-main dataset. 
-
-Completed with PR [#122](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/122) and PR [#125](https://github.com/MarginaliaSearch/MarginaliaSearch/pull/125)

build.gradle

@@ -5,7 +5,7 @@ plugins {
 
     // This is a workaround for a bug in the Jib plugin that causes it to stall randomly
     // https://github.com/GoogleContainerTools/jib/issues/3347
-    id 'com.google.cloud.tools.jib' version '3.4.3' apply(false)
+    id 'com.google.cloud.tools.jib' version '3.4.4' apply(false)
 }
 
 group 'marginalia'
@@ -43,12 +43,11 @@ subprojects.forEach {it ->
 }
 
 ext {
-    jvmVersion=23
-    dockerImageBase='container-registry.oracle.com/graalvm/jdk:23'
+    jvmVersion = 24
+    dockerImageBase='container-registry.oracle.com/graalvm/jdk:24'
     dockerImageTag='latest'
     dockerImageRegistry='marginalia'
-    jibVersion = '3.4.3'
-
+    jibVersion = '3.4.4'
 }
 
 idea {

code/common/config/java/nu/marginalia/LanguageModels.java

@@ -24,58 +24,4 @@ public class LanguageModels {
         this.fasttextLanguageModel = fasttextLanguageModel;
         this.segments = segments;
     }
-
-    public static LanguageModelsBuilder builder() {
-        return new LanguageModelsBuilder();
-    }
-
-    public static class LanguageModelsBuilder {
-        private Path termFrequencies;
-        private Path openNLPSentenceDetectionData;
-        private Path posRules;
-        private Path posDict;
-        private Path fasttextLanguageModel;
-        private Path segments;
-
-        LanguageModelsBuilder() {
-        }
-
-        public LanguageModelsBuilder termFrequencies(Path termFrequencies) {
-            this.termFrequencies = termFrequencies;
-            return this;
-        }
-
-        public LanguageModelsBuilder openNLPSentenceDetectionData(Path openNLPSentenceDetectionData) {
-            this.openNLPSentenceDetectionData = openNLPSentenceDetectionData;
-            return this;
-        }
-
-        public LanguageModelsBuilder posRules(Path posRules) {
-            this.posRules = posRules;
-            return this;
-        }
-
-        public LanguageModelsBuilder posDict(Path posDict) {
-            this.posDict = posDict;
-            return this;
-        }
-
-        public LanguageModelsBuilder fasttextLanguageModel(Path fasttextLanguageModel) {
-            this.fasttextLanguageModel = fasttextLanguageModel;
-            return this;
-        }
-
-        public LanguageModelsBuilder segments(Path segments) {
-            this.segments = segments;
-            return this;
-        }
-
-        public LanguageModels build() {
-            return new LanguageModels(this.termFrequencies, this.openNLPSentenceDetectionData, this.posRules, this.posDict, this.fasttextLanguageModel, this.segments);
-        }
-
-        public String toString() {
-            return "LanguageModels.LanguageModelsBuilder(termFrequencies=" + this.termFrequencies + ", openNLPSentenceDetectionData=" + this.openNLPSentenceDetectionData + ", posRules=" + this.posRules + ", posDict=" + this.posDict + ", fasttextLanguageModel=" + this.fasttextLanguageModel + ", segments=" + this.segments + ")";
-        }
-    }
 }

code/common/db/java/nu/marginalia/db/DbDomainQueries.java

@@ -20,7 +20,11 @@ public class DbDomainQueries {
     private final HikariDataSource dataSource;
 
     private static final Logger logger = LoggerFactory.getLogger(DbDomainQueries.class);
+
     private final Cache<EdgeDomain, Integer> domainIdCache = CacheBuilder.newBuilder().maximumSize(10_000).build();
+    private final Cache<EdgeDomain, DomainIdWithNode> domainWithNodeCache = CacheBuilder.newBuilder().maximumSize(10_000).build();
+    private final Cache<Integer, EdgeDomain> domainNameCache = CacheBuilder.newBuilder().maximumSize(10_000).build();
+    private final Cache<String, List<DomainWithNode>> siblingsCache = CacheBuilder.newBuilder().maximumSize(10_000).build();
 
     @Inject
     public DbDomainQueries(HikariDataSource dataSource)
@@ -30,16 +34,21 @@ public class DbDomainQueries {
 
 
     public Integer getDomainId(EdgeDomain domain) throws NoSuchElementException {
-        try (var connection = dataSource.getConnection()) {
-
+        try {
             return domainIdCache.get(domain, () -> {
-                try (var stmt = connection.prepareStatement("SELECT ID FROM EC_DOMAIN WHERE DOMAIN_NAME=?")) {
+                try (var connection = dataSource.getConnection();
+                     var stmt = connection.prepareStatement("SELECT ID FROM EC_DOMAIN WHERE DOMAIN_NAME=?")) {
+
                     stmt.setString(1, domain.toString());
                     var rsp = stmt.executeQuery();
                     if (rsp.next()) {
                         return rsp.getInt(1);
                     }
                 }
+                catch (SQLException ex) {
+                    throw new RuntimeException(ex);
+                }
+
                 throw new NoSuchElementException();
             });
         }
@@ -49,9 +58,34 @@ public class DbDomainQueries {
         catch (ExecutionException ex) {
             throw new RuntimeException(ex.getCause());
         }
+    }
+
+
+    public DomainIdWithNode getDomainIdWithNode(EdgeDomain domain) throws NoSuchElementException {
+        try {
+            return domainWithNodeCache.get(domain, () -> {
+                try (var connection = dataSource.getConnection();
+                     var stmt = connection.prepareStatement("SELECT ID, NODE_AFFINITY FROM EC_DOMAIN WHERE DOMAIN_NAME=?")) {
+
+                    stmt.setString(1, domain.toString());
+                    var rsp = stmt.executeQuery();
+                    if (rsp.next()) {
+                        return new DomainIdWithNode(rsp.getInt(1), rsp.getInt(2));
+                    }
+                }
                 catch (SQLException ex) {
                     throw new RuntimeException(ex);
                 }
+
+                throw new NoSuchElementException();
+            });
+        }
+        catch (UncheckedExecutionException ex) {
+            throw new NoSuchElementException();
+        }
+        catch (ExecutionException ex) {
+            throw new RuntimeException(ex.getCause());
+        }
     }
 
     public OptionalInt tryGetDomainId(EdgeDomain domain) {
@@ -84,31 +118,38 @@ public class DbDomainQueries {
     }
 
     public Optional<EdgeDomain> getDomain(int id) {
-        try (var connection = dataSource.getConnection()) {
 
+        EdgeDomain existing = domainNameCache.getIfPresent(id);
+        if (existing != null) {
+            return Optional.of(existing);
+        }
+
+        try (var connection = dataSource.getConnection()) {
             try (var stmt = connection.prepareStatement("SELECT DOMAIN_NAME FROM EC_DOMAIN WHERE ID=?")) {
                 stmt.setInt(1, id);
                 var rsp = stmt.executeQuery();
                 if (rsp.next()) {
-                    return Optional.of(new EdgeDomain(rsp.getString(1)));
+                    var val = new EdgeDomain(rsp.getString(1));
+                    domainNameCache.put(id, val);
+                    return Optional.of(val);
                 }
                 return Optional.empty();
             }
         }
-        catch (UncheckedExecutionException ex) {
-            throw new RuntimeException(ex.getCause());
-        }
         catch (SQLException ex) {
             throw new RuntimeException(ex);
         }
     }
 
-    public List<DomainWithNode> otherSubdomains(EdgeDomain domain, int cnt) {
+    public List<DomainWithNode> otherSubdomains(EdgeDomain domain, int cnt) throws ExecutionException {
+        String topDomain = domain.topDomain;
+
+        return siblingsCache.get(topDomain, () -> {
             List<DomainWithNode> ret = new ArrayList<>();
 
             try (var conn = dataSource.getConnection();
                  var stmt = conn.prepareStatement("SELECT DOMAIN_NAME, NODE_AFFINITY FROM EC_DOMAIN WHERE DOMAIN_TOP = ? LIMIT ?")) {
-            stmt.setString(1, domain.topDomain);
+                stmt.setString(1, topDomain);
                 stmt.setInt(2, cnt);
 
                 var rs = stmt.executeQuery();
@@ -123,8 +164,9 @@ public class DbDomainQueries {
             } catch (SQLException e) {
                 logger.error("Failed to get domain neighbors");
             }
-
             return ret;
+        });
+
     }
 
     public record DomainWithNode (EdgeDomain domain, int nodeAffinity) {
@@ -132,4 +174,6 @@ public class DbDomainQueries {
             return nodeAffinity > 0;
         }
     }
+
+    public record DomainIdWithNode (int domainId, int nodeAffinity) { }
 }

code/common/db/java/nu/marginalia/db/DbDomainStatsExportMultitool.java

@@ -1,118 +0,0 @@
-package nu.marginalia.db;
-
-import com.zaxxer.hikari.HikariDataSource;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.OptionalInt;
-
-/** Class used in exporting data.  This is intended to be used for a brief time
- * and then discarded, not kept around as a service.
- */
-public class DbDomainStatsExportMultitool implements AutoCloseable {
-    private final Connection connection;
-    private final int nodeId;
-    private final PreparedStatement knownUrlsQuery;
-    private final PreparedStatement visitedUrlsQuery;
-    private final PreparedStatement goodUrlsQuery;
-    private final PreparedStatement domainNameToId;
-
-    private final PreparedStatement allDomainsQuery;
-    private final PreparedStatement crawlQueueDomains;
-    private final PreparedStatement indexedDomainsQuery;
-
-    public DbDomainStatsExportMultitool(HikariDataSource dataSource, int nodeId) throws SQLException {
-        this.connection = dataSource.getConnection();
-        this.nodeId = nodeId;
-
-        knownUrlsQuery = connection.prepareStatement("""
-                SELECT KNOWN_URLS
-                FROM EC_DOMAIN INNER JOIN DOMAIN_METADATA
-                    ON EC_DOMAIN.ID=DOMAIN_METADATA.ID
-                WHERE DOMAIN_NAME=?
-                """);
-        visitedUrlsQuery = connection.prepareStatement("""
-                SELECT VISITED_URLS
-                FROM EC_DOMAIN INNER JOIN DOMAIN_METADATA
-                    ON EC_DOMAIN.ID=DOMAIN_METADATA.ID
-                WHERE DOMAIN_NAME=?
-                """);
-        goodUrlsQuery = connection.prepareStatement("""
-                SELECT GOOD_URLS
-                FROM EC_DOMAIN INNER JOIN DOMAIN_METADATA
-                    ON EC_DOMAIN.ID=DOMAIN_METADATA.ID
-                WHERE DOMAIN_NAME=?
-                """);
-        domainNameToId = connection.prepareStatement("""
-                SELECT ID
-                FROM EC_DOMAIN
-                WHERE DOMAIN_NAME=?
-                """);
-        allDomainsQuery = connection.prepareStatement("""
-                SELECT DOMAIN_NAME
-                FROM EC_DOMAIN
-                """);
-        crawlQueueDomains = connection.prepareStatement("""
-                SELECT DOMAIN_NAME
-                FROM CRAWL_QUEUE
-                """);
-        indexedDomainsQuery = connection.prepareStatement("""
-                SELECT DOMAIN_NAME
-                FROM EC_DOMAIN
-                WHERE INDEXED > 0
-                """);
-    }
-
-    public OptionalInt getVisitedUrls(String domainName) throws SQLException {
-        return executeNameToIntQuery(domainName, visitedUrlsQuery);
-    }
-
-    public OptionalInt getDomainId(String domainName) throws SQLException {
-        return executeNameToIntQuery(domainName, domainNameToId);
-    }
-
-    public List<String> getCrawlQueueDomains() throws SQLException {
-        return executeListQuery(crawlQueueDomains, 100);
-    }
-    public List<String> getAllIndexedDomains() throws SQLException {
-        return executeListQuery(indexedDomainsQuery, 100_000);
-    }
-
-    private OptionalInt executeNameToIntQuery(String domainName, PreparedStatement statement)
-            throws SQLException {
-        statement.setString(1, domainName);
-        var rs = statement.executeQuery();
-
-        if (rs.next()) {
-            return OptionalInt.of(rs.getInt(1));
-        }
-
-        return OptionalInt.empty();
-    }
-
-    private List<String> executeListQuery(PreparedStatement statement, int sizeHint) throws SQLException {
-        List<String> ret = new ArrayList<>(sizeHint);
-
-        var rs = statement.executeQuery();
-
-        while (rs.next()) {
-            ret.add(rs.getString(1));
-        }
-
-        return ret;
-    }
-
-    @Override
-    public void close() throws SQLException {
-        knownUrlsQuery.close();
-        goodUrlsQuery.close();
-        visitedUrlsQuery.close();
-        allDomainsQuery.close();
-        crawlQueueDomains.close();
-        domainNameToId.close();
-        connection.close();
-    }
-}

code/common/model/java/nu/marginalia/model/EdgeDomain.java

@@ -14,7 +14,7 @@ public class EdgeDomain implements Serializable {
     @Nonnull
     public final String topDomain;
 
-    public EdgeDomain(String host) {
+    public EdgeDomain(@Nonnull String host) {
         Objects.requireNonNull(host, "domain name must not be null");
 
         host = host.toLowerCase();
@@ -61,6 +61,10 @@ public class EdgeDomain implements Serializable {
         this.topDomain = topDomain;
     }
 
+    public static String getTopDomain(String host) {
+        return new EdgeDomain(host).topDomain;
+    }
+
     private boolean looksLikeGovTld(String host) {
         if (host.length() < 8)
             return false;
@@ -116,24 +120,6 @@ public class EdgeDomain implements Serializable {
         return topDomain.substring(0, cutPoint).toLowerCase();
     }
 
-    public String getLongDomainKey() {
-        StringBuilder ret = new StringBuilder();
-
-        int cutPoint = topDomain.indexOf('.');
-        if (cutPoint < 0) {
-            ret.append(topDomain);
-        } else {
-            ret.append(topDomain, 0, cutPoint);
-        }
-
-        if (!subDomain.isEmpty() && !"www".equals(subDomain)) {
-            ret.append(":");
-            ret.append(subDomain);
-        }
-
-        return ret.toString().toLowerCase();
-    }
-
     /** If possible, try to provide an alias domain,
      * i.e. a domain name that is very likely to link to this one
      * */

code/common/service/java/nu/marginalia/process/log/WorkLog.java

@@ -10,7 +10,9 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.time.LocalDateTime;
-import java.util.*;
+import java.util.HashSet;
+import java.util.Optional;
+import java.util.Set;
 import java.util.function.Function;
 
 /** WorkLog is a journal of work done by a process,
@@ -61,6 +63,12 @@ public class WorkLog implements AutoCloseable, Closeable {
         return new WorkLoadIterable<>(logFile, mapper);
     }
 
+    public static int countEntries(Path crawlerLog) throws IOException{
+        try (var linesStream = Files.lines(crawlerLog)) {
+            return (int) linesStream.filter(WorkLogEntry::isJobId).count();
+        }
+    }
+
     // Use synchro over concurrent set to avoid competing writes
     // - correct is better than fast here, it's sketchy enough to use
     // a PrintWriter

code/common/service/java/nu/marginalia/service/module/DatabaseModule.java

@@ -89,7 +89,7 @@ public class DatabaseModule extends AbstractModule {
             config.addDataSourceProperty("prepStmtCacheSize", "250");
             config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");
 
-            config.setMaximumPoolSize(5);
+            config.setMaximumPoolSize(Integer.getInteger("db.poolSize", 5));
             config.setMinimumIdle(2);
 
             config.setMaxLifetime(Duration.ofMinutes(9).toMillis());

code/common/service/java/nu/marginalia/service/module/ServiceConfigurationModule.java

@@ -6,6 +6,7 @@ import nu.marginalia.service.ServiceId;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.IOException;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.util.Enumeration;
@@ -115,11 +116,12 @@ public class ServiceConfigurationModule extends AbstractModule {
         }
     }
 
-    public static String getLocalNetworkIP() throws Exception {
+    public static String getLocalNetworkIP() throws IOException {
         Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
 
         while (nets.hasMoreElements()) {
             NetworkInterface netif = nets.nextElement();
+            logger.info("Considering network interface {}:  Up? {},  Loopback? {}", netif.getDisplayName(), netif.isUp(), netif.isLoopback());
             if (!netif.isUp() || netif.isLoopback()) {
                 continue;
             }
@@ -127,6 +129,7 @@ public class ServiceConfigurationModule extends AbstractModule {
             Enumeration<InetAddress> inetAddresses = netif.getInetAddresses();
             while (inetAddresses.hasMoreElements()) {
                 InetAddress addr = inetAddresses.nextElement();
+                logger.info("Considering address {}: SiteLocal? {}, Loopback? {}", addr.getHostAddress(), addr.isSiteLocalAddress(), addr.isLoopbackAddress());
                 if (addr.isSiteLocalAddress() && !addr.isLoopbackAddress()) {
                     return addr.getHostAddress();
                 }

code/common/service/java/nu/marginalia/service/server/JoobyService.java

@@ -15,6 +15,7 @@ import org.slf4j.LoggerFactory;
 import org.slf4j.Marker;
 import org.slf4j.MarkerFactory;
 
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
@@ -106,9 +107,12 @@ public class JoobyService {
                 config.externalAddress());
 
         // FIXME:  This won't work outside of docker, may need to submit a PR to jooby to allow classpaths here
+        if (Files.exists(Path.of("/app/resources/jte")) || Files.exists(Path.of("/app/classes/jte-precompiled"))) {
             jooby.install(new JteModule(Path.of("/app/resources/jte"), Path.of("/app/classes/jte-precompiled")));
+        }
+        if (Files.exists(Path.of("/app/resources/static"))) {
             jooby.assets("/*", Paths.get("/app/resources/static"));
-
+        }
         var options = new ServerOptions();
         options.setHost(config.bindAddress());
         options.setPort(restEndpoint.port());

code/common/service/java/nu/marginalia/service/server/MetricsServer.java

@@ -6,17 +6,22 @@ import nu.marginalia.service.module.ServiceConfiguration;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.servlet.ServletContextHandler;
 import org.eclipse.jetty.servlet.ServletHolder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.net.InetSocketAddress;
 
 public class MetricsServer {
 
+    private static final Logger logger = LoggerFactory.getLogger(MetricsServer.class);
+
     @Inject
-    public MetricsServer(ServiceConfiguration configuration) throws Exception {
+    public MetricsServer(ServiceConfiguration configuration) {
         // If less than zero, we forego setting up a metrics server
         if (configuration.metricsPort() < 0)
             return;
 
+        try {
             Server server = new Server(new InetSocketAddress(configuration.bindAddress(), configuration.metricsPort()));
 
             ServletContextHandler context = new ServletContextHandler();
@@ -25,6 +30,12 @@ public class MetricsServer {
 
             context.addServlet(new ServletHolder(new MetricsServlet()), "/metrics");
 
+            logger.info("MetricsServer listening on {}:{}", configuration.bindAddress(), configuration.metricsPort());
+
             server.start();
         }
+        catch (Exception|NoSuchMethodError ex) {
+            logger.error("Failed to set up metrics server", ex);
+        }
+    }
 }

code/common/service/java/nu/marginalia/service/server/RateLimiter.java

@@ -35,21 +35,8 @@ public class RateLimiter {
     }
 
 
-    public static RateLimiter forExpensiveRequest() {
-        return new RateLimiter(5, 10);
-    }
-
     public static RateLimiter custom(int perMinute) {
-        return new RateLimiter(perMinute, 60);
-    }
-
-    public static RateLimiter forSpamBots() {
-        return new RateLimiter(120, 3600);
-    }
-
-
-    public static RateLimiter forLogin() {
-        return new RateLimiter(3, 15);
+        return new RateLimiter(4 * perMinute, perMinute);
     }
 
     private void cleanIdleBuckets() {
@@ -62,7 +49,7 @@ public class RateLimiter {
     }
 
     private Bucket createBucket() {
-        var refill = Refill.greedy(1, Duration.ofSeconds(refillRate));
+        var refill = Refill.greedy(refillRate, Duration.ofSeconds(60));
         var bw = Bandwidth.classic(capacity, refill);
         return Bucket.builder().addLimit(bw).build();
     }

code/common/service/resources/log4j2-json.xml

@@ -5,6 +5,7 @@
             <Filters>
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/wmsa-${sys:service-name}-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/wmsa-${sys:service-name}-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
@@ -13,9 +14,20 @@
             <Filters>
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
             <SizeBasedTriggeringPolicy size="10MB" />
         </RollingFile>
+        <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/crawler-audit-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/crawler-audit-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
+                     ignoreExceptions="false">
+            <PatternLayout>
+                <Pattern>%d{yyyy-MM-dd HH:mm:ss,SSS}: %msg{nolookups}%n</Pattern>
+            </PatternLayout>
+            <SizeBasedTriggeringPolicy size="100MB" />
+            <Filters>
+                <MarkerFilter marker="CRAWLER" onMatch="ALLOW" onMismatch="DENY" />
+            </Filters>
+        </RollingFile>
     </Appenders>
     <Loggers>
         <Logger name="org.apache.zookeeper" level="WARN" />

code/common/service/resources/log4j2-prod.xml

@@ -5,6 +5,7 @@
             <Filters>
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
         </Console>
         <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/wmsa-${sys:service-name}-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/wmsa-${sys:service-name}-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
@@ -17,6 +18,17 @@
                 <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+            </Filters>
+        </RollingFile>
+        <RollingFile name="LogToFile" fileName="${env:WMSA_LOG_DIR:-/var/log/wmsa}/crawler-audit-${env:WMSA_SERVICE_NODE:-0}.log" filePattern="/var/log/wmsa/crawler-audit-${env:WMSA_SERVICE_NODE:-0}-log-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz"
+                     ignoreExceptions="false">
+            <PatternLayout>
+                <Pattern>%d{yyyy-MM-dd HH:mm:ss,SSS}: %msg{nolookups}%n</Pattern>
+            </PatternLayout>
+            <SizeBasedTriggeringPolicy size="100MB" />
+            <Filters>
+                <MarkerFilter marker="CRAWLER" onMatch="ALLOW" onMismatch="DENY" />
             </Filters>
         </RollingFile>
     </Appenders>

code/common/service/test/nu/marginalia/service/discovery/ZkServiceRegistryTest.java

@@ -25,7 +25,7 @@ import static org.mockito.Mockito.when;
 class ZkServiceRegistryTest {
     private static final int ZOOKEEPER_PORT = 2181;
     private static final GenericContainer<?> zookeeper =
-            new GenericContainer<>("zookeeper:3.8.0")
+            new GenericContainer<>("zookeeper:3.8")
                     .withExposedPorts(ZOOKEEPER_PORT);
 
     List<ZkServiceRegistry> registries = new ArrayList<>();

code/execution/java/nu/marginalia/actor/ExecutorActor.java

@@ -20,6 +20,7 @@ public enum ExecutorActor {
     EXPORT_FEEDS(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     EXPORT_SAMPLE_DATA(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     DOWNLOAD_SAMPLE(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
+    MIGRATE_CRAWL_DATA(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
 
     PROC_CONVERTER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD),
     PROC_LOADER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD),

code/execution/java/nu/marginalia/actor/ExecutorActorControlService.java

@@ -66,6 +66,7 @@ public class ExecutorActorControlService {
                                        DownloadSampleActor downloadSampleActor,
                                        ScrapeFeedsActor scrapeFeedsActor,
                                        ExecutorActorStateMachines stateMachines,
+                                       MigrateCrawlDataActor migrateCrawlDataActor,
                                        ExportAllPrecessionActor exportAllPrecessionActor,
                                        UpdateRssActor updateRssActor) throws SQLException {
         this.messageQueueFactory = messageQueueFactory;
@@ -107,6 +108,8 @@ public class ExecutorActorControlService {
         register(ExecutorActor.SCRAPE_FEEDS, scrapeFeedsActor);
         register(ExecutorActor.UPDATE_RSS, updateRssActor);
 
+        register(ExecutorActor.MIGRATE_CRAWL_DATA, migrateCrawlDataActor);
+
         if (serviceConfiguration.node() == 1) {
             register(ExecutorActor.PREC_EXPORT_ALL, exportAllPrecessionActor);
         }

code/execution/java/nu/marginalia/actor/proc/UpdateRssActor.java

@@ -14,6 +14,8 @@ import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.nodecfg.NodeConfigurationService;
 import nu.marginalia.nodecfg.model.NodeProfile;
 import nu.marginalia.service.module.ServiceConfiguration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.time.Duration;
 import java.time.LocalDateTime;
@@ -29,6 +31,7 @@ public class UpdateRssActor extends RecordActorPrototype {
 
     private final NodeConfigurationService nodeConfigurationService;
     private final MqPersistence persistence;
+    private static final Logger logger = LoggerFactory.getLogger(UpdateRssActor.class);
 
     @Inject
     public UpdateRssActor(Gson gson,
@@ -101,8 +104,8 @@ public class UpdateRssActor extends RecordActorPrototype {
             case UpdateRefresh(int count, long msgId) -> {
                 MqMessage msg = persistence.waitForMessageTerminalState(msgId, Duration.ofSeconds(10), Duration.ofHours(12));
                 if (msg == null) {
-                    // Retry the update
-                    yield new Error("Failed to update feeds: message not found");
+                    logger.warn("UpdateRefresh is taking a very long time");
+                    yield new UpdateRefresh(count, msgId);
                 } else if (msg.state() != MqMessageState.OK) {
                     // Retry the update
                     yield new Error("Failed to update feeds: " + msg.state());
@@ -119,8 +122,8 @@ public class UpdateRssActor extends RecordActorPrototype {
             case UpdateClean(long msgId) -> {
                 MqMessage msg = persistence.waitForMessageTerminalState(msgId, Duration.ofSeconds(10), Duration.ofHours(12));
                 if (msg == null) {
-                    // Retry the update
-                    yield new Error("Failed to update feeds: message not found");
+                    logger.warn("UpdateClean is taking a very long time");
+                    yield new UpdateClean(msgId);
                 } else if (msg.state() != MqMessageState.OK) {
                     // Retry the update
                     yield new Error("Failed to update feeds: " + msg.state());

code/execution/java/nu/marginalia/actor/task/DownloadSampleActor.java

@@ -8,6 +8,7 @@ import nu.marginalia.actor.state.ActorResumeBehavior;
 import nu.marginalia.actor.state.ActorStep;
 import nu.marginalia.actor.state.Resume;
 import nu.marginalia.service.control.ServiceEventLog;
+import nu.marginalia.service.control.ServiceHeartbeat;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorage;
 import nu.marginalia.storage.model.FileStorageId;
@@ -19,6 +20,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.*;
+import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URL;
@@ -32,6 +34,7 @@ public class DownloadSampleActor extends RecordActorPrototype {
 
     private final FileStorageService storageService;
     private final ServiceEventLog eventLog;
+    private final ServiceHeartbeat heartbeat;
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
     @Resume(behavior = ActorResumeBehavior.ERROR)
@@ -66,15 +69,39 @@ public class DownloadSampleActor extends RecordActorPrototype {
 
                 Files.deleteIfExists(Path.of(tarFileName));
 
-                try (var is = new BufferedInputStream(new URI(downloadURI).toURL().openStream());
+                HttpURLConnection urlConnection = (HttpURLConnection) new URI(downloadURI).toURL().openConnection();
+
+                try (var hb = heartbeat.createServiceAdHocTaskHeartbeat("Downloading sample")) {
+                    long size = urlConnection.getContentLengthLong();
+                    byte[] buffer = new byte[8192];
+
+                    try (var is = new BufferedInputStream(urlConnection.getInputStream());
                          var os = new BufferedOutputStream(Files.newOutputStream(Path.of(tarFileName), StandardOpenOption.CREATE))) {
-                    is.transferTo(os);
+                        long copiedSize = 0;
+
+                        while (copiedSize < size) {
+                            int read = is.read(buffer);
+
+                            if (read < 0) // We've been promised a file of length 'size'
+                                throw new IOException("Unexpected end of stream");
+
+                            os.write(buffer, 0, read);
+                            copiedSize += read;
+
+                            // Update progress bar
+                            hb.progress(String.format("%d MB", copiedSize / 1024 / 1024), (int) (copiedSize / 1024), (int) (size / 1024));
+                        }
+                    }
+
                 }
                 catch (Exception ex) {
                     eventLog.logEvent(DownloadSampleActor.class, "Error downloading sample");
                     logger.error("Error downloading sample", ex);
                     yield new Error();
                 }
+                finally {
+                    urlConnection.disconnect();
+                }
 
                 eventLog.logEvent(DownloadSampleActor.class, "Download complete");
                 yield new Extract(fileStorageId, tarFileName);
@@ -170,11 +197,12 @@ public class DownloadSampleActor extends RecordActorPrototype {
     @Inject
     public DownloadSampleActor(Gson gson,
                                FileStorageService storageService,
-                               ServiceEventLog eventLog)
+                               ServiceEventLog eventLog, ServiceHeartbeat heartbeat)
     {
         super(gson);
         this.storageService = storageService;
         this.eventLog = eventLog;
+        this.heartbeat = heartbeat;
     }
 
 }

code/execution/java/nu/marginalia/actor/task/MigrateCrawlDataActor.java

@@ -0,0 +1,150 @@
+package nu.marginalia.actor.task;
+
+import com.google.gson.Gson;
+import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
+import nu.marginalia.actor.prototype.RecordActorPrototype;
+import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.io.CrawlerOutputFile;
+import nu.marginalia.process.log.WorkLog;
+import nu.marginalia.process.log.WorkLogEntry;
+import nu.marginalia.service.control.ServiceHeartbeat;
+import nu.marginalia.slop.SlopCrawlDataRecord;
+import nu.marginalia.storage.FileStorageService;
+import nu.marginalia.storage.model.FileStorage;
+import nu.marginalia.storage.model.FileStorageId;
+import org.apache.logging.log4j.util.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.Map;
+import java.util.Optional;
+import java.util.function.Function;
+
+@Singleton
+public class MigrateCrawlDataActor extends RecordActorPrototype {
+
+    private final FileStorageService fileStorageService;
+    private final ServiceHeartbeat serviceHeartbeat;
+    private static final Logger logger = LoggerFactory.getLogger(MigrateCrawlDataActor.class);
+
+    @Inject
+    public MigrateCrawlDataActor(Gson gson, FileStorageService fileStorageService, ServiceHeartbeat serviceHeartbeat) {
+        super(gson);
+
+        this.fileStorageService = fileStorageService;
+        this.serviceHeartbeat = serviceHeartbeat;
+    }
+
+    public record Run(long fileStorageId) implements ActorStep {}
+
+    @Override
+    public ActorStep transition(ActorStep self) throws Exception {
+        return switch (self) {
+            case Run(long fileStorageId) -> {
+
+                FileStorage storage = fileStorageService.getStorage(FileStorageId.of(fileStorageId));
+                Path root = storage.asPath();
+
+                Path crawlerLog = root.resolve("crawler.log");
+                Path newCrawlerLog = Files.createTempFile(root, "crawler", ".migrate.log");
+
+                int totalEntries = WorkLog.countEntries(crawlerLog);
+
+                try (WorkLog workLog = new WorkLog(newCrawlerLog);
+                     var heartbeat = serviceHeartbeat.createServiceAdHocTaskHeartbeat("Migrating")
+                ) {
+                    int entryIdx = 0;
+
+                    for (Map.Entry<WorkLogEntry, Path> item : WorkLog.iterableMap(crawlerLog, new CrawlDataLocator(root))) {
+
+                        final WorkLogEntry entry = item.getKey();
+                        final Path inputPath = item.getValue();
+
+                        Path outputPath = inputPath;
+                        heartbeat.progress("Migrating" + inputPath.getFileName(), entryIdx++, totalEntries);
+
+                        if (inputPath.toString().endsWith(".parquet")) {
+                            String domain = entry.id();
+                            String id = Integer.toHexString(domain.hashCode());
+
+                            outputPath = CrawlerOutputFile.createSlopPath(root, id, domain);
+
+                            if (Files.exists(inputPath)) {
+                                try {
+                                    SlopCrawlDataRecord.convertFromParquet(inputPath, outputPath);
+                                    Files.deleteIfExists(inputPath);
+                                } catch (Exception ex) {
+                                    outputPath = inputPath; // don't update the work log on error
+                                    logger.error("Failed to convert " + inputPath, ex);
+                                }
+                            }
+                            else if (!Files.exists(inputPath) && !Files.exists(outputPath)) {
+                                // if the input file is missing, and the output file is missing, we just write the log
+                                // record identical to the old one
+                                outputPath = inputPath;
+                            }
+                        }
+
+                        // Write a log entry for the (possibly) converted file
+                        workLog.setJobToFinished(entry.id(), outputPath.toString(), entry.cnt());
+                    }
+                }
+
+                Path oldCrawlerLog = Files.createTempFile(root, "crawler-", ".migrate.old.log");
+                Files.move(crawlerLog, oldCrawlerLog, StandardCopyOption.REPLACE_EXISTING);
+                Files.move(newCrawlerLog, crawlerLog);
+
+                yield new End();
+            }
+            default -> new Error();
+        };
+    }
+
+    private static class CrawlDataLocator implements Function<WorkLogEntry, Optional<Map.Entry<WorkLogEntry, Path>>> {
+
+        private final Path crawlRootDir;
+
+        CrawlDataLocator(Path crawlRootDir) {
+            this.crawlRootDir = crawlRootDir;
+        }
+
+        @Override
+        public Optional<Map.Entry<WorkLogEntry, Path>> apply(WorkLogEntry entry) {
+            var path = getCrawledFilePath(crawlRootDir, entry.path());
+
+            if (!Files.exists(path)) {
+                return Optional.empty();
+            }
+
+            try {
+                return Optional.of(Map.entry(entry, path));
+            }
+            catch (Exception ex) {
+                return Optional.empty();
+            }
+        }
+
+        private Path getCrawledFilePath(Path crawlDir, String fileName) {
+            int sp = fileName.lastIndexOf('/');
+
+            // Normalize the filename
+            if (sp >= 0 && sp + 1< fileName.length())
+                fileName = fileName.substring(sp + 1);
+            if (fileName.length() < 4)
+                fileName = Strings.repeat("0", 4 - fileName.length()) + fileName;
+
+            String sp1 = fileName.substring(0, 2);
+            String sp2 = fileName.substring(2, 4);
+            return crawlDir.resolve(sp1).resolve(sp2).resolve(fileName);
+        }
+    }
+
+    @Override
+    public String describe() {
+        return "Migrates crawl data to the latest format";
+    }
+}

code/functions/favicon/api/build.gradle

@@ -0,0 +1,47 @@
+plugins {
+    id 'java'
+
+    id "com.google.protobuf" version "0.9.4"
+    id 'jvm-test-suite'
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
+    }
+}
+
+jar.archiveBaseName = 'favicon-api'
+
+apply from: "$rootProject.projectDir/protobuf.gradle"
+apply from: "$rootProject.projectDir/srcsets.gradle"
+
+dependencies {
+    implementation project(':code:common:model')
+    implementation project(':code:common:config')
+    implementation project(':code:common:service')
+
+    implementation libs.bundles.slf4j
+
+    implementation libs.prometheus
+    implementation libs.notnull
+    implementation libs.guava
+    implementation dependencies.create(libs.guice.get()) {
+        exclude group: 'com.google.guava'
+    }
+    implementation libs.gson
+    implementation libs.bundles.protobuf
+    implementation libs.guava
+    libs.bundles.grpc.get().each {
+        implementation dependencies.create(it) {
+            exclude group: 'com.google.guava'
+        }
+    }
+
+
+
+    testImplementation libs.bundles.slf4j.test
+    testImplementation libs.bundles.junit
+    testImplementation libs.mockito
+
+}

code/functions/favicon/api/java/nu/marginalia/api/favicon/FaviconClient.java

@@ -0,0 +1,39 @@
+package nu.marginalia.api.favicon;
+
+import com.google.inject.Inject;
+import nu.marginalia.service.client.GrpcChannelPoolFactory;
+import nu.marginalia.service.client.GrpcMultiNodeChannelPool;
+import nu.marginalia.service.discovery.property.ServiceKey;
+import nu.marginalia.service.discovery.property.ServicePartition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Optional;
+
+public class FaviconClient {
+    private static final Logger logger = LoggerFactory.getLogger(FaviconClient.class);
+
+    private final GrpcMultiNodeChannelPool<FaviconAPIGrpc.FaviconAPIBlockingStub> channelPool;
+
+    @Inject
+    public FaviconClient(GrpcChannelPoolFactory factory) {
+        this.channelPool = factory.createMulti(
+                ServiceKey.forGrpcApi(FaviconAPIGrpc.class, ServicePartition.multi()),
+                FaviconAPIGrpc::newBlockingStub);
+    }
+
+    public record FaviconData(byte[] bytes, String contentType) {}
+
+
+    public Optional<FaviconData> getFavicon(String domain, int node) {
+        RpcFaviconResponse rsp = channelPool.call(FaviconAPIGrpc.FaviconAPIBlockingStub::getFavicon)
+                .forNode(node)
+                .run(RpcFaviconRequest.newBuilder().setDomain(domain).build());
+
+        if (rsp.getData().isEmpty())
+            return Optional.empty();
+
+        return Optional.of(new FaviconData(rsp.getData().toByteArray(), rsp.getContentType()));
+    }
+
+}

code/functions/favicon/api/src/main/protobuf/favicon.proto

@@ -0,0 +1,20 @@
+syntax="proto3";
+package marginalia.api.favicon;
+
+option java_package="nu.marginalia.api.favicon";
+option java_multiple_files=true;
+
+service FaviconAPI {
+  /** Fetches information about a domain. */
+  rpc getFavicon(RpcFaviconRequest) returns (RpcFaviconResponse) {}
+}
+
+message RpcFaviconRequest {
+  string domain = 1;
+}
+
+message RpcFaviconResponse {
+  string domain = 1;
+  bytes data = 2;
+  string contentType = 3;
+}

code/functions/favicon/build.gradle

@@ -0,0 +1,49 @@
+plugins {
+    id 'java'
+
+    id 'application'
+    id 'jvm-test-suite'
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
+    }
+}
+
+apply from: "$rootProject.projectDir/srcsets.gradle"
+
+dependencies {
+    implementation project(':code:common:config')
+    implementation project(':code:common:service')
+    implementation project(':code:common:model')
+    implementation project(':code:common:db')
+    implementation project(':code:functions:favicon:api')
+    implementation project(':code:processes:crawling-process')
+
+    implementation libs.bundles.slf4j
+
+    implementation libs.prometheus
+    implementation libs.guava
+    libs.bundles.grpc.get().each {
+        implementation dependencies.create(it) {
+            exclude group: 'com.google.guava'
+        }
+    }
+
+
+    implementation libs.notnull
+    implementation libs.guava
+    implementation dependencies.create(libs.guice.get()) {
+        exclude group: 'com.google.guava'
+    }
+    implementation dependencies.create(libs.spark.get()) {
+        exclude group: 'org.eclipse.jetty'
+    }
+
+    testImplementation libs.bundles.slf4j.test
+    testImplementation libs.bundles.junit
+    testImplementation libs.mockito
+
+
+}

code/functions/favicon/java/nu/marginalia/functions/favicon/FaviconGrpcService.java

@@ -0,0 +1,48 @@
+package nu.marginalia.functions.favicon;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import com.google.protobuf.ByteString;
+import io.grpc.stub.StreamObserver;
+import nu.marginalia.api.favicon.FaviconAPIGrpc;
+import nu.marginalia.api.favicon.RpcFaviconRequest;
+import nu.marginalia.api.favicon.RpcFaviconResponse;
+import nu.marginalia.crawl.DomainStateDb;
+import nu.marginalia.service.server.DiscoverableService;
+
+import java.util.Optional;
+
+@Singleton
+public class FaviconGrpcService extends FaviconAPIGrpc.FaviconAPIImplBase implements DiscoverableService {
+    private final DomainStateDb domainStateDb;
+
+    @Inject
+    public FaviconGrpcService(DomainStateDb domainStateDb) {
+        this.domainStateDb = domainStateDb;
+    }
+
+    public boolean shouldRegisterService() {
+        return domainStateDb.isAvailable();
+    }
+
+    @Override
+    public void getFavicon(RpcFaviconRequest request, StreamObserver<RpcFaviconResponse> responseObserver) {
+        Optional<DomainStateDb.FaviconRecord> icon = domainStateDb.getIcon(request.getDomain());
+
+        RpcFaviconResponse response;
+        if (icon.isEmpty()) {
+            response = RpcFaviconResponse.newBuilder().build();
+        }
+        else {
+            var iconRecord = icon.get();
+            response = RpcFaviconResponse.newBuilder()
+                            .setContentType(iconRecord.contentType())
+                            .setDomain(request.getDomain())
+                            .setData(ByteString.copyFrom(iconRecord.imageData()))
+                            .build();
+        }
+
+        responseObserver.onNext(response);
+        responseObserver.onCompleted();
+    }
+}

code/functions/live-capture/build.gradle

@@ -29,10 +29,12 @@ dependencies {
     implementation libs.jsoup
     implementation project(':third-party:rssreader')
     implementation libs.opencsv
+    implementation libs.slop
     implementation libs.sqlite
     implementation libs.bundles.slf4j
     implementation libs.commons.lang3
     implementation libs.commons.io
+    implementation libs.wiremock
 
     implementation libs.prometheus
     implementation libs.guava

code/functions/live-capture/java/nu/marginalia/livecapture/BrowserlessClient.java

@@ -1,6 +1,7 @@
 package nu.marginalia.livecapture;
 
 import com.google.gson.Gson;
+import nu.marginalia.WmsaHome;
 import nu.marginalia.model.gson.GsonFactory;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -12,10 +13,13 @@ import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
 import java.time.Duration;
 import java.util.Map;
+import java.util.Optional;
 
 /** Client for local browserless.io API */
 public class BrowserlessClient implements AutoCloseable {
+
     private static final Logger logger = LoggerFactory.getLogger(BrowserlessClient.class);
+    private static final String BROWSERLESS_TOKEN = System.getProperty("live-capture.browserless-token", "BROWSERLESS_TOKEN");
 
     private final HttpClient httpClient = HttpClient.newBuilder()
             .version(HttpClient.Version.HTTP_1_1)
@@ -25,18 +29,21 @@ public class BrowserlessClient implements AutoCloseable {
     private final URI browserlessURI;
     private final Gson gson = GsonFactory.get();
 
+    private final String userAgent = WmsaHome.getUserAgent().uaString();
+
     public BrowserlessClient(URI browserlessURI) {
         this.browserlessURI = browserlessURI;
     }
 
-    public String content(String url, GotoOptions gotoOptions) throws IOException, InterruptedException {
+    public Optional<String> content(String url, GotoOptions gotoOptions) throws IOException, InterruptedException {
         Map<String, Object> requestData = Map.of(
                 "url", url,
+                "userAgent", userAgent,
                 "gotoOptions", gotoOptions
         );
 
         var request = HttpRequest.newBuilder()
-                .uri(browserlessURI.resolve("/content"))
+                .uri(browserlessURI.resolve("/content?token="+BROWSERLESS_TOKEN))
                 .method("POST", HttpRequest.BodyPublishers.ofString(
                         gson.toJson(requestData)
                 ))
@@ -47,10 +54,10 @@ public class BrowserlessClient implements AutoCloseable {
 
         if (rsp.statusCode() >= 300) {
             logger.info("Failed to fetch content for {}, status {}", url, rsp.statusCode());
-            return null;
+            return Optional.empty();
         }
 
-        return rsp.body();
+        return Optional.of(rsp.body());
     }
 
     public byte[] screenshot(String url, GotoOptions gotoOptions, ScreenshotOptions screenshotOptions)
@@ -58,12 +65,13 @@ public class BrowserlessClient implements AutoCloseable {
 
         Map<String, Object> requestData = Map.of(
                 "url", url,
+                "userAgent", userAgent,
                 "options", screenshotOptions,
                 "gotoOptions", gotoOptions
         );
 
         var request = HttpRequest.newBuilder()
-                .uri(browserlessURI.resolve("/screenshot"))
+                .uri(browserlessURI.resolve("/screenshot?token="+BROWSERLESS_TOKEN))
                 .method("POST", HttpRequest.BodyPublishers.ofString(
                         gson.toJson(requestData)
                 ))
@@ -82,7 +90,7 @@ public class BrowserlessClient implements AutoCloseable {
     }
 
     @Override
-    public void close() throws Exception {
+    public void close() {
         httpClient.shutdownNow();
     }
 

code/functions/live-capture/java/nu/marginalia/rss/model/FeedItem.java

@@ -1,6 +1,6 @@
 package nu.marginalia.rss.model;
 
-import com.apptasticsoftware.rssreader.Item;
+import nu.marginalia.rss.svc.SimpleFeedParser;
 import org.apache.commons.lang3.StringUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jsoup.Jsoup;
@@ -18,37 +18,33 @@ public record FeedItem(String title,
     public static final int MAX_DESC_LENGTH = 255;
     public static final DateTimeFormatter DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
 
-    public static FeedItem fromItem(Item item, boolean keepFragment) {
-        String title = item.getTitle().orElse("");
+    public static FeedItem fromItem(SimpleFeedParser.ItemData item, boolean keepFragment) {
+        String title = item.title();
         String date = getItemDate(item);
         String description = getItemDescription(item);
         String url;
 
-        if (keepFragment || item.getLink().isEmpty()) {
-            url = item.getLink().orElse("");
+        if (keepFragment) {
+            url = item.url();
         }
         else {
             try {
-                String link = item.getLink().get();
+                String link = item.url();
                 var linkUri = new URI(link);
                 var cleanUri = new URI(linkUri.getScheme(), linkUri.getAuthority(), linkUri.getPath(), linkUri.getQuery(), null);
                 url = cleanUri.toString();
             }
             catch (Exception e) {
                 // fallback to original link if we can't clean it, this is not a very important step
-                url = item.getLink().get();
+                url = item.url();
             }
         }
 
         return new FeedItem(title, date, description, url);
     }
 
-    private static String getItemDescription(Item item) {
-        Optional<String> description = item.getDescription();
-        if (description.isEmpty())
-            return "";
-
-        String rawDescription = description.get();
+    private static String getItemDescription(SimpleFeedParser.ItemData item) {
+        String rawDescription = item.description();
         if (rawDescription.indexOf('<') >= 0) {
             rawDescription = Jsoup.parseBodyFragment(rawDescription).text();
         }
@@ -58,15 +54,18 @@ public record FeedItem(String title,
 
     // e.g. http://fabiensanglard.net/rss.xml does dates like this:  1 Apr 2021 00:00:00 +0000
     private static final DateTimeFormatter extraFormatter = DateTimeFormatter.ofPattern("d MMM yyyy HH:mm:ss Z");
-    private static String getItemDate(Item item) {
+    private static String getItemDate(SimpleFeedParser.ItemData item) {
         Optional<ZonedDateTime> zonedDateTime = Optional.empty();
         try {
             zonedDateTime = item.getPubDateZonedDateTime();
         }
         catch (Exception e) {
-            zonedDateTime = item.getPubDate()
-                    .map(extraFormatter::parse)
-                    .map(ZonedDateTime::from);
+            try {
+                zonedDateTime = Optional.of(ZonedDateTime.from(extraFormatter.parse(item.pubDate())));
+            }
+            catch (Exception e2) {
+                // ignore
+            }
         }
 
         return zonedDateTime.map(date -> date.format(DATE_FORMAT)).orElse("");

code/functions/live-capture/java/nu/marginalia/rss/svc/FeedFetcherService.java

@@ -1,7 +1,5 @@
 package nu.marginalia.rss.svc;
 
-import com.apptasticsoftware.rssreader.Item;
-import com.apptasticsoftware.rssreader.RssReader;
 import com.google.inject.Inject;
 import com.opencsv.CSVReader;
 import nu.marginalia.WmsaHome;
@@ -20,7 +18,6 @@ import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorage;
 import nu.marginalia.storage.model.FileStorageType;
 import nu.marginalia.util.SimpleBlockingThreadPool;
-import org.apache.commons.io.input.BOMInputStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -32,11 +29,11 @@ import java.net.URISyntaxException;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
-import java.nio.charset.StandardCharsets;
 import java.sql.SQLException;
 import java.time.*;
 import java.time.format.DateTimeFormatter;
 import java.util.*;
+import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -48,8 +45,6 @@ public class FeedFetcherService {
     private static final int MAX_FEED_ITEMS = 10;
     private static final Logger logger = LoggerFactory.getLogger(FeedFetcherService.class);
 
-    private final RssReader rssReader = new RssReader();
-
     private final FeedDb feedDb;
     private final FileStorageService fileStorageService;
     private final NodeConfigurationService nodeConfigurationService;
@@ -72,23 +67,12 @@ public class FeedFetcherService {
         this.nodeConfigurationService = nodeConfigurationService;
         this.serviceHeartbeat = serviceHeartbeat;
         this.executorClient = executorClient;
-
-
-        // Add support for some alternate date tags for atom
-        rssReader.addItemExtension("issued", this::setDateFallback);
-        rssReader.addItemExtension("created", this::setDateFallback);
-    }
-
-    private void setDateFallback(Item item, String value) {
-        if (item.getPubDate().isEmpty()) {
-            item.setPubDate(value);
-        }
     }
 
     public enum UpdateMode {
         CLEAN,
         REFRESH
-    };
+    }
 
     public void updateFeeds(UpdateMode updateMode) throws IOException {
         if (updating) // Prevent concurrent updates
@@ -96,6 +80,7 @@ public class FeedFetcherService {
             throw new IllegalStateException("Already updating feeds, refusing to start another update");
         }
 
+
         try (FeedDbWriter writer = feedDb.createWriter();
              HttpClient client = HttpClient.newBuilder()
                 .connectTimeout(Duration.ofSeconds(15))
@@ -103,6 +88,8 @@ public class FeedFetcherService {
                 .followRedirects(HttpClient.Redirect.NORMAL)
                 .version(HttpClient.Version.HTTP_2)
                 .build();
+             ExecutorService fetchExecutor = Executors.newCachedThreadPool();
+             FeedJournal feedJournal = FeedJournal.create();
              var heartbeat = serviceHeartbeat.createServiceAdHocTaskHeartbeat("Update Rss Feeds")
         ) {
             updating = true;
@@ -146,7 +133,7 @@ public class FeedFetcherService {
 
                         FetchResult feedData;
                         try (DomainLocks.DomainLock domainLock = domainLocks.lockDomain(new EdgeDomain(feed.domain()))) {
-                            feedData = fetchFeedData(feed, client, ifModifiedSinceDate, ifNoneMatchTag);
+                            feedData = fetchFeedData(feed, client, fetchExecutor, ifModifiedSinceDate, ifNoneMatchTag);
                         } catch (Exception ex) {
                             feedData = new FetchResult.TransientError();
                         }
@@ -155,6 +142,8 @@ public class FeedFetcherService {
                             case FetchResult.Success(String value, String etag) -> {
                                 writer.saveEtag(feed.domain(), etag);
                                 writer.saveFeed(parseFeed(value, feed));
+
+                                feedJournal.record(feed.feedUrl(), value);
                             }
                             case FetchResult.NotModified() -> {
                                 writer.saveEtag(feed.domain(), ifNoneMatchTag);
@@ -224,6 +213,7 @@ public class FeedFetcherService {
 
     private FetchResult fetchFeedData(FeedDefinition feed,
                                       HttpClient client,
+                                      ExecutorService executorService,
                                       @Nullable String ifModifiedSinceDate,
                                       @Nullable String ifNoneMatchTag)
     {
@@ -250,7 +240,14 @@ public class FeedFetcherService {
             HttpRequest getRequest = requestBuilder.build();
 
             for (int i = 0; i < 3; i++) {
-                HttpResponse<byte[]> rs = client.send(getRequest, HttpResponse.BodyHandlers.ofByteArray());
+
+                /* Note we need to use an executor to time-limit the send() method in HttpClient, as
+                 * its support for timeouts only applies to the time until response starts to be received,
+                 * and does not catch the case when the server starts to send data but then hangs.
+                 */
+                HttpResponse<byte[]> rs = executorService.submit(
+                        () -> client.send(getRequest, HttpResponse.BodyHandlers.ofByteArray()))
+                                .get(15, TimeUnit.SECONDS);
 
                 if (rs.statusCode() == 429) { // Too Many Requests
                     int retryAfter = Integer.parseInt(rs.headers().firstValue("Retry-After").orElse("2"));
@@ -367,12 +364,7 @@ public class FeedFetcherService {
 
     public FeedItems parseFeed(String feedData, FeedDefinition definition) {
         try {
-            feedData = sanitizeEntities(feedData);
-
-            List<Item> rawItems = rssReader.read(
-                    // Massage the data to maximize the possibility of the flaky XML parser consuming it
-                    new BOMInputStream(new ByteArrayInputStream(feedData.trim().getBytes(StandardCharsets.UTF_8)), false)
-            ).toList();
+            List<SimpleFeedParser.ItemData> rawItems = SimpleFeedParser.parse(feedData);
 
             boolean keepUriFragment = rawItems.size() < 2 || areFragmentsDisparate(rawItems);
 
@@ -395,33 +387,6 @@ public class FeedFetcherService {
         }
     }
 
-    private static final Map<String, String> HTML_ENTITIES = Map.of(
-            "&raquo;", "»",
-            "&laquo;", "«",
-            "&mdash;", "--",
-            "&ndash;", "-",
-            "&rsquo;", "'",
-            "&lsquo;", "'",
-            "&quot;", "\"",
-            "&nbsp;", ""
-    );
-
-    /** The XML parser will blow up if you insert HTML entities in the feed XML,
-     * which is unfortunately relatively common.  Replace them as far as is possible
-     * with their corresponding characters
-     */
-    static String sanitizeEntities(String feedData) {
-        String result = feedData;
-        for (Map.Entry<String, String> entry : HTML_ENTITIES.entrySet()) {
-            result = result.replace(entry.getKey(), entry.getValue());
-        }
-
-        // Handle lone ampersands not part of a recognized XML entity
-        result = result.replaceAll("&(?!(amp|lt|gt|apos|quot);)", "&amp;");
-
-        return result;
-    }
-
     /** Decide whether to keep URI fragments in the feed items.
      * <p></p>
      * We keep fragments if there are multiple different fragments in the items.
@@ -429,16 +394,16 @@ public class FeedFetcherService {
      * @param items The items to check
      * @return True if we should keep the fragments, false otherwise
      */
-    private boolean areFragmentsDisparate(List<Item> items) {
+    private boolean areFragmentsDisparate(List<SimpleFeedParser.ItemData> items) {
         Set<String> seenFragments = new HashSet<>();
 
         try {
             for (var item : items) {
-                if (item.getLink().isEmpty()) {
+                if (item.url().isBlank()) {
                     continue;
                 }
 
-                var link = item.getLink().get();
+                var link = item.url();
                 if (!link.contains("#")) {
                     continue;
                 }

code/functions/live-capture/java/nu/marginalia/rss/svc/FeedJournal.java

@@ -0,0 +1,76 @@
+package nu.marginalia.rss.svc;
+
+import nu.marginalia.WmsaHome;
+import nu.marginalia.slop.SlopTable;
+import nu.marginalia.slop.column.string.StringColumn;
+import nu.marginalia.slop.desc.StorageType;
+import org.apache.commons.io.FileUtils;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.function.BiConsumer;
+
+/** Utility for recording fetched feeds to a journal, useful in debugging feed parser issues.
+ */
+public interface FeedJournal extends AutoCloseable {
+    StringColumn urlColumn = new StringColumn("url");
+    StringColumn contentsColumn = new StringColumn("contents", StandardCharsets.UTF_8, StorageType.ZSTD);
+
+    void record(String url, String contents) throws IOException;
+    void close() throws IOException;
+
+
+    static FeedJournal create() throws IOException {
+        if (Boolean.getBoolean("feedFetcher.persistJournal")) {
+            Path journalPath = WmsaHome.getDataPath().resolve("feed-journal");
+            if (Files.isDirectory(journalPath)) {
+                FileUtils.deleteDirectory(journalPath.toFile());
+            }
+            Files.createDirectories(journalPath);
+            return new RecordingFeedJournal(journalPath);
+        }
+        else {
+            return new NoOpFeedJournal();
+        }
+    }
+
+    class NoOpFeedJournal implements FeedJournal {
+        @Override
+        public void record(String url, String contents) {}
+
+        @Override
+        public void close() {}
+    }
+
+    class RecordingFeedJournal extends SlopTable implements FeedJournal {
+
+        private final StringColumn.Writer urlWriter;
+        private final StringColumn.Writer contentsWriter;
+
+        public RecordingFeedJournal(Path path) throws IOException {
+            super(path, SlopTable.getNumPages(path, FeedJournal.urlColumn));
+
+            urlWriter = urlColumn.create(this);
+            contentsWriter = contentsColumn.create(this);
+        }
+
+        public synchronized void record(String url, String contents) throws IOException {
+            urlWriter.put(url);
+            contentsWriter.put(contents);
+        }
+    }
+
+    static void replay(Path journalPath, BiConsumer<String, String> urlAndContent) throws IOException {
+        try (SlopTable table = new SlopTable(journalPath)) {
+            final StringColumn.Reader urlReader = urlColumn.open(table);
+            final StringColumn.Reader contentsReader = contentsColumn.open(table);
+
+            while (urlReader.hasRemaining()) {
+                urlAndContent.accept(urlReader.get(), contentsReader.get());
+            }
+        }
+
+    }
+}

code/functions/live-capture/java/nu/marginalia/rss/svc/SimpleFeedParser.java

@@ -0,0 +1,94 @@
+package nu.marginalia.rss.svc;
+
+import com.apptasticsoftware.rssreader.DateTimeParser;
+import com.apptasticsoftware.rssreader.util.Default;
+import org.jsoup.Jsoup;
+import org.jsoup.parser.Parser;
+
+import java.time.ZonedDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+public class SimpleFeedParser {
+
+    private static final DateTimeParser dateTimeParser = Default.getDateTimeParser();
+
+    public record ItemData (
+            String title,
+            String description,
+            String url,
+            String pubDate
+    ) {
+        public boolean isWellFormed() {
+            return title != null && !title.isBlank() &&
+                    description != null && !description.isBlank() &&
+                    url != null && !url.isBlank() &&
+                    pubDate != null && !pubDate.isBlank();
+        }
+
+        public Optional<ZonedDateTime> getPubDateZonedDateTime() {
+            try {
+                return Optional.ofNullable(dateTimeParser.parse(pubDate()));
+            }
+            catch (Exception e) {
+                return Optional.empty();
+            }
+        }
+
+    }
+
+    public static List<ItemData> parse(String content) {
+        var doc = Jsoup.parse(content, Parser.xmlParser());
+        List<ItemData> ret = new ArrayList<>();
+
+        doc.select("item, entry").forEach(element -> {
+            String link = "";
+            String title = "";
+            String description = "";
+            String pubDate = "";
+
+            for (String attr : List.of("title", "dc:title")) {
+                if (!title.isBlank())
+                    break;
+                var tag = element.getElementsByTag(attr).first();
+                if (tag != null) {
+                    title = tag.text();
+                }
+            }
+
+            for (String attr : List.of("title", "summary", "content", "description", "dc:description")) {
+                if (!description.isBlank())
+                    break;
+                var tag = element.getElementsByTag(attr).first();
+                if (tag != null) {
+                    description = tag.text();
+                }
+            }
+
+            for (String attr : List.of("pubDate", "published", "updated", "issued", "created", "dc:date")) {
+                if (!pubDate.isBlank())
+                    break;
+                var tag = element.getElementsByTag(attr).first();
+                if (tag != null) {
+                    pubDate = tag.text();
+                }
+            }
+
+            for (String attr : List.of("link", "url")) {
+                if (!link.isBlank())
+                    break;
+                var tag = element.getElementsByTag(attr).first();
+                if (tag != null) {
+                    link = tag.text();
+                }
+            }
+
+            ret.add(new ItemData(title, description, link, pubDate));
+        });
+
+
+        return ret;
+    }
+
+}

code/functions/live-capture/test/nu/marginalia/livecapture/BrowserlessClientTest.java

@@ -1,36 +1,97 @@
 package nu.marginalia.livecapture;
 
+import com.github.tomakehurst.wiremock.WireMockServer;
+import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
+import nu.marginalia.WmsaHome;
+import nu.marginalia.service.module.ServiceConfigurationModule;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 import org.testcontainers.containers.GenericContainer;
 import org.testcontainers.junit.jupiter.Testcontainers;
 import org.testcontainers.utility.DockerImageName;
 
+import java.io.IOException;
 import java.net.URI;
+import java.util.Map;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.*;
+
 
 @Testcontainers
+@Tag("slow")
 public class BrowserlessClientTest {
-    static GenericContainer<?> container = new GenericContainer<>(DockerImageName.parse("browserless/chrome")).withExposedPorts(3000);
+    static GenericContainer<?> container = new GenericContainer<>(DockerImageName.parse("browserless/chrome"))
+            .withEnv(Map.of("TOKEN", "BROWSERLESS_TOKEN"))
+            .withNetworkMode("bridge")
+            .withExposedPorts(3000);
+
+    static WireMockServer wireMockServer =
+            new WireMockServer(WireMockConfiguration.wireMockConfig()
+                    .port(18089));
+
+    static String localIp;
+
+    static URI browserlessURI;
 
     @BeforeAll
-    public static void setup() {
+    public static void setup() throws IOException {
         container.start();
+
+        browserlessURI = URI.create(String.format("http://%s:%d/",
+                container.getHost(),
+                container.getMappedPort(3000))
+        );
+
+        wireMockServer.start();
+        wireMockServer.stubFor(get("/").willReturn(aResponse().withStatus(200).withBody("Ok")));
+
+        localIp = ServiceConfigurationModule.getLocalNetworkIP();
+
+    }
+
+    @Tag("flaky")
+    @Test
+    public void testInspectContentUA__Flaky() throws Exception {
+        try (var client = new BrowserlessClient(browserlessURI)) {
+            client.content("http://" + localIp + ":18089/",
+                    BrowserlessClient.GotoOptions.defaultValues()
+            );
+        }
+
+        wireMockServer.verify(getRequestedFor(urlEqualTo("/")).withHeader("User-Agent", equalTo(WmsaHome.getUserAgent().uaString())));
+    }
+
+    @Tag("flaky")
+    @Test
+    public void testInspectScreenshotUA__Flaky() throws Exception {
+        try (var client = new BrowserlessClient(browserlessURI)) {
+            client.screenshot("http://" + localIp + ":18089/",
+                    BrowserlessClient.GotoOptions.defaultValues(),
+                    BrowserlessClient.ScreenshotOptions.defaultValues()
+            );
+        }
+
+        wireMockServer.verify(getRequestedFor(urlEqualTo("/")).withHeader("User-Agent", equalTo(WmsaHome.getUserAgent().uaString())));
     }
 
     @Test
     public void testContent() throws Exception {
-        try (var client = new BrowserlessClient(URI.create("http://" + container.getHost() + ":" + container.getMappedPort(3000)))) {
-            var content = client.content("https://www.marginalia.nu/", BrowserlessClient.GotoOptions.defaultValues());
-            Assertions.assertNotNull(content, "Content should not be null");
+        try (var client = new BrowserlessClient(browserlessURI)) {
+            var content = client.content("https://www.marginalia.nu/", BrowserlessClient.GotoOptions.defaultValues()).orElseThrow();
+
             Assertions.assertFalse(content.isBlank(), "Content should not be empty");
         }
     }
 
     @Test
     public void testScreenshot() throws Exception {
-        try (var client = new BrowserlessClient(URI.create("http://" + container.getHost() + ":" + container.getMappedPort(3000)))) {
-            var screenshot = client.screenshot("https://www.marginalia.nu/", BrowserlessClient.GotoOptions.defaultValues(), BrowserlessClient.ScreenshotOptions.defaultValues());
+        try (var client = new BrowserlessClient(browserlessURI)) {
+            var screenshot = client.screenshot("https://www.marginalia.nu/",
+                    BrowserlessClient.GotoOptions.defaultValues(),
+                    BrowserlessClient.ScreenshotOptions.defaultValues());
+
             Assertions.assertNotNull(screenshot, "Screenshot should not be null");
         }
     }

code/functions/live-capture/test/nu/marginalia/rss/svc/TestXmlSanitization.java

@@ -1,50 +0,0 @@
-package nu.marginalia.rss.svc;
-
-import com.apptasticsoftware.rssreader.Item;
-import com.apptasticsoftware.rssreader.RssReader;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.Test;
-
-import java.util.List;
-import java.util.Optional;
-
-public class TestXmlSanitization {
-
-    @Test
-    public void testPreservedEntities() {
-        Assertions.assertEquals("&", FeedFetcherService.sanitizeEntities("&"));
-        Assertions.assertEquals("<", FeedFetcherService.sanitizeEntities("<"));
-        Assertions.assertEquals(">", FeedFetcherService.sanitizeEntities(">"));
-        Assertions.assertEquals("'", FeedFetcherService.sanitizeEntities("'"));
-    }
-
-    @Test
-    public void testNlnetTitleTag() {
-        // The NLnet atom feed puts HTML tags in the entry/title tags, which breaks the vanilla RssReader code
-
-        // Verify we're able to consume and strip out the HTML tags
-        RssReader r = new RssReader();
-
-        List<Item> items = r.read(ClassLoader.getSystemResourceAsStream("nlnet.atom")).toList();
-
-        Assertions.assertEquals(1, items.size());
-        for (var item : items) {
-            Assertions.assertEquals(Optional.of("50 Free and Open Source Projects Selected for NGI Zero grants"), item.getTitle());
-        }
-    }
-
-    @Test
-    public void testStrayAmpersand() {
-        Assertions.assertEquals("Bed &amp; Breakfast", FeedFetcherService.sanitizeEntities("Bed & Breakfast"));
-    }
-
-    @Test
-    public void testTranslatedHtmlEntity() {
-        Assertions.assertEquals("Foo -- Bar", FeedFetcherService.sanitizeEntities("Foo &mdash; Bar"));
-    }
-
-    @Test
-    public void testTranslatedHtmlEntityQuot() {
-        Assertions.assertEquals("\"Bob\"", FeedFetcherService.sanitizeEntities("&quot;Bob&quot;"));
-    }
-}

code/functions/search-query/api/java/nu/marginalia/api/searchquery/IndexProtobufCodec.java

@@ -2,9 +2,6 @@ package nu.marginalia.api.searchquery;
 
 import nu.marginalia.api.searchquery.model.query.SearchPhraseConstraint;
 import nu.marginalia.api.searchquery.model.query.SearchQuery;
-import nu.marginalia.api.searchquery.model.results.Bm25Parameters;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
-import nu.marginalia.index.query.limit.QueryLimits;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 import nu.marginalia.index.query.limit.SpecificationLimitType;
 
@@ -27,37 +24,19 @@ public class IndexProtobufCodec {
                 .build();
     }
 
-    public static  QueryLimits convertQueryLimits(RpcQueryLimits queryLimits) {
-        return new QueryLimits(
-                queryLimits.getResultsByDomain(),
-                queryLimits.getResultsTotal(),
-                queryLimits.getTimeoutMs(),
-                queryLimits.getFetchSize()
-        );
-    }
-
-    public static RpcQueryLimits convertQueryLimits(QueryLimits queryLimits) {
-        return RpcQueryLimits.newBuilder()
-                .setResultsByDomain(queryLimits.resultsByDomain())
-                .setResultsTotal(queryLimits.resultsTotal())
-                .setTimeoutMs(queryLimits.timeoutMs())
-                .setFetchSize(queryLimits.fetchSize())
-                .build();
-    }
-
     public static SearchQuery convertRpcQuery(RpcQuery query) {
-        List<SearchPhraseConstraint> phraeConstraints = new ArrayList<>();
+        List<SearchPhraseConstraint> phraseConstraints = new ArrayList<>();
 
         for (int j = 0; j < query.getPhrasesCount(); j++) {
             var coh = query.getPhrases(j);
             if (coh.getType() == RpcPhrases.TYPE.OPTIONAL) {
-                phraeConstraints.add(new SearchPhraseConstraint.Optional(List.copyOf(coh.getTermsList())));
+                phraseConstraints.add(new SearchPhraseConstraint.Optional(List.copyOf(coh.getTermsList())));
             }
             else if (coh.getType() == RpcPhrases.TYPE.MANDATORY) {
-                phraeConstraints.add(new SearchPhraseConstraint.Mandatory(List.copyOf(coh.getTermsList())));
+                phraseConstraints.add(new SearchPhraseConstraint.Mandatory(List.copyOf(coh.getTermsList())));
             }
             else if (coh.getType() == RpcPhrases.TYPE.FULL) {
-                phraeConstraints.add(new SearchPhraseConstraint.Full(List.copyOf(coh.getTermsList())));
+                phraseConstraints.add(new SearchPhraseConstraint.Full(List.copyOf(coh.getTermsList())));
             }
             else {
                 throw new IllegalArgumentException("Unknown phrase constraint type: " + coh.getType());
@@ -70,7 +49,7 @@ public class IndexProtobufCodec {
                 query.getExcludeList(),
                 query.getAdviceList(),
                 query.getPriorityList(),
-                phraeConstraints
+                phraseConstraints
         );
     }
 
@@ -103,62 +82,4 @@ public class IndexProtobufCodec {
         return subqueryBuilder.build();
     }
 
-    public static ResultRankingParameters convertRankingParameterss(RpcResultRankingParameters params) {
-        if (params == null)
-            return ResultRankingParameters.sensibleDefaults();
-
-        return new ResultRankingParameters(
-                new Bm25Parameters(params.getBm25K(), params.getBm25B()),
-                params.getShortDocumentThreshold(),
-                params.getShortDocumentPenalty(),
-                params.getDomainRankBonus(),
-                params.getQualityPenalty(),
-                params.getShortSentenceThreshold(),
-                params.getShortSentencePenalty(),
-                params.getBm25Weight(),
-                params.getTcfFirstPositionWeight(),
-                params.getTcfVerbatimWeight(),
-                params.getTcfProximityWeight(),
-                ResultRankingParameters.TemporalBias.valueOf(params.getTemporalBias().getBias().name()),
-                params.getTemporalBiasWeight(),
-                params.getDisablePenalties(),
-                params.getExportDebugData()
-        );
-    }
-
-    public static RpcResultRankingParameters convertRankingParameterss(ResultRankingParameters rankingParams,
-                                                                       RpcTemporalBias temporalBias)
-    {
-        if (rankingParams == null) {
-            rankingParams = ResultRankingParameters.sensibleDefaults();
-        }
-
-        var builder = RpcResultRankingParameters.newBuilder()
-                        .setBm25B(rankingParams.bm25Params.b())
-                        .setBm25K(rankingParams.bm25Params.k())
-                        .setShortDocumentThreshold(rankingParams.shortDocumentThreshold)
-                        .setShortDocumentPenalty(rankingParams.shortDocumentPenalty)
-                        .setDomainRankBonus(rankingParams.domainRankBonus)
-                        .setQualityPenalty(rankingParams.qualityPenalty)
-                        .setShortSentenceThreshold(rankingParams.shortSentenceThreshold)
-                        .setShortSentencePenalty(rankingParams.shortSentencePenalty)
-                        .setBm25Weight(rankingParams.bm25Weight)
-                        .setTcfFirstPositionWeight(rankingParams.tcfFirstPosition)
-                        .setTcfProximityWeight(rankingParams.tcfProximity)
-                        .setTcfVerbatimWeight(rankingParams.tcfVerbatim)
-                        .setTemporalBiasWeight(rankingParams.temporalBiasWeight)
-                        .setDisablePenalties(rankingParams.disablePenalties)
-                        .setExportDebugData(rankingParams.exportDebugData);
-
-        if (temporalBias != null && temporalBias.getBias() != RpcTemporalBias.Bias.NONE) {
-            builder.setTemporalBias(temporalBias);
-        }
-        else {
-            builder.setTemporalBias(RpcTemporalBias.newBuilder()
-                    .setBias(RpcTemporalBias.Bias.valueOf(rankingParams.temporalBias.name())));
-        }
-
-        return builder.build();
-    }
-
 }

code/functions/search-query/api/java/nu/marginalia/api/searchquery/QueryProtobufCodec.java

@@ -5,7 +5,7 @@ import nu.marginalia.api.searchquery.model.query.QueryParams;
 import nu.marginalia.api.searchquery.model.query.QueryResponse;
 import nu.marginalia.api.searchquery.model.query.SearchSpecification;
 import nu.marginalia.api.searchquery.model.results.DecoratedSearchResultItem;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
+import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
 import nu.marginalia.api.searchquery.model.results.SearchResultItem;
 import nu.marginalia.api.searchquery.model.results.SearchResultKeywordScore;
 import nu.marginalia.api.searchquery.model.results.debug.DebugFactor;
@@ -37,7 +37,7 @@ public class QueryProtobufCodec {
         builder.setSize(IndexProtobufCodec.convertSpecLimit(query.specs.size));
         builder.setRank(IndexProtobufCodec.convertSpecLimit(query.specs.rank));
 
-        builder.setQueryLimits(IndexProtobufCodec.convertQueryLimits(query.specs.queryLimits));
+        builder.setQueryLimits(query.specs.queryLimits);
 
         // Query strategy may be overridden by the query, but if not, use the one from the request
         if (query.specs.queryStrategy != null && query.specs.queryStrategy != QueryStrategy.AUTO)
@@ -45,9 +45,27 @@ public class QueryProtobufCodec {
         else
             builder.setQueryStrategy(request.getQueryStrategy());
 
+        if (request.getTemporalBias().getBias() != RpcTemporalBias.Bias.NONE) {
             if (query.specs.rankingParams != null) {
-            builder.setParameters(IndexProtobufCodec.convertRankingParameterss(query.specs.rankingParams, request.getTemporalBias()));
+                builder.setParameters(
+                        RpcResultRankingParameters.newBuilder(query.specs.rankingParams)
+                                .setTemporalBias(request.getTemporalBias())
+                                .build()
+                );
+            } else {
+                builder.setParameters(
+                        RpcResultRankingParameters.newBuilder(PrototypeRankingParameters.sensibleDefaults())
+                                .setTemporalBias(request.getTemporalBias())
+                                .build()
+                );
             }
+        } else if (query.specs.rankingParams != null) {
+            builder.setParameters(query.specs.rankingParams);
+        }
+        // else {
+        // if we have no ranking params, we don't need to set them, the client check and use the default values
+        // so we don't need to send this huge object over the wire
+        // }
 
         return builder.build();
     }
@@ -65,18 +83,13 @@ public class QueryProtobufCodec {
         builder.setSize(IndexProtobufCodec.convertSpecLimit(query.specs.size));
         builder.setRank(IndexProtobufCodec.convertSpecLimit(query.specs.rank));
 
-        builder.setQueryLimits(IndexProtobufCodec.convertQueryLimits(query.specs.queryLimits));
+        builder.setQueryLimits(query.specs.queryLimits);
 
         // Query strategy may be overridden by the query, but if not, use the one from the request
         builder.setQueryStrategy(query.specs.queryStrategy.name());
 
         if (query.specs.rankingParams != null) {
-            builder.setParameters(IndexProtobufCodec.convertRankingParameterss(
-                    query.specs.rankingParams,
-                    RpcTemporalBias.newBuilder().setBias(
-                                    RpcTemporalBias.Bias.NONE)
-                            .build())
-            );
+            builder.setParameters(query.specs.rankingParams);
         }
 
         return builder.build();
@@ -95,10 +108,10 @@ public class QueryProtobufCodec {
                 IndexProtobufCodec.convertSpecLimit(request.getSize()),
                 IndexProtobufCodec.convertSpecLimit(request.getRank()),
                 request.getDomainIdsList(),
-                IndexProtobufCodec.convertQueryLimits(request.getQueryLimits()),
+                request.getQueryLimits(),
                 request.getSearchSetIdentifier(),
                 QueryStrategy.valueOf(request.getQueryStrategy()),
-                ResultRankingParameters.TemporalBias.valueOf(request.getTemporalBias().getBias().name()),
+                RpcTemporalBias.Bias.valueOf(request.getTemporalBias().getBias().name()),
                 request.getPagination().getPage()
         );
     }
@@ -294,9 +307,9 @@ public class QueryProtobufCodec {
                 IndexProtobufCodec.convertSpecLimit(specs.getYear()),
                 IndexProtobufCodec.convertSpecLimit(specs.getSize()),
                 IndexProtobufCodec.convertSpecLimit(specs.getRank()),
-                IndexProtobufCodec.convertQueryLimits(specs.getQueryLimits()),
+                specs.getQueryLimits(),
                 QueryStrategy.valueOf(specs.getQueryStrategy()),
-                IndexProtobufCodec.convertRankingParameterss(specs.getParameters())
+                specs.hasParameters() ? specs.getParameters() : null
         );
     }
 
@@ -307,7 +320,7 @@ public class QueryProtobufCodec {
                 .addAllTacitExcludes(params.tacitExcludes())
                 .addAllTacitPriority(params.tacitPriority())
                 .setHumanQuery(params.humanQuery())
-                .setQueryLimits(IndexProtobufCodec.convertQueryLimits(params.limits()))
+                .setQueryLimits(params.limits())
                 .setQuality(IndexProtobufCodec.convertSpecLimit(params.quality()))
                 .setYear(IndexProtobufCodec.convertSpecLimit(params.year()))
                 .setSize(IndexProtobufCodec.convertSpecLimit(params.size()))
@@ -319,7 +332,7 @@ public class QueryProtobufCodec {
                         .build())
                 .setPagination(RpcQsQueryPagination.newBuilder()
                         .setPage(params.page())
-                        .setPageSize(Math.min(100, params.limits().resultsTotal()))
+                        .setPageSize(Math.min(100, params.limits().getResultsTotal()))
                         .build());
 
         if (params.nearDomain() != null)

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/query/QueryParams.java

@@ -1,7 +1,7 @@
 package nu.marginalia.api.searchquery.model.query;
 
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
-import nu.marginalia.index.query.limit.QueryLimits;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
+import nu.marginalia.api.searchquery.RpcTemporalBias;
 import nu.marginalia.index.query.limit.QueryStrategy;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 
@@ -21,14 +21,14 @@ public record QueryParams(
         SpecificationLimit size,
         SpecificationLimit rank,
         List<Integer> domainIds,
-        QueryLimits limits,
+        RpcQueryLimits limits,
         String identifier,
         QueryStrategy queryStrategy,
-        ResultRankingParameters.TemporalBias temporalBias,
+        RpcTemporalBias.Bias temporalBias,
         int page
 )
 {
-    public QueryParams(String query, QueryLimits limits, String identifier) {
+    public QueryParams(String query, RpcQueryLimits limits, String identifier) {
         this(query, null,
                 List.of(),
                 List.of(),
@@ -42,7 +42,7 @@ public record QueryParams(
                 limits,
                 identifier,
                 QueryStrategy.AUTO,
-                ResultRankingParameters.TemporalBias.NONE,
+                RpcTemporalBias.Bias.NONE,
                 1 // page
                 );
     }

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/query/SearchSpecification.java

@@ -1,10 +1,11 @@
 package nu.marginalia.api.searchquery.model.query;
 
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
-import nu.marginalia.index.query.limit.QueryLimits;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
 import nu.marginalia.index.query.limit.QueryStrategy;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 
+import javax.annotation.Nullable;
 import java.util.List;
 
 public class SearchSpecification {
@@ -24,11 +25,12 @@ public class SearchSpecification {
     public SpecificationLimit size;
     public SpecificationLimit rank;
 
-    public final QueryLimits queryLimits;
+    public final RpcQueryLimits queryLimits;
 
     public final QueryStrategy queryStrategy;
 
-    public final ResultRankingParameters rankingParams;
+    @Nullable
+    public final RpcResultRankingParameters rankingParams;
 
     public SearchSpecification(SearchQuery query,
                                List<Integer> domains,
@@ -38,9 +40,9 @@ public class SearchSpecification {
                                SpecificationLimit year,
                                SpecificationLimit size,
                                SpecificationLimit rank,
-                               QueryLimits queryLimits,
+                               RpcQueryLimits queryLimits,
                                QueryStrategy queryStrategy,
-                               ResultRankingParameters rankingParams)
+                               @Nullable RpcResultRankingParameters rankingParams)
     {
         this.query = query;
         this.domains = domains;
@@ -91,7 +93,7 @@ public class SearchSpecification {
         return this.rank;
     }
 
-    public QueryLimits getQueryLimits() {
+    public RpcQueryLimits getQueryLimits() {
         return this.queryLimits;
     }
 
@@ -99,7 +101,7 @@ public class SearchSpecification {
         return this.queryStrategy;
     }
 
-    public ResultRankingParameters getRankingParams() {
+    public RpcResultRankingParameters getRankingParams() {
         return this.rankingParams;
     }
 
@@ -120,9 +122,9 @@ public class SearchSpecification {
         private boolean size$set;
         private SpecificationLimit rank$value;
         private boolean rank$set;
-        private QueryLimits queryLimits;
+        private RpcQueryLimits queryLimits;
         private QueryStrategy queryStrategy;
-        private ResultRankingParameters rankingParams;
+        private RpcResultRankingParameters rankingParams;
 
         SearchSpecificationBuilder() {
         }
@@ -171,7 +173,7 @@ public class SearchSpecification {
             return this;
         }
 
-        public SearchSpecificationBuilder queryLimits(QueryLimits queryLimits) {
+        public SearchSpecificationBuilder queryLimits(RpcQueryLimits queryLimits) {
             this.queryLimits = queryLimits;
             return this;
         }
@@ -181,7 +183,7 @@ public class SearchSpecification {
             return this;
         }
 
-        public SearchSpecificationBuilder rankingParams(ResultRankingParameters rankingParams) {
+        public SearchSpecificationBuilder rankingParams(RpcResultRankingParameters rankingParams) {
             this.rankingParams = rankingParams;
             return this;
         }

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/results/PrototypeRankingParameters.java

@@ -0,0 +1,33 @@
+package nu.marginalia.api.searchquery.model.results;
+
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
+import nu.marginalia.api.searchquery.RpcTemporalBias;
+
+public class PrototypeRankingParameters {
+
+    /** These are the default ranking parameters that are used when no parameters are specified. */
+
+    private static final RpcResultRankingParameters _sensibleDefaults = RpcResultRankingParameters.newBuilder()
+                .setBm25B(0.5)
+                .setBm25K(1.2)
+                .setShortDocumentThreshold(2000)
+                .setShortDocumentPenalty(2.)
+                .setDomainRankBonus(1 / 100.)
+                .setQualityPenalty(1 / 15.)
+                .setShortSentenceThreshold(2)
+                .setShortSentencePenalty(5)
+                .setBm25Weight(1.)
+                .setTcfVerbatimWeight(1.)
+                .setTcfProximityWeight(1.)
+                .setTcfFirstPositionWeight(5)
+                .setTemporalBias(RpcTemporalBias.newBuilder().setBias(RpcTemporalBias.Bias.NONE))
+                .setTemporalBiasWeight(5.0)
+                .setExportDebugData(false)
+                .setDisablePenalties(false)
+                .build();
+
+    public static RpcResultRankingParameters sensibleDefaults() {
+        return _sensibleDefaults;
+    }
+
+}

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/results/ResultRankingContext.java

@@ -1,12 +1,13 @@
 package nu.marginalia.api.searchquery.model.results;
 
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
 import nu.marginalia.api.searchquery.model.compiled.CqDataInt;
 
 import java.util.BitSet;
 
 public class ResultRankingContext {
     private final int docCount;
-    public final ResultRankingParameters params;
+    public final RpcResultRankingParameters params;
 
 
     public final BitSet regularMask;
@@ -21,7 +22,7 @@ public class ResultRankingContext {
     public final CqDataInt priorityCounts;
 
     public ResultRankingContext(int docCount,
-                                ResultRankingParameters params,
+                                RpcResultRankingParameters params,
                                 BitSet ngramsMask,
                                 BitSet regularMask,
                                 CqDataInt fullCounts,

code/functions/search-query/api/java/nu/marginalia/api/searchquery/model/results/ResultRankingParameters.java

@@ -1,291 +0,0 @@
-package nu.marginalia.api.searchquery.model.results;
-
-import java.util.Objects;
-
-public class ResultRankingParameters {
-
-    /**
-     * Tuning for BM25 when applied to full document matches
-     */
-    public final Bm25Parameters bm25Params;
-
-    /**
-     * Documents below this length are penalized
-     */
-    public int shortDocumentThreshold;
-
-    public double shortDocumentPenalty;
-
-
-    /**
-     * Scaling factor associated with domain rank (unscaled rank value is 0-255; high is good)
-     */
-    public double domainRankBonus;
-
-    /**
-     * Scaling factor associated with document quality (unscaled rank value is 0-15; high is bad)
-     */
-    public double qualityPenalty;
-
-    /**
-     * Average sentence length values below this threshold are penalized, range [0-4), 2 or 3 is probably what you want
-     */
-    public int shortSentenceThreshold;
-
-    /**
-     * Magnitude of penalty for documents with low average sentence length
-     */
-    public double shortSentencePenalty;
-
-    public double bm25Weight;
-    public double tcfFirstPosition;
-    public double tcfVerbatim;
-    public double tcfProximity;
-
-
-    public TemporalBias temporalBias;
-    public double temporalBiasWeight;
-
-    public boolean disablePenalties;
-    public boolean exportDebugData;
-
-    public ResultRankingParameters(Bm25Parameters bm25Params, int shortDocumentThreshold, double shortDocumentPenalty, double domainRankBonus, double qualityPenalty, int shortSentenceThreshold, double shortSentencePenalty, double bm25Weight, double tcfFirstPosition, double tcfVerbatim, double tcfProximity, TemporalBias temporalBias, double temporalBiasWeight, boolean disablePenalties, boolean exportDebugData) {
-        this.bm25Params = bm25Params;
-        this.shortDocumentThreshold = shortDocumentThreshold;
-        this.shortDocumentPenalty = shortDocumentPenalty;
-        this.domainRankBonus = domainRankBonus;
-        this.qualityPenalty = qualityPenalty;
-        this.shortSentenceThreshold = shortSentenceThreshold;
-        this.shortSentencePenalty = shortSentencePenalty;
-        this.bm25Weight = bm25Weight;
-        this.tcfFirstPosition = tcfFirstPosition;
-        this.tcfVerbatim = tcfVerbatim;
-        this.tcfProximity = tcfProximity;
-        this.temporalBias = temporalBias;
-        this.temporalBiasWeight = temporalBiasWeight;
-        this.disablePenalties = disablePenalties;
-        this.exportDebugData = exportDebugData;
-    }
-
-    private static final ResultRankingParameters _sensibleDefaults = builder()
-                .bm25Params(new Bm25Parameters(1.2, 0.5))
-                .shortDocumentThreshold(2000)
-                .shortDocumentPenalty(2.)
-                .domainRankBonus(1 / 100.)
-                .qualityPenalty(1 / 15.)
-                .shortSentenceThreshold(2)
-                .shortSentencePenalty(5)
-                .bm25Weight(1.)
-                .tcfVerbatim(1.)
-                .tcfProximity(1.)
-                .tcfFirstPosition(5)
-                .temporalBias(TemporalBias.NONE)
-                .temporalBiasWeight(5.0)
-                .exportDebugData(false)
-                .disablePenalties(false)
-                .build();
-
-    public static ResultRankingParameters sensibleDefaults() {
-        return _sensibleDefaults;
-    }
-
-    public static ResultRankingParametersBuilder builder() {
-        return new ResultRankingParametersBuilder();
-    }
-
-    public Bm25Parameters getBm25Params() {
-        return this.bm25Params;
-    }
-
-    public int getShortDocumentThreshold() {
-        return this.shortDocumentThreshold;
-    }
-
-    public double getShortDocumentPenalty() {
-        return this.shortDocumentPenalty;
-    }
-
-    public double getDomainRankBonus() {
-        return this.domainRankBonus;
-    }
-
-    public double getQualityPenalty() {
-        return this.qualityPenalty;
-    }
-
-    public int getShortSentenceThreshold() {
-        return this.shortSentenceThreshold;
-    }
-
-    public double getShortSentencePenalty() {
-        return this.shortSentencePenalty;
-    }
-
-    public double getBm25Weight() {
-        return this.bm25Weight;
-    }
-
-    public double getTcfFirstPosition() {
-        return this.tcfFirstPosition;
-    }
-
-    public double getTcfVerbatim() {
-        return this.tcfVerbatim;
-    }
-
-    public double getTcfProximity() {
-        return this.tcfProximity;
-    }
-
-    public TemporalBias getTemporalBias() {
-        return this.temporalBias;
-    }
-
-    public double getTemporalBiasWeight() {
-        return this.temporalBiasWeight;
-    }
-
-    public boolean isDisablePenalties() { return this.disablePenalties; }
-
-    public boolean isExportDebugData() {
-        return this.exportDebugData;
-    }
-
-    @Override
-    public final boolean equals(Object o) {
-        if (this == o) return true;
-        if (!(o instanceof ResultRankingParameters that)) return false;
-
-        return shortDocumentThreshold == that.shortDocumentThreshold && Double.compare(shortDocumentPenalty, that.shortDocumentPenalty) == 0 && Double.compare(domainRankBonus, that.domainRankBonus) == 0 && Double.compare(qualityPenalty, that.qualityPenalty) == 0 && shortSentenceThreshold == that.shortSentenceThreshold && Double.compare(shortSentencePenalty, that.shortSentencePenalty) == 0 && Double.compare(bm25Weight, that.bm25Weight) == 0 && Double.compare(tcfFirstPosition, that.tcfFirstPosition) == 0 && Double.compare(tcfVerbatim, that.tcfVerbatim) == 0 && Double.compare(tcfProximity, that.tcfProximity) == 0 && Double.compare(temporalBiasWeight, that.temporalBiasWeight) == 0 && exportDebugData == that.exportDebugData && Objects.equals(bm25Params, that.bm25Params) && temporalBias == that.temporalBias;
-    }
-
-    @Override
-    public int hashCode() {
-        int result = Objects.hashCode(bm25Params);
-        result = 31 * result + shortDocumentThreshold;
-        result = 31 * result + Double.hashCode(shortDocumentPenalty);
-        result = 31 * result + Double.hashCode(domainRankBonus);
-        result = 31 * result + Double.hashCode(qualityPenalty);
-        result = 31 * result + shortSentenceThreshold;
-        result = 31 * result + Double.hashCode(shortSentencePenalty);
-        result = 31 * result + Double.hashCode(bm25Weight);
-        result = 31 * result + Double.hashCode(tcfFirstPosition);
-        result = 31 * result + Double.hashCode(tcfVerbatim);
-        result = 31 * result + Double.hashCode(tcfProximity);
-        result = 31 * result + Objects.hashCode(temporalBias);
-        result = 31 * result + Double.hashCode(temporalBiasWeight);
-        result = 31 * result + Boolean.hashCode(disablePenalties);
-        result = 31 * result + Boolean.hashCode(exportDebugData);
-        return result;
-    }
-
-    public String toString() {
-        return "ResultRankingParameters(bm25Params=" + this.getBm25Params() + ", shortDocumentThreshold=" + this.getShortDocumentThreshold() + ", shortDocumentPenalty=" + this.getShortDocumentPenalty() + ", domainRankBonus=" + this.getDomainRankBonus() + ", qualityPenalty=" + this.getQualityPenalty() + ", shortSentenceThreshold=" + this.getShortSentenceThreshold() + ", shortSentencePenalty=" + this.getShortSentencePenalty() + ", bm25Weight=" + this.getBm25Weight() + ", tcfFirstPosition=" + this.getTcfFirstPosition() + ", tcfVerbatim=" + this.getTcfVerbatim() + ", tcfProximity=" + this.getTcfProximity() + ", temporalBias=" + this.getTemporalBias() + ", temporalBiasWeight=" + this.getTemporalBiasWeight() + ", exportDebugData=" + this.isExportDebugData() + ")";
-    }
-
-    public enum TemporalBias {
-        RECENT, OLD, NONE
-    }
-
-    public static class ResultRankingParametersBuilder {
-        private Bm25Parameters bm25Params;
-        private int shortDocumentThreshold;
-        private double shortDocumentPenalty;
-        private double domainRankBonus;
-        private double qualityPenalty;
-        private int shortSentenceThreshold;
-        private double shortSentencePenalty;
-        private double bm25Weight;
-        private double tcfFirstPosition;
-        private double tcfVerbatim;
-        private double tcfProximity;
-        private TemporalBias temporalBias;
-        private double temporalBiasWeight;
-        private boolean disablePenalties;
-        private boolean exportDebugData;
-
-        ResultRankingParametersBuilder() {
-        }
-
-        public ResultRankingParametersBuilder bm25Params(Bm25Parameters bm25Params) {
-            this.bm25Params = bm25Params;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder shortDocumentThreshold(int shortDocumentThreshold) {
-            this.shortDocumentThreshold = shortDocumentThreshold;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder shortDocumentPenalty(double shortDocumentPenalty) {
-            this.shortDocumentPenalty = shortDocumentPenalty;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder domainRankBonus(double domainRankBonus) {
-            this.domainRankBonus = domainRankBonus;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder qualityPenalty(double qualityPenalty) {
-            this.qualityPenalty = qualityPenalty;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder shortSentenceThreshold(int shortSentenceThreshold) {
-            this.shortSentenceThreshold = shortSentenceThreshold;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder shortSentencePenalty(double shortSentencePenalty) {
-            this.shortSentencePenalty = shortSentencePenalty;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder bm25Weight(double bm25Weight) {
-            this.bm25Weight = bm25Weight;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder tcfFirstPosition(double tcfFirstPosition) {
-            this.tcfFirstPosition = tcfFirstPosition;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder tcfVerbatim(double tcfVerbatim) {
-            this.tcfVerbatim = tcfVerbatim;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder tcfProximity(double tcfProximity) {
-            this.tcfProximity = tcfProximity;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder temporalBias(TemporalBias temporalBias) {
-            this.temporalBias = temporalBias;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder temporalBiasWeight(double temporalBiasWeight) {
-            this.temporalBiasWeight = temporalBiasWeight;
-            return this;
-        }
-
-
-        public ResultRankingParametersBuilder disablePenalties(boolean disablePenalties) {
-            this.disablePenalties = disablePenalties;
-            return this;
-        }
-
-        public ResultRankingParametersBuilder exportDebugData(boolean exportDebugData) {
-            this.exportDebugData = exportDebugData;
-            return this;
-        }
-
-        public ResultRankingParameters build() {
-            return new ResultRankingParameters(this.bm25Params, this.shortDocumentThreshold, this.shortDocumentPenalty, this.domainRankBonus, this.qualityPenalty, this.shortSentenceThreshold, this.shortSentencePenalty, this.bm25Weight, this.tcfFirstPosition, this.tcfVerbatim, this.tcfProximity, this.temporalBias, this.temporalBiasWeight, this.disablePenalties, this.exportDebugData);
-        }
-
-    }
-}

code/functions/search-query/api/test/nu/marginalia/index/client/IndexProtobufCodecTest.java

@@ -3,8 +3,6 @@ package nu.marginalia.index.client;
 import nu.marginalia.api.searchquery.IndexProtobufCodec;
 import nu.marginalia.api.searchquery.model.query.SearchPhraseConstraint;
 import nu.marginalia.api.searchquery.model.query.SearchQuery;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
-import nu.marginalia.index.query.limit.QueryLimits;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 import org.junit.jupiter.api.Test;
 
@@ -22,18 +20,6 @@ class IndexProtobufCodecTest {
         verifyIsIdentityTransformation(SpecificationLimit.lessThan(1), l -> IndexProtobufCodec.convertSpecLimit(IndexProtobufCodec.convertSpecLimit(l)));
     }
 
-    @Test
-    public void testRankingParameters() {
-        verifyIsIdentityTransformation(ResultRankingParameters.sensibleDefaults(),
-                p -> IndexProtobufCodec.convertRankingParameterss(IndexProtobufCodec.convertRankingParameterss(p, null)));
-    }
-
-    @Test
-    public void testQueryLimits() {
-        verifyIsIdentityTransformation(new QueryLimits(1,2,3,4),
-                l -> IndexProtobufCodec.convertQueryLimits(IndexProtobufCodec.convertQueryLimits(l))
-                );
-    }
     @Test
     public void testSubqery() {
         verifyIsIdentityTransformation(new SearchQuery(

code/functions/search-query/java/nu/marginalia/functions/searchquery/QueryFactory.java

@@ -2,8 +2,9 @@ package nu.marginalia.functions.searchquery;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
 import nu.marginalia.api.searchquery.model.query.*;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
 import nu.marginalia.functions.searchquery.query_parser.QueryExpansion;
 import nu.marginalia.functions.searchquery.query_parser.QueryParser;
 import nu.marginalia.functions.searchquery.query_parser.token.QueryToken;
@@ -36,7 +37,7 @@ public class QueryFactory {
 
 
     public ProcessedQuery createQuery(QueryParams params,
-                                      @Nullable ResultRankingParameters rankingParams) {
+                                      @Nullable RpcResultRankingParameters rankingParams) {
         final var query = params.humanQuery();
 
         if (query.length() > 1000) {
@@ -132,7 +133,9 @@ public class QueryFactory {
         var limits = params.limits();
         // Disable limits on number of results per domain if we're searching with a site:-type term
         if (domain != null) {
-            limits = limits.forSingleDomain();
+            limits = RpcQueryLimits.newBuilder(limits)
+                    .setResultsByDomain(limits.getResultsTotal())
+                    .build();
         }
 
         var expansion = queryExpansion.expandQuery(queryBuilder.searchTermsInclude);

code/functions/search-query/java/nu/marginalia/functions/searchquery/QueryGRPCService.java

@@ -9,7 +9,7 @@ import nu.marginalia.api.searchquery.*;
 import nu.marginalia.api.searchquery.model.query.ProcessedQuery;
 import nu.marginalia.api.searchquery.model.query.QueryParams;
 import nu.marginalia.api.searchquery.model.results.DecoratedSearchResultItem;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
+import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
 import nu.marginalia.index.api.IndexClient;
 import nu.marginalia.service.server.DiscoverableService;
 import org.slf4j.Logger;
@@ -55,7 +55,7 @@ public class QueryGRPCService
                     .time(() -> {
 
                 var params = QueryProtobufCodec.convertRequest(request);
-                var query = queryFactory.createQuery(params, ResultRankingParameters.sensibleDefaults());
+                var query = queryFactory.createQuery(params, PrototypeRankingParameters.sensibleDefaults());
 
                 var indexRequest = QueryProtobufCodec.convertQuery(request, query);
 
@@ -102,7 +102,7 @@ public class QueryGRPCService
             String originalQuery,
             QueryParams params,
             IndexClient.Pagination pagination,
-            ResultRankingParameters rankingParameters) {
+            RpcResultRankingParameters rankingParameters) {
 
         var query = queryFactory.createQuery(params, rankingParameters);
         IndexClient.AggregateQueryResponse response = indexClient.executeQueries(QueryProtobufCodec.convertQuery(originalQuery, query), pagination);

code/functions/search-query/java/nu/marginalia/functions/searchquery/query_parser/QueryExpansion.java

@@ -134,6 +134,10 @@ public class QueryExpansion {
                 if (scoreCombo > scoreA + scoreB || scoreCombo > 1000) {
                     graph.addVariantForSpan(prev, qw, joinedWord);
                 }
+                else if (StringUtils.isAlpha(prev.word()) && StringUtils.isNumeric(qw.word())) { // join e.g. trs 80 to trs80 and trs-80
+                    graph.addVariantForSpan(prev, qw, prev.word() + qw.word());
+                    graph.addVariantForSpan(prev, qw, prev.word() + "-" + qw.word());
+                }
             }
 
             prev = qw;

code/functions/search-query/test/nu/marginalia/query/svc/QueryFactoryTest.java

@@ -1,12 +1,12 @@
 package nu.marginalia.query.svc;
 
 import nu.marginalia.WmsaHome;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
+import nu.marginalia.api.searchquery.RpcTemporalBias;
 import nu.marginalia.api.searchquery.model.query.QueryParams;
 import nu.marginalia.api.searchquery.model.query.SearchSpecification;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
 import nu.marginalia.functions.searchquery.QueryFactory;
 import nu.marginalia.functions.searchquery.query_parser.QueryExpansion;
-import nu.marginalia.index.query.limit.QueryLimits;
 import nu.marginalia.index.query.limit.QueryStrategy;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 import nu.marginalia.index.query.limit.SpecificationLimitType;
@@ -49,10 +49,15 @@ public class QueryFactoryTest {
                         SpecificationLimit.none(),
                         SpecificationLimit.none(),
                         null,
-                        new QueryLimits(100, 100, 100, 100),
+                        RpcQueryLimits.newBuilder()
+                                .setResultsTotal(100)
+                                .setResultsByDomain(100)
+                                .setTimeoutMs(100)
+                                .setFetchSize(100)
+                                .build(),
                         "NONE",
                         QueryStrategy.AUTO,
-                        ResultRankingParameters.TemporalBias.NONE,
+                        RpcTemporalBias.Bias.NONE,
                         0), null).specs;
     }
 
@@ -208,6 +213,18 @@ public class QueryFactoryTest {
         System.out.println(subquery);
     }
 
+
+    @Test
+    public void testContractionWordNum() {
+        var subquery = parseAndGetSpecs("glove 80");
+
+        Assertions.assertTrue(subquery.query.compiledQuery.contains(" glove "));
+        Assertions.assertTrue(subquery.query.compiledQuery.contains(" 80 "));
+        Assertions.assertTrue(subquery.query.compiledQuery.contains(" glove-80 "));
+        Assertions.assertTrue(subquery.query.compiledQuery.contains(" glove80 "));
+    }
+
+
     @Test
     public void testCplusPlus() {
         var subquery = parseAndGetSpecs("std::vector::push_back vector");

code/index/api/java/nu/marginalia/index/api/IndexClient.java

@@ -16,20 +16,19 @@ import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.Comparator;
-import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
-
-import static java.lang.Math.clamp;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
 
 @Singleton
 public class IndexClient {
     private static final Logger logger = LoggerFactory.getLogger(IndexClient.class);
     private final GrpcMultiNodeChannelPool<IndexApiGrpc.IndexApiBlockingStub> channelPool;
     private final DomainBlacklistImpl blacklist;
-    private static final ExecutorService executor = Executors.newVirtualThreadPerTaskExecutor();
+    private static final ExecutorService executor = Executors.newCachedThreadPool();
 
     @Inject
     public IndexClient(GrpcChannelPoolFactory channelPoolFactory, DomainBlacklistImpl blacklist) {
@@ -51,40 +50,37 @@ public class IndexClient {
 
     /** Execute a query on the index partitions and return the combined results. */
     public AggregateQueryResponse executeQueries(RpcIndexQuery indexRequest, Pagination pagination) {
-        List<CompletableFuture<Iterator<RpcDecoratedResultItem>>> futures =
-                channelPool.call(IndexApiGrpc.IndexApiBlockingStub::query)
-                        .async(executor)
-                        .runEach(indexRequest);
 
         final int requestedMaxResults = indexRequest.getQueryLimits().getResultsTotal();
-        final int resultsUpperBound = requestedMaxResults * channelPool.getNumNodes();
 
-        List<RpcDecoratedResultItem> results = new ArrayList<>(resultsUpperBound);
+        AtomicInteger totalNumResults = new AtomicInteger(0);
 
-        for (var future : futures) {
+        List<RpcDecoratedResultItem> results =
+                channelPool.call(IndexApiGrpc.IndexApiBlockingStub::query)
+                        .async(executor)
+                        .runEach(indexRequest)
+                        .stream()
+                        .map(future -> future.thenApply(iterator -> {
+                            List<RpcDecoratedResultItem> ret = new ArrayList<>(requestedMaxResults);
+                            iterator.forEachRemaining(ret::add);
+                            totalNumResults.addAndGet(ret.size());
+                            return ret;
+                        }))
+                        .mapMulti((CompletableFuture<List<RpcDecoratedResultItem>> fut, Consumer<List<RpcDecoratedResultItem>> c) ->{
                             try {
-                future.get().forEachRemaining(results::add);
-            }
-            catch (Exception e) {
-                logger.error("Downstream exception", e);
-            }
+                                c.accept(fut.join());
+                            } catch (Exception e) {
+                                logger.error("Error while fetching results", e);
                             }
+                        })
+                        .flatMap(List::stream)
+                        .filter(item -> !isBlacklisted(item))
+                        .sorted(comparator)
+                        .skip(Math.max(0, (pagination.page - 1) * pagination.pageSize))
+                        .limit(pagination.pageSize)
+                        .toList();
 
-        // Sort the results by ranking score and remove blacklisted domains
-        results.sort(comparator);
-        results.removeIf(this::isBlacklisted);
-
-        int numReceivedResults = results.size();
-
-        // pagination is typically 1-indexed, so we need to adjust the start and end indices
-        int indexStart = (pagination.page - 1) * pagination.pageSize;
-        int indexEnd = (pagination.page) * pagination.pageSize;
-
-        results = results.subList(
-                clamp(indexStart, 0, Math.max(0, results.size() - 1)), // from is inclusive, so subtract 1 from size()
-                clamp(indexEnd, 0, results.size()));
-
-        return new AggregateQueryResponse(results, pagination.page(), numReceivedResults);
+        return new AggregateQueryResponse(results, pagination.page(), totalNumResults.get());
     }
 
     private boolean isBlacklisted(RpcDecoratedResultItem item) {

code/index/java/nu/marginalia/index/IndexGrpcService.java

@@ -10,12 +10,12 @@ import it.unimi.dsi.fastutil.longs.LongArrayList;
 import nu.marginalia.api.searchquery.IndexApiGrpc;
 import nu.marginalia.api.searchquery.RpcDecoratedResultItem;
 import nu.marginalia.api.searchquery.RpcIndexQuery;
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQuery;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQueryLong;
 import nu.marginalia.api.searchquery.model.compiled.CqDataInt;
 import nu.marginalia.api.searchquery.model.query.SearchSpecification;
 import nu.marginalia.api.searchquery.model.results.ResultRankingContext;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
 import nu.marginalia.array.page.LongQueryBuffer;
 import nu.marginalia.index.index.StatefulIndex;
 import nu.marginalia.index.model.SearchParameters;
@@ -211,7 +211,7 @@ public class IndexGrpcService
     /** This class is responsible for ranking the results and adding the best results to the
      * resultHeap, which depending on the state of the indexLookup threads may or may not block
      */
-    private ResultRankingContext createRankingContext(ResultRankingParameters rankingParams,
+    private ResultRankingContext createRankingContext(RpcResultRankingParameters rankingParams,
                                                       CompiledQuery<String> compiledQuery,
                                                       CompiledQueryLong compiledQueryIds)
     {

code/index/java/nu/marginalia/index/model/SearchParameters.java

@@ -2,12 +2,13 @@ package nu.marginalia.index.model;
 
 import nu.marginalia.api.searchquery.IndexProtobufCodec;
 import nu.marginalia.api.searchquery.RpcIndexQuery;
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQuery;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQueryLong;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQueryParser;
-import nu.marginalia.api.searchquery.model.query.SearchSpecification;
 import nu.marginalia.api.searchquery.model.query.SearchQuery;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
+import nu.marginalia.api.searchquery.model.query.SearchSpecification;
+import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
 import nu.marginalia.index.query.IndexSearchBudget;
 import nu.marginalia.index.query.limit.QueryStrategy;
 import nu.marginalia.index.searchset.SearchSet;
@@ -23,7 +24,7 @@ public class SearchParameters {
     public final IndexSearchBudget budget;
     public final SearchQuery query;
     public final QueryParams queryParams;
-    public final ResultRankingParameters rankingParams;
+    public final RpcResultRankingParameters rankingParams;
 
     public final int limitByDomain;
     public final int limitTotal;
@@ -41,11 +42,11 @@ public class SearchParameters {
     public SearchParameters(SearchSpecification specsSet, SearchSet searchSet) {
         var limits = specsSet.queryLimits;
 
-        this.fetchSize = limits.fetchSize();
-        this.budget = new IndexSearchBudget(limits.timeoutMs());
+        this.fetchSize = limits.getFetchSize();
+        this.budget = new IndexSearchBudget(limits.getTimeoutMs());
         this.query = specsSet.query;
-        this.limitByDomain = limits.resultsByDomain();
-        this.limitTotal = limits.resultsTotal();
+        this.limitByDomain = limits.getResultsByDomain();
+        this.limitTotal = limits.getResultsTotal();
 
         queryParams = new QueryParams(
                 specsSet.quality,
@@ -62,17 +63,17 @@ public class SearchParameters {
     }
 
     public SearchParameters(RpcIndexQuery request, SearchSet searchSet) {
-        var limits = IndexProtobufCodec.convertQueryLimits(request.getQueryLimits());
+        var limits = request.getQueryLimits();
 
-        this.fetchSize = limits.fetchSize();
+        this.fetchSize = limits.getFetchSize();
 
         // The time budget is halved because this is the point when we start to
         // wrap up the search and return the results.
-        this.budget = new IndexSearchBudget(limits.timeoutMs() / 2);
+        this.budget = new IndexSearchBudget(limits.getTimeoutMs() / 2);
         this.query = IndexProtobufCodec.convertRpcQuery(request.getQuery());
 
-        this.limitByDomain = limits.resultsByDomain();
-        this.limitTotal = limits.resultsTotal();
+        this.limitByDomain = limits.getResultsByDomain();
+        this.limitTotal = limits.getResultsTotal();
 
         queryParams = new QueryParams(
                 convertSpecLimit(request.getQuality()),
@@ -85,7 +86,7 @@ public class SearchParameters {
         compiledQuery = CompiledQueryParser.parse(this.query.compiledQuery);
         compiledQueryIds = compiledQuery.mapToLong(SearchTermsUtil::getWordId);
 
-        rankingParams = IndexProtobufCodec.convertRankingParameterss(request.getParameters());
+        rankingParams = request.hasParameters() ? request.getParameters() : PrototypeRankingParameters.sensibleDefaults();
     }
 
 

code/index/java/nu/marginalia/index/results/Bm25GraphVisitor.java

@@ -2,7 +2,6 @@ package nu.marginalia.index.results;
 
 import nu.marginalia.api.searchquery.model.compiled.CqDataInt;
 import nu.marginalia.api.searchquery.model.compiled.CqExpression;
-import nu.marginalia.api.searchquery.model.results.Bm25Parameters;
 import nu.marginalia.api.searchquery.model.results.ResultRankingContext;
 
 import java.util.BitSet;
@@ -24,14 +23,14 @@ public class Bm25GraphVisitor implements CqExpression.DoubleVisitor {
 
     private final BitSet mask;
 
-    public Bm25GraphVisitor(Bm25Parameters bm25Parameters,
+    public Bm25GraphVisitor(double k1, double b,
                             float[] counts,
                             int length,
                             ResultRankingContext ctx) {
         this.length = length;
 
-        this.k1 = bm25Parameters.k();
-        this.b = bm25Parameters.b();
+        this.k1 = k1;
+        this.b = b;
 
         this.docCount = ctx.termFreqDocCount();
         this.counts = counts;

code/index/java/nu/marginalia/index/results/DomainRankingOverrides.java

@@ -0,0 +1,119 @@
+package nu.marginalia.index.results;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import gnu.trove.map.hash.TIntDoubleHashMap;
+import nu.marginalia.WmsaHome;
+import nu.marginalia.db.DbDomainQueries;
+import nu.marginalia.model.EdgeDomain;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.OptionalInt;
+import java.util.concurrent.TimeUnit;
+
+@Singleton
+public class DomainRankingOverrides {
+    private final DbDomainQueries domainQueries;
+
+    private volatile TIntDoubleHashMap rankingFactors = new TIntDoubleHashMap(100, 0.75f, -1, 1.);
+
+    private static final Logger logger = LoggerFactory.getLogger(DomainRankingOverrides.class);
+
+    private final Path overrideFilePath;
+
+    @Inject
+    public DomainRankingOverrides(DbDomainQueries domainQueries) {
+        this.domainQueries = domainQueries;
+
+        overrideFilePath = WmsaHome.getDataPath().resolve("domain-ranking-factors.txt");
+
+        Thread.ofPlatform().start(this::updateRunner);
+    }
+
+    // for test access
+    public DomainRankingOverrides(DbDomainQueries domainQueries, Path overrideFilePath)
+    {
+        this.domainQueries = domainQueries;
+        this.overrideFilePath = overrideFilePath;
+    }
+
+
+    public double getRankingFactor(int domainId) {
+        return rankingFactors.get(domainId);
+    }
+
+    private void updateRunner() {
+        for (;;) {
+            reloadFile();
+
+            try {
+                TimeUnit.MINUTES.sleep(5);
+            } catch (InterruptedException ex) {
+                logger.warn("Thread interrupted", ex);
+                break;
+            }
+        }
+    }
+
+    void reloadFile() {
+        if (!Files.exists(overrideFilePath)) {
+            return;
+        }
+
+        try {
+            List<String> lines = Files.readAllLines(overrideFilePath);
+
+            double factor = 1.;
+
+            var newRankingFactors = new TIntDoubleHashMap(lines.size(), 0.75f, -1, 1.);
+
+            for (var line : lines) {
+                if (line.isBlank()) continue;
+                if (line.startsWith("#")) continue;
+
+                String[] parts = line.split("\\s+");
+                if (parts.length != 2) {
+                    logger.warn("Unrecognized format for domain overrides file: {}", line);
+                    continue;
+                }
+
+                try {
+                    switch (parts[0]) {
+                        case "value" -> {
+                            // error handle me
+                            factor = Double.parseDouble(parts[1]);
+                            if (factor < 0) {
+                                logger.error("Negative values are not permitted, found {}", factor);
+                                factor = 1;
+                            }
+                        }
+                        case "domain" -> {
+                            // error handle
+                            OptionalInt domainId = domainQueries.tryGetDomainId(new EdgeDomain(parts[1]));
+                            if (domainId.isPresent()) {
+                                newRankingFactors.put(domainId.getAsInt(), factor);
+                            }
+                            else {
+                                logger.warn("Unrecognized domain id {}", parts[1]);
+                            }
+                        }
+                        default -> {
+                            logger.warn("Unrecognized format {}", line);
+                        }
+                    }
+                } catch (Exception ex) {
+                    logger.warn("Error in parsing domain overrides file: {} ({})", line, ex.getClass().getSimpleName());
+                }
+            }
+
+            rankingFactors = newRankingFactors;
+        } catch (IOException ex) {
+            logger.error("Failed to read " + overrideFilePath, ex);
+        }
+    }
+}

code/index/java/nu/marginalia/index/results/IndexResultRankingService.java

@@ -40,13 +40,16 @@ public class IndexResultRankingService {
 
     private final DocumentDbReader documentDbReader;
     private final StatefulIndex statefulIndex;
+    private final DomainRankingOverrides domainRankingOverrides;
 
     @Inject
     public IndexResultRankingService(DocumentDbReader documentDbReader,
-                                     StatefulIndex statefulIndex)
+                                     StatefulIndex statefulIndex,
+                                     DomainRankingOverrides domainRankingOverrides)
     {
         this.documentDbReader = documentDbReader;
         this.statefulIndex = statefulIndex;
+        this.domainRankingOverrides = domainRankingOverrides;
     }
 
     public List<SearchResultItem> rankResults(SearchParameters params,
@@ -57,7 +60,7 @@ public class IndexResultRankingService {
         if (resultIds.isEmpty())
             return List.of();
 
-        IndexResultScoreCalculator resultRanker = new IndexResultScoreCalculator(statefulIndex, rankingContext, params);
+        IndexResultScoreCalculator resultRanker = new IndexResultScoreCalculator(statefulIndex, domainRankingOverrides, rankingContext, params);
 
         List<SearchResultItem> results = new ArrayList<>(resultIds.size());
 
@@ -156,7 +159,7 @@ public class IndexResultRankingService {
         // for the selected results, as this would be comically expensive to do for all the results we
         // discard along the way
 
-        if (params.rankingParams.exportDebugData) {
+        if (params.rankingParams.getExportDebugData()) {
             var combinedIdsList = new LongArrayList(resultsList.size());
             for (var item : resultsList) {
                 combinedIdsList.add(item.combinedId);

code/index/java/nu/marginalia/index/results/IndexResultScoreCalculator.java

@@ -2,10 +2,11 @@ package nu.marginalia.index.results;
 
 import it.unimi.dsi.fastutil.ints.IntIterator;
 import it.unimi.dsi.fastutil.ints.IntList;
+import nu.marginalia.api.searchquery.RpcResultRankingParameters;
+import nu.marginalia.api.searchquery.RpcTemporalBias;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQuery;
 import nu.marginalia.api.searchquery.model.compiled.CompiledQueryLong;
 import nu.marginalia.api.searchquery.model.results.ResultRankingContext;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
 import nu.marginalia.api.searchquery.model.results.SearchResultItem;
 import nu.marginalia.api.searchquery.model.results.debug.DebugRankingFactors;
 import nu.marginalia.index.forward.spans.DocumentSpans;
@@ -40,14 +41,17 @@ public class IndexResultScoreCalculator {
     private final CombinedIndexReader index;
     private final QueryParams queryParams;
 
+    private final DomainRankingOverrides domainRankingOverrides;
     private final ResultRankingContext rankingContext;
     private final CompiledQuery<String> compiledQuery;
 
     public IndexResultScoreCalculator(StatefulIndex statefulIndex,
+                                      DomainRankingOverrides domainRankingOverrides,
                                       ResultRankingContext rankingContext,
                                       SearchParameters params)
     {
         this.index = statefulIndex.get();
+        this.domainRankingOverrides = domainRankingOverrides;
         this.rankingContext = rankingContext;
 
         this.queryParams = params.queryParams;
@@ -116,20 +120,20 @@ public class IndexResultScoreCalculator {
 
         float proximitiyFac = getProximitiyFac(decodedPositions, searchTerms.phraseConstraints, verbatimMatches, unorderedMatches, spans);
 
-        double score_firstPosition = params.tcfFirstPosition * (1.0 / Math.sqrt(unorderedMatches.firstPosition));
-        double score_verbatim = params.tcfVerbatim * verbatimMatches.getScore();
-        double score_proximity = params.tcfProximity * proximitiyFac;
-        double score_bM25 = params.bm25Weight
-                * wordFlagsQuery.root.visit(new Bm25GraphVisitor(params.bm25Params, unorderedMatches.getWeightedCounts(), docSize, rankingContext))
+        double score_firstPosition = params.getTcfFirstPositionWeight() * (1.0 / Math.sqrt(unorderedMatches.firstPosition));
+        double score_verbatim = params.getTcfVerbatimWeight() * verbatimMatches.getScore();
+        double score_proximity = params.getTcfProximityWeight() * proximitiyFac;
+        double score_bM25 = params.getBm25Weight()
+                * wordFlagsQuery.root.visit(new Bm25GraphVisitor(params.getBm25K(), params.getBm25B(), unorderedMatches.getWeightedCounts(), docSize, rankingContext))
                 / (Math.sqrt(unorderedMatches.searchableKeywordCount + 1));
-        double score_bFlags = params.bm25Weight
-                * wordFlagsQuery.root.visit(new TermFlagsGraphVisitor(params.bm25Params, wordFlagsQuery.data, unorderedMatches.getWeightedCounts(), rankingContext))
+        double score_bFlags = params.getBm25Weight()
+                * wordFlagsQuery.root.visit(new TermFlagsGraphVisitor(params.getBm25K(), wordFlagsQuery.data, unorderedMatches.getWeightedCounts(), rankingContext))
                 / (Math.sqrt(unorderedMatches.searchableKeywordCount + 1));
 
+        double rankingAdjustment = domainRankingOverrides.getRankingFactor(UrlIdCodec.getDomainId(combinedId));
+
         double score = normalize(
-                score_firstPosition + score_proximity + score_verbatim
-                        + score_bM25
-                        + score_bFlags,
+                rankingAdjustment * (score_firstPosition + score_proximity + score_verbatim + score_bM25 + score_bFlags),
                 -Math.min(0, documentBonus) // The magnitude of documentBonus, if it is negative; otherwise 0
         );
 
@@ -245,10 +249,10 @@ public class IndexResultScoreCalculator {
     private double calculateDocumentBonus(long documentMetadata,
                                           int features,
                                           int length,
-                                          ResultRankingParameters rankingParams,
+                                          RpcResultRankingParameters rankingParams,
                                           @Nullable DebugRankingFactors debugRankingFactors) {
 
-        if (rankingParams.disablePenalties) {
+        if (rankingParams.getDisablePenalties()) {
             return 0.;
         }
 
@@ -260,18 +264,18 @@ public class IndexResultScoreCalculator {
         int topology = DocumentMetadata.decodeTopology(documentMetadata);
         int year = DocumentMetadata.decodeYear(documentMetadata);
 
-        double averageSentenceLengthPenalty = (asl >= rankingParams.shortSentenceThreshold ? 0 : -rankingParams.shortSentencePenalty);
+        double averageSentenceLengthPenalty = (asl >= rankingParams.getShortSentenceThreshold() ? 0 : -rankingParams.getShortSentencePenalty());
 
         final double qualityPenalty = calculateQualityPenalty(size, quality, rankingParams);
-        final double rankingBonus = (255. - rank) * rankingParams.domainRankBonus;
+        final double rankingBonus = (255. - rank) * rankingParams.getDomainRankBonus();
         final double topologyBonus = Math.log(1 + topology);
-        final double documentLengthPenalty = length > rankingParams.shortDocumentThreshold ? 0 : -rankingParams.shortDocumentPenalty;
+        final double documentLengthPenalty = length > rankingParams.getShortDocumentThreshold() ? 0 : -rankingParams.getShortDocumentPenalty();
         final double temporalBias;
 
-        if (rankingParams.temporalBias == ResultRankingParameters.TemporalBias.RECENT) {
-            temporalBias = - Math.abs(year - PubDate.MAX_YEAR) * rankingParams.temporalBiasWeight;
-        } else if (rankingParams.temporalBias == ResultRankingParameters.TemporalBias.OLD) {
-            temporalBias = - Math.abs(year - PubDate.MIN_YEAR) * rankingParams.temporalBiasWeight;
+        if (rankingParams.getTemporalBias().getBias() == RpcTemporalBias.Bias.RECENT) {
+            temporalBias = - Math.abs(year - PubDate.MAX_YEAR) * rankingParams.getTemporalBiasWeight();
+        } else if (rankingParams.getTemporalBias().getBias() == RpcTemporalBias.Bias.OLD) {
+            temporalBias = - Math.abs(year - PubDate.MIN_YEAR) * rankingParams.getTemporalBiasWeight();
         } else {
             temporalBias = 0;
         }
@@ -510,14 +514,14 @@ public class IndexResultScoreCalculator {
     }
 
 
-    private double calculateQualityPenalty(int size, int quality, ResultRankingParameters rankingParams) {
+    private double calculateQualityPenalty(int size, int quality, RpcResultRankingParameters rankingParams) {
         if (size < 400) {
             if (quality < 5)
                 return 0;
-            return -quality * rankingParams.qualityPenalty;
+            return -quality * rankingParams.getQualityPenalty();
         }
         else {
-            return -quality * rankingParams.qualityPenalty * 20;
+            return -quality * rankingParams.getQualityPenalty() * 20;
         }
     }
 
@@ -579,3 +583,4 @@ public class IndexResultScoreCalculator {
     }
 
 }
+

code/index/java/nu/marginalia/index/results/TermFlagsGraphVisitor.java

@@ -3,7 +3,6 @@ package nu.marginalia.index.results;
 import nu.marginalia.api.searchquery.model.compiled.CqDataInt;
 import nu.marginalia.api.searchquery.model.compiled.CqDataLong;
 import nu.marginalia.api.searchquery.model.compiled.CqExpression;
-import nu.marginalia.api.searchquery.model.results.Bm25Parameters;
 import nu.marginalia.api.searchquery.model.results.ResultRankingContext;
 import nu.marginalia.model.idx.WordFlags;
 
@@ -15,15 +14,14 @@ public class TermFlagsGraphVisitor implements CqExpression.DoubleVisitor {
     private final CqDataLong wordMetaData;
     private final CqDataInt frequencies;
     private final float[] counts;
-    private final Bm25Parameters bm25Parameters;
-
+    private final double k1;
     private final int docCount;
 
-    public TermFlagsGraphVisitor(Bm25Parameters bm25Parameters,
+    public TermFlagsGraphVisitor(double k1,
                                  CqDataLong wordMetaData,
                                  float[] counts,
                                  ResultRankingContext ctx) {
-        this.bm25Parameters = bm25Parameters;
+        this.k1 = k1;
         this.counts = counts;
         this.docCount = ctx.termFreqDocCount();
         this.wordMetaData = wordMetaData;
@@ -55,7 +53,7 @@ public class TermFlagsGraphVisitor implements CqExpression.DoubleVisitor {
         int freq = frequencies.get(idx);
 
         // note we override b to zero for priority terms as they are independent of document length
-        return invFreq(docCount, freq) * f(bm25Parameters.k(), 0, count, 0);
+        return invFreq(docCount, freq) * f(k1, 0, count, 0);
     }
 
     private double evaluatePriorityScore(int idx) {

code/index/query/java/nu/marginalia/index/query/limit/QueryLimits.java

@@ -1,7 +0,0 @@
-package nu.marginalia.index.query.limit;
-
-public record QueryLimits(int resultsByDomain, int resultsTotal, int timeoutMs, int fetchSize) {
-    public QueryLimits forSingleDomain() {
-        return new QueryLimits(resultsTotal, resultsTotal, timeoutMs, fetchSize);
-    }
-}

code/index/test/nu/marginalia/index/IndexQueryServiceIntegrationSmokeTest.java

@@ -4,10 +4,11 @@ import com.google.inject.Guice;
 import com.google.inject.Inject;
 import nu.marginalia.IndexLocations;
 import nu.marginalia.api.searchquery.RpcDecoratedResultItem;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
 import nu.marginalia.api.searchquery.model.query.SearchPhraseConstraint;
 import nu.marginalia.api.searchquery.model.query.SearchQuery;
 import nu.marginalia.api.searchquery.model.query.SearchSpecification;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
+import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
 import nu.marginalia.index.construction.DocIdRewriter;
 import nu.marginalia.index.construction.full.FullIndexConstructor;
 import nu.marginalia.index.construction.prio.PrioIndexConstructor;
@@ -17,7 +18,6 @@ import nu.marginalia.index.forward.construction.ForwardIndexConverter;
 import nu.marginalia.index.index.StatefulIndex;
 import nu.marginalia.index.journal.IndexJournal;
 import nu.marginalia.index.journal.IndexJournalSlopWriter;
-import nu.marginalia.index.query.limit.QueryLimits;
 import nu.marginalia.index.query.limit.QueryStrategy;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 import nu.marginalia.linkdb.docs.DocumentDbReader;
@@ -115,9 +115,16 @@ public class IndexQueryServiceIntegrationSmokeTest {
 
         var rsp = queryService.justQuery(
                 SearchSpecification.builder()
-                        .queryLimits(new QueryLimits(10, 10, Integer.MAX_VALUE, 4000))
+                        .queryLimits(
+                                RpcQueryLimits.newBuilder()
+                                        .setResultsByDomain(10)
+                                        .setResultsTotal(10)
+                                        .setTimeoutMs(Integer.MAX_VALUE)
+                                        .setFetchSize(4000)
+                                        .build()
+                        )
                         .queryStrategy(QueryStrategy.SENTENCE)
-                        .rankingParams(ResultRankingParameters.sensibleDefaults())
+                        .rankingParams(PrototypeRankingParameters.sensibleDefaults())
                         .domains(new ArrayList<>())
                         .searchSetIdentifier("NONE")
                         .query(
@@ -171,9 +178,16 @@ public class IndexQueryServiceIntegrationSmokeTest {
 
         var rsp = queryService.justQuery(
                 SearchSpecification.builder()
-                        .queryLimits(new QueryLimits(10, 10, Integer.MAX_VALUE, 4000))
+                        .queryLimits(
+                                RpcQueryLimits.newBuilder()
+                                        .setResultsByDomain(10)
+                                        .setResultsTotal(10)
+                                        .setTimeoutMs(Integer.MAX_VALUE)
+                                        .setFetchSize(4000)
+                                        .build()
+                        )
                         .queryStrategy(QueryStrategy.SENTENCE)
-                        .rankingParams(ResultRankingParameters.sensibleDefaults())
+                        .rankingParams(PrototypeRankingParameters.sensibleDefaults())
                         .domains(new ArrayList<>())
                         .searchSetIdentifier("NONE")
                         .query(
@@ -225,8 +239,15 @@ public class IndexQueryServiceIntegrationSmokeTest {
 
         var rsp = queryService.justQuery(
                 SearchSpecification.builder()
-                        .queryLimits(new QueryLimits(10, 10, Integer.MAX_VALUE, 4000))
-                        .rankingParams(ResultRankingParameters.sensibleDefaults())
+                        .queryLimits(
+                                RpcQueryLimits.newBuilder()
+                                        .setResultsByDomain(10)
+                                        .setResultsTotal(10)
+                                        .setTimeoutMs(Integer.MAX_VALUE)
+                                        .setFetchSize(4000)
+                                        .build()
+                        )
+                        .rankingParams(PrototypeRankingParameters.sensibleDefaults())
                         .queryStrategy(QueryStrategy.SENTENCE)
                         .domains(List.of(2))
                         .query(
@@ -282,11 +303,18 @@ public class IndexQueryServiceIntegrationSmokeTest {
 
         var rsp = queryService.justQuery(
                 SearchSpecification.builder()
-                        .queryLimits(new QueryLimits(10, 10, Integer.MAX_VALUE, 4000))
+                        .queryLimits(
+                                RpcQueryLimits.newBuilder()
+                                        .setResultsByDomain(10)
+                                        .setResultsTotal(10)
+                                        .setTimeoutMs(Integer.MAX_VALUE)
+                                        .setFetchSize(4000)
+                                        .build()
+                        )
                         .year(SpecificationLimit.equals(1998))
                         .queryStrategy(QueryStrategy.SENTENCE)
                         .searchSetIdentifier("NONE")
-                        .rankingParams(ResultRankingParameters.sensibleDefaults())
+                        .rankingParams(PrototypeRankingParameters.sensibleDefaults())
                         .query(
                             SearchQuery.builder()
                                 .compiledQuery("4")

code/index/test/nu/marginalia/index/IndexQueryServiceIntegrationTest.java

@@ -4,10 +4,11 @@ import com.google.inject.Guice;
 import com.google.inject.Inject;
 import it.unimi.dsi.fastutil.ints.IntList;
 import nu.marginalia.IndexLocations;
+import nu.marginalia.api.searchquery.RpcQueryLimits;
 import nu.marginalia.api.searchquery.model.query.SearchPhraseConstraint;
 import nu.marginalia.api.searchquery.model.query.SearchQuery;
 import nu.marginalia.api.searchquery.model.query.SearchSpecification;
-import nu.marginalia.api.searchquery.model.results.ResultRankingParameters;
+import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
 import nu.marginalia.hash.MurmurHash3_128;
 import nu.marginalia.index.construction.DocIdRewriter;
 import nu.marginalia.index.construction.full.FullIndexConstructor;
@@ -18,7 +19,6 @@ import nu.marginalia.index.forward.construction.ForwardIndexConverter;
 import nu.marginalia.index.index.StatefulIndex;
 import nu.marginalia.index.journal.IndexJournal;
 import nu.marginalia.index.journal.IndexJournalSlopWriter;
-import nu.marginalia.index.query.limit.QueryLimits;
 import nu.marginalia.index.query.limit.QueryStrategy;
 import nu.marginalia.index.query.limit.SpecificationLimit;
 import nu.marginalia.linkdb.docs.DocumentDbReader;
@@ -389,13 +389,20 @@ public class IndexQueryServiceIntegrationTest {
     SearchSpecification basicQuery(Function<SearchSpecification.SearchSpecificationBuilder, SearchSpecification.SearchSpecificationBuilder> mutator)
     {
         var builder = SearchSpecification.builder()
-                .queryLimits(new QueryLimits(10, 10, Integer.MAX_VALUE, 4000))
+                .queryLimits(
+                        RpcQueryLimits.newBuilder()
+                                .setResultsByDomain(10)
+                                .setResultsTotal(10)
+                                .setTimeoutMs(Integer.MAX_VALUE)
+                                .setFetchSize(4000)
+                                .build()
+                )
                 .queryStrategy(QueryStrategy.SENTENCE)
                 .year(SpecificationLimit.none())
                 .quality(SpecificationLimit.none())
                 .size(SpecificationLimit.none())
                 .rank(SpecificationLimit.none())
-                .rankingParams(ResultRankingParameters.sensibleDefaults())
+                .rankingParams(PrototypeRankingParameters.sensibleDefaults())
                 .domains(new ArrayList<>())
                 .searchSetIdentifier("NONE");
 

code/index/test/nu/marginalia/index/results/DomainRankingOverridesTest.java

@@ -0,0 +1,103 @@
+package nu.marginalia.index.results;
+
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.db.DbDomainQueries;
+import nu.marginalia.model.EdgeDomain;
+import nu.marginalia.test.TestMigrationLoader;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.parallel.Execution;
+import org.junit.jupiter.api.parallel.ExecutionMode;
+import org.testcontainers.containers.MariaDBContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.sql.SQLException;
+
+@Testcontainers
+@Execution(ExecutionMode.SAME_THREAD)
+@Tag("slow")
+class DomainRankingOverridesTest {
+    @Container
+    static MariaDBContainer<?> mariaDBContainer = new MariaDBContainer<>("mariadb")
+            .withDatabaseName("WMSA_prod")
+            .withUsername("wmsa")
+            .withPassword("wmsa")
+            .withNetworkAliases("mariadb");
+
+    private static DbDomainQueries domainQueries;
+
+    @BeforeAll
+    public static void setup() throws SQLException {
+        HikariConfig config = new HikariConfig();
+        config.setJdbcUrl(mariaDBContainer.getJdbcUrl());
+        config.setUsername("wmsa");
+        config.setPassword("wmsa");
+
+        var dataSource = new HikariDataSource(config);
+
+        TestMigrationLoader.flywayMigration(dataSource);
+
+        try (var conn = dataSource.getConnection();
+             var stmt = conn.createStatement()) {
+            stmt.executeQuery("DELETE FROM EC_DOMAIN"); // Wipe any old state from other test runs
+
+            stmt.executeQuery("INSERT INTO EC_DOMAIN (DOMAIN_NAME, DOMAIN_TOP, NODE_AFFINITY) VALUES ('first.example.com', 'example.com', 1)");
+            stmt.executeQuery("INSERT INTO EC_DOMAIN (DOMAIN_NAME, DOMAIN_TOP, NODE_AFFINITY) VALUES ('second.example.com', 'example.com', 1)");
+            stmt.executeQuery("INSERT INTO EC_DOMAIN (DOMAIN_NAME, DOMAIN_TOP, NODE_AFFINITY) VALUES ('third.example.com', 'example.com', 1)");
+            stmt.executeQuery("INSERT INTO EC_DOMAIN (DOMAIN_NAME, DOMAIN_TOP, NODE_AFFINITY) VALUES ('not-added.example.com', 'example.com', 1)");
+        }
+
+        domainQueries = new DbDomainQueries(dataSource);
+
+    }
+
+    @Test
+    public void test() throws IOException {
+
+        Path overridesFile = Files.createTempFile(getClass().getSimpleName(), ".txt");
+        try {
+
+            Files.writeString(overridesFile, """
+                    # A comment
+                    value 0.75
+                    domain first.example.com
+                    domain second.example.com
+                    
+                    value 1.1
+                    domain third.example.com
+                    """,
+                    StandardOpenOption.APPEND);
+
+            var overrides = new DomainRankingOverrides(domainQueries, overridesFile);
+
+            overrides.reloadFile();
+
+            Assertions.assertEquals(0.75, overrides.getRankingFactor(
+                    domainQueries.getDomainId(new EdgeDomain("first.example.com"))
+            ));
+            Assertions.assertEquals(0.75, overrides.getRankingFactor(
+                    domainQueries.getDomainId(new EdgeDomain("second.example.com"))
+            ));
+            Assertions.assertEquals(1.1, overrides.getRankingFactor(
+                    domainQueries.getDomainId(new EdgeDomain("third.example.com"))
+            ));
+            Assertions.assertEquals(1.0, overrides.getRankingFactor(
+                    domainQueries.getDomainId(new EdgeDomain("not-added.example.com"))
+            ));
+            Assertions.assertEquals(1.0, overrides.getRankingFactor(1<<23));
+
+        }
+        finally {
+            Files.deleteIfExists(overridesFile);
+        }
+    }
+
+}

code/libraries/blocking-thread-pool/java/nu/marginalia/util/SimpleBlockingThreadPool.java

@@ -23,16 +23,33 @@ public class SimpleBlockingThreadPool {
     private final Logger logger = LoggerFactory.getLogger(SimpleBlockingThreadPool.class);
 
     public SimpleBlockingThreadPool(String name, int poolSize, int queueSize) {
+        this(name, poolSize, queueSize, ThreadType.PLATFORM);
+    }
+
+    public SimpleBlockingThreadPool(String name, int poolSize, int queueSize, ThreadType threadType) {
         tasks = new ArrayBlockingQueue<>(queueSize);
 
         for (int i = 0; i < poolSize; i++) {
-            Thread worker = new Thread(this::worker, name  + "[" + i + "]");
-            worker.setDaemon(true);
-            worker.start();
+
+            Thread.Builder threadBuilder = switch (threadType) {
+                case VIRTUAL -> Thread.ofVirtual();
+                case PLATFORM -> Thread.ofPlatform().daemon(true);
+            };
+
+            Thread worker = threadBuilder
+                    .name(name  + "[" + i + "]")
+                    .start(this::worker);
+
             workers.add(worker);
         }
 
     }
+
+    public enum ThreadType {
+        VIRTUAL,
+        PLATFORM
+    }
+
     public void submit(Task task) throws InterruptedException {
         tasks.put(task);
     }

code/libraries/coded-sequence/java/nu/marginalia/sequence/slop/GammaCodedSequenceArrayColumn.java

@@ -45,6 +45,11 @@ public class GammaCodedSequenceArrayColumn extends AbstractObjectColumn<List<Gam
         );
     }
 
+    @Override
+    public int alignmentSize() {
+        return 1;
+    }
+
     public Reader openUnregistered(URI uri, int page) throws IOException {
         return new Reader(
                 dataColumn.openUnregistered(uri, page),
@@ -109,6 +114,11 @@ public class GammaCodedSequenceArrayColumn extends AbstractObjectColumn<List<Gam
             dataReader.skip(toSkip);
         }
 
+        @Override
+        public boolean isDirect() {
+            return dataReader.isDirect();
+        }
+
         @Override
         public boolean hasRemaining() throws IOException {
             return groupsReader.hasRemaining();

code/libraries/coded-sequence/java/nu/marginalia/sequence/slop/GammaCodedSequenceColumn.java

@@ -44,6 +44,11 @@ public class GammaCodedSequenceColumn extends AbstractObjectColumn<GammaCodedSeq
         );
     }
 
+    @Override
+    public int alignmentSize() {
+        return 1;
+    }
+
     public Reader openUnregistered(URI uri, int page) throws IOException {
         return new Reader(
                 Storage.reader(uri, this, page, false),
@@ -96,6 +101,11 @@ public class GammaCodedSequenceColumn extends AbstractObjectColumn<GammaCodedSeq
             this.indexReader = indexReader;
         }
 
+        @Override
+        public boolean isDirect() {
+            return storage.isDirect();
+        }
+
         @Override
         public AbstractColumn<?, ?> columnDesc() {
             return GammaCodedSequenceColumn.this;

code/libraries/coded-sequence/java/nu/marginalia/sequence/slop/VarintCodedSequenceArrayColumn.java

@@ -45,6 +45,11 @@ public class VarintCodedSequenceArrayColumn extends AbstractObjectColumn<List<Va
         );
     }
 
+    @Override
+    public int alignmentSize() {
+        return 0;
+    }
+
     public Reader openUnregistered(URI uri, int page) throws IOException {
         return new Reader(
                 dataColumn.openUnregistered(uri, page),
@@ -109,6 +114,11 @@ public class VarintCodedSequenceArrayColumn extends AbstractObjectColumn<List<Va
             dataReader.skip(toSkip);
         }
 
+        @Override
+        public boolean isDirect() {
+            return dataReader.isDirect();
+        }
+
         @Override
         public boolean hasRemaining() throws IOException {
             return groupsReader.hasRemaining();

code/libraries/coded-sequence/java/nu/marginalia/sequence/slop/VarintCodedSequenceColumn.java

@@ -44,6 +44,11 @@ public class VarintCodedSequenceColumn extends AbstractObjectColumn<VarintCodedS
         );
     }
 
+    @Override
+    public int alignmentSize() {
+        return 1;
+    }
+
     public Reader openUnregistered(URI uri, int page) throws IOException {
         return new Reader(
                 Storage.reader(uri, this, page, false),
@@ -101,6 +106,11 @@ public class VarintCodedSequenceColumn extends AbstractObjectColumn<VarintCodedS
             return VarintCodedSequenceColumn.this;
         }
 
+        @Override
+        public boolean isDirect() {
+            return storage.isDirect();
+        }
+
         @Override
         public void skip(long positions) throws IOException {
             for (int i = 0; i < positions; i++) {

code/libraries/language-processing/java/nu/marginalia/language/sentence/SentenceExtractor.java

@@ -155,8 +155,15 @@ public class SentenceExtractor {
     public List<DocumentSentence> extractSentencesFromString(String text, EnumSet<HtmlTag> htmlTags) {
         String[] sentences;
 
-        // Normalize spaces
+        // Safety net against malformed data DOS attacks,
+        // found 5+ MB <p>-tags in the wild that just break
+        // the sentence extractor causing it to stall forever.
+        if (text.length() > 50_000) {
+            // 50k chars can hold a small novel, let alone single html tags
+            text = text.substring(0, 50_000);
+        }
 
+        // Normalize spaces
         text = normalizeSpaces(text);
 
         // Split into sentences

code/libraries/message-queue/java/nu/marginalia/actor/prototype/RecordActorPrototype.java

@@ -5,9 +5,7 @@ import nu.marginalia.actor.state.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
+import java.util.*;
 
 public abstract class RecordActorPrototype implements ActorPrototype {
 
@@ -118,7 +116,7 @@ public abstract class RecordActorPrototype implements ActorPrototype {
         }
 
         private String functionName(Class<? extends ActorStep> functionClass) {
-            return functionClass.getSimpleName().toUpperCase();
+            return ActorStep.functionName(functionClass);
         }
 
         private ActorStep constructState(String message) throws ReflectiveOperationException {
@@ -145,4 +143,43 @@ public abstract class RecordActorPrototype implements ActorPrototype {
         }
     }
 
+    /** Get a list of JSON prototypes for each actor step declared by this actor */
+    @SuppressWarnings("unchecked")
+    public Map<String, String> getMessagePrototypes() {
+        Map<String, String> messagePrototypes = new HashMap<>();
+
+        for (var clazz : getClass().getDeclaredClasses()) {
+            if (!clazz.isRecord() || !ActorStep.class.isAssignableFrom(clazz))
+                continue;
+
+            StringJoiner sj = new StringJoiner(",\n\t", "{\n\t", "\n}");
+
+            renderToJsonPrototype(sj, (Class<? extends Record>) clazz);
+
+            messagePrototypes.put(ActorStep.functionName((Class<? extends ActorStep>) clazz), sj.toString());
+        }
+
+        return messagePrototypes;
+    }
+
+    @SuppressWarnings("unchecked")
+    private void renderToJsonPrototype(StringJoiner sj, Class<? extends Record> recordType) {
+        for (var field : recordType.getDeclaredFields()) {
+            String typeName = field.getType().getSimpleName();
+
+            if ("List".equals(typeName)) {
+                sj.add(String.format("\"%s\": [ ]", field.getName()));
+            }
+            else if (field.getType().isRecord()) {
+                var innerSj = new StringJoiner(",", "{", "}");
+                renderToJsonPrototype(innerSj, (Class<? extends Record>) field.getType());
+                sj.add(String.format("\"%s\": %s", field.getName(), sj));
+            }
+            else {
+                sj.add(String.format("\"%s\": \"%s\"", field.getName(), typeName));
+            }
+        }
+
+    }
+
 }

code/libraries/message-queue/java/nu/marginalia/actor/state/ActorStep.java

@@ -1,3 +1,7 @@
 package nu.marginalia.actor.state;
 
-public interface ActorStep {}
+public interface ActorStep {
+    static String functionName(Class<? extends ActorStep> type) {
+        return type.getSimpleName().toUpperCase();
+    }
+}

code/processes/converting-process/build.gradle

@@ -87,6 +87,8 @@ dependencies {
     implementation libs.commons.compress
     implementation libs.sqlite
 
+    implementation libs.bundles.httpcomponents
+
     testImplementation libs.bundles.slf4j.test
     testImplementation libs.bundles.junit
     testImplementation libs.mockito

code/processes/converting-process/java/nu/marginalia/converting/ConverterMain.java

@@ -12,7 +12,6 @@ import nu.marginalia.converting.sideload.SideloadSourceFactory;
 import nu.marginalia.converting.writer.ConverterBatchWritableIf;
 import nu.marginalia.converting.writer.ConverterBatchWriter;
 import nu.marginalia.converting.writer.ConverterWriter;
-import nu.marginalia.io.CrawledDomainReader;
 import nu.marginalia.io.SerializableCrawlDataStream;
 import nu.marginalia.mq.MessageQueueFactory;
 import nu.marginalia.mqapi.converting.ConvertRequest;
@@ -36,6 +35,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.sql.SQLException;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Optional;
@@ -51,6 +51,7 @@ public class ConverterMain extends ProcessMainClass {
     private final ProcessHeartbeat heartbeat;
     private final FileStorageService fileStorageService;
     private final SideloadSourceFactory sideloadSourceFactory;
+    private static final int SIDELOAD_THRESHOLD = Integer.getInteger("converter.sideloadThreshold", 10_000);
 
     public static void main(String... args) throws Exception {
 
@@ -201,12 +202,26 @@ public class ConverterMain extends ProcessMainClass {
             processedDomains.set(batchingWorkLog.size());
             heartbeat.setProgress(processedDomains.get() / (double) totalDomains);
 
-            for (var domain : WorkLog.iterableMap(crawlDir.getLogFile(),
+            logger.info("Processing small items");
+
+            // We separate the large and small domains to reduce the number of critical sections,
+            // as the large domains have a separate processing track that doesn't store everything
+            // in memory
+
+            final List<Path> bigTasks = new ArrayList<>();
+
+            // First process the small items
+            for (var dataPath : WorkLog.iterableMap(crawlDir.getLogFile(),
                     new CrawlDataLocator(crawlDir.getDir(), batchingWorkLog)))
             {
+                if (SerializableCrawlDataStream.getSizeHint(dataPath) >= SIDELOAD_THRESHOLD) {
+                    bigTasks.add(dataPath);
+                    continue;
+                }
+
                 pool.submit(() -> {
-                    try {
-                        ConverterBatchWritableIf writable = processor.createWritable(domain);
+                    try (var dataStream = SerializableCrawlDataStream.openDataStream(dataPath)) {
+                        ConverterBatchWritableIf writable = processor.fullProcessing(dataStream) ;
                         converterWriter.accept(writable);
                     }
                     catch (Exception ex) {
@@ -225,10 +240,39 @@ public class ConverterMain extends ProcessMainClass {
             do {
                 System.out.println("Waiting for pool to terminate... " + pool.getActiveCount() + " remaining");
             } while (!pool.awaitTermination(60, TimeUnit.SECONDS));
+
+            logger.info("Processing large items");
+
+            try (var hb = heartbeat.createAdHocTaskHeartbeat("Large Domains")) {
+                int bigTaskIdx = 0;
+                // Next the big items domain-by-domain
+                for (var dataPath : bigTasks) {
+                    hb.progress(dataPath.toFile().getName(), bigTaskIdx++, bigTasks.size());
+
+                    try {
+                        // SerializableCrawlDataStream is autocloseable, we can't try-with-resources because then it will be
+                        // closed before it's consumed by the converterWriter.  Instead, the converterWriter guarantees it
+                        // will close it after it's consumed.
+
+                        var stream = SerializableCrawlDataStream.openDataStream(dataPath);
+                        ConverterBatchWritableIf writable = processor.simpleProcessing(stream, SerializableCrawlDataStream.getSizeHint(dataPath));
+
+                        converterWriter.accept(writable);
+                    }
+                    catch (Exception ex) {
+                        logger.info("Error in processing", ex);
+                    }
+                    finally {
+                        heartbeat.setProgress(processedDomains.incrementAndGet() / (double) totalDomains);
+                    }
                 }
             }
 
-    private static class CrawlDataLocator implements Function<WorkLogEntry, Optional<SerializableCrawlDataStream>> {
+            logger.info("Processing complete");
+        }
+    }
+
+    private static class CrawlDataLocator implements Function<WorkLogEntry, Optional<Path>> {
 
         private final Path crawlRootDir;
         private final BatchingWorkLog batchingWorkLog;
@@ -239,7 +283,7 @@ public class ConverterMain extends ProcessMainClass {
         }
 
         @Override
-        public Optional<SerializableCrawlDataStream> apply(WorkLogEntry entry) {
+        public Optional<Path> apply(WorkLogEntry entry) {
             if (batchingWorkLog.isItemProcessed(entry.id())) {
                 return Optional.empty();
             }
@@ -252,7 +296,7 @@ public class ConverterMain extends ProcessMainClass {
             }
 
             try {
-                return Optional.of(CrawledDomainReader.createDataStream(path));
+                return Optional.of(path);
             }
             catch (Exception ex) {
                 return Optional.empty();

code/processes/converting-process/java/nu/marginalia/converting/processor/DocumentProcessor.java

@@ -19,6 +19,7 @@ import nu.marginalia.model.idx.WordFlags;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.IOException;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.List;
@@ -91,7 +92,7 @@ public class DocumentProcessor {
                                  DocumentClass documentClass,
                                  DocumentDecorator documentDecorator,
                                  DomainLinks externalDomainLinks,
-                                 ProcessedDocument ret) throws URISyntaxException, DisqualifiedException
+                                 ProcessedDocument ret) throws URISyntaxException, IOException, DisqualifiedException
     {
 
         var crawlerStatus = CrawlerDocumentStatus.valueOf(crawledDocument.crawlerStatus);
@@ -109,7 +110,7 @@ public class DocumentProcessor {
 
         ret.state = crawlerStatusToUrlState(crawledDocument.crawlerStatus, crawledDocument.httpStatus);
 
-        final var plugin = findPlugin(crawledDocument);
+        AbstractDocumentProcessorPlugin plugin = findPlugin(crawledDocument);
 
         EdgeUrl url = new EdgeUrl(crawledDocument.url);
         LinkTexts linkTexts = anchorTextKeywords.getAnchorTextKeywords(externalDomainLinks, url);

code/processes/converting-process/java/nu/marginalia/converting/processor/DomainProcessor.java

@@ -32,7 +32,6 @@ import java.util.*;
 import java.util.regex.Pattern;
 
 public class DomainProcessor {
-    private static final int SIDELOAD_THRESHOLD = Integer.getInteger("converter.sideloadThreshold", 10_000);
     private final DocumentProcessor documentProcessor;
     private final SiteWords siteWords;
     private final AnchorTagsSource anchorTagsSource;
@@ -54,21 +53,9 @@ public class DomainProcessor {
         geoIpDictionary.waitReady();
     }
 
-    public ConverterBatchWritableIf createWritable(SerializableCrawlDataStream domain) {
-        final int sizeHint = domain.sizeHint();
-
-        if (sizeHint > SIDELOAD_THRESHOLD) {
-            // If the file is too big, we run a processing mode that doesn't
-            // require loading the entire dataset into RAM
-            return sideloadProcessing(domain, sizeHint);
-        }
-
-        return fullProcessing(domain);
-    }
-
-    public SideloadProcessing sideloadProcessing(SerializableCrawlDataStream dataStream, int sizeHint, Collection<String> extraKeywords) {
+    public SimpleProcessing simpleProcessing(SerializableCrawlDataStream dataStream, int sizeHint, Collection<String> extraKeywords) {
         try {
-            return new SideloadProcessing(dataStream, sizeHint, extraKeywords);
+            return new SimpleProcessing(dataStream, sizeHint, extraKeywords);
         }
         catch (Exception ex) {
             logger.warn("Failed to process domain sideload", ex);
@@ -76,9 +63,9 @@ public class DomainProcessor {
         }
     }
 
-    public SideloadProcessing sideloadProcessing(SerializableCrawlDataStream dataStream, int sizeHint) {
+    public SimpleProcessing simpleProcessing(SerializableCrawlDataStream dataStream, int sizeHint) {
         try {
-            return new SideloadProcessing(dataStream, sizeHint);
+            return new SimpleProcessing(dataStream, sizeHint);
         }
         catch (Exception ex) {
             logger.warn("Failed to process domain sideload", ex);
@@ -86,22 +73,84 @@ public class DomainProcessor {
         }
     }
 
-    public class SideloadProcessing implements ConverterBatchWritableIf, SideloadSource {
+    @Nullable
+    public ProcessedDomain fullProcessing(SerializableCrawlDataStream dataStream) {
+        try {
+            if (!dataStream.hasNext()) {
+                return null;
+            }
+
+            List<ProcessedDocument> docs = new ArrayList<>();
+            Set<String> processedUrls = new HashSet<>();
+
+            if (!(dataStream.next() instanceof CrawledDomain crawledDomain)) {
+                throw new IllegalStateException("First record must be a domain, was " + dataStream.next().getClass().getSimpleName());
+            }
+
+            DomainLinks externalDomainLinks = anchorTagsSource.getAnchorTags(crawledDomain.getDomain());
+            DocumentDecorator documentDecorator = new DocumentDecorator();
+
+            // Process Domain Record
+
+            ProcessedDomain ret = new ProcessedDomain();
+            processDomain(crawledDomain, ret, documentDecorator);
+            ret.documents = docs;
+
+            // Process Documents
+
+            try (var deduplicator = new LshDocumentDeduplicator()) {
+                while (dataStream.hasNext()) {
+                    if (!(dataStream.next() instanceof CrawledDocument doc))
+                        continue;
+                    if (doc.url == null)
+                        continue;
+                    if (doc.documentBodyBytes.length == 0)
+                        continue;
+                    if (!processedUrls.add(doc.url))
+                        continue;
+
+                    try {
+                        var processedDoc = documentProcessor.process(doc, ret.domain, externalDomainLinks, documentDecorator);
+                        deduplicator.markIfDuplicate(processedDoc);
+                        docs.add(processedDoc);
+                    } catch (Exception ex) {
+                        logger.warn("Failed to process " + doc.url, ex);
+                    }
+                }
+            }
+
+            // Add late keywords and features from domain-level information
+
+            calculateStatistics(ret, externalDomainLinks);
+
+            return ret;
+        }
+        catch (Exception ex) {
+            logger.warn("Failed to process domain", ex);
+            return null;
+        }
+    }
+
+    /** The simple processing track processes documents individually, and does not perform any domain-level analysis.
+     *  This is needed to process extremely large domains, which would otherwise eat up too much RAM.
+     */
+    public class SimpleProcessing implements ConverterBatchWritableIf, SideloadSource {
         private final SerializableCrawlDataStream dataStream;
         private final ProcessedDomain domain;
         private final DocumentDecorator documentDecorator;
         private final Set<String> processedUrls = new HashSet<>();
         private final DomainLinks externalDomainLinks;
         private final LshDocumentDeduplicator deduplicator = new LshDocumentDeduplicator();
+
         private static final ProcessingIterator.Factory iteratorFactory = ProcessingIterator.factory(8,
                 Integer.getInteger("java.util.concurrent.ForkJoinPool.common.parallelism", Runtime.getRuntime().availableProcessors())
         );
 
-        SideloadProcessing(SerializableCrawlDataStream dataStream, int sizeHint) throws IOException {
+        SimpleProcessing(SerializableCrawlDataStream dataStream, int sizeHint) throws IOException {
             this(dataStream, sizeHint, List.of());
         }
 
-        SideloadProcessing(SerializableCrawlDataStream dataStream, int sizeHint, Collection<String> extraKeywords) throws IOException {
+        SimpleProcessing(SerializableCrawlDataStream dataStream, int sizeHint, Collection<String> extraKeywords) throws IOException {
             this.dataStream = dataStream;
 
             if (!dataStream.hasNext() || !(dataStream.next() instanceof CrawledDomain crawledDomain))
@@ -128,6 +177,7 @@ public class DomainProcessor {
         @Override
         public Iterator<ProcessedDocument> getDocumentsStream() {
             return iteratorFactory.create((taskConsumer) -> {
+
                 while (dataStream.hasNext())
                 {
                     if (!(dataStream.next() instanceof CrawledDocument doc))
@@ -172,65 +222,6 @@ public class DomainProcessor {
         }
     }
 
-
-    @Nullable
-    public ProcessedDomain fullProcessing(SerializableCrawlDataStream dataStream) {
-        try {
-            if (!dataStream.hasNext()) {
-                return null;
-            }
-
-            List<ProcessedDocument> docs = new ArrayList<>();
-            Set<String> processedUrls = new HashSet<>();
-
-            if (!(dataStream.next() instanceof CrawledDomain crawledDomain)) {
-                throw new IllegalStateException("First record must be a domain, was " + dataStream.next().getClass().getSimpleName());
-            }
-
-            DomainLinks externalDomainLinks = anchorTagsSource.getAnchorTags(crawledDomain.getDomain());
-            DocumentDecorator documentDecorator = new DocumentDecorator();
-
-            // Process Domain Record
-
-            ProcessedDomain ret = new ProcessedDomain();
-            processDomain(crawledDomain, ret, documentDecorator);
-            ret.documents = docs;
-
-            // Process Documents
-
-            try (var deduplicator = new LshDocumentDeduplicator()) {
-                while (dataStream.hasNext()) {
-                    if (!(dataStream.next() instanceof CrawledDocument doc))
-                        continue;
-                    if (doc.url == null)
-                        continue;
-                    if (doc.documentBody.isBlank())
-                        continue;
-                    if (!processedUrls.add(doc.url))
-                        continue;
-
-                    try {
-                        var processedDoc = documentProcessor.process(doc, ret.domain, externalDomainLinks, documentDecorator);
-                        deduplicator.markIfDuplicate(processedDoc);
-                        docs.add(processedDoc);
-                    } catch (Exception ex) {
-                        logger.warn("Failed to process " + doc.url, ex);
-                    }
-                }
-            }
-
-            // Add late keywords and features from domain-level information
-
-            calculateStatistics(ret, externalDomainLinks);
-
-            return ret;
-        }
-        catch (Exception ex) {
-            logger.warn("Failed to process domain", ex);
-            return null;
-        }
-    }
-
     private void processDomain(CrawledDomain crawledDomain,
                                           ProcessedDomain domain,
                                           DocumentDecorator decorator)

code/processes/converting-process/java/nu/marginalia/converting/processor/classifier/adblock/AdblockSimulator.java

@@ -116,7 +116,7 @@ public class AdblockSimulator {
 
 
     // Refrain from cleaning up this code, it's very hot code and needs to be fast.
-    // This version is about 100x faster than the a "clean" first stab implementation.
+    // This version is about 100x faster than a "clean" first stab implementation.
 
     class RuleVisitor implements NodeFilter {
         public boolean sawAds;

code/processes/converting-process/java/nu/marginalia/converting/processor/logic/DocumentGeneratorExtractor.java

@@ -23,7 +23,7 @@ public class DocumentGeneratorExtractor {
 
         var tags = doc.select("meta[name=generator]");
 
-        if (tags.size() == 0) {
+        if (tags.isEmpty()) {
             // Some sites have a comment in the head instead of a meta tag
             return fingerprintServerTech(doc, responseHeaders);
         }

code/processes/converting-process/java/nu/marginalia/converting/processor/logic/DocumentValuator.java

@@ -24,7 +24,7 @@ public class DocumentValuator {
         double scriptPenalty = getScriptPenalty(parsedDocument);
         double chatGptPenalty = getChatGptContentFarmPenalty(parsedDocument);
 
-        int rawLength = crawledDocument.documentBody.length();
+        int rawLength = crawledDocument.documentBodyBytes.length;
 
         if (textLength == 0) {
             throw new DisqualifiedException(DisqualifiedException.DisqualificationReason.LENGTH);

code/processes/converting-process/java/nu/marginalia/converting/processor/logic/FeatureExtractor.java

@@ -218,7 +218,10 @@ public class FeatureExtractor {
             }
         }
 
-        if (features.contains(HtmlFeature.JS) && adblockSimulator.hasAds(doc.clone())) {
+        if (features.contains(HtmlFeature.JS)
+            // remove while disabled to get rid of expensive clone() call:
+            // adblockSimulator.hasAds(doc.clone())
+            ) {
             features.add(HtmlFeature.ADVERTISEMENT);
         }
 

code/processes/converting-process/java/nu/marginalia/converting/processor/plugin/AbstractDocumentProcessorPlugin.java

@@ -14,6 +14,7 @@ import nu.marginalia.model.crawldata.CrawledDocument;
 import nu.marginalia.model.html.HtmlStandard;
 
 import javax.annotation.Nullable;
+import java.io.IOException;
 import java.net.URISyntaxException;
 import java.util.HashSet;
 import java.util.List;
@@ -25,7 +26,7 @@ public abstract class AbstractDocumentProcessorPlugin {
         this.languageFilter = languageFilter;
     }
 
-    public abstract DetailsWithWords createDetails(CrawledDocument crawledDocument, LinkTexts linkTexts, DocumentClass documentClass) throws DisqualifiedException, URISyntaxException;
+    public abstract DetailsWithWords createDetails(CrawledDocument crawledDocument, LinkTexts linkTexts, DocumentClass documentClass) throws DisqualifiedException, URISyntaxException, IOException;
     public abstract boolean isApplicable(CrawledDocument doc);
 
     protected void checkDocumentLanguage(DocumentLanguageData dld) throws DisqualifiedException {
@@ -86,6 +87,7 @@ public abstract class AbstractDocumentProcessorPlugin {
 
             return this;
         }
+
         public MetaTagsBuilder addPubDate(PubDate pubDate) {
 
             if (pubDate.year() > 1900) {

code/processes/converting-process/java/nu/marginalia/converting/processor/plugin/HtmlDocumentProcessorPlugin.java

@@ -6,6 +6,7 @@ import nu.marginalia.converting.model.DisqualifiedException;
 import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.model.GeneratorType;
 import nu.marginalia.converting.model.ProcessedDocumentDetails;
+import nu.marginalia.converting.processor.AcceptableAds;
 import nu.marginalia.converting.processor.DocumentClass;
 import nu.marginalia.converting.processor.MetaRobotsTag;
 import nu.marginalia.converting.processor.logic.*;
@@ -32,11 +33,11 @@ import nu.marginalia.model.crawldata.CrawledDocument;
 import nu.marginalia.model.html.HtmlStandard;
 import nu.marginalia.model.idx.DocumentFlags;
 import nu.marginalia.model.idx.DocumentMetadata;
-import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.IOException;
 import java.net.URISyntaxException;
 import java.util.EnumSet;
 import java.util.HashSet;
@@ -51,7 +52,6 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
     private final double minDocumentQuality;
 
     private final FeatureExtractor featureExtractor;
-    private final TitleExtractor titleExtractor;
     private final DocumentKeywordExtractor keywordExtractor;
     private final PubDateSniffer pubDateSniffer;
 
@@ -74,7 +74,6 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
             @Named("min-document-quality") Double minDocumentQuality,
             LanguageFilter languageFilter,
             FeatureExtractor featureExtractor,
-            TitleExtractor titleExtractor,
             DocumentKeywordExtractor keywordExtractor,
             PubDateSniffer pubDateSniffer,
             DocumentLengthLogic documentLengthLogic,
@@ -89,7 +88,6 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
         this.minDocumentQuality = minDocumentQuality;
         this.featureExtractor = featureExtractor;
 
-        this.titleExtractor = titleExtractor;
         this.keywordExtractor = keywordExtractor;
         this.pubDateSniffer = pubDateSniffer;
         this.metaRobotsTag = metaRobotsTag;
@@ -108,19 +106,17 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
     public DetailsWithWords createDetails(CrawledDocument crawledDocument,
                                           LinkTexts linkTexts,
                                           DocumentClass documentClass)
-            throws DisqualifiedException, URISyntaxException {
+            throws DisqualifiedException, URISyntaxException, IOException {
 
-        String documentBody = crawledDocument.documentBody;
-
-        if (languageFilter.isBlockedUnicodeRange(documentBody)) {
+        if (languageFilter.isBlockedUnicodeRange(crawledDocument.documentBody(512))) {
             throw new DisqualifiedException(DisqualificationReason.LANGUAGE);
         }
 
-        if (documentBody.length() > MAX_DOCUMENT_LENGTH_BYTES) { // 128kb
-            documentBody = documentBody.substring(0, MAX_DOCUMENT_LENGTH_BYTES);
-        }
+        Document doc = crawledDocument.parseBody();
 
-        Document doc = Jsoup.parse(documentBody);
+        if (AcceptableAds.hasAcceptableAdsTag(doc)) {
+            throw new DisqualifiedException(DisqualifiedException.DisqualificationReason.ACCEPTABLE_ADS);
+        }
 
         if (!metaRobotsTag.allowIndexingByMetaTag(doc)) {
             throw new DisqualifiedException(DisqualificationReason.FORBIDDEN);
@@ -138,32 +134,33 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
         }
 
         var prunedDoc = specialization.prune(doc);
-        DocumentLanguageData dld = sentenceExtractorProvider.get().extractSentences(prunedDoc);
 
-        checkDocumentLanguage(dld);
-
-        var ret = new ProcessedDocumentDetails();
 
         final int length = getLength(doc);
         final HtmlStandard standard = getHtmlStandard(doc);
         final double quality = documentValuator.getQuality(crawledDocument, standard, doc, length);
 
+        if (isDisqualified(documentClass, url, quality, doc.title())) {
+            throw new DisqualifiedException(DisqualificationReason.QUALITY);
+        }
+
+        DocumentLanguageData dld = sentenceExtractorProvider.get().extractSentences(prunedDoc);
+
+        checkDocumentLanguage(dld);
+        documentLengthLogic.validateLength(dld, specialization.lengthModifier() * documentClass.lengthLimitModifier());
+
+        var ret = new ProcessedDocumentDetails();
+
         ret.length = length;
         ret.standard = standard;
         ret.title = specialization.getTitle(doc, dld, crawledDocument.url);
 
-        documentLengthLogic.validateLength(dld, specialization.lengthModifier() * documentClass.lengthLimitModifier());
-
         final Set<HtmlFeature> features = featureExtractor.getFeatures(url, doc, documentHeaders, dld);
 
         ret.features = features;
         ret.quality = documentValuator.adjustQuality(quality, features);
         ret.hashCode = dld.localitySensitiveHashCode();
 
-        if (isDisqualified(documentClass, url, quality, ret.title)) {
-            throw new DisqualifiedException(DisqualificationReason.QUALITY);
-        }
-
         PubDate pubDate = pubDateSniffer.getPubDate(documentHeaders, url, doc, standard, true);
 
         EnumSet<DocumentFlags> documentFlags = documentFlags(features, generatorParts.type());

code/processes/converting-process/java/nu/marginalia/converting/processor/plugin/PlainTextDocumentProcessorPlugin.java

@@ -71,7 +71,7 @@ public class PlainTextDocumentProcessorPlugin extends AbstractDocumentProcessorP
                                           DocumentClass documentClass)
             throws DisqualifiedException, URISyntaxException {
 
-        String documentBody = crawledDocument.documentBody;
+        String documentBody = crawledDocument.documentBody();
 
         if (languageFilter.isBlockedUnicodeRange(documentBody)) {
             throw new DisqualifiedException(DisqualifiedException.DisqualificationReason.LANGUAGE);

code/processes/converting-process/java/nu/marginalia/converting/sideload/SideloaderProcessing.java

@@ -19,6 +19,7 @@ import nu.marginalia.model.idx.DocumentMetadata;
 import nu.marginalia.model.idx.WordFlags;
 
 import java.net.URISyntaxException;
+import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
 import java.util.EnumSet;
 import java.util.List;
@@ -50,7 +51,7 @@ public class SideloaderProcessing {
                 "OK",
                 "NP",
                 "",
-                body,
+                body.getBytes(StandardCharsets.UTF_8),
                 false,
                 null,
                 null

code/processes/converting-process/java/nu/marginalia/converting/sideload/encyclopedia/EncyclopediaMarginaliaNuSideloader.java

@@ -127,7 +127,7 @@ public class EncyclopediaMarginaliaNuSideloader implements SideloadSource, AutoC
         }
         fullHtml.append("</div></body></html>");
 
-        var doc = sideloaderProcessing
+        return sideloaderProcessing
                 .processDocument(fullUrl,
                         fullHtml.toString(),
                         List.of("encyclopedia", "wiki"),
@@ -137,8 +137,6 @@ public class EncyclopediaMarginaliaNuSideloader implements SideloadSource, AutoC
                         anchorTextKeywords.getAnchorTextKeywords(domainLinks, new EdgeUrl(fullUrl)),
                         LocalDate.now().getYear(),
                         10_000_000);
-
-        return doc;
     }
 
     private String normalizeUtf8(String url) {

code/processes/converting-process/java/nu/marginalia/converting/sideload/warc/WarcSideloader.java

@@ -106,11 +106,7 @@ public class WarcSideloader implements SideloadSource, AutoCloseable {
                 return false;
 
             var url = new EdgeUrl(warcResponse.target());
-            if (!Objects.equals(url.getDomain(), domain)) {
-                return false;
-            }
-
-            return true;
+            return Objects.equals(url.getDomain(), domain);
         } catch (Exception e) {
             logger.warn("Failed to process response", e);
         }

code/processes/converting-process/java/nu/marginalia/converting/writer/ConverterWriter.java

@@ -39,6 +39,9 @@ public class ConverterWriter implements AutoCloseable {
         workerThread.start();
     }
 
+    /** Queue and eventually write the domain into the converter journal
+     *  The domain object will be closed after it's processed.
+     * */
     public void accept(@Nullable ConverterBatchWritableIf domain) {
         if (null == domain)
             return;
@@ -72,15 +75,15 @@ public class ConverterWriter implements AutoCloseable {
 
                 if (workLog.isItemCommitted(id) || workLog.isItemInCurrentBatch(id)) {
                     logger.warn("Skipping already logged item {}", id);
+                }
+                else {
+                    currentWriter.write(data);
+                    workLog.logItem(id);
                     data.close();
-                    continue;
                 }
 
-                currentWriter.write(data);
-
-                workLog.logItem(id);
-
                 switcher.tick();
+                data.close();
             }
         }
         catch (Exception ex) {

code/processes/converting-process/model/java/nu/marginalia/model/processed/SlopDocumentRecord.java

@@ -11,7 +11,6 @@ import nu.marginalia.slop.column.primitive.IntColumn;
 import nu.marginalia.slop.column.primitive.LongColumn;
 import nu.marginalia.slop.column.string.EnumColumn;
 import nu.marginalia.slop.column.string.StringColumn;
-import nu.marginalia.slop.column.string.TxtStringColumn;
 import nu.marginalia.slop.desc.StorageType;
 import org.jetbrains.annotations.Nullable;
 
@@ -182,8 +181,8 @@ public record SlopDocumentRecord(
     }
 
     // Basic information
-    private static final TxtStringColumn domainsColumn = new TxtStringColumn("domain", StandardCharsets.UTF_8, StorageType.GZIP);
-    private static final TxtStringColumn urlsColumn = new TxtStringColumn("url", StandardCharsets.UTF_8, StorageType.GZIP);
+    private static final StringColumn domainsColumn = new StringColumn("domain", StandardCharsets.UTF_8, StorageType.GZIP);
+    private static final StringColumn urlsColumn = new StringColumn("url", StandardCharsets.UTF_8, StorageType.GZIP);
     private static final VarintColumn ordinalsColumn = new VarintColumn("ordinal", StorageType.PLAIN);
     private static final EnumColumn statesColumn = new EnumColumn("state", StandardCharsets.US_ASCII, StorageType.PLAIN);
     private static final StringColumn stateReasonsColumn = new StringColumn("stateReason", StandardCharsets.US_ASCII, StorageType.GZIP);
@@ -211,7 +210,7 @@ public record SlopDocumentRecord(
     private static final VarintCodedSequenceArrayColumn spansColumn = new VarintCodedSequenceArrayColumn("spans", StorageType.ZSTD);
 
     public static class KeywordsProjectionReader extends SlopTable {
-        private final TxtStringColumn.Reader domainsReader;
+        private final StringColumn.Reader domainsReader;
         private final VarintColumn.Reader ordinalsReader;
         private final IntColumn.Reader htmlFeaturesReader;
         private final LongColumn.Reader domainMetadataReader;
@@ -275,8 +274,8 @@ public record SlopDocumentRecord(
     }
 
     public static class MetadataReader extends SlopTable {
-        private final TxtStringColumn.Reader domainsReader;
-        private final TxtStringColumn.Reader urlsReader;
+        private final StringColumn.Reader domainsReader;
+        private final StringColumn.Reader urlsReader;
         private final VarintColumn.Reader ordinalsReader;
         private final StringColumn.Reader titlesReader;
         private final StringColumn.Reader descriptionsReader;
@@ -332,8 +331,8 @@ public record SlopDocumentRecord(
     }
 
     public static class Writer extends SlopTable {
-        private final TxtStringColumn.Writer domainsWriter;
-        private final TxtStringColumn.Writer urlsWriter;
+        private final StringColumn.Writer domainsWriter;
+        private final StringColumn.Writer urlsWriter;
         private final VarintColumn.Writer ordinalsWriter;
         private final EnumColumn.Writer statesWriter;
         private final StringColumn.Writer stateReasonsWriter;

code/processes/converting-process/test/nu/marginalia/converting/ConvertingIntegrationTest.java

@@ -98,7 +98,7 @@ public class ConvertingIntegrationTest {
 
     @Test
     public void testMemexMarginaliaNuSideloadProcessing() throws IOException {
-        var ret = domainProcessor.sideloadProcessing(asSerializableCrawlData(readMarginaliaWorkingSet()), 100);
+        var ret = domainProcessor.simpleProcessing(asSerializableCrawlData(readMarginaliaWorkingSet()), 100);
         assertNotNull(ret);
         assertEquals("memex.marginalia.nu", ret.id());
 
@@ -146,7 +146,7 @@ public class ConvertingIntegrationTest {
                     "OK",
                     "",
                     "",
-                    readClassPathFile(p.toString()),
+                    readClassPathFile(p.toString()).getBytes(),
                     false,
                     null,
                     null

code/processes/converting-process/test/nu/marginalia/converting/CrawlingThenConvertingIntegrationTest.java

@@ -200,23 +200,23 @@ public class CrawlingThenConvertingIntegrationTest {
 
     @Test
     public void crawlRobotsTxt() throws Exception {
-        var specs = new CrawlerMain.CrawlSpecRecord("search.marginalia.nu", 5,
-                        List.of("https://search.marginalia.nu/search?q=hello+world")
+        var specs = new CrawlerMain.CrawlSpecRecord("marginalia-search.com", 5,
+                        List.of("https://marginalia-search.com/search?q=hello+world")
         );
 
         CrawledDomain domain = crawl(specs);
         assertFalse(domain.doc.isEmpty());
         assertEquals("OK", domain.crawlerStatus);
-        assertEquals("search.marginalia.nu", domain.domain);
+        assertEquals("marginalia-search.com", domain.domain);
 
         Set<String> allUrls = domain.doc.stream().map(doc -> doc.url).collect(Collectors.toSet());
-        assertTrue(allUrls.contains("https://search.marginalia.nu/search"), "We expect a record for entities that are forbidden");
+        assertTrue(allUrls.contains("https://marginalia-search.com/search"), "We expect a record for entities that are forbidden");
 
         var output = process();
 
         assertNotNull(output);
         assertFalse(output.documents.isEmpty());
-        assertEquals(new EdgeDomain("search.marginalia.nu"), output.domain);
+        assertEquals(new EdgeDomain("marginalia-search.com"), output.domain);
         assertEquals(DomainIndexingState.ACTIVE, output.state);
 
         for (var doc : output.documents) {

code/processes/crawling-process/build.gradle

@@ -55,16 +55,19 @@ dependencies {
     implementation libs.zstd
     implementation libs.jwarc
     implementation libs.crawlercommons
-    implementation libs.okhttp3
     implementation libs.jsoup
     implementation libs.opencsv
     implementation libs.fastutil
 
     implementation libs.bundles.mariadb
+    implementation libs.bundles.httpcomponents
 
     testImplementation libs.bundles.slf4j.test
     testImplementation libs.bundles.junit
     testImplementation libs.mockito
+    testImplementation libs.wiremock
+
+
 
     testImplementation project(':code:processes:test-data')
 }

code/processes/crawling-process/ft-content-type/java/nu/marginalia/contenttype/ContentType.java

@@ -2,11 +2,16 @@ package nu.marginalia.contenttype;
 
 import org.apache.commons.lang3.StringUtils;
 
+import java.nio.charset.Charset;
+import java.nio.charset.IllegalCharsetNameException;
+import java.nio.charset.StandardCharsets;
+
 /** Content type and charset of a document
  * @param contentType The content type, e.g. "text/html"
  * @param charset The charset, e.g. "UTF-8"
  */
 public record ContentType(String contentType, String charset) {
+
     public static ContentType parse(String contentTypeHeader) {
         if (contentTypeHeader == null || contentTypeHeader.isBlank())
             return new ContentType(null,  null);
@@ -15,9 +20,31 @@ public record ContentType(String contentType, String charset) {
         String contentType = parts[0].trim();
         String charset = parts.length > 1 ? parts[1].trim() : "UTF-8";
 
+        if (charset.toLowerCase().startsWith("charset=")) {
+            charset = charset.substring("charset=".length());
+        }
+
         return new ContentType(contentType, charset);
     }
 
+    /** Best effort method for turning the provided charset string into a Java charset method,
+     * with some guesswork-heuristics for when it doesn't work
+     */
+    public Charset asCharset() {
+        try {
+            if (Charset.isSupported(charset)) {
+                return Charset.forName(charset);
+            } else if (charset.equalsIgnoreCase("macintosh-latin")) {
+                return StandardCharsets.ISO_8859_1;
+            } else {
+                return StandardCharsets.UTF_8;
+            }
+        }
+        catch (IllegalCharsetNameException ex) { // thrown by Charset.isSupported()
+            return StandardCharsets.UTF_8;
+        }
+    }
+
     public boolean is(String contentType) {
         return this.contentType.equalsIgnoreCase(contentType);
     }

code/processes/crawling-process/ft-content-type/java/nu/marginalia/contenttype/DocumentBodyToString.java

@@ -1,9 +1,12 @@
 package nu.marginalia.contenttype;
 
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.nio.charset.Charset;
-import java.nio.charset.IllegalCharsetNameException;
 import java.nio.charset.StandardCharsets;
-import java.nio.charset.UnsupportedCharsetException;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -23,24 +26,25 @@ public class DocumentBodyToString {
         return new String(data, charset);
     }
 
+    public static Document getParsedData(ContentType type, byte[] data, int maxLength, String url) throws IOException {
+        final Charset charset;
+
+        if (type.charset() == null || type.charset().isBlank()) {
+            charset = StandardCharsets.UTF_8;
+        } else {
+            charset = charsetMap.computeIfAbsent(type, DocumentBodyToString::computeCharset);
+        }
+
+        ByteArrayInputStream bais = new ByteArrayInputStream(data, 0, Math.min(data.length, maxLength));
+
+        return Jsoup.parse(bais, charset.name(), url);
+    }
+
     private static Charset computeCharset(ContentType type) {
-        try {
         if (type.charset() == null || type.charset().isBlank())
             return StandardCharsets.UTF_8;
         else {
-                return Charset.forName(type.charset());
-            }
-        }
-        catch (IllegalCharsetNameException ex) {
-            // Fall back to UTF-8 if we don't understand what this is.  It's *probably* fine? Maybe?
-            return StandardCharsets.UTF_8;
-        }
-        catch (UnsupportedCharsetException ex) {
-            // This is usually like Macintosh Latin
-            // (https://en.wikipedia.org/wiki/Macintosh_Latin_encoding)
-            //
-            // It's close enough to 8859-1 to serve
-            return StandardCharsets.ISO_8859_1;
+            return type.asCharset();
         }
     }
 }

code/processes/crawling-process/java/nu/marginalia/crawl/CrawlerMain.java

@@ -19,22 +19,19 @@ import nu.marginalia.crawl.retreival.DomainProber;
 import nu.marginalia.crawl.warc.WarcArchiverFactory;
 import nu.marginalia.crawl.warc.WarcArchiverIf;
 import nu.marginalia.db.DomainBlacklist;
-import nu.marginalia.io.CrawledDomainReader;
 import nu.marginalia.io.CrawlerOutputFile;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.mq.MessageQueueFactory;
-import nu.marginalia.parquet.crawldata.CrawledDocumentParquetRecordFileWriter;
 import nu.marginalia.process.ProcessConfiguration;
 import nu.marginalia.process.ProcessConfigurationModule;
 import nu.marginalia.process.ProcessMainClass;
 import nu.marginalia.process.control.ProcessHeartbeatImpl;
 import nu.marginalia.process.log.WorkLog;
 import nu.marginalia.service.module.DatabaseModule;
+import nu.marginalia.slop.SlopCrawlDataRecord;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
 import nu.marginalia.util.SimpleBlockingThreadPool;
-import okhttp3.ConnectionPool;
-import okhttp3.Dispatcher;
 import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -44,11 +41,9 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 import java.security.Security;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 
@@ -72,6 +67,8 @@ public class CrawlerMain extends ProcessMainClass {
 
     private final Map<String, CrawlTask> pendingCrawlTasks = new ConcurrentHashMap<>();
 
+    private final LinkedBlockingQueue<CrawlTask> retryQueue = new LinkedBlockingQueue<>();
+
     private final AtomicInteger tasksDone = new AtomicInteger(0);
     private final HttpFetcherImpl fetcher;
 
@@ -85,6 +82,7 @@ public class CrawlerMain extends ProcessMainClass {
 
     @Inject
     public CrawlerMain(UserAgent userAgent,
+                       HttpFetcherImpl httpFetcher,
                        ProcessHeartbeatImpl heartbeat,
                        MessageQueueFactory messageQueueFactory, DomainProber domainProber,
                        FileStorageService fileStorageService,
@@ -98,6 +96,7 @@ public class CrawlerMain extends ProcessMainClass {
         super(messageQueueFactory, processConfiguration, gson, CRAWLER_INBOX);
 
         this.userAgent = userAgent;
+        this.fetcher = httpFetcher;
         this.heartbeat = heartbeat;
         this.domainProber = domainProber;
         this.fileStorageService = fileStorageService;
@@ -107,14 +106,19 @@ public class CrawlerMain extends ProcessMainClass {
         this.blacklist = blacklist;
         this.node = processConfiguration.node();
 
+        SimpleBlockingThreadPool.ThreadType threadType;
+        if (Boolean.getBoolean("crawler.useVirtualThreads")) {
+            threadType = SimpleBlockingThreadPool.ThreadType.VIRTUAL;
+        }
+        else {
+            threadType = SimpleBlockingThreadPool.ThreadType.PLATFORM;
+        }
+
         pool = new SimpleBlockingThreadPool("CrawlerPool",
                 Integer.getInteger("crawler.poolSize", 256),
-                1);
+                1,
+                threadType);
 
-        fetcher = new HttpFetcherImpl(userAgent,
-                new Dispatcher(),
-                new ConnectionPool(5, 10, TimeUnit.SECONDS)
-        );
 
         // Wait for the blacklist to be loaded before starting the crawl
         blacklist.waitUntilLoaded();
@@ -132,6 +136,10 @@ public class CrawlerMain extends ProcessMainClass {
         System.setProperty("sun.net.client.defaultConnectTimeout", "30000");
         System.setProperty("sun.net.client.defaultReadTimeout", "30000");
 
+        // Set the maximum number of connections to keep alive in the connection pool
+        System.setProperty("jdk.httpclient.idleTimeout", "15"); // 15 seconds
+        System.setProperty("jdk.httpclient.connectionPoolSize", "256");
+
         // We don't want to use too much memory caching sessions for https
         System.setProperty("javax.net.ssl.sessionCacheSize", "2048");
 
@@ -225,10 +233,7 @@ public class CrawlerMain extends ProcessMainClass {
 
         logger.info("Loaded {} domains", crawlSpecRecords.size());
 
-        // Shuffle the domains to ensure we get a good mix of domains in each crawl,
-        // so that e.g. the big domains don't get all crawled at once, or we end up
-        // crawling the same server in parallel from different subdomains...
-        Collections.shuffle(crawlSpecRecords);
+        crawlSpecRecords.sort(crawlSpecArrangement(crawlSpecRecords));
 
         // First a validation run to ensure the file is all good to parse
         if (crawlSpecRecords.isEmpty()) {
@@ -249,9 +254,14 @@ public class CrawlerMain extends ProcessMainClass {
             // (this happens when the process is restarted after a crash or a shutdown)
             tasksDone.set(workLog.countFinishedJobs());
 
-            // Create crawl tasks and submit them to the pool for execution
+            // List of deferred tasks used to ensure beneficial scheduling of domains with regard to DomainLocks,
+            // merely shuffling the domains tends to lead to a lot of threads being blocked waiting for a semphore,
+            // this will more aggressively attempt to schedule the jobs to avoid blocking
+            List<CrawlTask> taskList = new ArrayList<>();
+
+            // Create crawl tasks
             for (CrawlSpecRecord crawlSpec : crawlSpecRecords) {
-                if (workLog.isJobFinished(crawlSpec.domain()))
+                if (workLog.isJobFinished(crawlSpec.domain))
                     continue;
 
                 var task = new CrawlTask(
@@ -262,8 +272,36 @@ public class CrawlerMain extends ProcessMainClass {
                         domainStateDb,
                         workLog);
 
-                if (pendingCrawlTasks.putIfAbsent(crawlSpec.domain(), task) == null) {
-                    pool.submitQuietly(task);
+                // Try to run immediately, to avoid unnecessarily keeping the entire work set in RAM
+                if (!trySubmitDeferredTask(task)) {
+                    // Otherwise add to the taskList for deferred execution
+                    taskList.add(task);
+                }
+            }
+
+             // Schedule viable tasks for execution until list is empty
+            for (int emptyRuns = 0;emptyRuns < 300;) {
+                boolean hasTasks = !taskList.isEmpty();
+
+                // The order of these checks  very important to avoid a race condition
+                // where we miss a task that is put into the retry queue
+                boolean hasRunningTasks = pool.getActiveCount() > 0;
+                boolean hasRetryTasks = !retryQueue.isEmpty();
+
+                if (hasTasks || hasRetryTasks || hasRunningTasks) {
+                    retryQueue.drainTo(taskList);
+
+                    // Try to submit any tasks that are in the retry queue (this will block if the pool is full)
+                    taskList.removeIf(this::trySubmitDeferredTask);
+
+                    // Add a small pause here to avoid busy looping toward the end of the execution cycle when
+                    // we might have no new viable tasks to run for hours on end
+                    TimeUnit.MILLISECONDS.sleep(5);
+                } else {
+                    // We have no tasks to run, and no tasks in the retry queue
+                    // but we wait a bit to see if any new tasks come in via the retry queue
+                    emptyRuns++;
+                    TimeUnit.SECONDS.sleep(1);
                 }
             }
 
@@ -291,6 +329,51 @@ public class CrawlerMain extends ProcessMainClass {
         }
     }
 
+    /** Create a comparator that sorts the crawl specs in a way that is beneficial for the crawl,
+     * we want to enqueue domains that have common top domains first, but otherwise have a random
+     * order.
+     * <p></p>
+     * Note, we can't use hash codes for randomization as it is not desirable to have the same order
+     * every time the process is restarted (and CrawlSpecRecord is a record, which defines equals and
+     * hashcode based on the fields).
+     * */
+    private Comparator<CrawlSpecRecord> crawlSpecArrangement(List<CrawlSpecRecord> records) {
+        Random r = new Random();
+        Map<String, Integer> topDomainCounts = new HashMap<>(4 + (int) Math.sqrt(records.size()));
+        Map<String, Integer> randomOrder = new HashMap<>(records.size());
+
+        for (var spec : records) {
+            topDomainCounts.merge(EdgeDomain.getTopDomain(spec.domain), 1, Integer::sum);
+            randomOrder.put(spec.domain, r.nextInt());
+        }
+
+        return Comparator.comparing((CrawlSpecRecord spec) -> topDomainCounts.getOrDefault(EdgeDomain.getTopDomain(spec.domain), 0) >= 8)
+                .reversed()
+                .thenComparing(spec -> randomOrder.get(spec.domain))
+                .thenComparing(Record::hashCode); // non-deterministic tie-breaker to
+    }
+
+    /** Submit a task for execution if it can be run, returns true if it was submitted
+     * or if it can be discarded */
+    private boolean trySubmitDeferredTask(CrawlTask task) {
+        if (!task.canRun()) {
+            return false;
+        }
+
+        if (pendingCrawlTasks.putIfAbsent(task.domain, task) != null) {
+            return true; // task has already run, duplicate in crawl specs
+        }
+
+        try {
+            // This blocks the caller when the pool is full
+            pool.submitQuietly(task);
+            return true;
+        }
+        catch (RuntimeException ex) {
+            logger.error("Failed to submit task " + task.domain, ex);
+            return false;
+        }
+    }
 
     public void runForSingleDomain(String targetDomainName, FileStorageId fileStorageId) throws Exception {
         runForSingleDomain(targetDomainName, fileStorageService.getStorage(fileStorageId).asPath());
@@ -348,12 +431,42 @@ public class CrawlerMain extends ProcessMainClass {
             this.id = Integer.toHexString(domain.hashCode());
         }
 
+        /** Best effort indicator whether we could start this now without getting stuck in
+         * DomainLocks purgatory */
+        public boolean canRun() {
+            return domainLocks.isLockableHint(new EdgeDomain(domain));
+        }
+
         @Override
         public void run() throws Exception {
 
+            if (workLog.isJobFinished(domain)) { // No-Op
+                logger.info("Omitting task {}, as it is already run", domain);
+                return;
+            }
+
+            Optional<DomainLocks.DomainLock> lock = domainLocks.tryLockDomain(new EdgeDomain(domain));
+            // We don't have a lock, so we can't run this task
+            // we return to avoid blocking the pool for too long
+            if (lock.isEmpty()) {
+                if (retryQueue.remainingCapacity() > 0) {
+                    // Sleep a moment to avoid busy looping via the retry queue
+                    // in the case when few tasks remain and almost all are ineligible for
+                    // immediate restart
+                    Thread.sleep(5);
+                }
+
+                retryQueue.put(this);
+                return;
+            }
+            DomainLocks.DomainLock domainLock = lock.get();
+
+            try (domainLock) {
+                Thread.currentThread().setName("crawling:" + domain);
+
                 Path newWarcFile = CrawlerOutputFile.createWarcPath(outputDir, id, domain, CrawlerOutputFile.WarcFileVersion.LIVE);
                 Path tempFile = CrawlerOutputFile.createWarcPath(outputDir, id, domain, CrawlerOutputFile.WarcFileVersion.TEMP);
-            Path parquetFile = CrawlerOutputFile.createParquetPath(outputDir, id, domain);
+                Path slopFile = CrawlerOutputFile.createSlopPath(outputDir, id, domain);
 
                 // Move the WARC file to a temp file if it exists, so we can resume the crawl using the old data
                 // while writing to the same file name as before
@@ -366,8 +479,7 @@ public class CrawlerMain extends ProcessMainClass {
 
                 try (var warcRecorder = new WarcRecorder(newWarcFile); // write to a temp file for now
                      var retriever = new CrawlerRetreiver(fetcher, domainProber, specification, domainStateDb, warcRecorder);
-                 CrawlDataReference reference = getReference();
-                 )
+                     CrawlDataReference reference = getReference())
                 {
                     // Resume the crawl if it was aborted
                     if (Files.exists(tempFile)) {
@@ -377,25 +489,22 @@ public class CrawlerMain extends ProcessMainClass {
 
                     DomainLinks domainLinks = anchorTagsSource.getAnchorTags(domain);
 
-                int size;
-                try (var lock = domainLocks.lockDomain(new EdgeDomain(domain))) {
-                    size = retriever.crawlDomain(domainLinks, reference);
-                }
+                    int size = retriever.crawlDomain(domainLinks, reference);
 
                     // Delete the reference crawl data if it's not the same as the new one
                     // (mostly a case when migrating from legacy->warc)
                     reference.delete();
 
-                // Convert the WARC file to Parquet
-                CrawledDocumentParquetRecordFileWriter
-                        .convertWarc(domain, userAgent, newWarcFile, parquetFile);
+                    // Convert the WARC file to Slop
+                    SlopCrawlDataRecord
+                            .convertWarc(domain, userAgent, newWarcFile, slopFile);
 
                     // Optionally archive the WARC file if full retention is enabled,
                     // otherwise delete it:
                     warcArchiver.consumeWarc(newWarcFile, domain);
 
                     // Mark the domain as finished in the work log
-                workLog.setJobToFinished(domain, parquetFile.toString(), size);
+                    workLog.setJobToFinished(domain, slopFile.toString(), size);
 
                     // Update the progress bar
                     heartbeat.setProgress(tasksDone.incrementAndGet() / (double) totalTasks);
@@ -413,14 +522,26 @@ public class CrawlerMain extends ProcessMainClass {
                     Files.deleteIfExists(tempFile);
                 }
             }
+        }
 
         private CrawlDataReference getReference() {
             try {
-                return new CrawlDataReference(CrawledDomainReader.createDataStream(outputDir, domain, id));
-            } catch (IOException e) {
-                logger.debug("Failed to read previous crawl data for {}", specification.domain());
-                return new CrawlDataReference();
+                Path slopPath = CrawlerOutputFile.getSlopPath(outputDir, id, domain);
+                if (Files.exists(slopPath)) {
+                    return new CrawlDataReference(slopPath);
                 }
+
+                Path parquetPath = CrawlerOutputFile.getParquetPath(outputDir, id, domain);
+                if (Files.exists(parquetPath)) {
+                    slopPath = migrateParquetData(parquetPath, domain, outputDir);
+                    return new CrawlDataReference(slopPath);
+                }
+
+            } catch (Exception e) {
+                logger.debug("Failed to read previous crawl data for {}", specification.domain());
+            }
+
+            return new CrawlDataReference();
         }
 
     }
@@ -480,4 +601,20 @@ public class CrawlerMain extends ProcessMainClass {
             }
         }
     }
+
+    // Migrate from parquet to slop if necessary
+    //
+    // This must be synchronized as chewing through parquet files in parallel leads to enormous memory overhead
+    private synchronized Path migrateParquetData(Path inputPath, String domain, Path crawlDataRoot) throws IOException {
+        if (!inputPath.toString().endsWith(".parquet")) {
+            return inputPath;
+        }
+
+        Path outputFile = CrawlerOutputFile.createSlopPath(crawlDataRoot, Integer.toHexString(domain.hashCode()), domain);
+
+        SlopCrawlDataRecord.convertFromParquet(inputPath, outputFile);
+
+        return outputFile;
+    }
+
 }

code/processes/crawling-process/java/nu/marginalia/crawl/DomainStateDb.java

@@ -1,5 +1,8 @@
 package nu.marginalia.crawl;
 
+import com.google.inject.Inject;
+import nu.marginalia.storage.FileStorageService;
+import nu.marginalia.storage.model.FileStorageType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -8,7 +11,9 @@ import java.nio.file.Path;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.SQLException;
+import java.time.Duration;
 import java.time.Instant;
+import java.util.Objects;
 import java.util.Optional;
 
 /** Supplemental sqlite database for storing the summary of a crawl.
@@ -20,6 +25,17 @@ public class DomainStateDb implements AutoCloseable {
 
     private final Connection connection;
 
+
+    public record CrawlMeta(
+            String domainName,
+            Instant lastFullCrawl,
+            Duration recrawlTime,
+            Duration crawlTime,
+            int recrawlErrors,
+            int crawlChanges,
+            int totalCrawlSize
+    ) {}
+
     public record SummaryRecord(
             String domainName,
             Instant lastUpdated,
@@ -60,7 +76,31 @@ public class DomainStateDb implements AutoCloseable {
 
     }
 
-    public DomainStateDb(Path filename) throws SQLException {
+    public record FaviconRecord(String contentType, byte[] imageData) {}
+
+    @Inject
+    public DomainStateDb(FileStorageService fileStorageService) throws SQLException {
+        this(findFilename(fileStorageService));
+    }
+
+    private static Path findFilename(FileStorageService fileStorageService) throws SQLException {
+        var fsId = fileStorageService.getOnlyActiveFileStorage(FileStorageType.CRAWL_DATA);
+
+        if (fsId.isPresent()) {
+            var fs = fileStorageService.getStorage(fsId.get());
+            return fs.asPath().resolve("domainstate.db");
+        }
+        else {
+            return null;
+        }
+    }
+
+    public DomainStateDb(@Nullable Path filename) throws SQLException {
+        if (null == filename) {
+            connection = null;
+            return;
+        }
+
         String sqliteDbString = "jdbc:sqlite:" + filename.toString();
         connection = DriverManager.getConnection(sqliteDbString);
 
@@ -74,18 +114,102 @@ public class DomainStateDb implements AutoCloseable {
                         feedUrl TEXT
                     )
                     """);
-
+            stmt.executeUpdate("""
+                    CREATE TABLE IF NOT EXISTS crawl_meta (
+                        domain TEXT PRIMARY KEY,
+                        lastFullCrawlEpochMs LONG NOT NULL,
+                        recrawlTimeMs LONG NOT NULL,
+                        recrawlErrors INTEGER NOT NULL,
+                        crawlTimeMs LONG NOT NULL,
+                        crawlChanges INTEGER NOT NULL,
+                        totalCrawlSize INTEGER NOT NULL
+                    )
+                    """);
+            stmt.executeUpdate("""
+                    CREATE TABLE IF NOT EXISTS favicon (
+                        domain TEXT PRIMARY KEY,
+                        contentType TEXT NOT NULL,
+                        icon BLOB NOT NULL
+                    )
+                    """);
             stmt.execute("PRAGMA journal_mode=WAL");
         }
     }
 
     @Override
     public void close() throws SQLException {
+        if (connection != null) {
             connection.close();
         }
+    }
 
+    public boolean isAvailable() {
+        return connection != null;
+    }
+
+    public void saveIcon(String domain, FaviconRecord faviconRecord) {
+        if (connection == null) throw new IllegalStateException("No connection to domainstate db");
+
+        try (var stmt = connection.prepareStatement("""
+                INSERT OR REPLACE INTO favicon (domain, contentType, icon)
+                       VALUES(?, ?, ?)
+            """)) {
+            stmt.setString(1, domain);
+            stmt.setString(2, Objects.requireNonNullElse(faviconRecord.contentType, "application/octet-stream"));
+            stmt.setBytes(3, faviconRecord.imageData);
+            stmt.executeUpdate();
+        }
+        catch (SQLException ex) {
+            logger.error("Failed to insert favicon", ex);
+        }
+    }
+
+    public Optional<FaviconRecord> getIcon(String domain) {
+        if (connection == null)
+            return Optional.empty();
+
+        try (var stmt = connection.prepareStatement("SELECT contentType, icon FROM favicon WHERE DOMAIN = ?")) {
+            stmt.setString(1, domain);
+            var rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                return Optional.of(
+                    new FaviconRecord(
+                        rs.getString("contentType"),
+                        rs.getBytes("icon")
+                    )
+                );
+            }
+        } catch (SQLException e) {
+            logger.error("Failed to retrieve favicon", e);
+        }
+
+        return Optional.empty();
+    }
+
+    public void save(CrawlMeta crawlMeta) {
+        if (connection == null) throw new IllegalStateException("No connection to domainstate db");
+
+        try (var stmt = connection.prepareStatement("""
+                INSERT OR REPLACE INTO crawl_meta (domain, lastFullCrawlEpochMs, recrawlTimeMs, recrawlErrors, crawlTimeMs, crawlChanges, totalCrawlSize)
+                VALUES (?, ?, ?, ?, ?, ?, ?)
+                """)) {
+            stmt.setString(1, crawlMeta.domainName());
+            stmt.setLong(2, crawlMeta.lastFullCrawl.toEpochMilli());
+            stmt.setLong(3, crawlMeta.recrawlTime.toMillis());
+            stmt.setInt(4, crawlMeta.recrawlErrors);
+            stmt.setLong(5, crawlMeta.crawlTime.toMillis());
+            stmt.setInt(6, crawlMeta.crawlChanges);
+            stmt.setInt(7, crawlMeta.totalCrawlSize);
+            stmt.executeUpdate();
+        } catch (SQLException e) {
+            logger.error("Failed to insert crawl meta record", e);
+        }
+    }
 
     public void save(SummaryRecord record) {
+        if (connection == null) throw new IllegalStateException("No connection to domainstate db");
+
         try (var stmt = connection.prepareStatement("""
                 INSERT OR REPLACE INTO summary (domain, lastUpdatedEpochMs, state, stateDesc, feedUrl)
                 VALUES (?, ?, ?, ?, ?)
@@ -101,7 +225,38 @@ public class DomainStateDb implements AutoCloseable {
         }
     }
 
-    public Optional<SummaryRecord> get(String domainName) {
+    public Optional<CrawlMeta> getMeta(String domainName) {
+        if (connection == null)
+            return Optional.empty();
+
+        try (var stmt = connection.prepareStatement("""
+                SELECT domain, lastFullCrawlEpochMs, recrawlTimeMs, recrawlErrors, crawlTimeMs, crawlChanges, totalCrawlSize
+                FROM crawl_meta
+                WHERE domain = ?
+                """)) {
+            stmt.setString(1, domainName);
+            var rs = stmt.executeQuery();
+            if (rs.next()) {
+                return Optional.of(new CrawlMeta(
+                        rs.getString("domain"),
+                        Instant.ofEpochMilli(rs.getLong("lastFullCrawlEpochMs")),
+                        Duration.ofMillis(rs.getLong("recrawlTimeMs")),
+                        Duration.ofMillis(rs.getLong("crawlTimeMs")),
+                        rs.getInt("recrawlErrors"),
+                        rs.getInt("crawlChanges"),
+                        rs.getInt("totalCrawlSize")
+                ));
+            }
+        } catch (SQLException ex) {
+            logger.error("Failed to get crawl meta record", ex);
+        }
+        return Optional.empty();
+    }
+
+    public Optional<SummaryRecord> getSummary(String domainName) {
+        if (connection == null)
+            return Optional.empty();
+
         try (var stmt = connection.prepareStatement("""
                 SELECT domain, lastUpdatedEpochMs, state, stateDesc, feedUrl
                 FROM summary

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/ContentTags.java

@@ -1,6 +1,6 @@
 package nu.marginalia.crawl.fetcher;
 
-import okhttp3.Request;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
 
 /** Encapsulates request modifiers; the ETag and Last-Modified tags for a resource */
 public record ContentTags(String etag, String lastMod) {
@@ -17,14 +17,14 @@ public record ContentTags(String etag, String lastMod) {
     }
 
     /** Paints the tags onto the request builder. */
-    public void paint(Request.Builder getBuilder) {
+    public void paint(HttpGet request) {
 
         if (etag != null) {
-            getBuilder.addHeader("If-None-Match", etag);
+            request.addHeader("If-None-Match", etag);
         }
 
         if (lastMod != null) {
-            getBuilder.addHeader("If-Modified-Since", lastMod);
+            request.addHeader("If-Modified-Since", lastMod);
         }
     }
 }

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/Cookies.java

@@ -1,43 +0,0 @@
-package nu.marginalia.crawl.fetcher;
-
-import okhttp3.Cookie;
-import okhttp3.CookieJar;
-import okhttp3.HttpUrl;
-
-import java.util.Collections;
-import java.util.List;
-import java.util.concurrent.ConcurrentHashMap;
-
-public class Cookies {
-    final ThreadLocal<ConcurrentHashMap<String, List<Cookie>>> cookieJar = ThreadLocal.withInitial(ConcurrentHashMap::new);
-
-    public CookieJar getJar() {
-        return new CookieJar() {
-
-            @Override
-            public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
-
-                if (!cookies.isEmpty()) {
-                    cookieJar.get().put(url.host(), cookies);
-                }
-            }
-
-            @Override
-            public List<Cookie> loadForRequest(HttpUrl url) {
-                return cookieJar.get().getOrDefault(url.host(), Collections.emptyList());
-            }
-        };
-    }
-
-    public void clear() {
-        cookieJar.get().clear();
-    }
-
-    public boolean hasCookies() {
-        return !cookieJar.get().isEmpty();
-    }
-
-    public List<String> getCookies() {
-        return cookieJar.get().values().stream().flatMap(List::stream).map(Cookie::toString).toList();
-    }
-}

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/DomainCookies.java

@@ -0,0 +1,56 @@
+package nu.marginalia.crawl.fetcher;
+
+import org.apache.hc.client5.http.classic.methods.HttpUriRequestBase;
+import org.apache.hc.core5.http.ClassicHttpRequest;
+import org.apache.hc.core5.http.HttpResponse;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.StringJoiner;
+
+public class DomainCookies {
+    private final Map<String, String> cookies = new HashMap<>();
+
+    public boolean hasCookies() {
+        return !cookies.isEmpty();
+    }
+
+    public void updateCookieStore(HttpResponse response) {
+        for (var header : response.getHeaders()) {
+            if (header.getName().equalsIgnoreCase("Set-Cookie")) {
+                parseCookieHeader(header.getValue());
+            }
+        }
+    }
+
+    private void parseCookieHeader(String value) {
+        // Parse the Set-Cookie header value and extract the cookies
+
+        String[] parts = value.split(";");
+        String cookie = parts[0].trim();
+
+        if (cookie.contains("=")) {
+            String[] cookieParts = cookie.split("=");
+            String name = cookieParts[0].trim();
+            String val = cookieParts[1].trim();
+            cookies.put(name, val);
+        }
+    }
+
+    public void paintRequest(HttpUriRequestBase request) {
+        request.addHeader("Cookie", createCookieHeader());
+    }
+
+    public void paintRequest(ClassicHttpRequest request) {
+        request.addHeader("Cookie", createCookieHeader());
+    }
+
+    private String createCookieHeader() {
+        StringJoiner sj = new StringJoiner("; ");
+        for (var cookie : cookies.entrySet()) {
+            sj.add(cookie.getKey() + "=" + cookie.getValue());
+        }
+        return sj.toString();
+    }
+
+}

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/HttpFetcher.java

@@ -3,31 +3,32 @@ package nu.marginalia.crawl.fetcher;
 import com.google.inject.ImplementedBy;
 import crawlercommons.robots.SimpleRobotRules;
 import nu.marginalia.crawl.fetcher.warc.WarcRecorder;
+import nu.marginalia.crawl.retreival.CrawlDelayTimer;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.body.HttpFetchResult;
 import nu.marginalia.model.crawldata.CrawlerDomainStatus;
+import org.apache.hc.client5.http.cookie.CookieStore;
 
 import java.util.List;
 
 @ImplementedBy(HttpFetcherImpl.class)
-public interface HttpFetcher {
+public interface HttpFetcher extends AutoCloseable {
     void setAllowAllContentTypes(boolean allowAllContentTypes);
 
-    List<String> getCookies();
+    CookieStore getCookies();
     void clearCookies();
 
     DomainProbeResult probeDomain(EdgeUrl url);
 
-    ContentTypeProbeResult probeContentType(
-                                EdgeUrl url,
-                                WarcRecorder recorder,
-                                ContentTags tags) throws HttpFetcherImpl.RateLimitException;
-
     HttpFetchResult fetchContent(EdgeUrl url,
                                  WarcRecorder recorder,
+                                 DomainCookies cookies,
+                                 CrawlDelayTimer timer,
                                  ContentTags tags,
-                                 ProbeType probeType) throws HttpFetcherImpl.RateLimitException, Exception;
+                                 ProbeType probeType);
+
+    List<EdgeUrl> fetchSitemapUrls(String rootSitemapUrl, CrawlDelayTimer delayTimer);
 
     SimpleRobotRules fetchRobotRules(EdgeDomain domain, WarcRecorder recorder);
 
@@ -43,6 +44,7 @@ public interface HttpFetcher {
 
         /** This domain redirects to another domain */
         record Redirect(EdgeDomain domain) implements DomainProbeResult {}
+        record RedirectSameDomain_Internal(EdgeUrl domain) implements DomainProbeResult {}
 
         /** If the retrieval of the probed url was successful, return the url as it was fetched
          * (which may be different from the url we probed, if we attempted another URL schema).
@@ -53,7 +55,10 @@ public interface HttpFetcher {
     }
 
     sealed interface ContentTypeProbeResult {
+        record NoOp() implements ContentTypeProbeResult {}
         record Ok(EdgeUrl resolvedUrl) implements ContentTypeProbeResult { }
+        record HttpError(int statusCode, String message) implements ContentTypeProbeResult { }
+        record Redirect(EdgeUrl location) implements ContentTypeProbeResult { }
         record BadContentType(String contentType, int statusCode) implements ContentTypeProbeResult { }
         record Timeout(java.lang.Exception ex) implements ContentTypeProbeResult { }
         record Exception(java.lang.Exception ex) implements ContentTypeProbeResult { }

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/HttpFetcherImpl.java

@@ -1,78 +1,173 @@
 package nu.marginalia.crawl.fetcher;
 
 import com.google.inject.Inject;
+import com.google.inject.Singleton;
 import crawlercommons.robots.SimpleRobotRules;
 import crawlercommons.robots.SimpleRobotRulesParser;
 import nu.marginalia.UserAgent;
-import nu.marginalia.crawl.fetcher.socket.FastTerminatingSocketFactory;
-import nu.marginalia.crawl.fetcher.socket.IpInterceptingNetworkInterceptor;
-import nu.marginalia.crawl.fetcher.socket.NoSecuritySSL;
 import nu.marginalia.crawl.fetcher.warc.WarcRecorder;
+import nu.marginalia.crawl.retreival.CrawlDelayTimer;
+import nu.marginalia.link_parser.LinkParser;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.body.ContentTypeLogic;
 import nu.marginalia.model.body.DocumentBodyExtractor;
 import nu.marginalia.model.body.HttpFetchResult;
 import nu.marginalia.model.crawldata.CrawlerDomainStatus;
-import okhttp3.ConnectionPool;
-import okhttp3.Dispatcher;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
+import org.apache.hc.client5.http.ConnectionKeepAliveStrategy;
+import org.apache.hc.client5.http.HttpRequestRetryStrategy;
+import org.apache.hc.client5.http.classic.HttpClient;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
+import org.apache.hc.client5.http.config.ConnectionConfig;
+import org.apache.hc.client5.http.config.RequestConfig;
+import org.apache.hc.client5.http.cookie.BasicCookieStore;
+import org.apache.hc.client5.http.cookie.CookieStore;
+import org.apache.hc.client5.http.cookie.StandardCookieSpec;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
+import org.apache.hc.client5.http.impl.classic.HttpClients;
+import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager;
+import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
+import org.apache.hc.client5.http.ssl.DefaultClientTlsStrategy;
+import org.apache.hc.core5.http.*;
+import org.apache.hc.core5.http.io.HttpClientResponseHandler;
+import org.apache.hc.core5.http.io.SocketConfig;
+import org.apache.hc.core5.http.io.entity.EntityUtils;
+import org.apache.hc.core5.http.io.support.ClassicRequestBuilder;
+import org.apache.hc.core5.http.message.MessageSupport;
+import org.apache.hc.core5.http.protocol.HttpContext;
+import org.apache.hc.core5.pool.PoolStats;
+import org.apache.hc.core5.util.TimeValue;
+import org.apache.hc.core5.util.Timeout;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.parser.Parser;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
 
-import javax.net.ssl.X509TrustManager;
-import java.io.InterruptedIOException;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLException;
+import java.io.IOException;
+import java.net.SocketTimeoutException;
+import java.net.URISyntaxException;
+import java.security.NoSuchAlgorithmException;
 import java.time.Duration;
-import java.util.List;
-import java.util.Objects;
-import java.util.Optional;
+import java.time.Instant;
+import java.util.*;
+import java.util.concurrent.Semaphore;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 
-public class HttpFetcherImpl implements HttpFetcher {
+@Singleton
+public class HttpFetcherImpl implements HttpFetcher, HttpRequestRetryStrategy {
 
     private final Logger logger = LoggerFactory.getLogger(getClass());
     private final String userAgentString;
     private final String userAgentIdentifier;
-    private final Cookies cookies = new Cookies();
+
+    private final CookieStore cookies = new BasicCookieStore();
 
     private static final SimpleRobotRulesParser robotsParser = new SimpleRobotRulesParser();
     private static final ContentTypeLogic contentTypeLogic = new ContentTypeLogic();
+    private final Marker crawlerAuditMarker = MarkerFactory.getMarker("CRAWLER");
 
+    private final LinkParser linkParser = new LinkParser();
     @Override
     public void setAllowAllContentTypes(boolean allowAllContentTypes) {
         contentTypeLogic.setAllowAllContentTypes(allowAllContentTypes);
     }
 
-    private final OkHttpClient client;
+    private final CloseableHttpClient client;
+    private PoolingHttpClientConnectionManager connectionManager;
 
-    private static final FastTerminatingSocketFactory ftSocketFactory = new FastTerminatingSocketFactory();
-
-    private OkHttpClient createClient(Dispatcher dispatcher, ConnectionPool pool) {
-        var builder = new OkHttpClient.Builder();
-        if (dispatcher != null) {
-            builder.dispatcher(dispatcher);
+    public PoolStats getPoolStats() {
+        return connectionManager.getTotalStats();
     }
 
-        return builder.sslSocketFactory(NoSecuritySSL.buildSocketFactory(), (X509TrustManager) NoSecuritySSL.trustAllCerts[0])
-            .socketFactory(ftSocketFactory)
-            .hostnameVerifier(NoSecuritySSL.buildHostnameVerifyer())
-            .addNetworkInterceptor(new IpInterceptingNetworkInterceptor())
-            .connectionPool(pool)
-            .cookieJar(cookies.getJar())
-            .followRedirects(true)
-            .followSslRedirects(true)
-            .connectTimeout(8, TimeUnit.SECONDS)
-            .readTimeout(10, TimeUnit.SECONDS)
-            .writeTimeout(10, TimeUnit.SECONDS)
+    private CloseableHttpClient createClient() throws NoSuchAlgorithmException {
+        final ConnectionConfig connectionConfig = ConnectionConfig.custom()
+                .setSocketTimeout(10, TimeUnit.SECONDS)
+                .setConnectTimeout(30, TimeUnit.SECONDS)
+                .setValidateAfterInactivity(TimeValue.ofSeconds(5))
                 .build();
 
+        connectionManager = PoolingHttpClientConnectionManagerBuilder.create()
+                .setMaxConnPerRoute(2)
+                .setMaxConnTotal(5000)
+                .setDefaultConnectionConfig(connectionConfig)
+                .setTlsSocketStrategy(new DefaultClientTlsStrategy(SSLContext.getDefault()))
+                .build();
+
+        connectionManager.setDefaultSocketConfig(SocketConfig.custom()
+                .setSoLinger(TimeValue.ofSeconds(-1))
+                .setSoTimeout(Timeout.ofSeconds(10))
+                .build()
+        );
+
+        Thread.ofPlatform().daemon(true).start(() -> {
+            try {
+                for (;;) {
+                    TimeUnit.SECONDS.sleep(15);
+                    logger.info("Connection pool stats: {}", connectionManager.getTotalStats());
+                }
+            }
+            catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+            }
+        });
+
+        final RequestConfig defaultRequestConfig = RequestConfig.custom()
+                .setCookieSpec(StandardCookieSpec.RELAXED)
+                .setResponseTimeout(10, TimeUnit.SECONDS)
+                .setConnectionRequestTimeout(5, TimeUnit.MINUTES)
+                .build();
+
+        return HttpClients.custom()
+                .setDefaultCookieStore(cookies)
+                .setConnectionManager(connectionManager)
+                .setRetryStrategy(this)
+                .setKeepAliveStrategy(new ConnectionKeepAliveStrategy() {
+                    // Default keep-alive duration is 3 minutes, but this is too long for us,
+                    // as we are either going to re-use it fairly quickly or close it for a long time.
+                    //
+                    // So we set it to 30 seconds or clamp the server-provided value to a minimum of 10 seconds.
+                    private static final TimeValue defaultValue = TimeValue.ofSeconds(30);
+
+                    @Override
+                    public TimeValue getKeepAliveDuration(HttpResponse response, HttpContext context) {
+                        final Iterator<HeaderElement> it = MessageSupport.iterate(response, HeaderElements.KEEP_ALIVE);
+
+                        while (it.hasNext()) {
+                            final HeaderElement he = it.next();
+                            final String param = he.getName();
+                            final String value = he.getValue();
+
+                            if (value == null)
+                                continue;
+                            if (!"timeout".equalsIgnoreCase(param))
+                                continue;
+
+                            try {
+                                long timeout = Long.parseLong(value);
+                                timeout = Math.clamp(timeout, 30, defaultValue.toSeconds());
+                                return TimeValue.ofSeconds(timeout);
+                            } catch (final NumberFormatException ignore) {
+                                break;
+                            }
+                        }
+                        return defaultValue;
+                    }
+                })
+                .disableRedirectHandling()
+                .setDefaultRequestConfig(defaultRequestConfig)
+                .build();
     }
 
     @Override
-    public List<String> getCookies() {
-        return cookies.getCookies();
+    public CookieStore getCookies() {
+        return cookies;
     }
 
     @Override
@@ -81,26 +176,32 @@ public class HttpFetcherImpl implements HttpFetcher {
     }
 
     @Inject
-    public HttpFetcherImpl(UserAgent userAgent,
-                           Dispatcher dispatcher,
-                           ConnectionPool connectionPool)
+    public HttpFetcherImpl(UserAgent userAgent)
     {
-        this.client = createClient(dispatcher, connectionPool);
+        try {
+            this.client = createClient();
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e);
+        }
         this.userAgentString = userAgent.uaString();
         this.userAgentIdentifier = userAgent.uaIdentifier();
     }
 
     public HttpFetcherImpl(String userAgent) {
-        this.client = createClient(null, new ConnectionPool());
+        try {
+            this.client = createClient();
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e);
+        }
         this.userAgentString = userAgent;
         this.userAgentIdentifier = userAgent;
     }
 
     // Not necessary in prod, but useful in test
-    public void close() {
-        client.dispatcher().executorService().shutdown();
-        client.connectionPool().evictAll();
+    public void close() throws IOException {
+        client.close();
     }
+
     /**
      * Probe the domain to see if it is reachable, attempting to identify which schema to use,
      * and if there are any redirects.  This is done by one or more HEAD requests.
@@ -110,23 +211,94 @@ public class HttpFetcherImpl implements HttpFetcher {
      */
     @Override
     public DomainProbeResult probeDomain(EdgeUrl url) {
-        var head = new Request.Builder().head().addHeader("User-agent", userAgentString)
-                .url(url.toString())
+        List<EdgeUrl> urls = new ArrayList<>();
+        urls.add(url);
+
+        int redirects = 0;
+        AtomicBoolean tryGet = new AtomicBoolean(false);
+
+        while (!urls.isEmpty() && ++redirects < 5) {
+            ClassicHttpRequest request;
+
+            EdgeUrl topUrl = urls.removeFirst();
+            try {
+                if (tryGet.get()) {
+                    request = ClassicRequestBuilder.get(topUrl.asURI())
+                                .addHeader("User-Agent", userAgentString)
+                                .addHeader("Accept-Encoding", "gzip")
+                                .addHeader("Range", "bytes=0-255")
+                                .build();
+                } else {
+                    request = ClassicRequestBuilder.head(topUrl.asURI())
+                                .addHeader("User-Agent", userAgentString)
+                                .addHeader("Accept-Encoding", "gzip")
                                 .build();
-
-        var call = client.newCall(head);
-
-        try (var rsp = call.execute()) {
-            EdgeUrl requestUrl = new EdgeUrl(rsp.request().url().toString());
-
-            if (!Objects.equals(requestUrl.domain, url.domain)) {
-                return new DomainProbeResult.Redirect(requestUrl.domain);
                 }
-            return new DomainProbeResult.Ok(requestUrl);
+            } catch (URISyntaxException e) {
+                return new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "Invalid URL");
+            }
+
+            try {
+                var result = SendLock.wrapSend(client, request, response -> {
+                    EntityUtils.consume(response.getEntity());
+
+                    return switch (response.getCode()) {
+                        case 200 -> new DomainProbeResult.Ok(url);
+                        case 405 -> {
+                            if (!tryGet.get()) {
+                                tryGet.set(true);
+                                yield new DomainProbeResult.RedirectSameDomain_Internal(url);
+                            }
+                            else {
+                                yield new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "HTTP status 405, tried HEAD and GET?!");
+                            }
+                        }
+                        case 301, 302, 307 -> {
+                            var location = response.getFirstHeader("Location");
+
+                            if (location != null) {
+                                Optional<EdgeUrl> newUrl = linkParser.parseLink(topUrl, location.getValue());
+                                if (newUrl.isEmpty()) {
+                                    yield new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "Invalid location header on redirect");
+                                }
+                                EdgeUrl newEdgeUrl = newUrl.get();
+                                if (newEdgeUrl.domain.equals(topUrl.domain)) {
+                                    yield new DomainProbeResult.RedirectSameDomain_Internal(newEdgeUrl);
+                                }
+                                else {
+                                    yield new DomainProbeResult.Redirect(newEdgeUrl.domain);
+                                }
+                            }
+
+                            yield new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "No location header on redirect");
+
+                        }
+                        default ->
+                                new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "HTTP status " + response.getCode());
+                    };
+                });
+
+                if (result instanceof DomainProbeResult.RedirectSameDomain_Internal(EdgeUrl redirUrl)) {
+                    urls.add(redirUrl);
+                }
+                else {
+                    return result;
+                }
+
+                // We don't have robots.txt yet, so we'll assume a request delay of 1 second
+                TimeUnit.SECONDS.sleep(1);
+            }
+            catch (SocketTimeoutException ex) {
+                return new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "Timeout during domain probe");
             }
             catch (Exception ex) {
-            return new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, ex.getMessage());
+                return new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "Error during domain probe");
             }
+
+        }
+
+        return new DomainProbeResult.Error(CrawlerDomainStatus.ERROR, "Failed to resolve domain root");
+
     }
 
     /** Perform a HEAD request to fetch the content type of a URL.
@@ -137,66 +309,73 @@ public class HttpFetcherImpl implements HttpFetcher {
      * recorded in the WARC file on failure.
      */
     public ContentTypeProbeResult probeContentType(EdgeUrl url,
-                                                   WarcRecorder warcRecorder,
-                                                   ContentTags tags) throws RateLimitException {
-        if (tags.isEmpty() && contentTypeLogic.isUrlLikeBinary(url)) {
-            var headBuilder = new Request.Builder().head()
-                    .addHeader("User-agent", userAgentString)
+                                                   DomainCookies cookies,
+                                                   CrawlDelayTimer timer,
+                                                   ContentTags tags) {
+        if (!tags.isEmpty() || !contentTypeLogic.isUrlLikeBinary(url)) {
+            return new ContentTypeProbeResult.NoOp();
+        }
+
+        try {
+            ClassicHttpRequest head = ClassicRequestBuilder.head(url.asURI())
+                    .addHeader("User-Agent", userAgentString)
                     .addHeader("Accept-Encoding", "gzip")
-                    .url(url.toString());
+                    .build();
 
-            var head = headBuilder.build();
-            var call = client.newCall(head);
+            cookies.paintRequest(head);
 
-            try (var rsp = call.execute()) {
-                var contentTypeHeader = rsp.header("Content-type");
+            return SendLock.wrapSend(client, head, (rsp) -> {
+                cookies.updateCookieStore(rsp);
+                EntityUtils.consume(rsp.getEntity());
+                int statusCode = rsp.getCode();
 
-                if (contentTypeHeader != null && !contentTypeLogic.isAllowableContentType(contentTypeHeader)) {
-                    warcRecorder.flagAsFailedContentTypeProbe(url, contentTypeHeader, rsp.code());
-
-                    return new ContentTypeProbeResult.BadContentType(contentTypeHeader, rsp.code());
+                // Handle redirects
+                if (statusCode == 301 || statusCode == 302 || statusCode == 307) {
+                    var location = rsp.getFirstHeader("Location");
+                    if (location != null) {
+                        Optional<EdgeUrl> newUrl = linkParser.parseLink(url, location.getValue());
+                        if (newUrl.isEmpty())
+                            return new ContentTypeProbeResult.HttpError(statusCode, "Invalid location header on redirect");
+                        return new ContentTypeProbeResult.Redirect(newUrl.get());
+                    }
                 }
 
-                // Update the URL to the final URL of the HEAD request, otherwise we might end up doing
-
-                // HEAD 301 url1 -> url2
-                // HEAD 200 url2
-                // GET 301 url1 -> url2
-                // GET 200 url2
-
-                // which is not what we want. Overall we want to do as few requests as possible to not raise
-                // too many eyebrows when looking at the logs on the target server.  Overall it's probably desirable
-                // that it looks like the traffic makes sense, as opposed to looking like a broken bot.
-
-                var redirectUrl = new EdgeUrl(rsp.request().url().toString());
-                EdgeUrl ret;
-
-                if (Objects.equals(redirectUrl.domain, url.domain)) ret = redirectUrl;
-                else ret = url;
-
-                // Intercept rate limiting
-                if (rsp.code() == 429) {
-                    throw new HttpFetcherImpl.RateLimitException(Objects.requireNonNullElse(rsp.header("Retry-After"), "1"));
+                if (statusCode == 405) {
+                    // If we get a 405, we can't probe the content type with HEAD, so we'll just say it's ok
+                    return new ContentTypeProbeResult.Ok(url);
                 }
 
-                return new ContentTypeProbeResult.Ok(ret);
+                // Handle errors
+                if (statusCode < 200 || statusCode > 300) {
+                    return new ContentTypeProbeResult.HttpError(statusCode, "Bad status code");
                 }
-            catch (RateLimitException ex) {
-                throw ex;
+
+                // Handle missing content type
+                var ctHeader = rsp.getFirstHeader("Content-Type");
+                if (ctHeader == null) {
+                    return new ContentTypeProbeResult.HttpError(statusCode, "Missing Content-Type header");
                 }
-            catch (InterruptedIOException ex) {
-                warcRecorder.flagAsTimeout(url);
+                var contentType = ctHeader.getValue();
+
+                // Check if the content type is allowed
+                if (contentTypeLogic.isAllowableContentType(contentType)) {
+                    return new ContentTypeProbeResult.Ok(url);
+                } else {
+                    return new ContentTypeProbeResult.BadContentType(contentType, statusCode);
+                }
+            });
+        }
+        catch (SocketTimeoutException ex) {
 
             return new ContentTypeProbeResult.Timeout(ex);
-            } catch (Exception ex) {
+        }
+        catch (Exception ex) {
             logger.error("Error during fetching {}[{}]", ex.getClass().getSimpleName(), ex.getMessage());
-
-                warcRecorder.flagAsError(url, ex);
-
             return new ContentTypeProbeResult.Exception(ex);
         }
+        finally {
+            timer.waitFetchDelay();
         }
-        return new ContentTypeProbeResult.Ok(url);
     }
 
     /** Fetch the content of a URL, and record it in a WARC file,
@@ -206,42 +385,219 @@ public class HttpFetcherImpl implements HttpFetcher {
     @Override
     public HttpFetchResult fetchContent(EdgeUrl url,
                                            WarcRecorder warcRecorder,
+                                           DomainCookies cookies,
+                                           CrawlDelayTimer timer,
                                            ContentTags contentTags,
                                            ProbeType probeType)
-        throws Exception
     {
-        var getBuilder = new Request.Builder().get();
+        try {
+            if (probeType == HttpFetcher.ProbeType.FULL) {
+                try {
+                    var probeResult = probeContentType(url, cookies, timer, contentTags);
 
-        getBuilder.url(url.toString())
-                .addHeader("Accept-Encoding", "gzip")
-                .addHeader("Accept-Language", "en,*;q=0.5")
-                .addHeader("Accept", "text/html, application/xhtml+xml, text/*;q=0.8")
-                .addHeader("User-agent", userAgentString);
+                    switch (probeResult) {
+                        case HttpFetcher.ContentTypeProbeResult.NoOp():
+                            break; //
+                        case HttpFetcher.ContentTypeProbeResult.Ok(EdgeUrl resolvedUrl):
+                            logger.info(crawlerAuditMarker, "Probe result OK for {}", url);
+                            url = resolvedUrl; // If we were redirected while probing, use the final URL for fetching
+                            break;
+                        case ContentTypeProbeResult.BadContentType badContentType:
+                            warcRecorder.flagAsFailedContentTypeProbe(url, badContentType.contentType(), badContentType.statusCode());
+                            logger.info(crawlerAuditMarker, "Probe result Bad ContenType ({}) for {}", badContentType.contentType(), url);
+                            return new HttpFetchResult.ResultNone();
+                        case ContentTypeProbeResult.BadContentType.Timeout(Exception ex):
+                            logger.info(crawlerAuditMarker, "Probe result Timeout for {}", url);
+                            warcRecorder.flagAsTimeout(url);
+                            return new HttpFetchResult.ResultException(ex);
+                        case ContentTypeProbeResult.Exception(Exception ex):
+                            logger.info(crawlerAuditMarker, "Probe result Exception({}) for {}", ex.getClass().getSimpleName(), url);
+                            warcRecorder.flagAsError(url, ex);
+                            return new HttpFetchResult.ResultException(ex);
+                        case ContentTypeProbeResult.HttpError httpError:
+                            logger.info(crawlerAuditMarker, "Probe result HTTP Error ({}) for {}", httpError.statusCode(), url);
+                            return new HttpFetchResult.ResultException(new HttpException("HTTP status code " + httpError.statusCode() + ": " + httpError.message()));
+                        case ContentTypeProbeResult.Redirect redirect:
+                            logger.info(crawlerAuditMarker, "Probe result redirect for {} -> {}", url, redirect.location());
+                            return new HttpFetchResult.ResultRedirect(redirect.location());
+                    }
+                } catch (Exception ex) {
+                    logger.warn("Failed to fetch {}", url, ex);
+                    return new HttpFetchResult.ResultException(ex);
+                }
 
-        contentTags.paint(getBuilder);
+            }
 
-        HttpFetchResult result = warcRecorder.fetch(client, getBuilder.build());
+            HttpGet request = new HttpGet(url.asURI());
+            request.addHeader("User-Agent", userAgentString);
+            request.addHeader("Accept-Encoding", "gzip");
+            request.addHeader("Accept-Language", "en,*;q=0.5");
+            request.addHeader("Accept", "text/html, application/xhtml+xml, text/*;q=0.8");
+
+            contentTags.paint(request);
+
+            try (var sl = new SendLock()) {
+                Instant start = Instant.now();
+                HttpFetchResult result = warcRecorder.fetch(client, cookies, request);
+
+                Duration fetchDuration = Duration.between(start, Instant.now());
 
                 if (result instanceof HttpFetchResult.ResultOk ok) {
-            if (ok.statusCode() == 429) {
-                throw new RateLimitException(Objects.requireNonNullElse(ok.header("Retry-After"), "1"));
-            }
                     if (ok.statusCode() == 304) {
-                return new HttpFetchResult.Result304Raw();
+                        result = new HttpFetchResult.Result304Raw();
                     }
-            if (ok.statusCode() == 200) {
-                return ok;
                 }
+
+                switch (result) {
+                    case HttpFetchResult.ResultOk ok -> logger.info(crawlerAuditMarker, "Fetch result OK {} for {} ({} ms)", ok.statusCode(), url, fetchDuration.toMillis());
+                    case HttpFetchResult.ResultRedirect redirect -> logger.info(crawlerAuditMarker, "Fetch result redirect: {}  for {}", redirect.url(), url);
+                    case HttpFetchResult.ResultNone none -> logger.info(crawlerAuditMarker, "Fetch result none for {}", url);
+                    case HttpFetchResult.ResultException ex -> logger.error(crawlerAuditMarker, "Fetch result exception for {}", url, ex.ex());
+                    case HttpFetchResult.Result304Raw raw -> logger.info(crawlerAuditMarker, "Fetch result: 304 Raw for {}", url);
+                    case HttpFetchResult.Result304ReplacedWithReference ref -> logger.info(crawlerAuditMarker, "Fetch result: 304 With reference for {}", url);
                 }
 
                 return result;
             }
+        }
+        catch (Exception ex) {
+            logger.error(crawlerAuditMarker, "Fetch result exception for {}", url, ex);
+
+            return new HttpFetchResult.ResultException(ex);
+        }
+
+    }
 
     @Override
     public SitemapRetriever createSitemapRetriever() {
         return new SitemapRetriever();
     }
 
+    /** Recursively fetch sitemaps */
+    @Override
+    public List<EdgeUrl> fetchSitemapUrls(String root, CrawlDelayTimer delayTimer) {
+        try {
+            List<EdgeUrl> ret = new ArrayList<>();
+
+            Set<String> seenUrls = new HashSet<>();
+            Set<String> seenSitemaps = new HashSet<>();
+
+            Deque<EdgeUrl> sitemapQueue = new LinkedList<>();
+
+            EdgeUrl rootSitemapUrl = new EdgeUrl(root);
+
+            sitemapQueue.add(rootSitemapUrl);
+
+            int fetchedSitemaps = 0;
+
+            while (!sitemapQueue.isEmpty() && ret.size() < 20_000 && ++fetchedSitemaps < 10) {
+                var head = sitemapQueue.removeFirst();
+
+                switch (fetchSingleSitemap(head)) {
+                    case SitemapResult.SitemapUrls(List<String> urls) -> {
+
+                        for (var url : urls) {
+                            if (seenUrls.add(url)) {
+                                EdgeUrl.parse(url)
+                                        .filter(u -> u.domain.equals(rootSitemapUrl.domain))
+                                        .ifPresent(ret::add);
+                            }
+                        }
+
+                    }
+                    case SitemapResult.SitemapReferences(List<String> refs) -> {
+                        for (var ref : refs) {
+                            if (seenSitemaps.add(ref)) {
+                                EdgeUrl.parse(ref)
+                                        .filter(url -> url.domain.equals(rootSitemapUrl.domain))
+                                        .ifPresent(sitemapQueue::addFirst);
+                            }
+                        }
+                    }
+                    case SitemapResult.SitemapError() -> {}
+                }
+
+                delayTimer.waitFetchDelay();
+            }
+
+            return ret;
+        }
+        catch (Exception ex) {
+            logger.error("Error while fetching sitemaps via {}: {} ({})", root, ex.getClass().getSimpleName(), ex.getMessage());
+            return List.of();
+        }
+    }
+
+
+    private SitemapResult fetchSingleSitemap(EdgeUrl sitemapUrl) throws URISyntaxException {
+        HttpGet getRequest = new HttpGet(sitemapUrl.asURI());
+
+        getRequest.addHeader("User-Agent", userAgentString);
+        getRequest.addHeader("Accept-Encoding", "gzip");
+        getRequest.addHeader("Accept", "text/*, */*;q=0.9");
+        getRequest.addHeader("User-Agent", userAgentString);
+
+        try (var sl = new SendLock()) {
+            return client.execute(getRequest, response -> {
+                try {
+                    if (response.getCode() != 200) {
+                        return new SitemapResult.SitemapError();
+                    }
+
+                    Document parsedSitemap = Jsoup.parse(
+                            EntityUtils.toString(response.getEntity()),
+                            sitemapUrl.toString(),
+                            Parser.xmlParser()
+                    );
+
+                    if (parsedSitemap.childrenSize() == 0) {
+                        return new SitemapResult.SitemapError();
+                    }
+
+                    String rootTagName = parsedSitemap.child(0).tagName();
+
+                    return switch (rootTagName.toLowerCase()) {
+                        case "sitemapindex" -> {
+                            List<String> references = new ArrayList<>();
+                            for (var locTag : parsedSitemap.getElementsByTag("loc")) {
+                                references.add(locTag.text().trim());
+                            }
+                            yield new SitemapResult.SitemapReferences(Collections.unmodifiableList(references));
+                        }
+                        case "urlset" -> {
+                            List<String> urls = new ArrayList<>();
+                            for (var locTag : parsedSitemap.select("url > loc")) {
+                                urls.add(locTag.text().trim());
+                            }
+                            yield new SitemapResult.SitemapUrls(Collections.unmodifiableList(urls));
+                        }
+                        case "rss", "atom" -> {
+                            List<String> urls = new ArrayList<>();
+                            for (var locTag : parsedSitemap.select("link, url")) {
+                                urls.add(locTag.text().trim());
+                            }
+                            yield new SitemapResult.SitemapUrls(Collections.unmodifiableList(urls));
+                        }
+                        default -> new SitemapResult.SitemapError();
+                    };
+                }
+                finally {
+                    EntityUtils.consume(response.getEntity());
+                }
+            });
+        }
+        catch (Exception ex) {
+            logger.warn("Error while fetching sitemap {}: {} ({})", sitemapUrl, ex.getClass().getSimpleName(), ex.getMessage());
+            return new SitemapResult.SitemapError();
+        }
+    }
+
+    private sealed interface SitemapResult {
+        record SitemapUrls(List<String> urls) implements SitemapResult {}
+        record SitemapReferences(List<String> sitemapRefs) implements SitemapResult {}
+        record SitemapError() implements SitemapResult {}
+    }
+
     @Override
     public SimpleRobotRules fetchRobotRules(EdgeDomain domain, WarcRecorder recorder) {
         var ret = fetchAndParseRobotsTxt(new EdgeUrl("https", domain, null, "/robots.txt", null), recorder);
@@ -256,15 +612,14 @@ public class HttpFetcherImpl implements HttpFetcher {
     }
 
     private Optional<SimpleRobotRules> fetchAndParseRobotsTxt(EdgeUrl url, WarcRecorder recorder) {
-        try {
-            var getBuilder = new Request.Builder().get();
+        try (var sl = new SendLock()) {
 
-            getBuilder.url(url.toString())
-                    .addHeader("Accept-Encoding", "gzip")
-                    .addHeader("Accept", "text/*, */*;q=0.9")
-                    .addHeader("User-agent", userAgentString);
+            HttpGet request = new HttpGet(url.asURI());
+            request.addHeader("User-Agent", userAgentString);
+            request.addHeader("Accept-Encoding", "gzip");
+            request.addHeader("Accept", "text/*, */*;q=0.9");
 
-            HttpFetchResult result = recorder.fetch(client, getBuilder.build());
+            HttpFetchResult result = recorder.fetch(client, new DomainCookies(), request);
 
             return DocumentBodyExtractor.asBytes(result).mapOpt((contentType, body) ->
                 robotsParser.parseContent(url.toString(),
@@ -278,6 +633,59 @@ public class HttpFetcherImpl implements HttpFetcher {
         }
     }
 
+    @Override
+    public boolean retryRequest(HttpRequest request, IOException exception, int executionCount, HttpContext context) {
+        if (exception instanceof SocketTimeoutException) { // Timeouts are not recoverable
+            return false;
+        }
+        if (exception instanceof SSLException) { // SSL exceptions are unlikely to be recoverable
+            return false;
+        }
+
+        return executionCount <= 3;
+    }
+
+    @Override
+    public boolean retryRequest(HttpResponse response, int executionCount, HttpContext context) {
+        return switch (response.getCode()) {
+            case 500, 503 -> executionCount <= 2;
+            case 429 -> executionCount <= 3;
+            default -> false;
+        };
+    }
+
+    @Override
+    public TimeValue getRetryInterval(HttpRequest request, IOException exception, int executionCount, HttpContext context) {
+        return TimeValue.ofSeconds(1);
+    }
+
+    @Override
+    public TimeValue getRetryInterval(HttpResponse response, int executionCount, HttpContext context) {
+
+        int statusCode = response.getCode();
+
+        // Give 503 a bit more time
+        if (statusCode == 503) return TimeValue.ofSeconds(5);
+
+        if (statusCode == 429) {
+            // get the Retry-After header
+            String retryAfter = response.getFirstHeader("Retry-After").getValue();
+            if (retryAfter == null) {
+                return TimeValue.ofSeconds(2);
+            }
+
+            try {
+                int retryAfterTime = Integer.parseInt(retryAfter);
+                retryAfterTime = Math.clamp(retryAfterTime, 1, 5);
+
+                return TimeValue.ofSeconds(retryAfterTime);
+            } catch (NumberFormatException e) {
+                logger.warn("Invalid Retry-After header: {}", retryAfter);
+            }
+        }
+
+        return TimeValue.ofSeconds(2);
+    }
 
     public static class RateLimitException extends Exception {
         private final String retryAfter;
@@ -298,5 +706,31 @@ public class HttpFetcherImpl implements HttpFetcher {
             }
         }
     }
+
+}
+
+class SendLock implements AutoCloseable {
+
+    private static final Semaphore maxConcurrentRequests = new Semaphore(Integer.getInteger("crawler.maxConcurrentRequests", 512));
+    boolean closed = false;
+
+    public SendLock() {
+        maxConcurrentRequests.acquireUninterruptibly();
+    }
+
+    public static <T> T wrapSend(HttpClient client, final ClassicHttpRequest request,
+                                               final HttpClientResponseHandler<? extends T> responseHandler) throws IOException {
+        try (var lock = new SendLock()) {
+            return client.execute(request, responseHandler);
+        }
+    }
+
+    @Override
+    public void close() {
+        if (!closed) {
+            maxConcurrentRequests.release();
+            closed = true;
+        }
+    }
 }
 

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/socket/IpInterceptingNetworkInterceptor.java

@@ -1,31 +0,0 @@
-package nu.marginalia.crawl.fetcher.socket;
-
-import okhttp3.Interceptor;
-import okhttp3.Response;
-import org.jetbrains.annotations.NotNull;
-
-import java.io.IOException;
-
-
-/** An interceptor that intercepts network requests and adds the remote IP address as
- * a header in the response.  This is used to pass the remote IP address to the Warc
- * writer, as this information is not available in the response.
- */
-public class IpInterceptingNetworkInterceptor implements Interceptor  {
-    private static final String pseudoHeaderName = "X-Marginalia-Remote-IP";
-
-    @NotNull
-    @Override
-    public Response intercept(@NotNull Interceptor.Chain chain) throws IOException {
-        String IP = chain.connection().socket().getInetAddress().getHostAddress();
-
-        return chain.proceed(chain.request())
-                .newBuilder()
-                .addHeader(pseudoHeaderName, IP)
-                .build();
-    }
-
-    public static String getIpFromResponse(Response response) {
-        return response.header(pseudoHeaderName);
-    }
-}

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/socket/NoSecuritySSL.java

@@ -27,7 +27,7 @@ public class NoSecuritySSL {
             }
     };
 
-    public static SSLSocketFactory buildSocketFactory() {
+    public static SSLContext buildSslContext() {
         try {
             // Install the all-trusting trust manager
             final SSLContext sslContext = SSLContext.getInstance("TLS");
@@ -40,14 +40,11 @@ public class NoSecuritySSL {
             clientSessionContext.setSessionCacheSize(2048);
 
             // Create a ssl socket factory with our all-trusting manager
-            return sslContext.getSocketFactory();
+            return sslContext;
         }
         catch (Exception e) {
             throw new RuntimeException(e);
         }
     }
 
-    public static HostnameVerifier buildHostnameVerifyer() {
-        return (hn, session) -> true;
-    }
 }

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/warc/WarcInputBuffer.java

@@ -1,15 +1,20 @@
 package nu.marginalia.crawl.fetcher.warc;
 
-import okhttp3.Headers;
-import okhttp3.Response;
+import org.apache.commons.io.IOUtils;
 import org.apache.commons.io.input.BOMInputStream;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
+import org.apache.hc.core5.http.ClassicHttpResponse;
+import org.apache.hc.core5.http.Header;
 import org.netpreserve.jwarc.WarcTruncationReason;
 
 import java.io.*;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.util.Objects;
-import java.util.zip.GZIPInputStream;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Arrays;
+
+import static nu.marginalia.crawl.fetcher.warc.ErrorBuffer.suppressContentEncoding;
 
 /** Input buffer for temporary storage of a HTTP response
  *  This may be in-memory or on-disk, at the discretion of
@@ -17,8 +22,9 @@ import java.util.zip.GZIPInputStream;
  * */
 public abstract class WarcInputBuffer implements AutoCloseable {
     protected WarcTruncationReason truncationReason = WarcTruncationReason.NOT_TRUNCATED;
-    protected Headers headers;
-    WarcInputBuffer(Headers headers) {
+    protected Header[] headers;
+
+    WarcInputBuffer(Header[] headers) {
         this.headers = headers;
     }
 
@@ -30,7 +36,7 @@ public abstract class WarcInputBuffer implements AutoCloseable {
 
     public final WarcTruncationReason truncationReason() { return truncationReason; }
 
-    public final Headers headers() { return headers; }
+    public final Header[] headers() { return headers; }
 
     /** Create a buffer for a response.
      *  If the response is small and not compressed, it will be stored in memory.
@@ -38,33 +44,52 @@ public abstract class WarcInputBuffer implements AutoCloseable {
      *  and suppressed from the headers.
      *  If an error occurs, a buffer will be created with no content and an error status.
      */
-    static WarcInputBuffer forResponse(Response rsp) {
-        if (rsp == null)
+    static WarcInputBuffer forResponse(ClassicHttpResponse response,
+                                       HttpGet request,
+                                       Duration timeLimit) throws IOException {
+        if (response == null)
             return new ErrorBuffer();
 
-        try {
-            String contentLengthHeader = Objects.requireNonNullElse(rsp.header("Content-Length"), "-1");
-            int contentLength = Integer.parseInt(contentLengthHeader);
-            String contentEncoding = rsp.header("Content-Encoding");
 
-            if (contentEncoding == null && contentLength > 0 && contentLength < 8192) {
+        var entity = response.getEntity();
+
+        if (null == entity) {
+            return new ErrorBuffer();
+        }
+
+        InputStream is = null;
+        try {
+            is = entity.getContent();
+            long length = entity.getContentLength();
+
+            if (length > 0 && length < 8192) {
                 // If the content is small and not compressed, we can just read it into memory
-                return new MemoryBuffer(rsp, contentLength);
-            }
-            else {
+                return new MemoryBuffer(response.getHeaders(), request, timeLimit, is, (int) length);
+            } else {
                 // Otherwise, we unpack it into a file and read it from there
-                return new FileBuffer(rsp);
+                return new FileBuffer(response.getHeaders(), request, timeLimit, is);
             }
         }
-        catch (Exception ex) {
-            return new ErrorBuffer(rsp);
+        finally {
+            try {
+                is.skip(Long.MAX_VALUE);
             }
+            catch (IOException e) {
+                // Ignore the exception
+            }
+            finally {
+                // Close the input stream
+                IOUtils.closeQuietly(is);
+            }
+        }
+
 
     }
 
     /** Copy an input stream to an output stream, with a maximum size and time limit */
-    protected void copy(InputStream is, OutputStream os) {
-        long startTime = System.currentTimeMillis();
+    protected void copy(InputStream is, HttpGet request, OutputStream os, Duration timeLimit) {
+        Instant start = Instant.now();
+        Instant timeout = start.plus(timeLimit);
         long size = 0;
 
         byte[] buffer = new byte[8192];
@@ -74,23 +99,104 @@ public abstract class WarcInputBuffer implements AutoCloseable {
 
         while (true) {
             try {
+                Duration remaining = Duration.between(Instant.now(), timeout);
+                if (remaining.isNegative()) {
+                    truncationReason = WarcTruncationReason.TIME;
+                    // Abort the request if the time limit is exceeded
+                    // so we don't keep the connection open forever or are forced to consume
+                    // the stream to the end
+
+                    request.abort();
+                    break;
+                }
+
                 int n = is.read(buffer);
+
                 if (n < 0) break;
                 size += n;
-                os.write(buffer, 0, n);
 
-                if (size > WarcRecorder.MAX_SIZE) {
+                // Even if we've exceeded the max length,
+                // we keep consuming the stream up until the end or a timeout,
+                // as closing the stream means resetting the connection, and
+                // that's generally not desirable.
+
+                if (size < WarcRecorder.MAX_SIZE) {
+                    os.write(buffer, 0, n);
+                }
+                else if (truncationReason != WarcTruncationReason.LENGTH) {
                     truncationReason = WarcTruncationReason.LENGTH;
                     break;
                 }
 
-                if (System.currentTimeMillis() - startTime > WarcRecorder.MAX_TIME) {
-                    truncationReason = WarcTruncationReason.TIME;
+            } catch (IOException e) {
+                truncationReason = WarcTruncationReason.UNSPECIFIED;
+            }
+        }
+
+    }
+
+    /** Takes a Content-Range header and checks if it is complete.
+     *  A complete range is one that covers the entire resource.
+     *  For example, "bytes 0-1023/2048" or "bytes 0-1023/*" are complete ranges.
+     *  "bytes 0-1023/2048" is not a complete range.
+     */
+    public boolean isRangeComplete(Header[] headers) {
+        // Find the Content-Range header
+        String contentRangeHeader = null;
+        for (var header : headers) {
+            if ("Content-Range".equalsIgnoreCase(header.getName())) {
+                contentRangeHeader = header.getValue();
                 break;
             }
-            } catch (IOException e) {
-                throw new RuntimeException(e);
         }
+
+        // Return true if header is null or empty
+        if (contentRangeHeader == null || contentRangeHeader.isEmpty()) {
+            return true;
+        }
+
+        try {
+            // Content-Range format: "bytes range-start-range-end/size"
+            // e.g., "bytes 0-1023/2048" or "bytes 0-1023/*"
+
+            // Get the part after "bytes "
+            String[] parts = contentRangeHeader.split(" ", 2);
+            if (parts.length < 2) {
+                return false;
+            }
+
+            // Get the range and size parts (e.g., "0-1023/2048")
+            String rangeAndSize = parts[1];
+            String[] rangeAndSizeParts = rangeAndSize.split("/", 2);
+            if (rangeAndSizeParts.length < 2) {
+                return false;
+            }
+
+            // Get the range (e.g., "0-1023")
+            String range = rangeAndSizeParts[0];
+            String[] rangeParts = range.split("-", 2);
+            if (rangeParts.length < 2) {
+                return false;
+            }
+
+            // Get the size (e.g., "2048" or "*")
+            String size = rangeAndSizeParts[1];
+
+            // If size is "*", we don't know the total size, so return false
+            if ("*".equals(size)) {
+                return false;
+            }
+
+            // Parse as long to handle large files
+            long rangeStart = Long.parseLong(rangeParts[0]);
+            long rangeEnd = Long.parseLong(rangeParts[1]);
+            long totalSize = Long.parseLong(size);
+
+            // Check if the range covers the entire resource
+            return rangeStart == 0 && rangeEnd == totalSize - 1;
+
+        } catch (NumberFormatException | ArrayIndexOutOfBoundsException e) {
+            return false;
         }
     }
 
@@ -99,12 +205,8 @@ public abstract class WarcInputBuffer implements AutoCloseable {
 /** Pseudo-buffer for when we have an error */
 class ErrorBuffer extends WarcInputBuffer {
     public ErrorBuffer() {
-        super(Headers.of());
-        truncationReason = WarcTruncationReason.UNSPECIFIED;
-    }
+        super(new Header[0]);
 
-    public ErrorBuffer(Response rsp) {
-        super(rsp.headers());
         truncationReason = WarcTruncationReason.UNSPECIFIED;
     }
 
@@ -120,17 +222,29 @@ class ErrorBuffer extends WarcInputBuffer {
 
     @Override
     public void close() throws Exception {}
+
+
+    static Header[] suppressContentEncoding(Header[] headers) {
+        return Arrays.stream(headers).filter(header -> !"Content-Encoding".equalsIgnoreCase(header.getName())).toArray(Header[]::new);
+    }
+
 }
 
 /** Buffer for when we have the response in memory */
 class MemoryBuffer extends WarcInputBuffer {
     byte[] data;
-    public MemoryBuffer(Response response, int size) {
-        super(response.headers());
+    public MemoryBuffer(Header[] headers, HttpGet request, Duration timeLimit, InputStream responseStream, int size) {
+        super(suppressContentEncoding(headers));
+
+        if (!isRangeComplete(headers)) {
+            truncationReason = WarcTruncationReason.LENGTH;
+        } else {
+            truncationReason = WarcTruncationReason.NOT_TRUNCATED;
+        }
 
         var outputStream = new ByteArrayOutputStream(size);
 
-        copy(response.body().byteStream(), outputStream);
+        copy(responseStream, request, outputStream, timeLimit);
 
         data = outputStream.toByteArray();
     }
@@ -154,52 +268,24 @@ class MemoryBuffer extends WarcInputBuffer {
 class FileBuffer extends WarcInputBuffer {
     private final Path tempFile;
 
-    public FileBuffer(Response response) throws IOException {
-        super(suppressContentEncoding(response.headers()));
+    public FileBuffer(Header[] headers, HttpGet request, Duration timeLimit, InputStream responseStream) throws IOException {
+        super(suppressContentEncoding(headers));
+
+        if (!isRangeComplete(headers)) {
+            truncationReason = WarcTruncationReason.LENGTH;
+        } else {
+            truncationReason = WarcTruncationReason.NOT_TRUNCATED;
+        }
 
         this.tempFile = Files.createTempFile("rsp", ".html");
 
-        if (response.body() == null) {
-            truncationReason = WarcTruncationReason.DISCONNECT;
-            return;
-        }
-
-        if ("gzip".equals(response.header("Content-Encoding"))) {
         try (var out = Files.newOutputStream(tempFile)) {
-                copy(new GZIPInputStream(response.body().byteStream()), out);
+            copy(responseStream, request, out, timeLimit);
         }
         catch (Exception ex) {
             truncationReason = WarcTruncationReason.UNSPECIFIED;
         }
     }
-        else {
-            try (var out = Files.newOutputStream(tempFile)) {
-                copy(response.body().byteStream(), out);
-            }
-            catch (Exception ex) {
-                truncationReason = WarcTruncationReason.UNSPECIFIED;
-            }
-        }
-    }
-
-    private static Headers suppressContentEncoding(Headers headers) {
-        var builder = new Headers.Builder();
-
-        headers.toMultimap().forEach((k, values) -> {
-            if ("Content-Encoding".equalsIgnoreCase(k)) {
-                return;
-            }
-            if ("Transfer-Encoding".equalsIgnoreCase(k)) {
-                return;
-            }
-            for (var value : values) {
-                builder.add(k, value);
-            }
-        });
-
-        return builder.build();
-    }
-
 
     public InputStream read() throws IOException {
         return Files.newInputStream(tempFile);

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/warc/WarcProtocolReconstructor.java

@@ -1,11 +1,14 @@
 package nu.marginalia.crawl.fetcher.warc;
 
-import okhttp3.Protocol;
-import okhttp3.Response;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.hc.core5.http.ClassicHttpResponse;
+import org.apache.hc.core5.http.Header;
 
 import java.net.URI;
 import java.net.URLEncoder;
+import java.net.http.HttpClient;
+import java.net.http.HttpHeaders;
+import java.net.http.HttpResponse;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
 import java.util.stream.Collectors;
@@ -16,7 +19,7 @@ import java.util.stream.Collectors;
 public class WarcProtocolReconstructor {
 
     static String getHttpRequestString(String method,
-                                       Map<String, List<String>> mainHeaders,
+                                       Header[] mainHeaders,
                                        Map<String, List<String>> extraHeaders,
                                        URI uri) {
         StringBuilder requestStringBuilder = new StringBuilder();
@@ -33,12 +36,13 @@ public class WarcProtocolReconstructor {
 
         Set<String> addedHeaders = new HashSet<>();
 
-        mainHeaders.forEach((k, values) -> {
-            for (var value : values) {
+        for (var header : mainHeaders) {
+            String k = header.getName();
+            String v = header.getValue();
+
             addedHeaders.add(k);
-                requestStringBuilder.append(capitalizeHeader(k)).append(": ").append(value).append("\r\n");
+            requestStringBuilder.append(capitalizeHeader(k)).append(": ").append(v).append("\r\n");
         }
-        });
 
         extraHeaders.forEach((k, values) -> {
             if (!addedHeaders.contains(k)) {
@@ -75,17 +79,23 @@ public class WarcProtocolReconstructor {
         return "HTTP/" + version + " " + statusCode + " " + statusMessage + "\r\n" + headerString + "\r\n\r\n";
     }
 
-    static String getResponseHeader(Response response, long size) {
-        String version = response.protocol() == Protocol.HTTP_1_1 ? "1.1" : "2.0";
+    static String getResponseHeader(HttpResponse<?> response, long size) {
+        String version = response.version() == HttpClient.Version.HTTP_1_1 ? "1.1" : "2.0";
 
-        String statusCode = String.valueOf(response.code());
-        String statusMessage = STATUS_CODE_MAP.getOrDefault(response.code(), "Unknown");
+        String statusCode = String.valueOf(response.statusCode());
+        String statusMessage = STATUS_CODE_MAP.getOrDefault(response.statusCode(), "Unknown");
 
-        String headerString = getHeadersAsString(response, size);
+        String headerString = getHeadersAsString(response.headers(), size);
 
         return "HTTP/" + version + " " + statusCode + " " + statusMessage + "\r\n" + headerString + "\r\n\r\n";
     }
 
+    static String getResponseHeader(ClassicHttpResponse response, long size) {
+        String headerString = getHeadersAsString(response.getHeaders(), size);
+
+        return response.getVersion().format() + " " + response.getCode() + " " + response.getReasonPhrase() + "\r\n" + headerString + "\r\n\r\n";
+    }
+
     private static final Map<Integer, String> STATUS_CODE_MAP = Map.ofEntries(
             Map.entry(200, "OK"),
             Map.entry(201, "Created"),
@@ -148,10 +158,41 @@ public class WarcProtocolReconstructor {
         return joiner.toString();
     }
 
-    static private String getHeadersAsString(Response response, long responseSize) {
+
+
+    static private String getHeadersAsString(Header[] headers, long responseSize) {
         StringJoiner joiner = new StringJoiner("\r\n");
 
-        response.headers().toMultimap().forEach((k, values) -> {
+        for (var header : headers) {
+            String headerCapitalized = capitalizeHeader(header.getName());
+
+            // Omit pseudoheaders injected by the crawler itself
+            if (headerCapitalized.startsWith("X-Marginalia"))
+                continue;
+
+            // Omit Transfer-Encoding and Content-Encoding headers
+            if (headerCapitalized.equals("Transfer-Encoding"))
+                continue;
+            if (headerCapitalized.equals("Content-Encoding"))
+                continue;
+
+            // Since we're transparently decoding gzip, we need to update the Content-Length header
+            // to reflect the actual size of the response body. We'll do this at the end.
+            if (headerCapitalized.equals("Content-Length"))
+                continue;
+
+            joiner.add(headerCapitalized + ": " + header.getValue());
+        }
+
+        joiner.add("Content-Length: " + responseSize);
+
+        return joiner.toString();
+    }
+
+    static private String getHeadersAsString(HttpHeaders headers, long responseSize) {
+        StringJoiner joiner = new StringJoiner("\r\n");
+
+        headers.map().forEach((k, values) -> {
             String headerCapitalized = capitalizeHeader(k);
 
             // Omit pseudoheaders injected by the crawler itself
@@ -179,8 +220,8 @@ public class WarcProtocolReconstructor {
         return joiner.toString();
     }
 
-    // okhttp gives us flattened headers, so we need to reconstruct Camel-Kebab-Case style
-    // for the WARC parser's sake...
+    // okhttp gave us flattened headers, so we need to reconstruct Camel-Kebab-Case style
+    // for the WARC parser's sake...  (do we still need this, mr chesterton?)
     static private String capitalizeHeader(String k) {
         return Arrays.stream(StringUtils.split(k, '-'))
                 .map(StringUtils::capitalize)

code/processes/crawling-process/java/nu/marginalia/crawl/fetcher/warc/WarcRecorder.java

@@ -1,13 +1,16 @@
 package nu.marginalia.crawl.fetcher.warc;
 
 import nu.marginalia.crawl.fetcher.ContentTags;
+import nu.marginalia.crawl.fetcher.DomainCookies;
+import nu.marginalia.crawl.fetcher.HttpFetcher;
 import nu.marginalia.crawl.fetcher.HttpFetcherImpl;
-import nu.marginalia.crawl.fetcher.socket.IpInterceptingNetworkInterceptor;
+import nu.marginalia.link_parser.LinkParser;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.body.HttpFetchResult;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
+import org.apache.hc.client5.http.classic.HttpClient;
+import org.apache.hc.client5.http.classic.methods.HttpGet;
+import org.apache.hc.core5.http.NameValuePair;
 import org.jetbrains.annotations.Nullable;
 import org.netpreserve.jwarc.*;
 import org.slf4j.Logger;
@@ -16,18 +19,20 @@ import org.slf4j.LoggerFactory;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.InetAddress;
+import java.net.SocketTimeoutException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.security.NoSuchAlgorithmException;
+import java.time.Duration;
 import java.time.Instant;
 import java.util.*;
 
 /** Based on JWarc's fetch method, APL 2.0 license
  * <p></p>
- * This class wraps OkHttp's OkHttpClient and records the HTTP request and response in a WARC file,
+ * This class wraps HttpClient and records the HTTP request and response in a WARC file,
  * as best is possible given not all the data is available at the same time and needs to
  * be reconstructed.
  */
@@ -36,7 +41,7 @@ public class WarcRecorder implements AutoCloseable {
     static final int MAX_TIME = 30_000;
 
     /** Maximum (decompressed) size we'll save */
-    static final int MAX_SIZE = Integer.getInteger("crawler.maxFetchSize", 10 * 1024 * 1024);
+    static final int MAX_SIZE = Integer.getInteger("crawler.maxFetchSize", 32 * 1024 * 1024);
 
     private final WarcWriter writer;
     private final Path warcFile;
@@ -47,12 +52,7 @@ public class WarcRecorder implements AutoCloseable {
     // Affix a version string in case we need to change the format in the future
     // in some way
     private final String warcRecorderVersion = "1.0";
-
-    // We need to know if the site uses cookies so this can be reported among the search results
-    // -- flip this to true if we see any cookies.  This information will also be painted on any
-    // revisited pages.  It's not 100% perfect and a bit order dependent, but it's good enough.
-    private final WarcXCookieInformationHeader cookieInformation = new WarcXCookieInformationHeader();
-
+    private final LinkParser linkParser = new LinkParser();
     /**
      * Create a new WarcRecorder that will write to the given file
      *
@@ -74,32 +74,73 @@ public class WarcRecorder implements AutoCloseable {
         temporaryFile = true;
     }
 
-    public HttpFetchResult fetch(OkHttpClient client, Request request) throws NoSuchAlgorithmException,
-            IOException,
-            URISyntaxException,
-            InterruptedException
+    public HttpFetchResult fetch(HttpClient client,
+                                 DomainCookies cookies,
+                                 HttpGet request)
+            throws NoSuchAlgorithmException, IOException, URISyntaxException, InterruptedException
     {
-        URI requestUri = request.url().uri();
+        return fetch(client, cookies, request, Duration.ofMillis(MAX_TIME));
+    }
+
+    public HttpFetchResult fetch(HttpClient client,
+                                 DomainCookies cookies,
+                                 HttpGet request,
+                                 Duration timeout)
+            throws NoSuchAlgorithmException, IOException, URISyntaxException, InterruptedException
+    {
+        URI requestUri = request.getUri();
 
         WarcDigestBuilder responseDigestBuilder = new WarcDigestBuilder();
         WarcDigestBuilder payloadDigestBuilder = new WarcDigestBuilder();
 
-        String ip;
         Instant date = Instant.now();
 
-        var call = client.newCall(request);
+        // Not entirely sure why we need to do this, but keeping it due to Chesterton's Fence
+        Map<String, List<String>> extraHeaders = new HashMap<>(request.getHeaders().length);
 
-        cookieInformation.update(client, request.url());
+        // Inject a range header to attempt to limit the size of the response
+        // to the maximum size we want to store, if the server supports it.
+        request.addHeader("Range", "bytes=0-"+MAX_SIZE);
+        cookies.paintRequest(request);
+        try {
+            return client.execute(request,response -> {
+
+                try (WarcInputBuffer inputBuffer = WarcInputBuffer.forResponse(response, request, timeout);
+                     InputStream inputStream = inputBuffer.read()) {
+
+                    cookies.updateCookieStore(response);
+
+                    // Build and write the request
+
+                    WarcDigestBuilder requestDigestBuilder = new WarcDigestBuilder();
+
+                    byte[] httpRequestString = WarcProtocolReconstructor
+                            .getHttpRequestString(
+                                    request.getMethod(),
+                                    request.getHeaders(),
+                                    extraHeaders,
+                                    requestUri)
+                            .getBytes();
+
+                    requestDigestBuilder.update(httpRequestString);
+
+                    WarcRequest warcRequest = new WarcRequest.Builder(requestUri)
+                            .blockDigest(requestDigestBuilder.build())
+                            .date(date)
+                            .body(MediaType.HTTP_REQUEST, httpRequestString)
+                            .build();
+
+                    warcRequest.http(); // force HTTP header to be parsed before body is consumed so that caller can use it
+                    writer.write(warcRequest);
+
+
+                    if (cookies.hasCookies()) {
+                        response.addHeader("X-Has-Cookies", 1);
+                    }
 
-        try (var response = call.execute();
-             WarcInputBuffer inputBuffer = WarcInputBuffer.forResponse(response))
-        {
                     byte[] responseHeaders = WarcProtocolReconstructor.getResponseHeader(response, inputBuffer.size()).getBytes(StandardCharsets.UTF_8);
 
                     ResponseDataBuffer responseDataBuffer = new ResponseDataBuffer(inputBuffer.size() + responseHeaders.length);
-            InputStream inputStream = inputBuffer.read();
-
-            ip = IpInterceptingNetworkInterceptor.getIpFromResponse(response);
 
                     responseDataBuffer.put(responseHeaders);
                     responseDataBuffer.updateDigest(responseDigestBuilder, 0, responseHeaders.length);
@@ -121,19 +162,19 @@ public class WarcRecorder implements AutoCloseable {
                         responseDataBuffer.updateDigest(payloadDigestBuilder, startPos, n);
                     }
 
-            // It looks like this might be the same as requestUri, but it's not;
-            // it's the URI after resolving redirects.
-            final URI responseUri = response.request().url().uri();
+                    // with some http client libraries, that resolve redirects transparently, this might be different
+                    // from the request URI, but currently we don't have transparent redirect resolution so it's always
+                    // the same (though let's keep the variables separate in case this changes)
+                    final URI responseUri = requestUri;
 
                     WarcResponse.Builder responseBuilder = new WarcResponse.Builder(responseUri)
                             .blockDigest(responseDigestBuilder.build())
                             .date(date)
+                            .concurrentTo(warcRequest.id())
                             .body(MediaType.HTTP_RESPONSE, responseDataBuffer.copyBytes());
 
-            cookieInformation.paint(responseBuilder);
-
-            if (ip != null) responseBuilder.ipAddress(InetAddress.getByName(ip));
-
+                    InetAddress inetAddress = InetAddress.getByName(responseUri.getHost());
+                    responseBuilder.ipAddress(inetAddress);
                     responseBuilder.payloadDigest(payloadDigestBuilder.build());
                     responseBuilder.truncated(inputBuffer.truncationReason());
 
@@ -143,39 +184,63 @@ public class WarcRecorder implements AutoCloseable {
                     warcResponse.http(); // force HTTP header to be parsed before body is consumed so that caller can use it
                     writer.write(warcResponse);
 
-            // Build and write the request
+                    if (Duration.between(date, Instant.now()).compareTo(Duration.ofSeconds(9)) > 0
+                            && inputBuffer.size() < 2048
+                            && !requestUri.getPath().endsWith("robots.txt")) // don't bail on robots.txt
+                    {
+                        // Fast detection and mitigation of crawler traps that respond with slow
+                        // small responses, with a high branching factor
 
-            WarcDigestBuilder requestDigestBuilder = new WarcDigestBuilder();
+                        // Note we bail *after* writing the warc records, this will effectively only
+                        // prevent link extraction from the document.
 
-            byte[] httpRequestString = WarcProtocolReconstructor
-                    .getHttpRequestString(
-                            response.request().method(),
-                            response.request().headers().toMultimap(),
-                            request.headers().toMultimap(),
-                            requestUri)
-                    .getBytes();
+                        logger.warn("URL {} took too long to fetch ({}s) and was too small for the effort ({}b)",
+                                requestUri,
+                                Duration.between(date, Instant.now()).getSeconds(),
+                                inputBuffer.size()
+                        );
 
-            requestDigestBuilder.update(httpRequestString);
+                        return new HttpFetchResult.ResultException(new IOException("Likely crawler trap"));
+                    }
 
-            WarcRequest warcRequest = new WarcRequest.Builder(requestUri)
-                    .blockDigest(requestDigestBuilder.build())
-                    .date(date)
-                    .body(MediaType.HTTP_REQUEST, httpRequestString)
-                    .concurrentTo(warcResponse.id())
-                    .build();
+                    if (response.getCode() == 301 || response.getCode() == 302 || response.getCode() == 307) {
+                        // If the server responds with a redirect, we need to
+                        // update the request URI to the new location
+                        EdgeUrl redirectLocation = Optional.ofNullable(response.getFirstHeader("Location"))
+                                                           .map(NameValuePair::getValue)
+                                .flatMap(location -> linkParser.parseLink(new EdgeUrl(requestUri), location))
+                                .orElse(null);
+                        if (redirectLocation != null) {
+                            // If the redirect location is a valid URL, we need to update the request URI
+                            return new HttpFetchResult.ResultRedirect(redirectLocation);
+                        } else {
+                            // If the redirect location is not a valid URL, we need to throw an exception
+                            return new HttpFetchResult.ResultException(new IOException("Invalid redirect location: " + response.getFirstHeader("Location")));
+                        }
+                    }
 
-            warcRequest.http(); // force HTTP header to be parsed before body is consumed so that caller can use it
-            writer.write(warcRequest);
 
                     return new HttpFetchResult.ResultOk(responseUri,
-                    response.code(),
+                            response.getCode(),
                             inputBuffer.headers(),
-                    ip,
+                            inetAddress.getHostAddress(),
                             responseDataBuffer.data,
                             dataStart,
                             responseDataBuffer.length() - dataStart);
+                } catch (Exception ex) {
+                    flagAsError(new EdgeUrl(requestUri), ex); // write a WARC record to indicate the error
+                    logger.warn("Failed to fetch URL {}:  {}", requestUri, ex.getMessage());
+                    return new HttpFetchResult.ResultException(ex);
                 }
-        catch (Exception ex) {
+            });
+        // the client.execute() method will throw an exception if the request times out
+        // or on other IO exceptions, so we need to catch those here as well as having
+        // exception handling in the response handler
+        } catch (SocketTimeoutException ex) {
+            flagAsTimeout(new EdgeUrl(requestUri)); // write a WARC record to indicate the timeout
+            return new HttpFetchResult.ResultException(ex);
+        } catch (IOException ex) {
+            flagAsError(new EdgeUrl(requestUri), ex); // write a WARC record to indicate the error
             logger.warn("Failed to fetch URL {}:  {}", requestUri, ex.getMessage());
             return new HttpFetchResult.ResultException(ex);
         }
@@ -185,7 +250,7 @@ public class WarcRecorder implements AutoCloseable {
         writer.write(item);
     }
 
-    private void saveOldResponse(EdgeUrl url, String contentType, int statusCode, String documentBody, @Nullable String headers, ContentTags contentTags) {
+    private void saveOldResponse(EdgeUrl url, DomainCookies domainCookies, String contentType, int statusCode, byte[] documentBody, @Nullable String headers, ContentTags contentTags) {
         try {
             WarcDigestBuilder responseDigestBuilder = new WarcDigestBuilder();
             WarcDigestBuilder payloadDigestBuilder = new WarcDigestBuilder();
@@ -195,7 +260,7 @@ public class WarcRecorder implements AutoCloseable {
             if (documentBody == null) {
                 bytes = new byte[0];
             } else {
-                bytes = documentBody.getBytes();
+                bytes = documentBody;
             }
 
             // Create a synthesis of custom headers and the original headers
@@ -246,7 +311,9 @@ public class WarcRecorder implements AutoCloseable {
                     .date(Instant.now())
                     .body(MediaType.HTTP_RESPONSE, responseDataBuffer.copyBytes());
 
-            cookieInformation.paint(builder);
+            if (domainCookies.hasCookies() || (headers != null && headers.contains("Set-Cookie:"))) {
+                builder.addHeader("X-Has-Cookies", "1");
+            }
 
             var reference = builder.build();
 
@@ -264,8 +331,8 @@ public class WarcRecorder implements AutoCloseable {
      * an E-Tag or Last-Modified header, and the server responds with a 304 Not Modified.  In this
      * scenario we want to record the data as it was in the previous crawl, but not re-fetch it.
      */
-    public void writeReferenceCopy(EdgeUrl url, String contentType, int statusCode, String documentBody, @Nullable String headers, ContentTags ctags) {
-        saveOldResponse(url, contentType, statusCode, documentBody, headers, ctags);
+    public void writeReferenceCopy(EdgeUrl url, DomainCookies cookies, String contentType, int statusCode, byte[] documentBody, @Nullable String headers, ContentTags ctags) {
+        saveOldResponse(url, cookies, contentType, statusCode, documentBody, headers, ctags);
     }
 
     public void writeWarcinfoHeader(String ip, EdgeDomain domain, HttpFetcherImpl.DomainProbeResult result) throws IOException {
@@ -285,6 +352,9 @@ public class WarcRecorder implements AutoCloseable {
             case HttpFetcherImpl.DomainProbeResult.Ok ok:
                 fields.put("X-WARC-Probe-Status", List.of("OK"));
                 break;
+            case HttpFetcher.DomainProbeResult.RedirectSameDomain_Internal redirectSameDomain:
+                fields.put("X-WARC-Probe-Status", List.of("REDIR-INTERNAL"));
+                break;
         }
 
         var warcinfo = new Warcinfo.Builder()

code/processes/crawling-process/java/nu/marginalia/crawl/logic/DomainLocks.java

@@ -3,6 +3,7 @@ package nu.marginalia.crawl.logic;
 import nu.marginalia.model.EdgeDomain;
 
 import java.util.Map;
+import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.Semaphore;
 
@@ -19,8 +20,22 @@ public class DomainLocks {
      * and may be held by another thread.  The caller is responsible for locking and  releasing the lock.
      */
     public DomainLock lockDomain(EdgeDomain domain) throws InterruptedException {
-        return new DomainLock(domain.toString(),
-                locks.computeIfAbsent(domain.topDomain.toLowerCase(), this::defaultPermits));
+        var sem = locks.computeIfAbsent(domain.topDomain.toLowerCase(), this::defaultPermits);
+
+        sem.acquire();
+
+        return new DomainLock(sem);
+    }
+
+    public Optional<DomainLock> tryLockDomain(EdgeDomain domain) {
+        var sem = locks.computeIfAbsent(domain.topDomain.toLowerCase(), this::defaultPermits);
+        if (sem.tryAcquire(1)) {
+            return Optional.of(new DomainLock(sem));
+        }
+        else {
+            // We don't have a lock, so we return an empty optional
+            return Optional.empty();
+        }
     }
 
     private Semaphore defaultPermits(String topDomain) {
@@ -28,39 +43,45 @@ public class DomainLocks {
             return new Semaphore(16);
         if (topDomain.equals("blogspot.com"))
             return new Semaphore(8);
-
+        if (topDomain.equals("tumblr.com"))
+            return new Semaphore(8);
         if (topDomain.equals("neocities.org"))
-            return new Semaphore(4);
+            return new Semaphore(8);
         if (topDomain.equals("github.io"))
-            return new Semaphore(4);
+            return new Semaphore(8);
 
+        // Substack really dislikes broad-scale crawlers, so we need to be careful
+        // to not get blocked.
         if (topDomain.equals("substack.com")) {
             return new Semaphore(1);
         }
-        if (topDomain.endsWith(".edu")) {
-            return new Semaphore(1);
-        }
 
         return new Semaphore(2);
     }
 
+    /** Returns true if the domain is lockable, i.e. if it is not already locked by another thread.
+     * (this is just a hint, and does not guarantee that the domain is actually lockable any time
+     * after this method returns true)
+     */
+    public boolean isLockableHint(EdgeDomain domain) {
+        Semaphore sem = locks.get(domain.topDomain.toLowerCase());
+        if (null == sem)
+            return true;
+        else
+            return sem.availablePermits() > 0;
+    }
+
     public static class DomainLock implements AutoCloseable {
-        private final String domainName;
         private final Semaphore semaphore;
 
-        DomainLock(String domainName, Semaphore semaphore) throws InterruptedException {
-            this.domainName = domainName;
+        DomainLock(Semaphore semaphore) {
             this.semaphore = semaphore;
-
-            Thread.currentThread().setName("crawling:" + domainName + " [await domain lock]");
-            semaphore.acquire();
-            Thread.currentThread().setName("crawling:" + domainName);
         }
 
         @Override
         public void close() throws Exception {
             semaphore.release();
-            Thread.currentThread().setName("crawling:" + domainName + " [wrapping up]");
+            Thread.currentThread().setName("[idle]");
         }
     }
 }

code/processes/crawling-process/java/nu/marginalia/crawl/retreival/CrawlDataReference.java

@@ -4,6 +4,7 @@ import nu.marginalia.ContentTypes;
 import nu.marginalia.io.SerializableCrawlDataStream;
 import nu.marginalia.lsh.EasyLSH;
 import nu.marginalia.model.crawldata.CrawledDocument;
+import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -11,54 +12,76 @@ import javax.annotation.Nullable;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.Iterator;
+import java.util.Objects;
+import java.util.Optional;
 
 /** A reference to a domain that has been crawled before. */
-public class CrawlDataReference implements AutoCloseable {
+public class CrawlDataReference implements AutoCloseable, Iterable<CrawledDocument> {
+
+    private boolean closed = false;
+
+    @Nullable
+    private final Path path;
+
+    @Nullable
+    private SerializableCrawlDataStream data = null;
 
-    private final SerializableCrawlDataStream data;
     private static final Logger logger = LoggerFactory.getLogger(CrawlDataReference.class);
 
-    public CrawlDataReference(SerializableCrawlDataStream data) {
-        this.data = data;
+    public CrawlDataReference(@Nullable Path path) {
+        this.path = path;
     }
 
     public CrawlDataReference() {
-        this(SerializableCrawlDataStream.empty());
+        this(null);
     }
 
     /** Delete the associated data from disk, if it exists */
     public void delete() throws IOException {
-        Path filePath = data.path();
-
-        if (filePath != null) {
-            Files.deleteIfExists(filePath);
+        if (path != null) {
+            Files.deleteIfExists(path);
         }
     }
 
-    /** Get the next document from the crawl data,
-     * returning null when there are no more documents
-     * available
-     */
-    @Nullable
-    public CrawledDocument nextDocument() {
+    public @NotNull Iterator<CrawledDocument> iterator() {
+
+        requireStream();
+        // Guaranteed by requireStream, but helps java
+        Objects.requireNonNull(data);
+
+        return data.map(next -> {
+            if (next instanceof CrawledDocument doc && ContentTypes.isAccepted(doc.contentType)) {
+                return Optional.of(doc);
+            }
+            else {
+                return Optional.empty();
+            }
+        });
+    }
+
+    /** After calling this method, data is guaranteed to be non-null */
+    private void requireStream() {
+        if (closed) {
+            throw new IllegalStateException("Use after close()");
+        }
+
+        if (data == null) {
             try {
-            while (data.hasNext()) {
-                if (data.next() instanceof CrawledDocument doc) {
-                    if (!ContentTypes.isAccepted(doc.contentType))
-                        continue;
-
-                    return doc;
+                if (path != null) {
+                    data = SerializableCrawlDataStream.openDataStream(path);
+                    return;
                 }
             }
-        }
-        catch (IOException ex) {
-            logger.error("Failed to read next document", ex);
+            catch (Exception ex) {
+                logger.error("Failed to open stream", ex);
             }
 
-        return null;
+            data = SerializableCrawlDataStream.empty();
+        }
     }
 
-    public static boolean isContentBodySame(String one, String other) {
+    public static boolean isContentBodySame(byte[] one, byte[] other) {
 
         final long contentHashOne = contentHash(one);
         final long contentHashOther = contentHash(other);
@@ -66,7 +89,7 @@ public class CrawlDataReference implements AutoCloseable {
         return EasyLSH.hammingDistance(contentHashOne, contentHashOther) < 4;
     }
 
-    private static long contentHash(String content) {
+    private static long contentHash(byte[] content) {
         EasyLSH hash = new EasyLSH();
         int next = 0;
 
@@ -74,8 +97,8 @@ public class CrawlDataReference implements AutoCloseable {
 
         // In a naive best-effort fashion, extract the text
         // content of the document and feed it into the LSH
-        for (int i = 0; i < content.length(); i++) {
-            char c = content.charAt(i);
+        for (byte b : content) {
+            char c = (char) b;
             if (c == '<') {
                 isInTag = true;
             } else if (c == '>') {
@@ -98,7 +121,12 @@ public class CrawlDataReference implements AutoCloseable {
     }
 
     @Override
-    public void close() throws Exception {
+    public void close() throws IOException {
+        if (!closed) {
+            if (data != null) {
                 data.close();
             }
+            closed = true;
+        }
+    }
 }