(ping) Parameterize thread counts for availability and DNS job consumers

Reduce socket and connection timeouts in HttpClient and adjust thread counts for job consumers

ROADMAP.md

@@ -38,14 +38,6 @@ associated with each language added, at least a models file or two, as well as s
 
 It would be very helpful to find a speaker of a large language other than English to help in the fine tuning.
 
-## Support for binary formats like PDF
-
-The crawler needs to be modified to retain them, and the conversion logic needs to parse them.  
-The documents database probably should have some sort of flag indicating it's a PDF as well.
-
-PDF parsing is known to be a bit of a security liability so some thought needs to be put in
-that direction as well.
-
 ## Custom ranking logic
 
 Stract does an interesting thing where they have configurable search filters.
@@ -66,6 +58,14 @@ One of the search engine's biggest limitations right now is that it does not ind
 
 # Completed
 
+## Support for binary formats like PDF (COMPLETED 2025-05)
+
+The crawler needs to be modified to retain them, and the conversion logic needs to parse them.  
+The documents database probably should have some sort of flag indicating it's a PDF as well.
+
+PDF parsing is known to be a bit of a security liability so some thought needs to be put in
+that direction as well.
+
 ## Web Design Overhaul (COMPLETED 2025-01)
 
 The design is kinda clunky and hard to maintain, and needlessly outdated-looking.  

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

@@ -1,3 +1,8 @@
 package nu.marginalia;
 
+/**
+ * A record representing a User Agent.
+ * @param uaString - the header value of the User Agent
+ * @param uaIdentifier - what we look for in robots.txt
+ */
 public record UserAgent(String uaString, String uaIdentifier) {}

code/common/db/resources/db/migration/V25_01_0_000__nsfw_domains.sql

@@ -0,0 +1,5 @@
+CREATE TABLE IF NOT EXISTS WMSA_prod.NSFW_DOMAINS (
+    ID INT NOT NULL AUTO_INCREMENT,
+    TIER INT NOT NULL,
+    PRIMARY KEY (ID)
+);

code/common/db/resources/db/migration/V25_01_0_001__ping_domains.sql

@@ -0,0 +1,213 @@
+
+-- Create metadata tables for domain ping status and security information
+
+-- These are not ICMP pings, but rather HTTP(S) pings to check the availability and security
+-- of web servers associated with domains, to assess uptime and changes in security configurations
+-- indicating ownership changes or security issues.
+
+-- Note: DOMAIN_ID and NODE_ID are used to identify the domain and the node that performed the ping.
+-- These are strictly speaking foreign keys to the EC_DOMAIN table, but as it
+-- is strictly append-only, we do not need to enforce foreign key constraints.
+
+CREATE TABLE IF NOT EXISTS DOMAIN_AVAILABILITY_INFORMATION (
+    DOMAIN_ID INT NOT NULL PRIMARY KEY,
+    NODE_ID INT NOT NULL,
+
+    SERVER_AVAILABLE BOOLEAN NOT NULL,  -- Indicates if the server is available (true) or not (false)
+    SERVER_IP VARBINARY(16),            -- IP address of the server (IPv4 or IPv6)
+    SERVER_IP_ASN INTEGER,              -- Autonomous System number
+
+    DATA_HASH BIGINT,                   -- Hash of the data for integrity checks
+    SECURITY_CONFIG_HASH BIGINT,        -- Hash of the security configuration for integrity checks
+
+    HTTP_SCHEMA ENUM('HTTP', 'HTTPS'),  -- HTTP or HTTPS protocol used
+    HTTP_ETAG VARCHAR(255),             -- ETag of the resource as per HTTP headers
+    HTTP_LAST_MODIFIED VARCHAR(255),    -- Last modified date of the resource as per HTTP headers
+    HTTP_STATUS INT,                    -- HTTP status code (e.g., 200, 404, etc.)
+    HTTP_LOCATION VARCHAR(255),         -- If the server redirects, this is the location of the redirect
+    HTTP_RESPONSE_TIME_MS SMALLINT UNSIGNED, -- Response time in milliseconds
+
+    ERROR_CLASSIFICATION ENUM('NONE', 'TIMEOUT', 'SSL_ERROR', 'DNS_ERROR', 'CONNECTION_ERROR', 'HTTP_CLIENT_ERROR', 'HTTP_SERVER_ERROR', 'UNKNOWN'), -- Classification of the error if the server is not available
+    ERROR_MESSAGE VARCHAR(255),         -- Error message if the server is not available
+
+    TS_LAST_PING TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, -- Timestamp of the last ping
+    TS_LAST_AVAILABLE TIMESTAMP,        -- Timestamp of the last time the server was available
+    TS_LAST_ERROR TIMESTAMP,             -- Timestamp of the last error encountered
+
+    NEXT_SCHEDULED_UPDATE TIMESTAMP NOT NULL,
+    BACKOFF_CONSECUTIVE_FAILURES INT NOT NULL DEFAULT 0, -- Number of consecutive failures to ping the server
+    BACKOFF_FETCH_INTERVAL INT NOT NULL DEFAULT 60 -- Interval in seconds for the next scheduled ping
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
+
+CREATE INDEX IF NOT EXISTS DOMAIN_AVAILABILITY_INFORMATION__NODE_ID__DOMAIN_ID_IDX ON DOMAIN_AVAILABILITY_INFORMATION (NODE_ID, DOMAIN_ID);
+CREATE INDEX IF NOT EXISTS DOMAIN_AVAILABILITY_INFORMATION__NEXT_SCHEDULED_UPDATE_IDX ON DOMAIN_AVAILABILITY_INFORMATION (NODE_ID, NEXT_SCHEDULED_UPDATE);
+
+
+
+CREATE TABLE IF NOT EXISTS DOMAIN_SECURITY_INFORMATION (
+    DOMAIN_ID INT NOT NULL PRIMARY KEY,
+    NODE_ID INT NOT NULL,
+
+    ASN INTEGER,                     -- Autonomous System Number (ASN) of the server
+    HTTP_SCHEMA ENUM('HTTP', 'HTTPS'),  -- HTTP or HTTPS protocol used
+    HTTP_VERSION VARCHAR(10),           -- HTTP version used (e.g., HTTP/1.1, HTTP/2)
+    HTTP_COMPRESSION VARCHAR(50),       -- Compression method used (e.g., gzip, deflate, br)
+    HTTP_CACHE_CONTROL TEXT,            -- Cache control directives from HTTP headers
+
+    SSL_CERT_NOT_BEFORE TIMESTAMP,         -- Valid from date (usually same as issued)
+    SSL_CERT_NOT_AFTER TIMESTAMP,          -- Valid until date (usually same as expires)
+
+    SSL_CERT_ISSUER VARCHAR(255),         -- CA that issued the cert
+    SSL_CERT_SUBJECT VARCHAR(255),        -- Certificate subject/CN
+
+    SSL_CERT_PUBLIC_KEY_HASH BINARY(32),     -- SHA-256 hash of the public key
+    SSL_CERT_SERIAL_NUMBER VARCHAR(100),     -- Unique cert serial number
+    SSL_CERT_FINGERPRINT_SHA256 BINARY(32),  -- SHA-256 fingerprint for exact identification
+    SSL_CERT_SAN TEXT,                       -- Subject Alternative Names (JSON array)
+    SSL_CERT_WILDCARD BOOLEAN,               -- Wildcard certificate (*.example.com)
+
+    SSL_PROTOCOL VARCHAR(20),             -- TLS 1.2, TLS 1.3, etc.
+    SSL_CIPHER_SUITE VARCHAR(100),        -- e.g., TLS_AES_256_GCM_SHA384
+    SSL_KEY_EXCHANGE VARCHAR(50),         -- ECDHE, RSA, etc.
+    SSL_CERTIFICATE_CHAIN_LENGTH TINYINT, -- Number of certs in chain
+
+    SSL_CERTIFICATE_VALID BOOLEAN,        -- Valid cert chain
+
+    HEADER_CORS_ALLOW_ORIGIN TEXT,               -- Could be *, specific domains, or null
+    HEADER_CORS_ALLOW_CREDENTIALS BOOLEAN,       -- Credential handling
+    HEADER_CONTENT_SECURITY_POLICY_HASH INT,     -- CSP header, hash of the policy
+    HEADER_STRICT_TRANSPORT_SECURITY VARCHAR(255), -- HSTS header
+    HEADER_REFERRER_POLICY VARCHAR(50),          -- Referrer handling
+    HEADER_X_FRAME_OPTIONS VARCHAR(50),          -- Clickjacking protection
+    HEADER_X_CONTENT_TYPE_OPTIONS VARCHAR(50),   -- MIME sniffing protection
+    HEADER_X_XSS_PROTECTION VARCHAR(50),         -- XSS protection header
+
+    HEADER_SERVER VARCHAR(255),                 -- Server header (e.g., Apache, Nginx, etc.)
+    HEADER_X_POWERED_BY VARCHAR(255),           -- X-Powered-By header (if present)
+
+    TS_LAST_UPDATE TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP -- Timestamp of the last SSL check
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
+
+
+CREATE INDEX IF NOT EXISTS DOMAIN_SECURITY_INFORMATION__NODE_ID__DOMAIN_ID_IDX ON DOMAIN_SECURITY_INFORMATION (NODE_ID, DOMAIN_ID);
+
+CREATE TABLE IF NOT EXISTS DOMAIN_SECURITY_EVENTS (
+    CHANGE_ID BIGINT AUTO_INCREMENT PRIMARY KEY, -- Unique identifier for the change
+    DOMAIN_ID INT NOT NULL, -- Domain ID, used as a foreign key to EC_DOMAIN
+    NODE_ID INT NOT NULL,
+
+    TS_CHANGE TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, -- Timestamp of the change
+
+    CHANGE_ASN BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to ASN (Autonomous System Number)
+    CHANGE_CERTIFICATE_FINGERPRINT BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to SSL certificate fingerprint
+    CHANGE_CERTIFICATE_PROFILE BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to SSL certificate profile (e.g., algorithm, exchange)
+    CHANGE_CERTIFICATE_SAN BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to SSL certificate SAN (Subject Alternative Name)
+    CHANGE_CERTIFICATE_PUBLIC_KEY BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to SSL certificate public key
+    CHANGE_SECURITY_HEADERS BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to security headers
+    CHANGE_IP_ADDRESS BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to IP address
+    CHANGE_SOFTWARE BOOLEAN  NOT NULL DEFAULT FALSE, -- Indicates if the change is related to the generator (e.g., web server software)
+    OLD_CERT_TIME_TO_EXPIRY INT, -- Time to expiry of the old certificate in hours, if applicable
+
+    SECURITY_SIGNATURE_BEFORE BLOB NOT NULL, -- Security signature before the change, gzipped json record
+    SECURITY_SIGNATURE_AFTER BLOB NOT NULL  -- Security signature after the change, gzipped json record
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
+
+CREATE INDEX IF NOT EXISTS DOMAIN_SECURITY_EVENTS__NODE_ID__DOMAIN_ID_IDX ON DOMAIN_SECURITY_EVENTS (NODE_ID, DOMAIN_ID);
+CREATE INDEX IF NOT EXISTS DOMAIN_SECURITY_EVENTS__TS_CHANGE_IDX ON DOMAIN_SECURITY_EVENTS (TS_CHANGE);
+
+CREATE TABLE IF NOT EXISTS DOMAIN_AVAILABILITY_EVENTS (
+    DOMAIN_ID INT NOT NULL,
+    NODE_ID INT NOT NULL,
+
+    AVAILABLE BOOLEAN NOT NULL, -- True if the service is available, false if it is not
+    OUTAGE_TYPE ENUM('NONE', 'TIMEOUT', 'SSL_ERROR', 'DNS_ERROR', 'CONNECTION_ERROR', 'HTTP_CLIENT_ERROR', 'HTTP_SERVER_ERROR', 'UNKNOWN') NOT NULL,
+    HTTP_STATUS_CODE INT, -- HTTP status code if available (e.g., 200, 404, etc.)
+    ERROR_MESSAGE VARCHAR(255),       -- Specific error details
+
+    TS_CHANGE TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, -- Timestamp of the last update
+
+    AVAILABILITY_RECORD_ID BIGINT AUTO_INCREMENT,
+    P_KEY_MONTH TINYINT NOT NULL DEFAULT MONTH(TS_CHANGE), -- Month of the change for partitioning
+    PRIMARY KEY (AVAILABILITY_RECORD_ID, P_KEY_MONTH)
+)
+CHARACTER SET utf8mb4 COLLATE utf8mb4_bin
+PARTITION BY RANGE (P_KEY_MONTH) (
+    PARTITION p0 VALUES LESS THAN (1),  -- January
+    PARTITION p1 VALUES LESS THAN (2),  -- February
+    PARTITION p2 VALUES LESS THAN (3),  -- March
+    PARTITION p3 VALUES LESS THAN (4),  -- April
+    PARTITION p4 VALUES LESS THAN (5),  -- May
+    PARTITION p5 VALUES LESS THAN (6),  -- June
+    PARTITION p6 VALUES LESS THAN (7),  -- July
+    PARTITION p7 VALUES LESS THAN (8),  -- August
+    PARTITION p8 VALUES LESS THAN (9),  -- September
+    PARTITION p9 VALUES LESS THAN (10), -- October
+    PARTITION p10 VALUES LESS THAN (11), -- November
+    PARTITION p11 VALUES LESS THAN (12)  -- December
+);
+
+CREATE INDEX DOMAIN_AVAILABILITY_EVENTS__DOMAIN_ID_TS_IDX ON DOMAIN_AVAILABILITY_EVENTS (DOMAIN_ID, TS_CHANGE);
+CREATE INDEX DOMAIN_AVAILABILITY_EVENTS__TS_CHANGE_IDX ON DOMAIN_AVAILABILITY_EVENTS (TS_CHANGE);
+
+CREATE TABLE IF NOT EXISTS DOMAIN_DNS_INFORMATION (
+    DNS_ROOT_DOMAIN_ID INT AUTO_INCREMENT PRIMARY KEY,
+    ROOT_DOMAIN_NAME VARCHAR(255) NOT NULL UNIQUE,
+    NODE_AFFINITY INT NOT NULL,              -- Node ID that performs the DNS check, assign randomly across nodes
+
+    DNS_A_RECORDS TEXT,                      -- JSON array of IPv4 addresses
+    DNS_AAAA_RECORDS TEXT,                   -- JSON array of IPv6 addresses
+    DNS_CNAME_RECORD VARCHAR(255),           -- Canonical name (if applicable)
+    DNS_MX_RECORDS TEXT,                     -- JSON array of mail exchange records
+    DNS_CAA_RECORDS TEXT,                    -- Certificate Authority Authorization
+    DNS_TXT_RECORDS TEXT,                    -- TXT records (SPF, DKIM, verification, etc.)
+    DNS_NS_RECORDS TEXT,                     -- Name servers (JSON array)
+    DNS_SOA_RECORD TEXT,                     -- Start of Authority (JSON object)
+
+    TS_LAST_DNS_CHECK TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    TS_NEXT_DNS_CHECK TIMESTAMP NOT NULL,
+    DNS_CHECK_PRIORITY TINYINT DEFAULT 0    -- Priority of the DNS check, in case we want to schedule a refresh sooner
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+CREATE INDEX DOMAIN_DNS_INFORMATION__PRIORITY_NEXT_CHECK_IDX ON DOMAIN_DNS_INFORMATION (NODE_AFFINITY, DNS_CHECK_PRIORITY DESC, TS_NEXT_DNS_CHECK);
+
+CREATE TABLE IF NOT EXISTS DOMAIN_DNS_EVENTS (
+     DNS_ROOT_DOMAIN_ID INT NOT NULL,
+     NODE_ID INT NOT NULL,
+
+     TS_CHANGE TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+-- DNS change type flags
+     CHANGE_A_RECORDS BOOLEAN NOT NULL DEFAULT FALSE,        -- IPv4 address changes
+     CHANGE_AAAA_RECORDS BOOLEAN NOT NULL DEFAULT FALSE,     -- IPv6 address changes
+     CHANGE_CNAME BOOLEAN NOT NULL DEFAULT FALSE,            -- CNAME changes
+     CHANGE_MX_RECORDS BOOLEAN NOT NULL DEFAULT FALSE,       -- Mail server changes
+     CHANGE_CAA_RECORDS BOOLEAN NOT NULL DEFAULT FALSE,      -- Certificate authority changes
+     CHANGE_TXT_RECORDS BOOLEAN NOT NULL DEFAULT FALSE,      -- TXT record changes (SPF, DKIM, etc.)
+     CHANGE_NS_RECORDS BOOLEAN NOT NULL DEFAULT FALSE,       -- Name server changes (big red flag!)
+     CHANGE_SOA_RECORD BOOLEAN NOT NULL DEFAULT FALSE,       -- Start of Authority changes
+
+     DNS_SIGNATURE_BEFORE BLOB NOT NULL,  -- Compressed JSON snapshot of DNS records before change
+     DNS_SIGNATURE_AFTER BLOB NOT NULL,    -- Compressed JSON snapshot of DNS records after change
+
+     DNS_EVENT_ID BIGINT AUTO_INCREMENT,
+     P_KEY_MONTH TINYINT NOT NULL DEFAULT MONTH(TS_CHANGE), -- Month of the change for partitioning
+     PRIMARY KEY (DNS_EVENT_ID, P_KEY_MONTH)
+)
+CHARACTER SET utf8mb4 COLLATE utf8mb4_bin
+PARTITION BY RANGE (P_KEY_MONTH) (
+    PARTITION p0 VALUES LESS THAN (1),  -- January
+    PARTITION p1 VALUES LESS THAN (2),  -- February
+    PARTITION p2 VALUES LESS THAN (3),  -- March
+    PARTITION p3 VALUES LESS THAN (4),  -- April
+    PARTITION p4 VALUES LESS THAN (5),  -- May
+    PARTITION p5 VALUES LESS THAN (6),  -- June
+    PARTITION p6 VALUES LESS THAN (7),  -- July
+    PARTITION p7 VALUES LESS THAN (8),  -- August
+    PARTITION p8 VALUES LESS THAN (9),  -- September
+    PARTITION p9 VALUES LESS THAN (10), -- October
+    PARTITION p10 VALUES LESS THAN (11), -- November
+    PARTITION p11 VALUES LESS THAN (12)  -- December
+);
+
+CREATE INDEX DOMAIN_DNS_EVENTS__DNS_ROOT_DOMAIN_ID_TS_IDX ON DOMAIN_DNS_EVENTS (DNS_ROOT_DOMAIN_ID, TS_CHANGE);
+CREATE INDEX DOMAIN_DNS_EVENTS__TS_CHANGE_IDX ON DOMAIN_DNS_EVENTS (TS_CHANGE);

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

@@ -0,0 +1,24 @@
+package nu.marginalia.model;
+
+public enum DocumentFormat {
+    PLAIN(0, 1, "text"),
+    PDF(0, 1, "pdf"),
+    UNKNOWN(0, 1, "???"),
+    HTML123(0, 1, "html"),
+    HTML4(-0.1, 1.05, "html"),
+    XHTML(-0.1, 1.05, "html"),
+    HTML5(0.5, 1.1, "html");
+
+    /** Used to tune quality score */
+    public final double offset;
+    /** Used to tune quality score */
+    public final double scale;
+    public final String shortFormat;
+
+    DocumentFormat(double offset, double scale, String shortFormat) {
+        this.offset = offset;
+        this.scale = scale;
+        this.shortFormat = shortFormat;
+    }
+
+}

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

@@ -112,14 +112,6 @@ public class EdgeDomain implements Serializable {
         return topDomain;
     }
 
-    public String getDomainKey() {
-        int cutPoint = topDomain.indexOf('.');
-        if (cutPoint < 0) {
-            return topDomain;
-        }
-        return topDomain.substring(0, cutPoint).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/model/java/nu/marginalia/model/crawl/HtmlFeature.java

@@ -28,6 +28,8 @@ public enum HtmlFeature {
 
     GA_SPAM("special:gaspam"),
 
+    PDF("format:pdf"),
+
     /** For fingerprinting and ranking */
     OPENGRAPH("special:opengraph"),
     OPENGRAPH_IMAGE("special:opengraph:image"),

code/common/model/java/nu/marginalia/model/gson/GsonFactory.java

@@ -6,11 +6,20 @@ import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.EdgeUrl;
 
 import java.net.URISyntaxException;
+import java.time.Instant;
 
 public class GsonFactory {
     public static Gson get() {
         return new GsonBuilder()
                 .registerTypeAdapterFactory(RecordTypeAdapterFactory.builder().allowMissingComponentValues().create())
+                .registerTypeAdapter(Instant.class, (JsonSerializer<Instant>) (src, typeOfSrc, context) -> new JsonPrimitive(src.toEpochMilli()))
+                .registerTypeAdapter(Instant.class, (JsonDeserializer<Instant>) (json, typeOfT, context) -> {
+                    if (json.isJsonPrimitive() && json.getAsJsonPrimitive().isNumber()) {
+                        return Instant.ofEpochMilli(json.getAsLong());
+                    } else {
+                        throw new JsonParseException("Expected a number for Instant");
+                    }
+                })
                 .registerTypeAdapter(EdgeUrl.class, (JsonSerializer<EdgeUrl>) (src, typeOfSrc, context) -> new JsonPrimitive(src.toString()))
                 .registerTypeAdapter(EdgeDomain.class, (JsonSerializer<EdgeDomain>) (src, typeOfSrc, context) -> new JsonPrimitive(src.toString()))
                 .registerTypeAdapter(EdgeUrl.class, (JsonDeserializer<EdgeUrl>) (json, typeOfT, context) -> {

code/common/model/java/nu/marginalia/model/html/HtmlStandard.java

@@ -1,22 +0,0 @@
-package nu.marginalia.model.html;
-
-// This class really doesn't belong anywhere, but will squat here for now
-public enum HtmlStandard {
-    PLAIN(0, 1),
-    UNKNOWN(0, 1),
-    HTML123(0, 1),
-    HTML4(-0.1, 1.05),
-    XHTML(-0.1, 1.05),
-    HTML5(0.5, 1.1);
-
-    /** Used to tune quality score */
-    public final double offset;
-    /** Used to tune quality score */
-    public final double scale;
-
-    HtmlStandard(double offset, double scale) {
-        this.offset = offset;
-        this.scale = scale;
-    }
-
-}

code/common/model/java/nu/marginalia/model/idx/DocumentFlags.java

@@ -9,7 +9,7 @@ public enum DocumentFlags {
     GeneratorForum,
     GeneratorWiki,
     Sideloaded,
-    Unused7,
+    PdfFile,
     Unused8,
     ;
 

code/common/model/test/nu/marginalia/model/EdgeDomainTest.java

@@ -8,14 +8,6 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 
 class EdgeDomainTest {
 
-    @Test
-    public void testSkepdic() throws URISyntaxException {
-        var domain = new EdgeUrl("http://www.skepdic.com/astrology.html");
-        assertEquals("skepdic", domain.getDomain().getDomainKey());
-        var domain2 = new EdgeUrl("http://skepdic.com/astrology.html");
-        assertEquals("skepdic", domain2.getDomain().getDomainKey());
-    }
-
     @Test
     public void testHkDomain() throws URISyntaxException {
         var domain = new EdgeUrl("http://l7072i3.l7c.net");

code/common/service/java/nu/marginalia/process/control/ProcessEventLog.java

@@ -0,0 +1,59 @@
+package nu.marginalia.process.control;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.process.ProcessConfiguration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.SQLException;
+import java.util.Objects;
+import java.util.UUID;
+
+@Singleton
+public class ProcessEventLog {
+    private final HikariDataSource dataSource;
+
+    private final Logger logger = LoggerFactory.getLogger(ProcessEventLog.class);
+
+    private final String serviceName;
+    private final UUID instanceUuid;
+    private final String serviceBase;
+
+    @Inject
+    public ProcessEventLog(HikariDataSource dataSource, ProcessConfiguration configuration) {
+        this.dataSource = dataSource;
+
+        this.serviceName = configuration.processName() + ":" + configuration.node();
+        this.instanceUuid = configuration.instanceUuid();
+        this.serviceBase = configuration.processName();
+
+        logger.info("Starting service {} instance {}", serviceName, instanceUuid);
+
+        logEvent("PCS-START", serviceName);
+    }
+
+    public void logEvent(Class<?> type, String message) {
+        logEvent(type.getSimpleName(), message);
+    }
+    public void logEvent(String type, String message) {
+
+        try (var conn = dataSource.getConnection();
+             var stmt = conn.prepareStatement("""
+                        INSERT INTO SERVICE_EVENTLOG(SERVICE_NAME, SERVICE_BASE, INSTANCE, EVENT_TYPE, EVENT_MESSAGE)
+                        VALUES (?, ?, ?, ?, ?)
+                     """)) {
+            stmt.setString(1, serviceName);
+            stmt.setString(2, serviceBase);
+            stmt.setString(3, instanceUuid.toString());
+            stmt.setString(4, type);
+            stmt.setString(5, Objects.requireNonNull(message, ""));
+
+            stmt.executeUpdate();
+        }
+        catch (SQLException ex) {
+            logger.error("Failed to log event {}:{}", type, message);
+        }
+    }
+}

code/common/service/java/nu/marginalia/service/discovery/ServiceRegistryIf.java

@@ -1,17 +1,23 @@
 package nu.marginalia.service.discovery;
 
-import nu.marginalia.service.discovery.monitor.*;
+import com.google.inject.ImplementedBy;
+import nu.marginalia.service.discovery.monitor.ServiceChangeMonitor;
+import nu.marginalia.service.discovery.monitor.ServiceMonitorIf;
 import nu.marginalia.service.discovery.property.ServiceEndpoint;
-import static nu.marginalia.service.discovery.property.ServiceEndpoint.*;
-
 import nu.marginalia.service.discovery.property.ServiceKey;
 
+import java.util.Collection;
 import java.util.List;
 import java.util.UUID;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+
+import static nu.marginalia.service.discovery.property.ServiceEndpoint.InstanceAddress;
 
 /** A service registry that allows services to register themselves and
  * be discovered by other services on the network.
  */
+@ImplementedBy(ZkServiceRegistry.class)
 public interface ServiceRegistryIf {
     /**
      * Register a service with the registry.
@@ -57,4 +63,9 @@ public interface ServiceRegistryIf {
      * </ul>
      * */
     void registerMonitor(ServiceMonitorIf monitor) throws Exception;
+
+    void registerProcess(String processName, int nodeId);
+    void deregisterProcess(String processName, int nodeId);
+    void watchProcess(String processName, int nodeId, Consumer<Boolean> callback) throws Exception;
+    void watchProcessAnyNode(String processName, Collection<Integer> nodes, BiConsumer<Boolean, Integer> callback) throws Exception;
 }

code/common/service/java/nu/marginalia/service/discovery/ZkServiceRegistry.java

@@ -13,11 +13,10 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.nio.charset.StandardCharsets;
-import java.util.ArrayList;
+import java.util.*;
-import java.util.List;
-import java.util.Random;
-import java.util.UUID;
 import java.util.concurrent.TimeUnit;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
 
 import static nu.marginalia.service.discovery.property.ServiceEndpoint.InstanceAddress;
 
@@ -256,6 +255,90 @@ public class ZkServiceRegistry implements ServiceRegistryIf {
                 .forPath("/running-instances");
     }
 
+    @Override
+    public void registerProcess(String processName, int nodeId) {
+        String path = "/process-locks/" + processName + "/" + nodeId;
+        try {
+            curatorFramework.create()
+                    .creatingParentsIfNeeded()
+                    .withMode(CreateMode.EPHEMERAL)
+                    .forPath(path);
+            livenessPaths.add(path);
+        }
+        catch (Exception ex) {
+            logger.error("Failed to register process {} on node {}", processName, nodeId, ex);
+        }
+    }
+
+    @Override
+    public void deregisterProcess(String processName, int nodeId) {
+        String path = "/process-locks/" + processName + "/" + nodeId;
+        try {
+            curatorFramework.delete().forPath(path);
+            livenessPaths.remove(path);
+        }
+        catch (Exception ex) {
+            logger.error("Failed to deregister process {} on node {}", processName, nodeId, ex);
+        }
+    }
+
+    @Override
+    public void watchProcess(String processName, int nodeId, Consumer<Boolean> callback) throws Exception {
+        String path = "/process-locks/" + processName + "/" + nodeId;
+
+        // first check if the path exists and call the callback accordingly
+
+        if (curatorFramework.checkExists().forPath(path) != null) {
+            callback.accept(true);
+        }
+        else {
+            callback.accept(false);
+        }
+
+        curatorFramework.watchers().add()
+                .usingWatcher((Watcher) change -> {
+                    Watcher.Event.EventType type = change.getType();
+
+                    if (type == Watcher.Event.EventType.NodeCreated) {
+                        callback.accept(true);
+                    }
+                    if (type == Watcher.Event.EventType.NodeDeleted) {
+                        callback.accept(false);
+                    }
+                })
+                .forPath(path);
+
+    }
+
+    @Override
+    public void watchProcessAnyNode(String processName, Collection<Integer> nodes, BiConsumer<Boolean, Integer> callback) throws Exception {
+
+        for (int node : nodes) {
+            String path = "/process-locks/" + processName + "/" + node;
+
+            // first check if the path exists and call the callback accordingly
+            if (curatorFramework.checkExists().forPath(path) != null) {
+                callback.accept(true, node);
+            }
+            else {
+                callback.accept(false, node);
+            }
+
+            curatorFramework.watchers().add()
+                    .usingWatcher((Watcher) change -> {
+                        Watcher.Event.EventType type = change.getType();
+
+                        if (type == Watcher.Event.EventType.NodeCreated) {
+                            callback.accept(true, node);
+                        }
+                        if (type == Watcher.Event.EventType.NodeDeleted) {
+                            callback.accept(false, node);
+                        }
+                    })
+                    .forPath(path);
+        }
+    }
+
     /* Exposed for tests */
     public synchronized void shutDown() {
         if (stopped)

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

@@ -3,11 +3,18 @@
         <Console name="Console" target="SYSTEM_OUT">
             <PatternLayout pattern="%d{HH:mm:ss,SSS} %style{%-8markerSimpleName}{FG_Cyan} %highlight{%-5level}{FATAL=red, ERROR=red, WARN=yellow} %-24t %-20c{1}  --  %msg%n"/>
             <Filters>
+                <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>
         </Console>
+        <Console name="ProcessConsole" target="SYSTEM_OUT">
+            <PatternLayout pattern="%style{P}{FG_Cyan} %msg%n"/>
+            <Filters>
+                <MarkerFilter marker="PROCESS" onMatch="ALLOW" onMismatch="DENY" />
+            </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"
                      ignoreExceptions="false">
             <JSONLayout compact="true" eventEol="true" properties="true" stacktraceAsString="true" includeTimeMillis="true"/>
@@ -15,6 +22,7 @@
                 <MarkerFilter marker="QUERY" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="HTTP" onMatch="DENY" onMismatch="NEUTRAL" />
                 <MarkerFilter marker="CRAWLER" onMatch="DENY" onMismatch="NEUTRAL" />
+                <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
             </Filters>
             <SizeBasedTriggeringPolicy size="10MB" />
         </RollingFile>
@@ -31,9 +39,11 @@
     </Appenders>
     <Loggers>
         <Logger name="org.apache.zookeeper" level="WARN" />
-
+        <Logger name="org.apache.pdfbox" level="ERROR" />
+        <Logger name="org.apache.fontbox.ttf" level="ERROR" />
         <Root level="info">
             <AppenderRef ref="Console"/>
+            <AppenderRef ref="ProcessConsole"/>
             <AppenderRef ref="LogToFile"/>
         </Root>
     </Loggers>

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

@@ -1,13 +1,51 @@
 <Configuration xmlns="http://logging.apache.org/log4j/2.0/config" >
     <Appenders>
-        <Console name="Console" target="SYSTEM_OUT">
+        <Console name="ConsoleInfo" target="SYSTEM_OUT">
-            <PatternLayout pattern="%d{HH:mm:ss,SSS} %style{%-8markerSimpleName}{FG_Cyan} %highlight{%-5level}{FATAL=red, ERROR=red, WARN=yellow} %-24t %-20c{1}  --  %msg%n"/>
+            <PatternLayout pattern="- %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
             <Filters>
+                <LevelMatchFilter level="INFO" onMatch="ALLOW" onMismatch="DENY"/>
+                <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>
         </Console>
+        <Console name="ConsoleWarn" target="SYSTEM_OUT">
+            <PatternLayout pattern="⚠ %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="WARN" onMatch="ALLOW" onMismatch="DENY"/>
+                <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>
+        </Console>
+        <Console name="ConsoleError" target="SYSTEM_OUT">
+            <PatternLayout pattern="🔥 %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="ERROR" onMatch="ALLOW" onMismatch="DENY"/>
+                <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>
+        </Console>
+        <Console name="ConsoleFatal" target="SYSTEM_OUT">
+            <PatternLayout pattern="💀 %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="FATAL" onMatch="ALLOW" onMismatch="DENY"/>
+                <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>
+        </Console>
+        <Console name="ProcessConsole" target="SYSTEM_OUT">
+            <PatternLayout pattern="%style{%msg%n}{FG_Cyan}"/>
+            <Filters>
+                <MarkerFilter marker="PROCESS" onMatch="ALLOW" onMismatch="DENY" />
+            </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"
                      ignoreExceptions="false">
             <PatternLayout>
@@ -34,9 +72,14 @@
     </Appenders>
     <Loggers>
         <Logger name="org.apache.zookeeper" level="WARN" />
-
+        <Logger name="org.apache.pdfbox" level="ERROR" />
+        <Logger name="org.apache.fontbox.ttf" level="ERROR" />
         <Root level="info">
-            <AppenderRef ref="Console"/>
+            <AppenderRef ref="ConsoleInfo"/>
+            <AppenderRef ref="ConsoleWarn"/>
+            <AppenderRef ref="ConsoleError"/>
+            <AppenderRef ref="ConsoleFatal"/>
+            <AppenderRef ref="ProcessConsole"/>
             <AppenderRef ref="LogToFile"/>
         </Root>
     </Loggers>

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

@@ -1,15 +1,50 @@
 <Configuration xmlns="http://logging.apache.org/log4j/2.0/config" >
     <Appenders>
-        <Console name="Console" target="SYSTEM_OUT">
+        <Console name="ConsoleInfo" target="SYSTEM_OUT">
-            <PatternLayout pattern="%d{HH:mm:ss,SSS} %style{%-8markerSimpleName}{FG_Cyan} %highlight{%-5level}{FATAL=red, ERROR=red, WARN=yellow} %-24t %-20c{1}  --  %msg%n"/>
+            <PatternLayout pattern="- %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="INFO" onMatch="ALLOW" onMismatch="DENY"/>
+                <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
+            </Filters>
+        </Console>
+        <Console name="ConsoleWarn" target="SYSTEM_OUT">
+            <PatternLayout pattern="⚠ %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="WARN" onMatch="ALLOW" onMismatch="DENY"/>
+                <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
+            </Filters>
+        </Console>
+        <Console name="ConsoleError" target="SYSTEM_OUT">
+            <PatternLayout pattern="🔥 %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="ERROR" onMatch="ALLOW" onMismatch="DENY"/>
+                <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
+            </Filters>
+        </Console>
+        <Console name="ConsoleFatal" target="SYSTEM_OUT">
+            <PatternLayout pattern="💀 %d{HH:mm:ss,SSS} %-20c{1} -- %msg%n"/>
+            <Filters>
+                <LevelMatchFilter level="FATAL" onMatch="ALLOW" onMismatch="DENY"/>
+                <MarkerFilter marker="PROCESS" onMatch="DENY" onMismatch="NEUTRAL" />
+            </Filters>
+        </Console>
+        <Console name="ProcessConsole" target="SYSTEM_OUT">
+            <PatternLayout pattern="%style{%msg%n}{FG_Cyan}"/>
+            <Filters>
+                <MarkerFilter marker="PROCESS" onMatch="ALLOW" onMismatch="DENY" />
+            </Filters>
         </Console>
     </Appenders>
     <Loggers>
         <Logger name="org.apache.zookeeper" level="WARN" />
-
+        <Logger name="org.apache.pdfbox" level="ERROR" />
+        <Logger name="org.apache.fontbox.ttf" level="ERROR" />
         <Root level="info">
-            <AppenderRef ref="Console"/>
+            <AppenderRef ref="ConsoleInfo"/>
-            <AppenderRef ref="LogToFile"/>
+            <AppenderRef ref="ConsoleWarn"/>
+            <AppenderRef ref="ConsoleError"/>
+            <AppenderRef ref="ConsoleFatal"/>
+            <AppenderRef ref="ProcessConsole"/>
         </Root>
     </Loggers>
 </Configuration>

code/execution/build.gradle

@@ -19,6 +19,7 @@ dependencies {
     implementation project(':code:processes:crawling-process')
     implementation project(':code:processes:live-crawling-process')
     implementation project(':code:processes:loading-process')
+    implementation project(':code:processes:ping-process')
     implementation project(':code:processes:converting-process')
     implementation project(':code:processes:index-constructor-process')
 
@@ -37,6 +38,7 @@ dependencies {
     implementation project(':code:functions:link-graph:api')
     implementation project(':code:functions:live-capture:api')
     implementation project(':code:functions:search-query')
+    implementation project(':code:functions:nsfw-domain-filter')
     implementation project(':code:execution:api')
 
     implementation project(':code:processes:crawling-process:model')

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

@@ -6,11 +6,13 @@ import java.util.Set;
 
 public enum ExecutorActor {
     PREC_EXPORT_ALL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
+    SYNC_NSFW_LISTS(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
 
     CRAWL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     RECRAWL(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     RECRAWL_SINGLE_DOMAIN(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     PROC_CRAWLER_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
+    PROC_PING_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED, NodeProfile.SIDELOAD),
     PROC_EXPORT_TASKS_SPAWNER(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     ADJACENCY_CALCULATION(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
     EXPORT_DATA(NodeProfile.BATCH_CRAWL, NodeProfile.MIXED),
@@ -35,7 +37,8 @@ public enum ExecutorActor {
     LIVE_CRAWL(NodeProfile.REALTIME),
     PROC_LIVE_CRAWL_SPAWNER(NodeProfile.REALTIME),
     SCRAPE_FEEDS(NodeProfile.REALTIME),
-    UPDATE_RSS(NodeProfile.REALTIME);
+    UPDATE_RSS(NodeProfile.REALTIME)
+    ;
 
     public String id() {
         return "fsm:" + name().toLowerCase();

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

@@ -49,6 +49,7 @@ public class ExecutorActorControlService {
                                        RecrawlSingleDomainActor recrawlSingleDomainActor,
                                        RestoreBackupActor restoreBackupActor,
                                        ConverterMonitorActor converterMonitorFSM,
+                                       PingMonitorActor pingMonitorActor,
                                        CrawlerMonitorActor crawlerMonitorActor,
                                        LiveCrawlerMonitorActor liveCrawlerMonitorActor,
                                        LoaderMonitorActor loaderMonitor,
@@ -68,6 +69,7 @@ public class ExecutorActorControlService {
                                        ExecutorActorStateMachines stateMachines,
                                        MigrateCrawlDataActor migrateCrawlDataActor,
                                        ExportAllPrecessionActor exportAllPrecessionActor,
+                                       UpdateNsfwFiltersActor updateNsfwFiltersActor,
                                        UpdateRssActor updateRssActor) throws SQLException {
         this.messageQueueFactory = messageQueueFactory;
         this.eventLog = baseServiceParams.eventLog;
@@ -88,6 +90,7 @@ public class ExecutorActorControlService {
         register(ExecutorActor.PROC_CONVERTER_SPAWNER, converterMonitorFSM);
         register(ExecutorActor.PROC_LOADER_SPAWNER, loaderMonitor);
         register(ExecutorActor.PROC_CRAWLER_SPAWNER, crawlerMonitorActor);
+        register(ExecutorActor.PROC_PING_SPAWNER, pingMonitorActor);
         register(ExecutorActor.PROC_LIVE_CRAWL_SPAWNER, liveCrawlerMonitorActor);
         register(ExecutorActor.PROC_EXPORT_TASKS_SPAWNER, exportTasksMonitorActor);
 
@@ -109,6 +112,7 @@ public class ExecutorActorControlService {
         register(ExecutorActor.UPDATE_RSS, updateRssActor);
 
         register(ExecutorActor.MIGRATE_CRAWL_DATA, migrateCrawlDataActor);
+        register(ExecutorActor.SYNC_NSFW_LISTS, updateNsfwFiltersActor);
 
         if (serviceConfiguration.node() == 1) {
             register(ExecutorActor.PREC_EXPORT_ALL, exportAllPrecessionActor);

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

@@ -0,0 +1,26 @@
+package nu.marginalia.actor.proc;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.actor.monitor.AbstractProcessSpawnerActor;
+import nu.marginalia.mq.persistence.MqPersistence;
+import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.process.ProcessService;
+import nu.marginalia.service.module.ServiceConfiguration;
+
+@Singleton
+public class PingMonitorActor extends AbstractProcessSpawnerActor {
+
+    @Inject
+    public PingMonitorActor(Gson gson, ServiceConfiguration configuration, MqPersistence persistence, ProcessService processService) {
+        super(gson,
+                configuration,
+                persistence,
+                processService,
+                ProcessInboxNames.PING_INBOX,
+                ProcessService.ProcessId.PING);
+    }
+
+
+}

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

@@ -0,0 +1,53 @@
+package nu.marginalia.actor.task;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.actor.prototype.RecordActorPrototype;
+import nu.marginalia.actor.state.ActorStep;
+import nu.marginalia.nsfw.NsfwDomainFilter;
+import nu.marginalia.service.module.ServiceConfiguration;
+
+@Singleton
+public class UpdateNsfwFiltersActor extends RecordActorPrototype {
+    private final ServiceConfiguration serviceConfiguration;
+    private final NsfwDomainFilter nsfwDomainFilter;
+
+    public record Initial() implements ActorStep {}
+    public record Run() implements ActorStep {}
+
+    @Override
+    public ActorStep transition(ActorStep self) throws Exception {
+        return switch(self) {
+            case Initial() -> {
+                if (serviceConfiguration.node() != 1) {
+                    yield new Error("This actor can only run on node 1");
+                }
+                else {
+                    yield new Run();
+                }
+            }
+            case Run() -> {
+                nsfwDomainFilter.fetchLists();
+                yield new End();
+            }
+            default -> new Error();
+        };
+    }
+
+    @Override
+    public String describe() {
+        return "Sync NSFW filters";
+    }
+
+    @Inject
+    public UpdateNsfwFiltersActor(Gson gson,
+                                  ServiceConfiguration serviceConfiguration,
+                                  NsfwDomainFilter nsfwDomainFilter)
+    {
+        super(gson);
+        this.serviceConfiguration = serviceConfiguration;
+        this.nsfwDomainFilter = nsfwDomainFilter;
+    }
+
+}

code/execution/java/nu/marginalia/process/ProcessService.java

@@ -8,6 +8,7 @@ import nu.marginalia.crawl.CrawlerMain;
 import nu.marginalia.index.IndexConstructorMain;
 import nu.marginalia.livecrawler.LiveCrawlerMain;
 import nu.marginalia.loading.LoaderMain;
+import nu.marginalia.ping.PingMain;
 import nu.marginalia.service.control.ServiceEventLog;
 import nu.marginalia.service.server.BaseServiceParams;
 import nu.marginalia.task.ExportTasksMain;
@@ -41,6 +42,7 @@ public class ProcessService {
         return switch (id) {
             case "converter" -> ProcessId.CONVERTER;
             case "crawler" -> ProcessId.CRAWLER;
+            case "ping" -> ProcessId.PING;
             case "loader" -> ProcessId.LOADER;
             case "export-tasks" -> ProcessId.EXPORT_TASKS;
             case "index-constructor" -> ProcessId.INDEX_CONSTRUCTOR;
@@ -50,6 +52,7 @@ public class ProcessService {
 
     public enum ProcessId {
         CRAWLER(CrawlerMain.class),
+        PING(PingMain.class),
         LIVE_CRAWLER(LiveCrawlerMain.class),
         CONVERTER(ConverterMain.class),
         LOADER(LoaderMain.class),
@@ -68,6 +71,7 @@ public class ProcessService {
                 case LIVE_CRAWLER -> "LIVE_CRAWLER_PROCESS_OPTS";
                 case CONVERTER -> "CONVERTER_PROCESS_OPTS";
                 case LOADER -> "LOADER_PROCESS_OPTS";
+                case PING -> "PING_PROCESS_OPTS";
                 case INDEX_CONSTRUCTOR -> "INDEX_CONSTRUCTION_PROCESS_OPTS";
                 case EXPORT_TASKS -> "EXPORT_TASKS_PROCESS_OPTS";
             };

code/functions/live-capture/build.gradle

@@ -25,9 +25,9 @@ dependencies {
 
     implementation project(':code:execution:api')
     implementation project(':code:processes:crawling-process:ft-content-type')
+    implementation project(':third-party:rssreader')
 
     implementation libs.jsoup
-    implementation project(':third-party:rssreader')
     implementation libs.opencsv
     implementation libs.slop
     implementation libs.sqlite
@@ -57,8 +57,6 @@ dependencies {
     implementation libs.bundles.gson
     implementation libs.bundles.mariadb
 
-
-
     testImplementation libs.bundles.slf4j.test
     testImplementation libs.bundles.junit
     testImplementation libs.mockito

code/functions/live-capture/java/nu/marginalia/domsample/DomSampleService.java

@@ -0,0 +1,126 @@
+package nu.marginalia.domsample;
+
+import com.google.inject.Inject;
+import com.zaxxer.hikari.HikariDataSource;
+import jakarta.inject.Named;
+import nu.marginalia.domsample.db.DomSampleDb;
+import nu.marginalia.livecapture.BrowserlessClient;
+import nu.marginalia.service.module.ServiceConfiguration;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.time.Duration;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+
+public class DomSampleService {
+    private final DomSampleDb db;
+    private final HikariDataSource mariadbDataSource;
+    private final URI browserlessURI;
+
+    private static final Logger logger = LoggerFactory.getLogger(DomSampleService.class);
+
+    @Inject
+    public DomSampleService(DomSampleDb db,
+                            HikariDataSource mariadbDataSource,
+                            @Named("browserless-uri") String browserlessAddress,
+                            ServiceConfiguration serviceConfiguration)
+            throws URISyntaxException
+    {
+        this.db = db;
+        this.mariadbDataSource = mariadbDataSource;
+
+        if (StringUtils.isEmpty(browserlessAddress) || serviceConfiguration.node() > 1) {
+            logger.warn("Live capture service will not run");
+            browserlessURI = null;
+        }
+        else {
+            browserlessURI = new URI(browserlessAddress);
+        }
+    }
+
+    public void start() {
+        if (browserlessURI == null) {
+            logger.warn("DomSampleService is not enabled due to missing browserless URI or multi-node configuration");
+            return;
+        }
+
+        Thread.ofPlatform().daemon().start(this::run);
+    }
+
+    public void syncDomains() {
+        Set<String> dbDomains = new HashSet<>();
+
+        logger.info("Fetching domains from database...");
+
+        try (var conn = mariadbDataSource.getConnection();
+            var stmt = conn.prepareStatement("""
+                SELECT DOMAIN_NAME 
+                FROM EC_DOMAIN 
+                WHERE NODE_AFFINITY>0
+                """)
+        ) {
+            var rs = stmt.executeQuery();
+            while (rs.next()) {
+                dbDomains.add(rs.getString("DOMAIN_NAME"));
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to sync domains", e);
+        }
+
+        logger.info("Found {} domains in database", dbDomains.size());
+
+        db.syncDomains(dbDomains);
+
+        logger.info("Synced domains to sqlite");
+    }
+
+    public void run() {
+
+        try (var client = new BrowserlessClient(browserlessURI)) {
+
+            while (!Thread.currentThread().isInterrupted()) {
+
+                try {
+                    // Grace sleep in case we're operating on an empty domain list
+                    TimeUnit.SECONDS.sleep(15);
+
+                    syncDomains();
+                    var domains = db.getScheduledDomains();
+
+                    for (var domain : domains) {
+                        updateDomain(client, domain);
+                    }
+                } catch (InterruptedException e) {
+                    Thread.currentThread().interrupt();
+                    logger.info("DomSampleService interrupted, stopping...");
+                    return;
+                } catch (Exception e) {
+                    logger.error("Error in DomSampleService run loop", e);
+                }
+            }
+
+        }
+    }
+
+    private void updateDomain(BrowserlessClient client, String domain) {
+        var rootUrl = "https://" + domain + "/";
+        try {
+            var content = client.annotatedContent(rootUrl, new BrowserlessClient.GotoOptions("load", Duration.ofSeconds(10).toMillis()));
+
+            if (content.isPresent()) {
+                db.saveSample(domain, rootUrl, content.get());
+            }
+        } catch (Exception e) {
+            logger.error("Failed to process domain: " + domain, e);
+        }
+        finally {
+            db.flagDomainAsFetched(domain);
+        }
+    }
+
+}

code/functions/live-capture/java/nu/marginalia/domsample/db/DomSampleDb.java

@@ -0,0 +1,174 @@
+package nu.marginalia.domsample.db;
+
+import nu.marginalia.WmsaHome;
+import org.jsoup.Jsoup;
+
+import java.nio.file.Path;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.*;
+
+public class DomSampleDb implements AutoCloseable {
+    private static final String dbFileName = "dom-sample.db";
+    private final Connection connection;
+
+    public DomSampleDb() throws SQLException{
+        this(WmsaHome.getDataPath().resolve(dbFileName));
+    }
+
+    public DomSampleDb(Path dbPath) throws SQLException {
+        String dbUrl = "jdbc:sqlite:" + dbPath.toAbsolutePath();
+
+        connection = DriverManager.getConnection(dbUrl);
+
+        try (var stmt = connection.createStatement()) {
+            stmt.executeUpdate("CREATE TABLE IF NOT EXISTS samples (url TEXT PRIMARY KEY, domain TEXT, sample BLOB, requests BLOB, accepted_popover BOOLEAN DEFAULT FALSE)");
+            stmt.executeUpdate("CREATE INDEX IF NOT EXISTS domain_index ON samples (domain)");
+            stmt.executeUpdate("CREATE TABLE IF NOT EXISTS schedule (domain TEXT PRIMARY KEY, last_fetch TIMESTAMP DEFAULT NULL)");
+            stmt.execute("PRAGMA journal_mode=WAL");
+        }
+
+    }
+
+    public void syncDomains(Set<String> domains) {
+        Set<String> currentDomains = new HashSet<>();
+        try (var stmt = connection.prepareStatement("SELECT domain FROM schedule")) {
+            var rs = stmt.executeQuery();
+            while (rs.next()) {
+                currentDomains.add(rs.getString("domain"));
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to sync domains", e);
+        }
+
+        Set<String> toRemove = new HashSet<>(currentDomains);
+        Set<String> toAdd = new HashSet<>(domains);
+
+        toRemove.removeAll(domains);
+        toAdd.removeAll(currentDomains);
+
+        try (var removeStmt = connection.prepareStatement("DELETE FROM schedule WHERE domain = ?");
+                var addStmt = connection.prepareStatement("INSERT OR IGNORE INTO schedule (domain) VALUES (?)")
+        ) {
+            for (String domain : toRemove) {
+                removeStmt.setString(1, domain);
+                removeStmt.executeUpdate();
+            }
+
+            for (String domain : toAdd) {
+                addStmt.setString(1, domain);
+                addStmt.executeUpdate();
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to remove domains", e);
+        }
+    }
+
+    public List<String> getScheduledDomains() {
+        List<String> domains = new ArrayList<>();
+        try (var stmt = connection.prepareStatement("SELECT domain FROM schedule ORDER BY last_fetch IS NULL DESC, last_fetch ASC")) {
+            var rs = stmt.executeQuery();
+            while (rs.next()) {
+                domains.add(rs.getString("domain"));
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to get scheduled domains", e);
+        }
+        return domains;
+    }
+
+    public void flagDomainAsFetched(String domain) {
+        try (var stmt = connection.prepareStatement("INSERT OR REPLACE INTO schedule (domain, last_fetch) VALUES (?, CURRENT_TIMESTAMP)")) {
+            stmt.setString(1, domain);
+            stmt.executeUpdate();
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to flag domain as fetched", e);
+        }
+    }
+
+
+    public record Sample(String url, String domain, String sample, String requests, boolean acceptedPopover) {}
+
+    public List<Sample> getSamples(String domain) throws SQLException {
+        List<Sample> samples = new ArrayList<>();
+
+        try (var stmt = connection.prepareStatement("""
+                SELECT url, sample, requests, accepted_popover
+                FROM samples 
+                WHERE domain = ?
+                """))
+        {
+            stmt.setString(1, domain);
+            var rs = stmt.executeQuery();
+            while (rs.next()) {
+                samples.add(
+                        new Sample(
+                                rs.getString("url"),
+                                domain,
+                                rs.getString("sample"),
+                                rs.getString("requests"),
+                                rs.getBoolean("accepted_popover")
+                        )
+                );
+            }
+        }
+        return samples;
+    }
+
+    public void saveSample(String domain, String url, String rawContent) throws SQLException {
+        var doc = Jsoup.parse(rawContent);
+
+        var networkRequests = doc.getElementById("marginalia-network-requests");
+
+        boolean acceptedPopover = false;
+
+        StringBuilder requestTsv = new StringBuilder();
+        if (networkRequests != null) {
+
+            acceptedPopover = !networkRequests.getElementsByClass("marginalia-agreed-cookies").isEmpty();
+
+            for (var request : networkRequests.getElementsByClass("network-request")) {
+                String method = request.attr("data-method");
+                String urlAttr = request.attr("data-url");
+                String timestamp = request.attr("data-timestamp");
+
+                requestTsv
+                        .append(method)
+                        .append('\t')
+                        .append(timestamp)
+                        .append('\t')
+                        .append(urlAttr.replace('\n', ' '))
+                        .append("\n");
+            }
+
+            networkRequests.remove();
+        }
+
+        doc.body().removeAttr("id");
+
+        String sample = doc.html();
+
+        saveSampleRaw(domain, url, sample, requestTsv.toString().trim(), acceptedPopover);
+
+    }
+
+    public void saveSampleRaw(String domain, String url, String sample, String requests, boolean acceptedPopover) throws SQLException {
+        try (var stmt = connection.prepareStatement("""
+                INSERT OR REPLACE 
+                INTO samples (domain, url, sample, requests, accepted_popover) 
+                VALUES (?, ?, ?, ?, ?)
+                """)) {
+            stmt.setString(1, domain);
+            stmt.setString(2, url);
+            stmt.setString(3, sample);
+            stmt.setString(4, requests);
+            stmt.setBoolean(5, acceptedPopover);
+            stmt.executeUpdate();
+        }
+    }
+
+    public void close() throws SQLException {
+        connection.close();
+    }
+}

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

@@ -8,10 +8,13 @@ import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.net.URI;
+import java.net.URLEncoder;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
 import java.time.Duration;
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 
@@ -60,6 +63,42 @@ public class BrowserlessClient implements AutoCloseable {
         return Optional.of(rsp.body());
     }
 
+    /** Fetches content with a marginalia hack extension loaded that decorates the DOM with attributes for
+     * certain CSS attributes, to be able to easier identify popovers and other nuisance elements.
+     */
+    public Optional<String> annotatedContent(String url, GotoOptions gotoOptions) throws IOException, InterruptedException {
+        Map<String, Object> requestData = Map.of(
+                "url", url,
+                "userAgent", userAgent,
+                "gotoOptions", gotoOptions,
+                "waitForSelector", Map.of("selector", "#marginaliahack", "timeout", 15000)
+        );
+
+        // Launch parameters for the browserless instance to load the extension
+        Map<String, Object> launchParameters = Map.of(
+                "args", List.of("--load-extension=/dom-export")
+        );
+
+        String launchParametersStr = URLEncoder.encode(gson.toJson(launchParameters), StandardCharsets.UTF_8);
+
+        var request = HttpRequest.newBuilder()
+                .uri(browserlessURI.resolve("/content?token="+BROWSERLESS_TOKEN+"&launch="+launchParametersStr))
+                .method("POST", HttpRequest.BodyPublishers.ofString(
+                        gson.toJson(requestData)
+                ))
+                .header("Content-type", "application/json")
+                .build();
+
+        var rsp = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+
+        if (rsp.statusCode() >= 300) {
+            logger.info("Failed to fetch annotated content for {}, status {}", url, rsp.statusCode());
+            return Optional.empty();
+        }
+
+        return Optional.of(rsp.body());
+    }
+
     public byte[] screenshot(String url, GotoOptions gotoOptions, ScreenshotOptions screenshotOptions)
             throws IOException, InterruptedException {
 

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

@@ -126,7 +126,6 @@ public class LiveCaptureGrpcService
                 }
                 else {
                     EdgeDomain domain = domainNameOpt.get();
-                    String domainNameStr = domain.toString();
 
                     if (!isValidDomainForCapture(domain)) {
                         ScreenshotDbOperations.flagDomainAsFetched(conn, domain);

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

@@ -79,9 +79,17 @@ public class SimpleFeedParser {
                 if (!link.isBlank())
                     break;
                 var tag = element.getElementsByTag(attr).first();
+
                 if (tag != null) {
-                    link = tag.text();
+                    String linkText = tag.text();
+
+                    if (linkText.isBlank()) {
+                        linkText = tag.attr("href");
+                    }
+
+                    link = linkText;
                 }
+
             }
 
             ret.add(new ItemData(title, description, link, pubDate));

code/functions/live-capture/test/nu/marginalia/domsample/db/DomSampleDbTest.java

@@ -0,0 +1,113 @@
+package nu.marginalia.domsample.db;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.testcontainers.shaded.org.apache.commons.io.FileUtils;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DomSampleDbTest {
+    Path tempDir;
+
+    @BeforeEach
+    void setUp() throws Exception {
+        tempDir = Files.createTempDirectory("test");
+    }
+
+    @AfterEach
+    void tearDown() throws IOException {
+        FileUtils.deleteDirectory(tempDir.toFile());
+    }
+
+    @Test
+    public void testSetUp() {
+        var dbPath = tempDir.resolve("test.db");
+        try (var db = new DomSampleDb(dbPath)) {
+        }
+        catch (Exception e) {
+            fail("Failed to set up database: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testSyncDomains() {
+        var dbPath = tempDir.resolve("test.db");
+        try (var db = new DomSampleDb(dbPath)) {
+
+            db.syncDomains(Set.of("example.com", "test.com", "foobar.com"));
+            assertEquals(Set.of("example.com", "test.com", "foobar.com"), new HashSet<>(db.getScheduledDomains()));
+            db.syncDomains(Set.of("example.com", "test.com"));
+            assertEquals(Set.of("example.com", "test.com"), new HashSet<>(db.getScheduledDomains()));
+            db.syncDomains(Set.of("foobar.com", "test.com"));
+            assertEquals(Set.of("foobar.com", "test.com"), new HashSet<>(db.getScheduledDomains()));
+        }
+        catch (Exception e) {
+            fail("Failed to sync domains: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testFetchDomains() {
+        var dbPath = tempDir.resolve("test.db");
+        try (var db = new DomSampleDb(dbPath)) {
+
+            db.syncDomains(Set.of("example.com", "test.com", "foobar.com"));
+            db.flagDomainAsFetched("example.com");
+            db.flagDomainAsFetched("test.com");
+            db.flagDomainAsFetched("foobar.com");
+            assertEquals(List.of("example.com", "test.com", "foobar.com"), db.getScheduledDomains());
+            db.flagDomainAsFetched("test.com");
+            assertEquals(List.of("example.com", "foobar.com", "test.com"), db.getScheduledDomains());
+        }
+        catch (Exception e) {
+            fail("Failed to sync domains: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void saveLoadSingle() {
+        var dbPath = tempDir.resolve("test.db");
+        try (var db = new DomSampleDb(dbPath)) {
+            db.saveSampleRaw("example.com", "http://example.com/sample", "sample data", "requests data", true);
+            var samples = db.getSamples("example.com");
+            assertEquals(1, samples.size());
+            var sample = samples.getFirst();
+            assertEquals("example.com", sample.domain());
+            assertEquals("http://example.com/sample", sample.url());
+            assertEquals("sample data", sample.sample());
+            assertEquals("requests data", sample.requests());
+            assertTrue(sample.acceptedPopover());
+        }
+        catch (Exception e) {
+            fail("Failed to save/load sample: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void saveLoadTwo() {
+        var dbPath = tempDir.resolve("test.db");
+        try (var db = new DomSampleDb(dbPath)) {
+            db.saveSampleRaw("example.com", "http://example.com/sample", "sample data", "r1", true);
+            db.saveSampleRaw("example.com", "http://example.com/sample2", "sample data2", "r2", false);
+            var samples = db.getSamples("example.com");
+            assertEquals(2, samples.size());
+
+            Map<String, String> samplesByUrl = new HashMap<>();
+            for (var sample : samples) {
+                samplesByUrl.put(sample.url(), sample.sample());
+            }
+
+            assertEquals("sample data", samplesByUrl.get("http://example.com/sample"));
+            assertEquals("sample data2", samplesByUrl.get("http://example.com/sample2"));
+        }
+        catch (Exception e) {
+            fail("Failed to save/load sample: " + e.getMessage());
+        }
+    }
+}

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

@@ -3,17 +3,21 @@ package nu.marginalia.livecapture;
 import com.github.tomakehurst.wiremock.WireMockServer;
 import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
 import nu.marginalia.WmsaHome;
+import nu.marginalia.domsample.db.DomSampleDb;
 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.images.PullPolicy;
 import org.testcontainers.junit.jupiter.Testcontainers;
 import org.testcontainers.utility.DockerImageName;
 
 import java.io.IOException;
 import java.net.URI;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.Map;
 
 import static com.github.tomakehurst.wiremock.client.WireMock.*;
@@ -22,9 +26,14 @@ import static com.github.tomakehurst.wiremock.client.WireMock.*;
 @Testcontainers
 @Tag("slow")
 public class BrowserlessClientTest {
-    static GenericContainer<?> container = new GenericContainer<>(DockerImageName.parse("browserless/chrome"))
+    // Run gradle docker if this image is not available
+    static GenericContainer<?> container = new GenericContainer<>(DockerImageName.parse("marginalia-browserless"))
             .withEnv(Map.of("TOKEN", "BROWSERLESS_TOKEN"))
+            .withImagePullPolicy(PullPolicy.defaultPolicy())
             .withNetworkMode("bridge")
+            .withLogConsumer(frame -> {
+                System.out.print(frame.getUtf8String());
+            })
             .withExposedPorts(3000);
 
     static WireMockServer wireMockServer =
@@ -34,6 +43,7 @@ public class BrowserlessClientTest {
     static String localIp;
 
     static URI browserlessURI;
+    static URI browserlessWssURI;
 
     @BeforeAll
     public static void setup() throws IOException {
@@ -44,6 +54,12 @@ public class BrowserlessClientTest {
                 container.getMappedPort(3000))
         );
 
+        browserlessWssURI = URI.create(String.format("ws://%s:%d/?token=BROWSERLESS_TOKEN",
+                container.getHost(),
+                container.getMappedPort(3000))
+        );
+
+
         wireMockServer.start();
         wireMockServer.stubFor(get("/").willReturn(aResponse().withStatus(200).withBody("Ok")));
 
@@ -85,6 +101,30 @@ public class BrowserlessClientTest {
         }
     }
 
+    @Test
+    public void testAnnotatedContent() throws Exception {
+
+        try (var client = new BrowserlessClient(browserlessURI);
+             DomSampleDb dbop = new DomSampleDb(Path.of("/tmp/dom-sample.db"))
+        ) {
+            var content = client.annotatedContent("https://marginalia.nu/", BrowserlessClient.GotoOptions.defaultValues()).orElseThrow();
+            dbop.saveSample("marginalia.nu", "https://marginalia.nu/", content);
+            System.out.println(content);
+            Assertions.assertFalse(content.isBlank(), "Content should not be empty");
+
+            dbop.getSamples("marginalia.nu").forEach(sample -> {
+                System.out.println("Sample URL: " + sample.url());
+                System.out.println("Sample Content: " + sample.sample());
+                System.out.println("Sample Requests: " + sample.requests());
+                System.out.println("Accepted Popover: " + sample.acceptedPopover());
+            });
+        }
+        finally {
+            Files.deleteIfExists(Path.of("/tmp/dom-sample.db"));
+        }
+
+    }
+
     @Test
     public void testScreenshot() throws Exception {
         try (var client = new BrowserlessClient(browserlessURI)) {

code/functions/nsfw-domain-filter/build.gradle

@@ -0,0 +1,43 @@
+plugins {
+    id 'java'
+    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:model')
+    implementation project(':code:common:db')
+
+
+    implementation libs.bundles.slf4j
+    implementation libs.prometheus
+    implementation libs.guava
+    implementation libs.commons.lang3
+    implementation dependencies.create(libs.guice.get()) {
+        exclude group: 'com.google.guava'
+    }
+    implementation libs.notnull
+    implementation libs.fastutil
+    implementation libs.bundles.mariadb
+
+
+    testImplementation libs.bundles.slf4j.test
+    testImplementation libs.bundles.junit
+    testImplementation libs.mockito
+
+    testImplementation platform('org.testcontainers:testcontainers-bom:1.17.4')
+    testImplementation libs.commons.codec
+    testImplementation project(':code:common:service')
+    testImplementation 'org.testcontainers:mariadb:1.17.4'
+    testImplementation 'org.testcontainers:junit-jupiter:1.17.4'
+    testImplementation project(':code:libraries:test-helpers')
+}

code/functions/nsfw-domain-filter/java/nu/marginalia/nsfw/NsfwDomainFilter.java

@@ -0,0 +1,192 @@
+package nu.marginalia.nsfw;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import com.google.inject.name.Named;
+import com.zaxxer.hikari.HikariDataSource;
+import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.InputStreamReader;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.zip.GZIPInputStream;
+
+@Singleton
+public class NsfwDomainFilter {
+    private final HikariDataSource dataSource;
+
+    private final List<String> dangerLists;
+    private final List<String> smutLists;
+
+    private volatile IntOpenHashSet blockedDomainIdsTier1 = new IntOpenHashSet();
+    private volatile IntOpenHashSet blockedDomainIdsTier2 = new IntOpenHashSet();
+
+    private static final Logger logger = LoggerFactory.getLogger(NsfwDomainFilter.class);
+
+    public static final int NSFW_DISABLE = 0;
+    public static final int NSFW_BLOCK_DANGER = 1;
+    public static final int NSFW_BLOCK_SMUT = 2;
+
+    @Inject
+    public NsfwDomainFilter(HikariDataSource dataSource,
+                            @Named("nsfw.dangerLists") List<String> dangerLists,
+                            @Named("nsfw.smutLists") List<String> smutLists
+                            ) {
+        this.dataSource = dataSource;
+
+        this.dangerLists = dangerLists;
+        this.smutLists = smutLists;
+
+        Thread.ofPlatform().daemon().name("NsfwDomainFilterSync").start(() -> {
+            while (true) {
+                sync();
+                try {
+                    TimeUnit.HOURS.sleep(1);
+                } catch (InterruptedException e) {
+                    Thread.currentThread().interrupt();
+                    break; // Exit the loop if interrupted
+                }
+            }
+        });
+    }
+
+    public boolean isBlocked(int domainId, int tier) {
+        if (tier == 0)
+            return false;
+
+        if (tier >= 1 && blockedDomainIdsTier1.contains(domainId))
+            return true;
+        if (tier >= 2 && blockedDomainIdsTier2.contains(domainId))
+            return true;
+
+        return false;
+    }
+
+    private synchronized void sync() {
+        try (var conn = dataSource.getConnection();
+             var stmt = conn.prepareStatement("SELECT ID, TIER FROM NSFW_DOMAINS")
+        ) {
+            var rs = stmt.executeQuery();
+            IntOpenHashSet tier1 = new IntOpenHashSet();
+            IntOpenHashSet tier2 = new IntOpenHashSet();
+
+            while (rs.next()) {
+                int domainId = rs.getInt("ID");
+                int tier = rs.getInt("TIER");
+
+                switch (tier) {
+                    case 1 -> tier1.add(domainId);
+                    case 2 -> tier2.add(domainId);
+                }
+            }
+
+            this.blockedDomainIdsTier1 = tier1;
+            this.blockedDomainIdsTier2 = tier2;
+
+            logger.info("NSFW domain filter synced: {} tier 1, {} tier 2", tier1.size(), tier2.size());
+
+        }
+        catch (SQLException ex) {
+            logger.error("Failed to sync NSFW domain filter", ex);
+        }
+    }
+
+    public synchronized void fetchLists() {
+        try (var conn = dataSource.getConnection();
+             HttpClient client = HttpClient.newBuilder()
+                     .followRedirects(HttpClient.Redirect.ALWAYS)
+                     .build();
+             var stmt = conn.createStatement();
+             var insertStmt = conn.prepareStatement("INSERT IGNORE INTO NSFW_DOMAINS_TMP (ID, TIER) SELECT ID, ? FROM EC_DOMAIN WHERE DOMAIN_NAME = ?")) {
+
+            stmt.execute("DROP TABLE IF EXISTS NSFW_DOMAINS_TMP");
+            stmt.execute("CREATE TABLE NSFW_DOMAINS_TMP LIKE NSFW_DOMAINS");
+
+            List<String> combinedDangerList = new ArrayList<>(10_000);
+            for (var dangerListUrl : dangerLists) {
+                combinedDangerList.addAll(fetchList(client, dangerListUrl));
+            }
+
+            for (String domain : combinedDangerList) {
+                insertStmt.setInt(1, NSFW_BLOCK_DANGER);
+                insertStmt.setString(2, domain);
+                insertStmt.execute();
+            }
+
+            List<String> combinedSmutList = new ArrayList<>(10_000);
+            for (var smutListUrl : smutLists) {
+                combinedSmutList.addAll(fetchList(client, smutListUrl));
+            }
+
+            for (String domain : combinedSmutList) {
+                insertStmt.setInt(1, NSFW_BLOCK_SMUT);
+                insertStmt.setString(2, domain);
+                insertStmt.addBatch();
+                insertStmt.execute();
+            }
+
+            stmt.execute("""
+                    DROP TABLE IF EXISTS NSFW_DOMAINS
+                    """);
+            stmt.execute("""
+                    RENAME TABLE NSFW_DOMAINS_TMP TO NSFW_DOMAINS
+                    """);
+            sync();
+        }
+        catch (SQLException ex) {
+            logger.error("Failed to fetch NSFW domain lists", ex);
+        }
+     }
+
+     public List<String> fetchList(HttpClient client, String url) {
+
+        logger.info("Fetching NSFW domain list from {}", url);
+
+        var request = HttpRequest.newBuilder()
+                .uri(java.net.URI.create(url))
+                .build();
+
+        try {
+            if (url.endsWith(".gz")) {
+                var response = client.send(request, HttpResponse.BodyHandlers.ofByteArray());
+
+                byte[] body = response.body();
+
+                try (var reader = new BufferedReader(new InputStreamReader(new GZIPInputStream(new ByteArrayInputStream(body))))) {
+                    return reader.lines()
+                            .filter(StringUtils::isNotEmpty)
+                            .toList();
+                } catch (Exception e) {
+                    logger.error("Error reading GZIP response from {}", url, e);
+                }
+            } else {
+                var response = client.send(request, HttpResponse.BodyHandlers.ofString());
+                if (response.statusCode() == 200) {
+
+                    return Arrays.stream(StringUtils.split(response.body(), "\n"))
+                            .filter(StringUtils::isNotEmpty)
+                            .toList();
+                } else {
+                    logger.warn("Failed to fetch list from {}: HTTP {}", url, response.statusCode());
+                }
+            }
+        }
+        catch (Exception e) {
+            logger.error("Error fetching NSFW domain list from {}", url, e);
+        }
+
+
+        return List.of();
+     }
+}

code/functions/nsfw-domain-filter/java/nu/marginalia/nsfw/NsfwFilterModule.java

@@ -0,0 +1,30 @@
+package nu.marginalia.nsfw;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Provides;
+import jakarta.inject.Named;
+
+import java.util.List;
+
+public class NsfwFilterModule extends AbstractModule {
+
+    @Provides
+    @Named("nsfw.dangerLists")
+    public List<String> nsfwDomainLists1() {
+        return List.of(
+                "https://raw.githubusercontent.com/olbat/ut1-blacklists/refs/heads/master/blacklists/cryptojacking/domains",
+                "https://raw.githubusercontent.com/olbat/ut1-blacklists/refs/heads/master/blacklists/malware/domains",
+                "https://raw.githubusercontent.com/olbat/ut1-blacklists/refs/heads/master/blacklists/phishing/domains"
+        );
+    }
+    @Provides
+    @Named("nsfw.smutLists")
+    public List<String> nsfwDomainLists2() {
+        return List.of(
+                "https://github.com/olbat/ut1-blacklists/raw/refs/heads/master/blacklists/adult/domains.gz",
+                "https://raw.githubusercontent.com/olbat/ut1-blacklists/refs/heads/master/blacklists/gambling/domains"
+        );
+    }
+
+    public void configure() {}
+}

code/functions/nsfw-domain-filter/test/nu/marginalia/nsfw/NsfwDomainFilterTest.java

@@ -0,0 +1,108 @@
+package nu.marginalia.nsfw;
+
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Guice;
+import com.google.inject.Provides;
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+import jakarta.inject.Named;
+import nu.marginalia.test.TestMigrationLoader;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+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.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+
+@Tag("slow")
+@Testcontainers
+class NsfwDomainFilterTest extends AbstractModule {
+
+    @Container
+    static MariaDBContainer<?> mariaDBContainer = new MariaDBContainer<>("mariadb")
+            .withDatabaseName("WMSA_prod")
+            .withUsername("wmsa")
+            .withPassword("wmsa")
+            .withNetworkAliases("mariadb");
+
+    static HikariDataSource dataSource;
+    static Path tempDir;
+
+    @BeforeAll
+    public static void setUpDb() throws IOException {
+        tempDir = Files.createTempDirectory(NsfwDomainFilterTest.class.getSimpleName());
+
+        System.setProperty("system.homePath", tempDir.toString());
+
+        HikariConfig config = new HikariConfig();
+        config.setJdbcUrl(mariaDBContainer.getJdbcUrl());
+        config.setUsername("wmsa");
+        config.setPassword("wmsa");
+
+        dataSource = new HikariDataSource(config);
+
+        TestMigrationLoader.flywayMigration(dataSource);
+
+        try (var conn = dataSource.getConnection();
+             var stmt = conn.prepareStatement("INSERT INTO EC_DOMAIN (DOMAIN_NAME, DOMAIN_TOP, NODE_AFFINITY) VALUES (?, ?, 1)")
+        ) {
+
+            // Ensure the database is ready
+            conn.createStatement().execute("SELECT 1");
+
+            stmt.setString(1, "www.google.com");
+            stmt.setString(2, "google.com");
+            stmt.executeUpdate();
+            stmt.setString(1, "www.bing.com");
+            stmt.setString(2, "bing.com");
+            stmt.executeUpdate();
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to connect to the database", e);
+        }
+    }
+
+    @Provides
+    @Named("nsfw.dangerLists")
+    public List<String> nsfwDomainLists1() {
+        return List.of(
+                "https://downloads.marginalia.nu/test/list1"
+        );
+    }
+
+    @Provides
+    @Named("nsfw.smutLists")
+    public List<String> nsfwDomainLists2() {
+        return List.of(
+                "https://downloads.marginalia.nu/test/list2.gz"
+        );
+    }
+
+    public void configure() {
+        bind(HikariDataSource.class).toInstance(dataSource);
+    }
+
+    @Test
+    public void test() {
+        var filter = Guice
+                .createInjector(this)
+                .getInstance(NsfwDomainFilter.class);
+
+        filter.fetchLists();
+
+        assertTrue(filter.isBlocked(1, NsfwDomainFilter.NSFW_BLOCK_DANGER));
+        assertTrue(filter.isBlocked(1, NsfwDomainFilter.NSFW_BLOCK_SMUT));
+        assertFalse(filter.isBlocked(2, NsfwDomainFilter.NSFW_BLOCK_DANGER));
+        assertTrue(filter.isBlocked(2, NsfwDomainFilter.NSFW_BLOCK_SMUT));
+    }
+
+}

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

@@ -1,9 +1,6 @@
 package nu.marginalia.api.searchquery;
 
-import nu.marginalia.api.searchquery.model.query.ProcessedQuery;
+import nu.marginalia.api.searchquery.model.query.*;
-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.PrototypeRankingParameters;
 import nu.marginalia.api.searchquery.model.results.SearchResultItem;
@@ -32,6 +29,8 @@ public class QueryProtobufCodec {
         builder.setSearchSetIdentifier(query.specs.searchSetIdentifier);
         builder.setHumanQuery(request.getHumanQuery());
 
+        builder.setNsfwFilterTierValue(request.getNsfwFilterTierValue());
+
         builder.setQuality(IndexProtobufCodec.convertSpecLimit(query.specs.quality));
         builder.setYear(IndexProtobufCodec.convertSpecLimit(query.specs.year));
         builder.setSize(IndexProtobufCodec.convertSpecLimit(query.specs.size));
@@ -78,6 +77,8 @@ public class QueryProtobufCodec {
         builder.setSearchSetIdentifier(query.specs.searchSetIdentifier);
         builder.setHumanQuery(humanQuery);
 
+        builder.setNsfwFilterTier(RpcIndexQuery.NSFW_FILTER_TIER.DANGER);
+
         builder.setQuality(IndexProtobufCodec.convertSpecLimit(query.specs.quality));
         builder.setYear(IndexProtobufCodec.convertSpecLimit(query.specs.year));
         builder.setSize(IndexProtobufCodec.convertSpecLimit(query.specs.size));
@@ -112,6 +113,7 @@ public class QueryProtobufCodec {
                 request.getSearchSetIdentifier(),
                 QueryStrategy.valueOf(request.getQueryStrategy()),
                 RpcTemporalBias.Bias.valueOf(request.getTemporalBias().getBias().name()),
+                NsfwFilterTier.fromCodedValue(request.getNsfwFilterTierValue()),
                 request.getPagination().getPage()
         );
     }
@@ -327,6 +329,7 @@ public class QueryProtobufCodec {
                 .setRank(IndexProtobufCodec.convertSpecLimit(params.rank()))
                 .setSearchSetIdentifier(params.identifier())
                 .setQueryStrategy(params.queryStrategy().name())
+                .setNsfwFilterTierValue(params.filterTier().getCodedValue())
                 .setTemporalBias(RpcTemporalBias.newBuilder()
                         .setBias(RpcTemporalBias.Bias.valueOf(params.temporalBias().name()))
                         .build())

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

@@ -0,0 +1,26 @@
+package nu.marginalia.api.searchquery.model.query;
+
+public enum NsfwFilterTier {
+    OFF(0),
+    DANGER(1),
+    PORN_AND_GAMBLING(2);
+
+    private final int codedValue; // same as ordinal() for now, but can be changed later if needed
+
+    NsfwFilterTier(int codedValue) {
+        this.codedValue = codedValue;
+    }
+
+    public static NsfwFilterTier fromCodedValue(int codedValue) {
+        for (NsfwFilterTier tier : NsfwFilterTier.values()) {
+            if (tier.codedValue == codedValue) {
+                return tier;
+            }
+        }
+        throw new IllegalArgumentException("Invalid coded value for NsfwFilterTirer: " + codedValue);
+    }
+
+    public int getCodedValue() {
+        return codedValue;
+    }
+}

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

@@ -25,10 +25,11 @@ public record QueryParams(
         String identifier,
         QueryStrategy queryStrategy,
         RpcTemporalBias.Bias temporalBias,
+        NsfwFilterTier filterTier,
         int page
 )
 {
-    public QueryParams(String query, RpcQueryLimits limits, String identifier) {
+    public QueryParams(String query, RpcQueryLimits limits, String identifier, NsfwFilterTier filterTier) {
         this(query, null,
                 List.of(),
                 List.of(),
@@ -43,6 +44,7 @@ public record QueryParams(
                 identifier,
                 QueryStrategy.AUTO,
                 RpcTemporalBias.Bias.NONE,
+                filterTier,
                 1 // page
                 );
     }

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

@@ -1,6 +1,7 @@
 package nu.marginalia.api.searchquery.model.results;
 
 import nu.marginalia.api.searchquery.model.results.debug.ResultRankingDetails;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import org.jetbrains.annotations.NotNull;
 
@@ -161,4 +162,14 @@ public class DecoratedSearchResultItem implements Comparable<DecoratedSearchResu
     public String toString() {
         return "DecoratedSearchResultItem(rawIndexResult=" + this.getRawIndexResult() + ", url=" + this.getUrl() + ", title=" + this.getTitle() + ", description=" + this.getDescription() + ", urlQuality=" + this.getUrlQuality() + ", format=" + this.getFormat() + ", features=" + this.getFeatures() + ", pubYear=" + this.getPubYear() + ", dataHash=" + this.getDataHash() + ", wordsTotal=" + this.getWordsTotal() + ", bestPositions=" + this.getBestPositions() + ", rankingScore=" + this.getRankingScore() + ", resultsFromDomain=" + this.getResultsFromDomain() + ", rankingDetails=" + this.getRankingDetails() + ")";
     }
+
+    public String getShortFormat() {
+        try {
+            var df = DocumentFormat.valueOf(format);
+            return df.shortFormat;
+        }
+        catch (IllegalArgumentException e) {
+            return DocumentFormat.UNKNOWN.shortFormat;
+        }
+    }
 }

code/functions/search-query/api/src/main/protobuf/query-api.proto

@@ -32,6 +32,14 @@ message RpcQsQuery {
   RpcTemporalBias temporalBias = 16;
 
   RpcQsQueryPagination pagination = 17;
+
+  NSFW_FILTER_TIER nsfwFilterTier = 18;
+
+  enum NSFW_FILTER_TIER {
+    NONE = 0;
+    DANGER = 1;
+    PORN_AND_GAMBLING = 2;
+  };
 }
 
 /* Query service query response */
@@ -78,8 +86,17 @@ message RpcIndexQuery {
   RpcQueryLimits queryLimits = 10;
   string queryStrategy = 11;      // Named query configuration
   RpcResultRankingParameters parameters = 12;
+
+  NSFW_FILTER_TIER nsfwFilterTier = 13;
+
+  enum NSFW_FILTER_TIER {
+    NONE = 0;
+    DANGER = 1;
+    PORN_AND_GAMBLING = 2;
+  };
 }
 
+
 /* A tagged union encoding some limit on a field */
 message RpcSpecLimit {
   int32 value = 1;

code/functions/search-query/build.gradle

@@ -19,6 +19,7 @@ dependencies {
     implementation project(':code:common:model')
     implementation project(':code:common:service')
 
+    implementation project(':code:functions:nsfw-domain-filter')
     implementation project(':code:functions:search-query:api')
 
     implementation project(':code:index:query')

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

@@ -11,6 +11,7 @@ import nu.marginalia.api.searchquery.model.query.QueryParams;
 import nu.marginalia.api.searchquery.model.results.DecoratedSearchResultItem;
 import nu.marginalia.api.searchquery.model.results.PrototypeRankingParameters;
 import nu.marginalia.index.api.IndexClient;
+import nu.marginalia.nsfw.NsfwDomainFilter;
 import nu.marginalia.service.server.DiscoverableService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -34,13 +35,16 @@ public class QueryGRPCService
 
 
     private final QueryFactory queryFactory;
+    private final NsfwDomainFilter nsfwDomainFilter;
     private final IndexClient indexClient;
 
     @Inject
     public QueryGRPCService(QueryFactory queryFactory,
+                            NsfwDomainFilter nsfwDomainFilter,
                             IndexClient indexClient)
     {
         this.queryFactory = queryFactory;
+        this.nsfwDomainFilter = nsfwDomainFilter;
         this.indexClient = indexClient;
     }
 

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

@@ -3,6 +3,7 @@ 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.NsfwFilterTier;
 import nu.marginalia.api.searchquery.model.query.QueryParams;
 import nu.marginalia.api.searchquery.model.query.SearchSpecification;
 import nu.marginalia.functions.searchquery.QueryFactory;
@@ -58,6 +59,7 @@ public class QueryFactoryTest {
                         "NONE",
                         QueryStrategy.AUTO,
                         RpcTemporalBias.Bias.NONE,
+                        NsfwFilterTier.OFF,
                         0), null).specs;
     }
 

code/index/api/build.gradle

@@ -17,6 +17,7 @@ dependencies {
     implementation project(':code:common:service')
     implementation project(':code:common:db')
     implementation project(':code:libraries:message-queue')
+    implementation project(':code:functions:nsfw-domain-filter')
     implementation project(':code:functions:search-query:api')
 
     implementation libs.bundles.slf4j

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

@@ -2,11 +2,13 @@ package nu.marginalia.index.api;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
+import io.prometheus.client.Counter;
 import nu.marginalia.api.searchquery.IndexApiGrpc;
 import nu.marginalia.api.searchquery.RpcDecoratedResultItem;
 import nu.marginalia.api.searchquery.RpcIndexQuery;
 import nu.marginalia.db.DomainBlacklistImpl;
 import nu.marginalia.model.id.UrlIdCodec;
+import nu.marginalia.nsfw.NsfwDomainFilter;
 import nu.marginalia.service.client.GrpcChannelPoolFactory;
 import nu.marginalia.service.client.GrpcMultiNodeChannelPool;
 import nu.marginalia.service.discovery.property.ServiceKey;
@@ -28,14 +30,26 @@ public class IndexClient {
     private static final Logger logger = LoggerFactory.getLogger(IndexClient.class);
     private final GrpcMultiNodeChannelPool<IndexApiGrpc.IndexApiBlockingStub> channelPool;
     private final DomainBlacklistImpl blacklist;
+    private final NsfwDomainFilter nsfwDomainFilter;
+
+    Counter wmsa_index_query_count = Counter.build()
+            .name("wmsa_nsfw_filter_result_count")
+            .labelNames("tier")
+            .help("Count of results filtered by NSFW tier")
+            .register();
+
     private static final ExecutorService executor = Executors.newCachedThreadPool();
 
     @Inject
-    public IndexClient(GrpcChannelPoolFactory channelPoolFactory, DomainBlacklistImpl blacklist) {
+    public IndexClient(GrpcChannelPoolFactory channelPoolFactory,
+                       DomainBlacklistImpl blacklist,
+                       NsfwDomainFilter nsfwDomainFilter
+                       ) {
         this.channelPool = channelPoolFactory.createMulti(
                 ServiceKey.forGrpcApi(IndexApiGrpc.class, ServicePartition.multi()),
                 IndexApiGrpc::newBlockingStub);
         this.blacklist = blacklist;
+        this.nsfwDomainFilter = nsfwDomainFilter;
     }
 
     private static final Comparator<RpcDecoratedResultItem> comparator =
@@ -52,7 +66,7 @@ public class IndexClient {
     public AggregateQueryResponse executeQueries(RpcIndexQuery indexRequest, Pagination pagination) {
 
         final int requestedMaxResults = indexRequest.getQueryLimits().getResultsTotal();
-
+        int filterTier = indexRequest.getNsfwFilterTierValue();
         AtomicInteger totalNumResults = new AtomicInteger(0);
 
         List<RpcDecoratedResultItem> results =
@@ -74,7 +88,7 @@ public class IndexClient {
                             }
                         })
                         .flatMap(List::stream)
-                        .filter(item -> !isBlacklisted(item))
+                        .filter(item -> !isBlacklisted(item, filterTier))
                         .sorted(comparator)
                         .skip(Math.max(0, (pagination.page - 1) * pagination.pageSize))
                         .limit(pagination.pageSize)
@@ -83,8 +97,23 @@ public class IndexClient {
         return new AggregateQueryResponse(results, pagination.page(), totalNumResults.get());
     }
 
-    private boolean isBlacklisted(RpcDecoratedResultItem item) {
+    static String[] tierNames = {
-        return blacklist.isBlacklisted(UrlIdCodec.getDomainId(item.getRawItem().getCombinedId()));
+            "OFF",
+            "DANGER",
+            "NSFW"
+    };
+
+    private boolean isBlacklisted(RpcDecoratedResultItem item, int filterTier) {
+        int domainId = UrlIdCodec.getDomainId(item.getRawItem().getCombinedId());
+
+        if (blacklist.isBlacklisted(domainId)) {
+            return true;
+        }
+        if (nsfwDomainFilter.isBlocked(domainId, filterTier)) {
+            wmsa_index_query_count.labels(tierNames[filterTier]).inc();
+            return true;
+        }
+        return false;
     }
 
 }

code/index/index-forward/java/nu/marginalia/index/forward/construction/ForwardIndexConverter.java

@@ -84,7 +84,7 @@ public class ForwardIndexConverter {
 
             LongArray docFileData = LongArrayFactory.mmapForWritingConfined(outputFileDocsData, ForwardIndexParameters.ENTRY_SIZE * docsFileId.size());
 
-            ByteBuffer workArea = ByteBuffer.allocate(65536);
+            ByteBuffer workArea = ByteBuffer.allocate(1024*1024*100);
             for (var instance : journal.pages()) {
                 try (var slopTable = new SlopTable(instance.baseDir(), instance.page()))
                 {

code/libraries/geo-ip/build.gradle

@@ -15,6 +15,10 @@ dependencies {
 
     implementation libs.bundles.slf4j
     implementation libs.opencsv
+    implementation libs.guava
+    implementation dependencies.create(libs.guice.get()) {
+        exclude group: 'com.google.guava'
+    }
 
     testImplementation libs.bundles.slf4j.test
     testImplementation libs.bundles.junit

code/libraries/geo-ip/java/nu/marginalia/geoip/GeoIpDictionary.java

@@ -1,5 +1,6 @@
 package nu.marginalia.geoip;
 
+import com.google.inject.Singleton;
 import nu.marginalia.WmsaHome;
 import nu.marginalia.geoip.sources.AsnMapping;
 import nu.marginalia.geoip.sources.AsnTable;
@@ -10,6 +11,7 @@ import org.slf4j.LoggerFactory;
 import java.net.InetAddress;
 import java.util.Optional;
 
+@Singleton
 public class GeoIpDictionary {
     private volatile IP2LocationMapping ip2locMapping = null;
     private volatile AsnTable asnTable = null;
@@ -76,7 +78,7 @@ public class GeoIpDictionary {
     }
 
     public Optional<AsnTable.AsnInfo> getAsnInfo(int ipAddress) {
-        if (null == asnTable) { // not loaded yet or failed to load
+        if (null == asnMapping || null == asnTable) { // not loaded yet or failed to load
             return Optional.empty();
         }
 

code/processes/converting-process/build.gradle

@@ -62,6 +62,7 @@ dependencies {
     implementation libs.jwarc
 
     implementation libs.jsoup
+    implementation libs.pdfbox
 
     implementation libs.guava
     implementation dependencies.create(libs.guice.get()) {

code/processes/converting-process/java/nu/marginalia/converting/model/ProcessedDocumentDetails.java

@@ -1,8 +1,8 @@
 package nu.marginalia.converting.model;
 
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.HtmlFeature;
-import nu.marginalia.model.html.HtmlStandard;
 import nu.marginalia.model.idx.DocumentMetadata;
 
 import javax.annotation.Nullable;
@@ -21,7 +21,7 @@ public class ProcessedDocumentDetails {
     public long hashCode;
 
     public Set<HtmlFeature> features;
-    public HtmlStandard standard;
+    public DocumentFormat format;
 
     public List<EdgeUrl> linksInternal;
     public List<EdgeUrl> linksExternal;
@@ -30,6 +30,6 @@ public class ProcessedDocumentDetails {
     public GeneratorType generator;
 
     public String toString() {
-        return "ProcessedDocumentDetails(title=" + this.title + ", description=" + this.description + ", pubYear=" + this.pubYear + ", length=" + this.length + ", quality=" + this.quality + ", hashCode=" + this.hashCode + ", features=" + this.features + ", standard=" + this.standard + ", linksInternal=" + this.linksInternal + ", linksExternal=" + this.linksExternal + ", metadata=" + this.metadata + ", generator=" + this.generator + ")";
+        return "ProcessedDocumentDetails(title=" + this.title + ", description=" + this.description + ", pubYear=" + this.pubYear + ", length=" + this.length + ", quality=" + this.quality + ", hashCode=" + this.hashCode + ", features=" + this.features + ", standard=" + this.format + ", linksInternal=" + this.linksInternal + ", linksExternal=" + this.linksExternal + ", metadata=" + this.metadata + ", generator=" + this.generator + ")";
     }
 }

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

@@ -7,6 +7,7 @@ import nu.marginalia.converting.model.DisqualifiedException;
 import nu.marginalia.converting.model.ProcessedDocument;
 import nu.marginalia.converting.processor.plugin.AbstractDocumentProcessorPlugin;
 import nu.marginalia.converting.processor.plugin.HtmlDocumentProcessorPlugin;
+import nu.marginalia.converting.processor.plugin.PdfDocumentProcessorPlugin;
 import nu.marginalia.converting.processor.plugin.PlainTextDocumentProcessorPlugin;
 import nu.marginalia.keyword.LinkTexts;
 import nu.marginalia.model.EdgeDomain;
@@ -33,7 +34,8 @@ public class DocumentProcessor {
     private static final Set<String> acceptedContentTypes = Set.of("application/xhtml+xml",
             "application/xhtml",
             "text/html",
-            "text/plain");
+            "text/plain",
+            "application/pdf");
 
 
     private final List<AbstractDocumentProcessorPlugin> processorPlugins = new ArrayList<>();
@@ -42,12 +44,14 @@ public class DocumentProcessor {
     @Inject
     public DocumentProcessor(HtmlDocumentProcessorPlugin htmlDocumentProcessorPlugin,
                              PlainTextDocumentProcessorPlugin plainTextDocumentProcessorPlugin,
+                             PdfDocumentProcessorPlugin pdfDocumentProcessorPlugin,
                              AnchorTextKeywords anchorTextKeywords)
     {
         this.anchorTextKeywords = anchorTextKeywords;
 
         processorPlugins.add(htmlDocumentProcessorPlugin);
         processorPlugins.add(plainTextDocumentProcessorPlugin);
+        processorPlugins.add(pdfDocumentProcessorPlugin);
     }
 
     public ProcessedDocument process(CrawledDocument crawledDocument,

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

@@ -2,9 +2,9 @@ package nu.marginalia.converting.processor.logic;
 
 import crawlercommons.utils.Strings;
 import nu.marginalia.converting.model.DisqualifiedException;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.crawl.HtmlFeature;
 import nu.marginalia.model.crawldata.CrawledDocument;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jetbrains.annotations.NotNull;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
@@ -17,7 +17,7 @@ import java.util.Set;
 public class DocumentValuator {
 
     public double getQuality(CrawledDocument crawledDocument,
-                             HtmlStandard htmlStandard,
+                             DocumentFormat htmlStandard,
                              Document parsedDocument,
                              int textLength) throws DisqualifiedException {
 

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

@@ -1,7 +1,7 @@
 package nu.marginalia.converting.processor.logic;
 
 import com.google.common.base.Strings;
-import nu.marginalia.model.html.HtmlStandard;
+import nu.marginalia.model.DocumentFormat;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.DocumentType;
 import org.slf4j.Logger;
@@ -12,54 +12,54 @@ public class HtmlStandardExtractor {
 
     private static final Logger logger = LoggerFactory.getLogger(HtmlStandardExtractor.class);
 
-    public static HtmlStandard parseDocType(DocumentType docType) {
+    public static DocumentFormat parseDocType(DocumentType docType) {
         if (null == docType) {
-            return HtmlStandard.UNKNOWN;
+            return DocumentFormat.UNKNOWN;
         }
 
         String publicId = docType.publicId();
         if (Strings.isNullOrEmpty(publicId))
-            return HtmlStandard.HTML5;
+            return DocumentFormat.HTML5;
 
         publicId = publicId.toUpperCase();
         if (publicId.startsWith("-//SOFTQUAD SOFTWARE//DTD") && publicId.contains("HTML 4")) {
-            return HtmlStandard.HTML4;
+            return DocumentFormat.HTML4;
         }
         if (publicId.startsWith("-//SOFTQUAD SOFTWARE//DTD") && publicId.contains("HTML 3")) {
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         }
         if (publicId.startsWith("-//INTERNET/RFC XXXX//EN"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//NETSCAPE COMM. CORP"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//SQ//DTD HTML 2"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//SOFTQUAD//DTD HTML 2"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//W3O//DTD W3 HTML 2"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//IETF//DTD HTML 2"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//IETF//DTD HTML//EN"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-/W3C//DTD HTML 3"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-/W3C/DTD HTML 3"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//IETF//DTD HTML 3"))
-            return HtmlStandard.HTML123;
+            return DocumentFormat.HTML123;
         if (publicId.startsWith("-//W3C//DTD XHTML"))
-            return HtmlStandard.XHTML;
+            return DocumentFormat.XHTML;
         if (publicId.startsWith("ISO/IEC 15445:2000//DTD"))
-            return HtmlStandard.XHTML;
+            return DocumentFormat.XHTML;
         if (publicId.startsWith("-//W3C//DTD HTML"))
-            return HtmlStandard.HTML4;
+            return DocumentFormat.HTML4;
 
         logger.debug("Unknown publicID standard {}", publicId);
-        return HtmlStandard.UNKNOWN;
+        return DocumentFormat.UNKNOWN;
     }
 
-    public static HtmlStandard sniffHtmlStandard(Document parsed) {
+    public static DocumentFormat sniffHtmlStandard(Document parsed) {
         int html4Attributes = 0;
         int html5Attributes = 0;
 
@@ -73,11 +73,11 @@ public class HtmlStandardExtractor {
             html4Attributes++;
         }
         if (html5Attributes > 0) {
-            return HtmlStandard.HTML5;
+            return DocumentFormat.HTML5;
         }
         if (html4Attributes > 0) {
-            return HtmlStandard.HTML4;
+            return DocumentFormat.HTML4;
         }
-        return HtmlStandard.HTML123;
+        return DocumentFormat.HTML123;
     }
 }

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

@@ -7,11 +7,11 @@ import nu.marginalia.keyword.LinkTexts;
 import nu.marginalia.keyword.model.DocumentKeywordsBuilder;
 import nu.marginalia.language.filter.LanguageFilter;
 import nu.marginalia.language.model.DocumentLanguageData;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.HtmlFeature;
 import nu.marginalia.model.crawl.PubDate;
 import nu.marginalia.model.crawldata.CrawledDocument;
-import nu.marginalia.model.html.HtmlStandard;
 
 import javax.annotation.Nullable;
 import java.io.IOException;
@@ -73,7 +73,7 @@ public abstract class AbstractDocumentProcessorPlugin {
             return this;
         }
 
-        public MetaTagsBuilder addFormat(HtmlStandard standard) {
+        public MetaTagsBuilder addFormat(DocumentFormat standard) {
 
             add("format", standard);
 

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

@@ -25,12 +25,12 @@ import nu.marginalia.language.model.DocumentLanguageData;
 import nu.marginalia.language.sentence.ThreadLocalSentenceExtractorProvider;
 import nu.marginalia.link_parser.FeedExtractor;
 import nu.marginalia.link_parser.LinkParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.HtmlFeature;
 import nu.marginalia.model.crawl.PubDate;
 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.nodes.Document;
@@ -137,8 +137,8 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
 
 
         final int length = getLength(doc);
-        final HtmlStandard standard = getHtmlStandard(doc);
+        final DocumentFormat format = getDocumentFormat(doc);
-        final double quality = documentValuator.getQuality(crawledDocument, standard, doc, length);
+        final double quality = documentValuator.getQuality(crawledDocument, format, doc, length);
 
         if (isDisqualified(documentClass, url, quality, doc.title())) {
             throw new DisqualifiedException(DisqualificationReason.QUALITY);
@@ -152,7 +152,7 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
         var ret = new ProcessedDocumentDetails();
 
         ret.length = length;
-        ret.standard = standard;
+        ret.format = format;
         ret.title = specialization.getTitle(doc, dld, crawledDocument.url);
 
         final Set<HtmlFeature> features = featureExtractor.getFeatures(url, doc, documentHeaders, dld);
@@ -161,7 +161,7 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
         ret.quality = documentValuator.adjustQuality(quality, features);
         ret.hashCode = dld.localitySensitiveHashCode();
 
-        PubDate pubDate = pubDateSniffer.getPubDate(documentHeaders, url, doc, standard, true);
+        PubDate pubDate = pubDateSniffer.getPubDate(documentHeaders, url, doc, format, true);
 
         EnumSet<DocumentFlags> documentFlags = documentFlags(features, generatorParts.type());
 
@@ -180,7 +180,7 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
                 .addPubDate(pubDate)
                 .addUrl(url)
                 .addFeatures(features)
-                .addFormat(standard)
+                .addFormat(format)
                 .addGenerator(generatorParts.keywords())
                 .build();
 
@@ -316,12 +316,12 @@ public class HtmlDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin
         return linkTerms;
     }
 
-    private HtmlStandard getHtmlStandard(Document doc) {
+    private DocumentFormat getDocumentFormat(Document doc) {
-        HtmlStandard htmlStandard = HtmlStandardExtractor.parseDocType(doc.documentType());
+        DocumentFormat format = HtmlStandardExtractor.parseDocType(doc.documentType());
-        if (HtmlStandard.UNKNOWN.equals(htmlStandard)) {
+        if (DocumentFormat.UNKNOWN.equals(format)) {
             return HtmlStandardExtractor.sniffHtmlStandard(doc);
         }
-        return htmlStandard;
+        return format;
     }
 
     private int getLength(Document doc) {

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

@@ -0,0 +1,286 @@
+package nu.marginalia.converting.processor.plugin;
+
+import com.google.inject.Inject;
+import com.google.inject.name.Named;
+import nu.marginalia.converting.model.DisqualifiedException;
+import nu.marginalia.converting.model.ProcessedDocumentDetails;
+import nu.marginalia.converting.processor.DocumentClass;
+import nu.marginalia.converting.processor.logic.DocumentLengthLogic;
+import nu.marginalia.converting.processor.plugin.specialization.DefaultSpecialization;
+import nu.marginalia.keyword.DocumentKeywordExtractor;
+import nu.marginalia.keyword.LinkTexts;
+import nu.marginalia.keyword.model.DocumentKeywordsBuilder;
+import nu.marginalia.language.filter.LanguageFilter;
+import nu.marginalia.language.model.DocumentLanguageData;
+import nu.marginalia.language.sentence.ThreadLocalSentenceExtractorProvider;
+import nu.marginalia.model.DocumentFormat;
+import nu.marginalia.model.EdgeUrl;
+import nu.marginalia.model.crawl.HtmlFeature;
+import nu.marginalia.model.crawl.PubDate;
+import nu.marginalia.model.crawldata.CrawledDocument;
+import nu.marginalia.model.idx.DocumentFlags;
+import nu.marginalia.model.idx.DocumentMetadata;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.text.HeadingAwarePDFTextStripper;
+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.time.LocalDate;
+import java.util.*;
+
+
+public class PdfDocumentProcessorPlugin extends AbstractDocumentProcessorPlugin {
+
+    private final int maxTitleLength;
+    private final DocumentKeywordExtractor keywordExtractor;
+    private final ThreadLocalSentenceExtractorProvider sentenceExtractorProvider;
+    private final DocumentLengthLogic documentLengthLogic;
+    private final DefaultSpecialization defaultSpecialization;
+
+    private static final Logger logger = LoggerFactory.getLogger(PdfDocumentProcessorPlugin.class);
+
+    @Inject
+    public PdfDocumentProcessorPlugin(@Named("max-title-length") Integer maxTitleLength,
+                                      LanguageFilter languageFilter,
+                                      ThreadLocalSentenceExtractorProvider sentenceExtractorProvider,
+                                      DocumentKeywordExtractor keywordExtractor,
+                                      DocumentLengthLogic documentLengthLogic,
+                                      DefaultSpecialization defaultSpecialization)
+
+    {
+        super(languageFilter);
+        this.sentenceExtractorProvider = sentenceExtractorProvider;
+        this.documentLengthLogic = documentLengthLogic;
+        this.maxTitleLength = maxTitleLength;
+        this.keywordExtractor = keywordExtractor;
+        this.defaultSpecialization = defaultSpecialization;
+    }
+
+    @Override
+    public boolean isApplicable(CrawledDocument doc) {
+        String contentType = doc.contentType.toLowerCase();
+
+        if (contentType.equals("application/pdf"))
+            return true;
+        if (contentType.startsWith("application/pdf;")) // charset=blabla
+            return true;
+
+        return false;
+    }
+
+    @Override
+    public DetailsWithWords createDetails(CrawledDocument crawledDocument,
+                                          LinkTexts linkTexts,
+                                          DocumentClass documentClass)
+            throws DisqualifiedException, URISyntaxException, IOException {
+
+        String documentBody = crawledDocument.documentBody();
+
+        if (languageFilter.isBlockedUnicodeRange(documentBody)) {
+            throw new DisqualifiedException(DisqualifiedException.DisqualificationReason.LANGUAGE);
+        }
+
+        final EdgeUrl url = new EdgeUrl(crawledDocument.url);
+
+
+        Document doc;
+        try {
+            doc = convertPdfToHtml(crawledDocument.documentBodyBytes);
+        } catch (IOException e) {
+            logger.error("Failed to convert PDF file {} - {}", url, e.getMessage());
+            throw new DisqualifiedException(DisqualifiedException.DisqualificationReason.ERROR);
+        }
+
+        DocumentLanguageData dld = sentenceExtractorProvider.get().extractSentences(doc);
+
+        checkDocumentLanguage(dld);
+
+        documentLengthLogic.validateLength(dld, 1.0);
+
+        var ret = new ProcessedDocumentDetails();
+
+        ret.length = documentBody.length();
+
+        ret.format = DocumentFormat.PDF;
+        ret.title = StringUtils.truncate(defaultSpecialization.getTitle(doc, dld, url.toString()), maxTitleLength);
+
+        ret.quality = -5;
+
+        ret.features = Set.of(HtmlFeature.PDF);
+        ret.description = getDescription(doc);
+        ret.hashCode = dld.localitySensitiveHashCode();
+
+        final PubDate pubDate = new PubDate(LocalDate.ofYearDay(1993, 1));
+
+        EnumSet<DocumentFlags> documentFlags = EnumSet.of(DocumentFlags.PdfFile);
+
+        ret.metadata = new DocumentMetadata(
+                documentLengthLogic.getEncodedAverageLength(dld),
+                pubDate.yearByte(),
+                (int) -ret.quality,
+                documentFlags);
+
+        DocumentKeywordsBuilder words = keywordExtractor.extractKeywords(dld, linkTexts, url);
+
+        var tagWords = new MetaTagsBuilder()
+                .addPubDate(pubDate)
+                .addUrl(url)
+                .addFeatures(ret.features)
+                .addFormat(ret.format)
+                .build();
+
+        words.addAllSyntheticTerms(tagWords);
+
+        if (pubDate.hasYear()) {
+            ret.pubYear = pubDate.year();
+        }
+
+        /* These are assumed to be populated */
+        ret.linksInternal = new ArrayList<>();
+        ret.linksExternal = new ArrayList<>();
+
+        return new DetailsWithWords(ret, words);
+    }
+
+    private String getDescription(Document doc) {
+        int cnt = 0;
+        boolean useNext = false;
+        for (var ptag : doc.getElementsByTag("p")) {
+            String text = ptag.text();
+
+            // Many academic documents have an abstract at the start of the document,
+            // which makes a nice summary.  Though they tend to bleed into the text,
+            // so we check for the word "Abstract" at the start of the paragraph.
+
+            if (text.startsWith("Abstract ")) {
+                return StringUtils.abbreviate(text.substring("Abstract ".length()), "...", 255);
+            }
+            else if (text.equals("Abstract")) {
+                useNext = true;
+            }
+            else if (useNext) {
+                return StringUtils.abbreviate(text, "...", 255);
+            }
+
+            if (++cnt > 15) { // Don't scan the entire document
+                break;
+            }
+        }
+
+        // Fall back to the default specialization
+        return defaultSpecialization.getSummary(doc, Set.of());
+
+    }
+
+    /** Convert the provided PDF bytes into a HTML rendering that can be fed
+     * to the HTML processor.
+     */
+    Document convertPdfToHtml(byte[] pdfBytes) throws IOException {
+        try (var doc = Loader.loadPDF(pdfBytes)) {
+            String docMetaTitle = Objects.requireNonNullElse(doc.getDocumentInformation().getTitle(), "");
+
+            var stripper = new HeadingAwarePDFTextStripper();
+            stripper.setStartPage(1);
+            stripper.setSortByPosition(true);
+            stripper.setWordSeparator(" ");
+
+            // Increase the tolerance for line spacing to deal better with paragraphs.
+            stripper.setDropThreshold(5f);
+
+            stripper.setPageStart("<div>");
+            stripper.setParagraphStart("<p>");
+            stripper.setParagraphEnd("</p>\n");
+            stripper.setPageEnd("</div>\n");
+            stripper.setHeadingStart("<h1>");
+            stripper.setHeadingEnd("</h1>\n");
+            stripper.setLineSeparator("\n");
+
+            String text = stripper.getText(doc);
+
+            StringBuilder htmlBuilder = new StringBuilder(text.length() + 1024);
+            htmlBuilder.append("<html><body>")
+                    .append(text)
+                    .append("</body></html>");
+
+            var parsed = Jsoup.parse(htmlBuilder.toString());
+
+            repairDOM(parsed);
+
+            for (var heading : parsed.getElementsByTag("h1")) {
+                String headingText = heading.text();
+                if (headingText.length() > 2) {
+                    parsed.title(headingText);
+                    break;
+                }
+            }
+
+
+            if (parsed.title().isEmpty()) {
+                // Prefer setting the title to the first paragraph in the
+                // document, as this is almost always correct.  Otherwise,
+                // we fall back on the metadata title, which is almost always
+                // useless
+
+                var firstP = parsed.getElementsByTag("p").first();
+                if (firstP != null) parsed.title(firstP.text());
+                else parsed.title(docMetaTitle);
+            }
+            return parsed;
+        }
+
+
+    }
+
+    /** Repair the DOM to remove some common issues with PDF conversion,
+     * including empty paragraphs, and multiline headers that are split into multiple
+     * conescutive h1 tags.
+     */
+    private void repairDOM(Document parsed) {
+
+        // <p><h1>...</h1></p> -> <h1>...</h1>
+        parsed.getElementsByTag("h1").forEach(h1 -> {
+            var parent = h1.parent();
+            if (parent == null || !"p".equals(parent.tagName())) {
+                return;
+            }
+
+            if (parent.childrenSize() == 1) {
+                parent.replaceWith(h1);
+            }
+        });
+
+        // Remove empty <p> tags
+        parsed.getElementsByTag("p").forEach(p -> {
+            if (p.childrenSize() == 0 && !p.hasText()) {
+                p.remove();
+            }
+        });
+
+        // <h1>...</h1><h1>...</h1> -> <h1>...</h1>
+        parsed.getElementsByTag("h1").forEach(h1 -> {
+            var nextSibling = h1.nextElementSibling();
+            if (nextSibling == null || !"h1".equals(nextSibling.tagName())) {
+                return; // Short-circuit to avoid unnecessary work
+            }
+
+            StringJoiner joiner = new StringJoiner(" ");
+            joiner.add(h1.text());
+
+            for (var sibling : h1.nextElementSiblings()) {
+                if (!"h1".equals(sibling.tagName()))
+                    break;
+                joiner.add(sibling.text());
+                sibling.remove();
+            }
+
+            h1.text(joiner.toString());
+        });
+
+    }
+
+}

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

@@ -13,10 +13,10 @@ import nu.marginalia.keyword.LinkTexts;
 import nu.marginalia.keyword.model.DocumentKeywordsBuilder;
 import nu.marginalia.language.filter.LanguageFilter;
 import nu.marginalia.language.sentence.ThreadLocalSentenceExtractorProvider;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
 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.apache.commons.lang3.StringUtils;
@@ -91,7 +91,7 @@ public class PlainTextDocumentProcessorPlugin extends AbstractDocumentProcessorP
 
         ret.length = documentBody.length();
 
-        ret.standard = HtmlStandard.PLAIN;
+        ret.format = DocumentFormat.PLAIN;
         ret.title = StringUtils.truncate(plainTextLogic.getTitle(url, firstFewLines), maxTitleLength);
 
         ret.quality = -1;
@@ -113,7 +113,7 @@ public class PlainTextDocumentProcessorPlugin extends AbstractDocumentProcessorP
                 .addPubDate(pubDate)
                 .addUrl(url)
                 .addFeatures(ret.features)
-                .addFormat(ret.standard)
+                .addFormat(ret.format)
                 .build();
 
         words.addAllSyntheticTerms(tagWords);

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/PubDateFromHtmlStandard.java

@@ -1,12 +1,13 @@
 package nu.marginalia.converting.processor.pubdate;
 
-import nu.marginalia.model.html.HtmlStandard;
+import nu.marginalia.model.DocumentFormat;
 
 public class PubDateFromHtmlStandard {
     /** Used to bias pub date heuristics */
-    public static int blindGuess(HtmlStandard standard) {
+    public static int blindGuess(DocumentFormat format) {
-        return switch (standard) {
+        return switch (format) {
             case PLAIN -> 1993;
+            case PDF -> 2010;
             case HTML123 -> 1997;
             case HTML4, XHTML -> 2006;
             case HTML5 -> 2018;
@@ -21,8 +22,8 @@ public class PubDateFromHtmlStandard {
      * Discovering publication year involves a lot of guesswork, this helps
      * keep the guesses relatively sane.
      */
-    public static boolean isGuessPlausible(HtmlStandard standard, int year) {
+    public static boolean isGuessPlausible(DocumentFormat format, int year) {
-        switch (standard) {
+        switch (format) {
             case HTML123:
                 return year <= 2000;
             case XHTML:

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/PubDateHeuristic.java

@@ -1,14 +1,14 @@
 package nu.marginalia.converting.processor.pubdate;
 
 import nu.marginalia.converting.model.DocumentHeaders;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
 
 public interface PubDateHeuristic {
 
-    Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard);
+    Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard);
 }

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/PubDateParser.java

@@ -1,7 +1,7 @@
 package nu.marginalia.converting.processor.pubdate;
 
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 
 import java.time.DateTimeException;
 import java.time.LocalDate;
@@ -26,7 +26,7 @@ public class PubDateParser {
                 .filter(PubDateParser::validateDate);
     }
 
-    public static Optional<PubDate> attemptParseDate(String date, HtmlStandard standard) {
+    public static Optional<PubDate> attemptParseDate(String date, DocumentFormat standard) {
         return Optional.ofNullable(date)
                 .filter(str -> str.length() >= 4 && str.length() < 32)
                 .flatMap(str ->
@@ -81,7 +81,7 @@ public class PubDateParser {
     }
 
 
-    public static Optional<PubDate> dateFromHighestYearLookingSubstringWithGuess(String maybe, HtmlStandard standard) {
+    public static Optional<PubDate> dateFromHighestYearLookingSubstringWithGuess(String maybe, DocumentFormat standard) {
         int guess = PubDateFromHtmlStandard.blindGuess(standard);
 
         var matcher = yearPattern.matcher(maybe);
@@ -135,7 +135,7 @@ public class PubDateParser {
         return (max + min) / 2;
     }
 
-    public static int guessYear(HtmlStandard standard) {
+    public static int guessYear(DocumentFormat standard) {
         // Create some jitter to avoid having documents piling up in the same four years
         // as this would make searching in those years disproportionately useless
 

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/PubDateSniffer.java

@@ -2,9 +2,9 @@ package nu.marginalia.converting.processor.pubdate;
 
 import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.heuristic.*;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.ArrayList;
@@ -38,7 +38,7 @@ public class PubDateSniffer {
         heuristics.add(new PubDateHeuristicGuessFromHtmlStandard());
     }
 
-    public PubDate getPubDate(DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard, boolean runExpensive) {
+    public PubDate getPubDate(DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard, boolean runExpensive) {
         final PubDateEffortLevel effortLevel = runExpensive ? PubDateEffortLevel.HIGH : PubDateEffortLevel.LOW;
 
         for (var heuristic : heuristics) {

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicDOMParsingPass1.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jetbrains.annotations.NotNull;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
@@ -19,7 +19,7 @@ import java.util.Optional;
 public class PubDateHeuristicDOMParsingPass1 implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         if (effortLevel == PubDateEffortLevel.LOW)
             return Optional.empty();
 
@@ -33,9 +33,9 @@ public class PubDateHeuristicDOMParsingPass1 implements PubDateHeuristic {
 
     private static class DateExtractingNodeVisitorPass implements NodeFilter {
         public PubDate pubDate;
-        private final HtmlStandard htmlStandard;
+        private final DocumentFormat htmlStandard;
 
-        private DateExtractingNodeVisitorPass(HtmlStandard htmlStandard) {
+        private DateExtractingNodeVisitorPass(DocumentFormat htmlStandard) {
             this.htmlStandard = htmlStandard;
         }
 
@@ -135,7 +135,7 @@ public class PubDateHeuristicDOMParsingPass1 implements PubDateHeuristic {
         }
 
         private void parse(String text) {
-            if (htmlStandard == HtmlStandard.UNKNOWN) {
+            if (htmlStandard == DocumentFormat.UNKNOWN) {
                 PubDateParser
                         .dateFromHighestYearLookingSubstring(text)
                         .ifPresent(this::setPubDate);

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicDOMParsingPass2.java

@@ -5,9 +5,9 @@ import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateFromHtmlStandard;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jetbrains.annotations.NotNull;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Node;
@@ -19,7 +19,7 @@ import java.util.Optional;
 public class PubDateHeuristicDOMParsingPass2 implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         if (effortLevel == PubDateEffortLevel.LOW)
             return Optional.empty();
 
@@ -33,9 +33,9 @@ public class PubDateHeuristicDOMParsingPass2 implements PubDateHeuristic {
 
     private static class DateExtractingNodeVisitor implements NodeFilter {
         public PubDate pubDate;
-        private final HtmlStandard htmlStandard;
+        private final DocumentFormat htmlStandard;
 
-        private DateExtractingNodeVisitor(HtmlStandard htmlStandard) {
+        private DateExtractingNodeVisitor(DocumentFormat htmlStandard) {
             this.htmlStandard = htmlStandard;
         }
 
@@ -73,7 +73,7 @@ public class PubDateHeuristicDOMParsingPass2 implements PubDateHeuristic {
         }
 
         private void parse(String text) {
-            if (htmlStandard == HtmlStandard.UNKNOWN) {
+            if (htmlStandard == DocumentFormat.UNKNOWN) {
                 PubDateParser
                         .dateFromHighestYearLookingSubstring(text)
                         .ifPresent(this::setPubDate);

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicGuessFromHtmlStandard.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,8 +14,8 @@ import java.util.Optional;
 public class PubDateHeuristicGuessFromHtmlStandard implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
-        if (htmlStandard == HtmlStandard.UNKNOWN)
+        if (htmlStandard == DocumentFormat.UNKNOWN)
             return Optional.empty();
 
         return Optional.of(new PubDate(null, PubDateParser.guessYear(htmlStandard)));

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicHtml5AnyTimeTag.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,7 +14,7 @@ import java.util.Optional;
 public class PubDateHeuristicHtml5AnyTimeTag implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         // HTML5, alternative approach
         for (var tag : document.select("time")) {
             var maybeDate = PubDateParser.attemptParseDate(tag.attr("datetime"));

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicHtml5ArticleDateTag.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,7 +14,7 @@ import java.util.Optional;
 public class PubDateHeuristicHtml5ArticleDateTag implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         // HTML5
         for (var tag : document.select("time[pubdate=\"pubdate\"]")) {
             var maybeDate = PubDateParser.attemptParseDate(tag.attr("datetime"));

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicHtml5ItempropDateTag.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,7 +14,7 @@ import java.util.Optional;
 public class PubDateHeuristicHtml5ItempropDateTag implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         for (var tag : document.select("time[itemprop=\"datePublished\"]")) {
             var maybeDate = PubDateParser.attemptParseDate(tag.attr("content"));
             if (maybeDate.isPresent()) {

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicJSONLD.java

@@ -8,9 +8,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Collections;
@@ -21,7 +21,7 @@ import java.util.Optional;
 public class PubDateHeuristicJSONLD implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         for (var tag : document.select("script[type=\"application/ld+json\"]")) {
             var maybeDate = parseLdJson(tag.data())
                     .flatMap(PubDateParser::attemptParseDate);

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicLastModified.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.List;
@@ -15,7 +15,7 @@ import java.util.Optional;
 public class PubDateHeuristicLastModified implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         List<String> lastModified = headers.get("last-modified");
         if (lastModified.isEmpty())
             return Optional.empty();

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicMicrodata.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,7 +14,7 @@ import java.util.Optional;
 public class PubDateHeuristicMicrodata implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
 
         for (var tag : document.select("meta[itemprop=\"datePublished\"]")) {
             var maybeDate = PubDateParser.attemptParseDate(tag.attr("content"));

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicOpenGraph.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,7 +14,7 @@ import java.util.Optional;
 public class PubDateHeuristicOpenGraph implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         // OG
         for (var tag : document.select("meta[property=\"article:published_time\"]")) {
             var maybeDate = PubDateParser.attemptParseDate(tag.attr("content"));

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicRDFaTag.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -14,7 +14,7 @@ import java.util.Optional;
 public class PubDateHeuristicRDFaTag implements PubDateHeuristic {
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         for (var tag : document.select("meta[property=\"datePublished\"]")) {
             var maybeDate = PubDateParser.attemptParseDate(tag.attr("content"));
             if (maybeDate.isPresent()) {

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicUrlPatternPass1.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -21,7 +21,7 @@ public class PubDateHeuristicUrlPatternPass1 implements PubDateHeuristic {
     private static final int MIN_URL_PATTERN_YEAR = 2000;
 
     @Override
-    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, HtmlStandard htmlStandard) {
+    public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url, Document document, DocumentFormat htmlStandard) {
         final String urlString = url.path;
 
         var matcher = yearUrlPattern.matcher(urlString);

code/processes/converting-process/java/nu/marginalia/converting/processor/pubdate/heuristic/PubDateHeuristicUrlPatternPass2.java

@@ -4,9 +4,9 @@ import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.PubDateEffortLevel;
 import nu.marginalia.converting.processor.pubdate.PubDateHeuristic;
 import nu.marginalia.converting.processor.pubdate.PubDateParser;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.PubDate;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.nodes.Document;
 
 import java.util.Optional;
@@ -19,7 +19,7 @@ public class PubDateHeuristicUrlPatternPass2 implements PubDateHeuristic {
 
     @Override
     public Optional<PubDate> apply(PubDateEffortLevel effortLevel, DocumentHeaders headers, EdgeUrl url,
-                                   Document document, HtmlStandard htmlStandard) {
+                                   Document document, DocumentFormat htmlStandard) {
         final String urlString = url.path;
 
         var matcher = yearUrlPattern.matcher(urlString);

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

@@ -8,12 +8,12 @@ import nu.marginalia.converting.model.ProcessedDocument;
 import nu.marginalia.converting.processor.DocumentClass;
 import nu.marginalia.converting.processor.plugin.HtmlDocumentProcessorPlugin;
 import nu.marginalia.keyword.LinkTexts;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.HtmlFeature;
 import nu.marginalia.model.crawl.PubDate;
 import nu.marginalia.model.crawl.UrlIndexingState;
 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 nu.marginalia.model.idx.WordFlags;
@@ -53,6 +53,7 @@ public class SideloaderProcessing {
                 "",
                 body.getBytes(StandardCharsets.UTF_8),
                 false,
+                -1,
                 null,
                 null
         );
@@ -83,7 +84,7 @@ public class SideloaderProcessing {
             // that we can't get from the sideloaded data since it's
             // so stripped down
 
-            ret.details.standard = HtmlStandard.HTML5;
+            ret.details.format = DocumentFormat.HTML5;
             ret.details.pubYear = pubYear;
             ret.details.features.add(HtmlFeature.JS);
             ret.details.features.add(HtmlFeature.TRACKING);

code/processes/converting-process/java/nu/marginalia/converting/sideload/stackexchange/StackexchangeSideloader.java

@@ -9,13 +9,13 @@ import nu.marginalia.integration.stackexchange.sqlite.StackExchangePostsDb;
 import nu.marginalia.keyword.DocumentKeywordExtractor;
 import nu.marginalia.keyword.LinkTexts;
 import nu.marginalia.language.sentence.ThreadLocalSentenceExtractorProvider;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.EdgeUrl;
 import nu.marginalia.model.crawl.DomainIndexingState;
 import nu.marginalia.model.crawl.HtmlFeature;
 import nu.marginalia.model.crawl.PubDate;
 import nu.marginalia.model.crawl.UrlIndexingState;
-import nu.marginalia.model.html.HtmlStandard;
 import nu.marginalia.model.idx.DocumentFlags;
 import nu.marginalia.model.idx.DocumentMetadata;
 import nu.marginalia.model.idx.WordFlags;
@@ -165,7 +165,7 @@ public class StackexchangeSideloader implements SideloadSource {
             ret.details.description = StringUtils.truncate(doc.body().text(), 255);
             ret.details.length = 128;
 
-            ret.details.standard = HtmlStandard.HTML5;
+            ret.details.format = DocumentFormat.HTML5;
             ret.details.linksExternal = List.of();
             ret.details.linksInternal = List.of();
             ret.state = UrlIndexingState.OK;

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

@@ -124,7 +124,7 @@ public class ConverterBatchWriter implements AutoCloseable, ConverterBatchWriter
                     document.details.title,
                     document.details.description,
                     HtmlFeature.encode(document.details.features),
-                    document.details.standard.name(),
+                    document.details.format.name(),
                     document.details.length,
                     document.details.hashCode,
                     (float) document.details.quality,

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

@@ -6,6 +6,7 @@ import com.google.inject.Injector;
 import nu.marginalia.converting.model.ProcessedDocument;
 import nu.marginalia.converting.processor.DomainProcessor;
 import nu.marginalia.io.SerializableCrawlDataStream;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeDomain;
 import nu.marginalia.model.crawl.DomainIndexingState;
 import nu.marginalia.model.crawl.PubDate;
@@ -13,7 +14,6 @@ import nu.marginalia.model.crawl.UrlIndexingState;
 import nu.marginalia.model.crawldata.CrawledDocument;
 import nu.marginalia.model.crawldata.CrawledDomain;
 import nu.marginalia.model.crawldata.SerializableCrawlData;
-import nu.marginalia.model.html.HtmlStandard;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
@@ -91,7 +91,7 @@ public class ConvertingIntegrationTest {
 
             assertTrue(details.title.length() > 4);
             assertTrue(details.description.length() > 4);
-            assertEquals(HtmlStandard.HTML5, details.standard);
+            assertEquals(DocumentFormat.HTML5, details.format);
 
         }
     }
@@ -125,7 +125,7 @@ public class ConvertingIntegrationTest {
             assertTrue(details.metadata.size() > 0);
             assertTrue(details.title.length() > 4);
             assertTrue(details.description.length() > 4);
-            assertEquals(HtmlStandard.HTML5, details.standard);
+            assertEquals(DocumentFormat.HTML5, details.format);
         }
     }
 
@@ -148,6 +148,7 @@ public class ConvertingIntegrationTest {
                     "",
                     readClassPathFile(p.toString()).getBytes(),
                     false,
+                    -1,
                     null,
                     null
                     );

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

@@ -0,0 +1,95 @@
+package nu.marginalia.converting.processor.plugin;
+
+import nu.marginalia.WmsaHome;
+import nu.marginalia.converting.processor.DocumentClass;
+import nu.marginalia.converting.processor.logic.DocumentLengthLogic;
+import nu.marginalia.converting.processor.logic.TitleExtractor;
+import nu.marginalia.converting.processor.plugin.specialization.DefaultSpecialization;
+import nu.marginalia.converting.processor.summary.SummaryExtractor;
+import nu.marginalia.converting.processor.summary.heuristic.*;
+import nu.marginalia.keyword.DocumentKeywordExtractor;
+import nu.marginalia.keyword.LinkTexts;
+import nu.marginalia.language.filter.LanguageFilter;
+import nu.marginalia.language.sentence.ThreadLocalSentenceExtractorProvider;
+import nu.marginalia.model.crawldata.CrawledDocument;
+import nu.marginalia.term_frequency_dict.TermFrequencyDict;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.Instant;
+
+@Tag("flaky")
+class PdfDocumentProcessorPluginTest {
+    static PdfDocumentProcessorPlugin plugin;
+
+    @BeforeAll
+    static void setUpBeforeClass() throws Exception {
+        var lm = WmsaHome.getLanguageModels();
+        plugin = new PdfDocumentProcessorPlugin(255,
+                new LanguageFilter(lm),
+                new ThreadLocalSentenceExtractorProvider(lm),
+                new DocumentKeywordExtractor(new TermFrequencyDict(lm)),
+                new DocumentLengthLogic(100),
+                new DefaultSpecialization(new SummaryExtractor(
+                        255,
+                        new DomFilterHeuristic(255),
+                        new TagDensityHeuristic(255),
+                        new OpenGraphDescriptionHeuristic(),
+                        new MetaDescriptionHeuristic(),
+                        new FallbackHeuristic()
+                ),
+                        new TitleExtractor(255)
+                        ));
+    }
+    public AbstractDocumentProcessorPlugin.DetailsWithWords testPdfFile(byte[] pdfBytes) throws Exception {
+        var doc = new CrawledDocument("test", "https://www.example.com/sample.pdf", "application/pdf", Instant.now().toString(), 200, "OK", "OK", "", pdfBytes, false, -1, null, null);
+        return plugin.createDetails(doc, new LinkTexts(), DocumentClass.NORMAL);
+    }
+
+    public AbstractDocumentProcessorPlugin.DetailsWithWords testPdfFile(Path file) throws Exception {
+        return testPdfFile(Files.readAllBytes(file));
+    }
+
+    private byte[] downloadPDF(String url) throws IOException, URISyntaxException {
+        HttpURLConnection conn = (HttpURLConnection) new URI(url).toURL().openConnection();
+        try {
+            return conn.getInputStream().readAllBytes();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        } finally {
+            conn.disconnect();
+        }
+    }
+
+
+    @Disabled
+    @Test
+    void testingTool() throws Exception {
+        System.out.println(testPdfFile(Path.of("/home/st_work/Work/sample.pdf")).details().title);
+        System.out.println(testPdfFile(Path.of("/home/st_work/Work/sample2.pdf")).details().title);
+        System.out.println(testPdfFile(Path.of("/home/st_work/Work/sample3.pdf")).details().title);
+        System.out.println(testPdfFile(Path.of("/home/st_work/Work/sample4.pdf")).details().title);
+        System.out.println(testPdfFile(Path.of("/home/st_work/Work/sample5.pdf")).details().title);
+        System.out.println(testPdfFile(Path.of("/home/st_work/Work/sample6.pdf")).details().title);
+    }
+
+    @Disabled
+    @Test
+    void testingTool2() throws Exception {
+        System.out.println(plugin.convertPdfToHtml(Files.readAllBytes(Path.of("/home/st_work/Work/sample6.pdf"))));
+    }
+
+    @Test
+    void testMarginaliaSample() throws Exception {
+        var doc = plugin.convertPdfToHtml(downloadPDF("https://www.marginalia.nu/junk/test.pdf"));
+        System.out.println(doc.html());
+    }
+}

code/processes/converting-process/test/nu/marginalia/converting/processor/pubdate/PubDateSnifferTest.java

@@ -3,8 +3,8 @@ package nu.marginalia.converting.processor.pubdate;
 import nu.marginalia.WmsaHome;
 import nu.marginalia.converting.model.DocumentHeaders;
 import nu.marginalia.converting.processor.pubdate.heuristic.PubDateHeuristicDOMParsingPass2;
+import nu.marginalia.model.DocumentFormat;
 import nu.marginalia.model.EdgeUrl;
-import nu.marginalia.model.html.HtmlStandard;
 import org.jsoup.Jsoup;
 import org.junit.jupiter.api.Test;
 
@@ -74,7 +74,7 @@ class PubDateSnifferTest {
                         <time pubdate="pubdate" datetime="2022-08-24">time</time>
                         Wow, sure lor 'em boss
                         </article>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2022-08-24", ret.dateIso8601());
@@ -90,7 +90,7 @@ class PubDateSnifferTest {
                         <time>2022-08-24</time>
                         Wow, sure lor 'em boss
                         </article>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2022-08-24", ret.dateIso8601());
@@ -106,7 +106,7 @@ class PubDateSnifferTest {
                         <time class="published" datetime="July 13, 2006">July 13, 2006</time>
                         Wow, sure lor 'em boss
                         </article>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals(2006, ret.year());
@@ -116,14 +116,14 @@ class PubDateSnifferTest {
     public void testProblemCases() throws IOException, URISyntaxException {
         var ret = dateSniffer.getPubDate(new DocumentHeaders(""),
                 new EdgeUrl("https://www.example.com/"),
-                Jsoup.parse(Files.readString(WmsaHome.getHomePath().resolve("test-data/The Switch to Linux Begins .html"))), HtmlStandard.HTML5, true);
+                Jsoup.parse(Files.readString(WmsaHome.getHomePath().resolve("test-data/The Switch to Linux Begins .html"))), DocumentFormat.HTML5, true);
 
         assertFalse(ret.isEmpty());
         assertEquals(2006, ret.year());
 
         ret = dateSniffer.getPubDate(new DocumentHeaders(""),
                 new EdgeUrl("https://www.example.com/"),
-                Jsoup.parse(Files.readString(WmsaHome.getHomePath().resolve("test-data/Black Hat USA 2010 Understanding and Deploying DNSSEC by Paul Wouters and Patrick Nauber.html"))), HtmlStandard.XHTML, true);
+                Jsoup.parse(Files.readString(WmsaHome.getHomePath().resolve("test-data/Black Hat USA 2010 Understanding and Deploying DNSSEC by Paul Wouters and Patrick Nauber.html"))), DocumentFormat.XHTML, true);
 
         assertFalse(ret.isEmpty());
         assertEquals(2010, ret.year());
@@ -146,7 +146,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <meta itemprop="datePublished" content="2022-08-24" />
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2022-08-24", ret.dateIso8601());
@@ -160,7 +160,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <meta property="datePublished" content="2022-08-24" />
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2022-08-24", ret.dateIso8601());
@@ -174,7 +174,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <script type="application/ld+json">{"@context":"https:\\/\\/schema.org","@type":"Article","name":"In the Year 2525","url":"https:\\/\\/en.wikipedia.org\\/wiki\\/In_the_Year_2525","sameAs":"http:\\/\\/www.wikidata.org\\/entity\\/Q145269","mainEntity":"http:\\/\\/www.wikidata.org\\/entity\\/Q145269","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\\/\\/www.wikimedia.org\\/static\\/images\\/wmf-hor-googpub.png"}},"datePublished":"2004-08-24T14:39:14Z","dateModified":"2022-10-20T11:54:37Z","image":"https:\\/\\/upload.wikimedia.org\\/wikipedia\\/commons\\/4\\/4a\\/In_the_Year_2525_by_Zager_and_Evans_US_vinyl_Side-A_RCA_release.png","headline":"song written and compsoed by Rick Evans, originally recorded by Zager and Evans and released in 1969"}</script><script type="application/ld+json">{"@context":"https:\\/\\/schema.org","@type":"Article","name":"In the Year 2525","url":"https:\\/\\/en.wikipedia.org\\/wiki\\/In_the_Year_2525","sameAs":"http:\\/\\/www.wikidata.org\\/entity\\/Q145269","mainEntity":"http:\\/\\/www.wikidata.org\\/entity\\/Q145269","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\\/\\/www.wikimedia.org\\/static\\/images\\/wmf-hor-googpub.png"}},"datePublished":"2004-08-24T14:39:14Z","dateModified":"2022-10-20T11:54:37Z","image":"https:\\/\\/upload.wikimedia.org\\/wikipedia\\/commons\\/4\\/4a\\/In_the_Year_2525_by_Zager_and_Evans_US_vinyl_Side-A_RCA_release.png","headline":"song written and compsoed by Rick Evans, originally recorded by Zager and Evans and released in 1969"}</script>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2004-08-24", ret.dateIso8601());
@@ -188,7 +188,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <script type="application/ld+json" class="aioseop-schema">{"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://socialnomics.net/#organization","url":"https://socialnomics.net/","name":"Socialnomics","sameAs":[]},{"@type":"WebSite","@id":"https://socialnomics.net/#website","url":"https://socialnomics.net/","name":"Socialnomics","publisher":{"@id":"https://socialnomics.net/#organization"}},{"@type":"WebPage","@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/#webpage","url":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/","inLanguage":"en-US","name":"3 Reasons Why You Should Adopt Java-based Technology For Your Business","isPartOf":{"@id":"https://socialnomics.net/#website"},"breadcrumb":{"@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/#breadcrumblist"},"datePublished":"2016-12-27T21:01:36-06:00","dateModified":"2016-12-22T21:02:32-06:00"},{"@type":"Article","@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/#article","isPartOf":{"@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/#webpage"},"author":{"@id":"https://socialnomics.net/author/rahis-saifi/#author"},"headline":"3 Reasons Why You Should Adopt Java-based Technology For Your Business","datePublished":"2016-12-27T21:01:36-06:00","dateModified":"2016-12-22T21:02:32-06:00","commentCount":0,"mainEntityOfPage":{"@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/#webpage"},"publisher":{"@id":"https://socialnomics.net/#organization"},"articleSection":"Business, business, java, Java Developers, programming languages"},{"@type":"Person","@id":"https://socialnomics.net/author/rahis-saifi/#author","name":"Rahis Saifi","sameAs":["https://www.facebook.com/RahisSaifiOfficial","https://www.twitter.com/57rahis"],"image":{"@type":"ImageObject","@id":"https://socialnomics.net/#personlogo","url":"https://secure.gravatar.com/avatar/e67f630f0b8bc87e59e111d5e955961d?s=96&d=mm&r=g","width":96,"height":96,"caption":"Rahis Saifi"}},{"@type":"BreadcrumbList","@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/#breadcrumblist","itemListElement":[{"@type":"ListItem","position":1,"item":{"@type":"WebPage","@id":"https://socialnomics.net/","url":"https://socialnomics.net/","name":"Socialnomics Blog"}},{"@type":"ListItem","position":2,"item":{"@type":"WebPage","@id":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/","url":"https://socialnomics.net/2016/12/27/3-reasons-why-you-should-adopt-java-based-technology-for-your-business/","name":"3 Reasons Why You Should Adopt Java-based Technology For Your Business"}}]}]}</script>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2016-12-27", ret.dateIso8601());
@@ -202,7 +202,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <title>No date in the HTML</title>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertNull(ret.dateIso8601());
@@ -217,7 +217,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <title>No date in the HTML</title>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertEquals("2022-02-03", ret.dateIso8601());
@@ -232,7 +232,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <p>Published 2003, updated 2022</p>
-                        """), HtmlStandard.HTML5, true);
+                        """), DocumentFormat.HTML5, true);
 
         assertFalse(ret.isEmpty());
         assertNull(ret.dateIso8601());
@@ -258,7 +258,7 @@ class PubDateSnifferTest {
                         <!doctype html>
                         <html>
                         <div style="float: left;">&nbsp;<b>Post subject:</b> Keyboards.</div><div style="float: right;"><span class="postdetails"><b><img src="./styles/subsilver2/imageset/icon_post_target.gif" width="12" height="9" alt="Post" title="Post" /> <a  href="./viewtopic.php?p=34580&amp;sid=cf0c13dedebb4fea1f03fa73e510cd9f#p34580">#1</a></b></span>&nbsp;<b>Posted:</b> Sun Oct 03, 2010 5:37 pm&nbsp;</div>
-                        """), HtmlStandard.UNKNOWN, true);
+                        """), DocumentFormat.UNKNOWN, true);
 
         assertFalse(ret.isEmpty());
         assertNull(ret.dateIso8601());

code/processes/crawling-process/build.gradle

@@ -58,6 +58,7 @@ dependencies {
     implementation libs.jsoup
     implementation libs.opencsv
     implementation libs.fastutil
+    implementation libs.bundles.curator
 
     implementation libs.bundles.mariadb
     implementation libs.bundles.httpcomponents

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

@@ -25,9 +25,12 @@ import nu.marginalia.mq.MessageQueueFactory;
 import nu.marginalia.process.ProcessConfiguration;
 import nu.marginalia.process.ProcessConfigurationModule;
 import nu.marginalia.process.ProcessMainClass;
+import nu.marginalia.process.control.ProcessEventLog;
 import nu.marginalia.process.control.ProcessHeartbeatImpl;
 import nu.marginalia.process.log.WorkLog;
+import nu.marginalia.service.discovery.ServiceRegistryIf;
 import nu.marginalia.service.module.DatabaseModule;
+import nu.marginalia.service.module.ServiceDiscoveryModule;
 import nu.marginalia.slop.SlopCrawlDataRecord;
 import nu.marginalia.storage.FileStorageService;
 import nu.marginalia.storage.model.FileStorageId;
@@ -54,6 +57,7 @@ public class CrawlerMain extends ProcessMainClass {
 
     private final UserAgent userAgent;
     private final ProcessHeartbeatImpl heartbeat;
+    private final ProcessEventLog eventLog;
     private final DomainProber domainProber;
     private final FileStorageService fileStorageService;
     private final AnchorTagsSourceFactory anchorTagsSourceFactory;
@@ -61,6 +65,7 @@ public class CrawlerMain extends ProcessMainClass {
     private final HikariDataSource dataSource;
     private final DomainBlacklist blacklist;
     private final int node;
+    private final ServiceRegistryIf serviceRegistry;
     private final SimpleBlockingThreadPool pool;
 
     private final DomainLocks domainLocks = new DomainLocks();
@@ -84,6 +89,7 @@ public class CrawlerMain extends ProcessMainClass {
     public CrawlerMain(UserAgent userAgent,
                        HttpFetcherImpl httpFetcher,
                        ProcessHeartbeatImpl heartbeat,
+                       ProcessEventLog eventLog,
                        MessageQueueFactory messageQueueFactory, DomainProber domainProber,
                        FileStorageService fileStorageService,
                        ProcessConfiguration processConfiguration,
@@ -91,6 +97,7 @@ public class CrawlerMain extends ProcessMainClass {
                        WarcArchiverFactory warcArchiverFactory,
                        HikariDataSource dataSource,
                        DomainBlacklist blacklist,
+                       ServiceRegistryIf serviceRegistry,
                        Gson gson) throws InterruptedException {
 
         super(messageQueueFactory, processConfiguration, gson, CRAWLER_INBOX);
@@ -98,6 +105,7 @@ public class CrawlerMain extends ProcessMainClass {
         this.userAgent = userAgent;
         this.fetcher = httpFetcher;
         this.heartbeat = heartbeat;
+        this.eventLog = eventLog;
         this.domainProber = domainProber;
         this.fileStorageService = fileStorageService;
         this.anchorTagsSourceFactory = anchorTagsSourceFactory;
@@ -105,6 +113,7 @@ public class CrawlerMain extends ProcessMainClass {
         this.dataSource = dataSource;
         this.blacklist = blacklist;
         this.node = processConfiguration.node();
+        this.serviceRegistry = serviceRegistry;
 
         SimpleBlockingThreadPool.ThreadType threadType;
         if (Boolean.getBoolean("crawler.useVirtualThreads")) {
@@ -147,12 +156,17 @@ public class CrawlerMain extends ProcessMainClass {
             Injector injector = Guice.createInjector(
                     new CrawlerModule(),
                     new ProcessConfigurationModule("crawler"),
+                    new ServiceDiscoveryModule(),
                     new DatabaseModule(false)
             );
             var crawler = injector.getInstance(CrawlerMain.class);
 
             var instructions = crawler.fetchInstructions(nu.marginalia.mqapi.crawling.CrawlRequest.class);
+
+            crawler.serviceRegistry.registerProcess("crawler", crawler.node);
+
             try {
+                crawler.eventLog.logEvent("CRAWLER-INFO", "Crawling started");
                 var req = instructions.value();
                 if (req.targetDomainName != null) {
                     crawler.runForSingleDomain(req.targetDomainName, req.crawlStorage);
@@ -160,11 +174,15 @@ public class CrawlerMain extends ProcessMainClass {
                 else {
                     crawler.runForDatabaseDomains(req.crawlStorage);
                 }
+                crawler.eventLog.logEvent("CRAWLER-INFO", "Crawl completed successfully");
                 instructions.ok();
             } catch (Exception ex) {
                 logger.error("Crawler failed", ex);
                 instructions.err();
             }
+            finally {
+                crawler.serviceRegistry.deregisterProcess("crawler", crawler.node);
+            }
 
             TimeUnit.SECONDS.sleep(5);
         }

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

@@ -36,6 +36,7 @@ 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.ssl.SSLContextBuilder;
 import org.apache.hc.core5.util.TimeValue;
 import org.apache.hc.core5.util.Timeout;
 import org.jsoup.Jsoup;
@@ -48,11 +49,15 @@ import org.slf4j.MarkerFactory;
 
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLException;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
 import java.io.IOException;
 import java.net.SocketTimeoutException;
 import java.net.URISyntaxException;
 import java.net.UnknownHostException;
+import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
+import java.security.cert.X509Certificate;
 import java.time.Duration;
 import java.time.Instant;
 import java.util.*;
@@ -87,18 +92,49 @@ public class HttpFetcherImpl implements HttpFetcher, HttpRequestRetryStrategy {
         return connectionManager.getTotalStats();
     }
 
-    private CloseableHttpClient createClient() throws NoSuchAlgorithmException {
+    private CloseableHttpClient createClient() throws NoSuchAlgorithmException, KeyManagementException {
         final ConnectionConfig connectionConfig = ConnectionConfig.custom()
                 .setSocketTimeout(10, TimeUnit.SECONDS)
                 .setConnectTimeout(30, TimeUnit.SECONDS)
                 .setValidateAfterInactivity(TimeValue.ofSeconds(5))
                 .build();
 
+        // No-op up front validation of server certificates.
+        //
+        // We will validate certificates later, after the connection is established
+        // as we want to store the certificate chain and validation
+        // outcome to the database.
+
+        var trustMeBro = new X509TrustManager() {
+            private X509Certificate[] lastServerCertChain;
+
+            @Override
+            public void checkClientTrusted(X509Certificate[] chain, String authType) {
+            }
+
+            @Override
+            public void checkServerTrusted(X509Certificate[] chain, String authType) {
+                this.lastServerCertChain = chain.clone();
+            }
+
+            @Override
+            public X509Certificate[] getAcceptedIssuers() {
+                return new X509Certificate[0];
+            }
+
+            public X509Certificate[] getLastServerCertChain() {
+                return lastServerCertChain != null ? lastServerCertChain.clone() : null;
+            }
+        };
+
+        SSLContext sslContext = SSLContextBuilder.create().build();
+        sslContext.init(null, new TrustManager[]{trustMeBro}, null);
+
         connectionManager = PoolingHttpClientConnectionManagerBuilder.create()
                 .setMaxConnPerRoute(2)
                 .setMaxConnTotal(5000)
                 .setDefaultConnectionConfig(connectionConfig)
-                .setTlsSocketStrategy(new DefaultClientTlsStrategy(SSLContext.getDefault()))
+                .setTlsSocketStrategy(new DefaultClientTlsStrategy(sslContext))
                 .build();
 
         connectionManager.setDefaultSocketConfig(SocketConfig.custom()
@@ -183,6 +219,8 @@ public class HttpFetcherImpl implements HttpFetcher, HttpRequestRetryStrategy {
             this.client = createClient();
         } catch (NoSuchAlgorithmException e) {
             throw new RuntimeException(e);
+        } catch (KeyManagementException e) {
+            throw new RuntimeException(e);
         }
         this.userAgentString = userAgent.uaString();
         this.userAgentIdentifier = userAgent.uaIdentifier();
@@ -193,6 +231,8 @@ public class HttpFetcherImpl implements HttpFetcher, HttpRequestRetryStrategy {
             this.client = createClient();
         } catch (NoSuchAlgorithmException e) {
             throw new RuntimeException(e);
+        } catch (KeyManagementException e) {
+            throw new RuntimeException(e);
         }
         this.userAgentString = userAgent;
         this.userAgentIdentifier = userAgent;

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

@@ -10,6 +10,7 @@ import java.net.http.HttpClient;
 import java.net.http.HttpHeaders;
 import java.net.http.HttpResponse;
 import java.nio.charset.StandardCharsets;
+import java.time.Duration;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -90,8 +91,8 @@ public class WarcProtocolReconstructor {
         return "HTTP/" + version + " " + statusCode + " " + statusMessage + "\r\n" + headerString + "\r\n\r\n";
     }
 
-    static String getResponseHeader(ClassicHttpResponse response, long size) {
+    static String getResponseHeader(ClassicHttpResponse response, Duration responseDuration, long size) {
-        String headerString = getHeadersAsString(response.getHeaders(), size);
+        String headerString = getHeadersAsString(response.getHeaders(), responseDuration, size);
 
         return response.getVersion().format() + " " + response.getCode() + " " + response.getReasonPhrase() + "\r\n" + headerString + "\r\n\r\n";
     }
@@ -160,7 +161,7 @@ public class WarcProtocolReconstructor {
 
 
 
-    static private String getHeadersAsString(Header[] headers, long responseSize) {
+    static private String getHeadersAsString(Header[] headers, Duration responseDuration, long responseSize) {
         StringJoiner joiner = new StringJoiner("\r\n");
 
         for (var header : headers) {
@@ -176,6 +177,7 @@ public class WarcProtocolReconstructor {
             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"))
@@ -184,6 +186,7 @@ public class WarcProtocolReconstructor {
             joiner.add(headerCapitalized + ": " + header.getValue());
         }
 
+        joiner.add("X-Marginalia-Response-Time: " + responseDuration.toMillis());
         joiner.add("Content-Length: " + responseSize);
 
         return joiner.toString();

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

@@ -93,7 +93,7 @@ public class WarcRecorder implements AutoCloseable {
         WarcDigestBuilder responseDigestBuilder = new WarcDigestBuilder();
         WarcDigestBuilder payloadDigestBuilder = new WarcDigestBuilder();
 
-        Instant date = Instant.now();
+        Instant requestDate = Instant.now();
 
         // 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);
@@ -108,6 +108,8 @@ public class WarcRecorder implements AutoCloseable {
                 try (WarcInputBuffer inputBuffer = WarcInputBuffer.forResponse(response, request, timeout);
                      InputStream inputStream = inputBuffer.read()) {
 
+                    Instant responseDate = Instant.now();
+
                     cookies.updateCookieStore(response);
 
                     // Build and write the request
@@ -126,7 +128,7 @@ public class WarcRecorder implements AutoCloseable {
 
                     WarcRequest warcRequest = new WarcRequest.Builder(requestUri)
                             .blockDigest(requestDigestBuilder.build())
-                            .date(date)
+                            .date(requestDate)
                             .body(MediaType.HTTP_REQUEST, httpRequestString)
                             .build();
 
@@ -138,7 +140,9 @@ public class WarcRecorder implements AutoCloseable {
                         response.addHeader("X-Has-Cookies", 1);
                     }
 
-                    byte[] responseHeaders = WarcProtocolReconstructor.getResponseHeader(response, inputBuffer.size()).getBytes(StandardCharsets.UTF_8);
+                    byte[] responseHeaders = WarcProtocolReconstructor.getResponseHeader(response,
+                            Duration.between(requestDate, responseDate),
+                            inputBuffer.size()).getBytes(StandardCharsets.UTF_8);
 
                     ResponseDataBuffer responseDataBuffer = new ResponseDataBuffer(inputBuffer.size() + responseHeaders.length);
 
@@ -169,7 +173,7 @@ public class WarcRecorder implements AutoCloseable {
 
                     WarcResponse.Builder responseBuilder = new WarcResponse.Builder(responseUri)
                             .blockDigest(responseDigestBuilder.build())
-                            .date(date)
+                            .date(responseDate)
                             .concurrentTo(warcRequest.id())
                             .body(MediaType.HTTP_RESPONSE, responseDataBuffer.copyBytes());
 
@@ -184,7 +188,7 @@ 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);
 
-                    if (Duration.between(date, Instant.now()).compareTo(Duration.ofSeconds(9)) > 0
+                    if (Duration.between(requestDate, Instant.now()).compareTo(Duration.ofSeconds(9)) > 0
                             && inputBuffer.size() < 2048
                             && !requestUri.getPath().endsWith("robots.txt")) // don't bail on robots.txt
                     {
@@ -196,7 +200,7 @@ public class WarcRecorder implements AutoCloseable {
 
                         logger.warn("URL {} took too long to fetch ({}s) and was too small for the effort ({}b)",
                                 requestUri,
-                                Duration.between(date, Instant.now()).getSeconds(),
+                                Duration.between(requestDate, Instant.now()).getSeconds(),
                                 inputBuffer.size()
                         );
 

code/processes/crawling-process/model/java/nu/marginalia/ContentTypes.java

@@ -8,6 +8,8 @@ public class ContentTypes {
     public static final Set<String> acceptedContentTypes = Set.of("application/xhtml+xml",
             "application/xhtml",
             "text/html",
+            "text/markdown",
+            "text/x-markdown",
             "application/pdf",
             "image/x-icon",
             "text/plain");

code/processes/crawling-process/model/java/nu/marginalia/io/crawldata/format/ParquetSerializableCrawlDataStream.java

@@ -148,6 +148,7 @@ public class ParquetSerializableCrawlDataStream implements AutoCloseable, Serial
                 nextRecord.body,
                 // this field isn't actually used, maybe we can skip calculating it?
                 nextRecord.cookies,
+                -1,
                 lastModified,
                 etag));
     }

code/processes/crawling-process/model/java/nu/marginalia/io/crawldata/format/SlopSerializableCrawlDataStream.java

@@ -166,6 +166,7 @@ public class SlopSerializableCrawlDataStream implements AutoCloseable, Serializa
                 nextRecord.body(),
                 // this field isn't actually used, maybe we can skip calculating it?
                 nextRecord.cookies(),
+                nextRecord.requestTimeMs(),
                 null,
                 null));
     }

code/processes/crawling-process/model/java/nu/marginalia/model/crawldata/CrawledDocument.java

@@ -23,6 +23,7 @@ public final class CrawledDocument implements SerializableCrawlData {
 
     public String crawlerStatus;
     public String crawlerStatusDesc;
+    public int requestTimeMs;
 
     @Nullable
     public String headers;
@@ -82,7 +83,7 @@ public final class CrawledDocument implements SerializableCrawlData {
     public String lastModifiedMaybe;
     public String etagMaybe;
 
-    public CrawledDocument(String crawlId, String url, String contentType, String timestamp, int httpStatus, String crawlerStatus, String crawlerStatusDesc, @Nullable String headers, byte[] documentBodyBytes, Boolean hasCookies, String lastModifiedMaybe, String etagMaybe) {
+    public CrawledDocument(String crawlId, String url, String contentType, String timestamp, int httpStatus, String crawlerStatus, String crawlerStatusDesc, @Nullable String headers, byte[] documentBodyBytes, Boolean hasCookies, int requestTimeMs, String lastModifiedMaybe, String etagMaybe) {
         this.crawlId = crawlId;
         this.url = url;
         this.contentType = contentType;
@@ -94,6 +95,7 @@ public final class CrawledDocument implements SerializableCrawlData {
         this.documentBodyBytes = Objects.requireNonNullElse(documentBodyBytes, new byte[] {});
         this.hasCookies = hasCookies;
         this.lastModifiedMaybe = lastModifiedMaybe;
+        this.requestTimeMs = requestTimeMs;
         this.etagMaybe = etagMaybe;
     }
 
@@ -173,6 +175,7 @@ public final class CrawledDocument implements SerializableCrawlData {
         private byte[] documentBodyBytes = new byte[0];
         private String recrawlState;
         private Boolean hasCookies;
+        private int requestTimeMs;
         private String lastModifiedMaybe;
         private String etagMaybe;
 
@@ -248,8 +251,13 @@ public final class CrawledDocument implements SerializableCrawlData {
             return this;
         }
 
+        public CrawledDocumentBuilder requestTimeMs(int requestTimeMs) {
+            this.requestTimeMs = requestTimeMs;
+            return this;
+        }
+
         public CrawledDocument build() {
-            return new CrawledDocument(this.crawlId, this.url, this.contentType, this.timestamp, this.httpStatus, this.crawlerStatus, this.crawlerStatusDesc, this.headers, this.documentBodyBytes, this.hasCookies, this.lastModifiedMaybe, this.etagMaybe);
+            return new CrawledDocument(this.crawlId, this.url, this.contentType, this.timestamp, this.httpStatus, this.crawlerStatus, this.crawlerStatusDesc, this.headers, this.documentBodyBytes, this.hasCookies, this.requestTimeMs, this.lastModifiedMaybe, this.etagMaybe);
         }
 
         public String toString() {

code/processes/crawling-process/model/java/nu/marginalia/slop/SlopCrawlDataRecord.java

@@ -9,6 +9,7 @@ import nu.marginalia.parquet.crawldata.CrawledDocumentParquetRecord;
 import nu.marginalia.parquet.crawldata.CrawledDocumentParquetRecordFileReader;
 import nu.marginalia.slop.column.array.ByteArrayColumn;
 import nu.marginalia.slop.column.primitive.ByteColumn;
+import nu.marginalia.slop.column.primitive.IntColumn;
 import nu.marginalia.slop.column.primitive.LongColumn;
 import nu.marginalia.slop.column.primitive.ShortColumn;
 import nu.marginalia.slop.column.string.EnumColumn;
@@ -39,6 +40,7 @@ public record SlopCrawlDataRecord(String domain,
                                   long timestamp,
                                   String contentType,
                                   byte[] body,
+                                  int requestTimeMs,
                                   String headers)
 {
     private static final EnumColumn domainColumn = new EnumColumn("domain", StandardCharsets.UTF_8, StorageType.ZSTD);
@@ -49,6 +51,7 @@ public record SlopCrawlDataRecord(String domain,
     private static final LongColumn timestampColumn = new LongColumn("timestamp");
     private static final EnumColumn contentTypeColumn = new EnumColumn("contentType", StandardCharsets.UTF_8);
     private static final ByteArrayColumn bodyColumn = new ByteArrayColumn("body", StorageType.ZSTD);
+    private static final ShortColumn requestTimeColumn = new ShortColumn("requestTimeMs");
     private static final StringColumn headerColumn = new StringColumn("header", StandardCharsets.UTF_8, StorageType.ZSTD);
 
     public SlopCrawlDataRecord(CrawledDocumentParquetRecord parquetRecord) {
@@ -60,6 +63,7 @@ public record SlopCrawlDataRecord(String domain,
                 parquetRecord.timestamp.toEpochMilli(),
                 parquetRecord.contentType,
                 parquetRecord.body,
+                -1,
                 parquetRecord.headers
                 );
     }
@@ -74,6 +78,7 @@ public record SlopCrawlDataRecord(String domain,
                 date.toEpochMilli(),
                 "x-marginalia/advisory;state=redirect",
                 new byte[0],
+                -1,
                 ""
         );
     }
@@ -87,6 +92,7 @@ public record SlopCrawlDataRecord(String domain,
                 date.toEpochMilli(),
                 "x-marginalia/advisory;state=error",
                 errorStatus.getBytes(),
+                -1,
                 ""
         );
     }
@@ -100,6 +106,7 @@ public record SlopCrawlDataRecord(String domain,
                 date.toEpochMilli(),
                 errorStatus,
                 new byte[0],
+                -1,
                 ""
         );
     }
@@ -158,11 +165,12 @@ public record SlopCrawlDataRecord(String domain,
                         // and is used to store old responses from previous crawls; in this part of the logic
                         // we treat them the same as a normal response
 
-                        if (!filterResponse(uaString, response)) {
+                        var filterStatus = filterResponse(uaString, response);
+                        if (filterStatus.isRejected()) {
                             continue;
                         }
 
-                        slopWriter.write(domain, response);
+                        slopWriter.write(domain, filterStatus, response);
                     } else if (record instanceof WarcXEntityRefused refused) {
                         slopWriter.write(domain, refused);
                     } else if (record instanceof Warcinfo warcinfo) {
@@ -187,25 +195,35 @@ public record SlopCrawlDataRecord(String domain,
         }
     }
 
-
+    sealed interface ResponseFilterResult {
+        default boolean isRejected() { return false; }
+        record Accept() implements ResponseFilterResult {}
+        record AcceptWithContentType(String contentType) implements ResponseFilterResult {}
+        record AcceptIfPlainText(String contentType) implements ResponseFilterResult {}
+        record Reject() implements ResponseFilterResult {
+            @Override
+            public boolean isRejected() { return true; }
+        }
+    }
 
     /** Return true if the WarcResponse should be excluded from conversion */
-    private static boolean filterResponse(String uaString, WarcResponse response) throws IOException {
+    private static ResponseFilterResult filterResponse(String uaString, WarcResponse response) throws IOException {
 
         // We don't want to store robots.txt files, as they are not
         // interesting for the analysis we want to do.  This is important
         // since txt-files in general are interesting, and we don't want to
         // exclude them as a class.
 
-        if (response.targetURI().getPath().equals("/robots.txt")) {
+        String uriPath = response.targetURI().getPath();
-            return false;
+        if (uriPath.equals("/robots.txt")) {
+            return new ResponseFilterResult.Reject();
         }
 
         var headers = response.http().headers();
         var robotsTags = headers.all("X-Robots-Tag");
 
         if (!isXRobotsTagsPermitted(robotsTags, uaString)) {
-            return false;
+            return new ResponseFilterResult.Reject();
         }
 
         // Strip out responses with content types we aren't interested in
@@ -213,15 +231,29 @@ public record SlopCrawlDataRecord(String domain,
         String contentType = headers.first("Content-Type").orElse("text/plain").toLowerCase();
 
         if (!ContentTypes.isAccepted(contentType)) {
-            return false;
+            String contentTypeWithoutParams = StringUtils.substringBefore(contentType, ";");
+
+            // Some servers don't understand what a markdown file is
+            if (contentTypeWithoutParams.equals("application/octet-stream")) {
+                if (uriPath.endsWith(".md")) {
+                    // This is a markdown file, which we want to keep
+                    return new ResponseFilterResult.AcceptIfPlainText("text/markdown");
+                }
+                else if (uriPath.endsWith(".pdf")) {
+                    // This is a text file, which we want to keep
+                    return new ResponseFilterResult.AcceptWithContentType("application/pdf");
+                }
+            }
+
+            return new ResponseFilterResult.Reject();
         }
 
         // If the format is binary, we don't want to translate it if the response is truncated
         if (response.truncated() != WarcTruncationReason.NOT_TRUNCATED && ContentTypes.isBinary(contentType)) {
-            return false;
+            return new ResponseFilterResult.Reject();
         }
 
-        return true;
+        return new ResponseFilterResult.Accept();
     }
 
     /**  Check X-Robots-Tag header tag to see if we are allowed to index this page.
@@ -296,6 +328,7 @@ public record SlopCrawlDataRecord(String domain,
         private final LongColumn.Writer timestampColumnWriter;
         private final EnumColumn.Writer contentTypeColumnWriter;
         private final ByteArrayColumn.Writer bodyColumnWriter;
+        private final ShortColumn.Writer requestTimeColumnWriter;
         private final StringColumn.Writer headerColumnWriter;
 
         public Writer(Path path) throws IOException {
@@ -309,6 +342,7 @@ public record SlopCrawlDataRecord(String domain,
             timestampColumnWriter = timestampColumn.create(this);
             contentTypeColumnWriter = contentTypeColumn.create(this);
             bodyColumnWriter = bodyColumn.create(this);
+            requestTimeColumnWriter = requestTimeColumn.create(this);
             headerColumnWriter = headerColumn.create(this);
         }
 
@@ -321,10 +355,11 @@ public record SlopCrawlDataRecord(String domain,
             timestampColumnWriter.put(record.timestamp);
             contentTypeColumnWriter.put(record.contentType);
             bodyColumnWriter.put(record.body);
+            requestTimeColumnWriter.put((short) record.requestTimeMs);
             headerColumnWriter.put(record.headers);
         }
 
-        public void write(String domain, WarcResponse response) throws IOException {
+        public void write(String domain, ResponseFilterResult filterStatus, WarcResponse response) throws IOException {
 
             HttpFetchResult result = HttpFetchResult.importWarc(response);
             if (!(result instanceof HttpFetchResult.ResultOk fetchOk)) {
@@ -347,14 +382,39 @@ public record SlopCrawlDataRecord(String domain,
                 contentType = "";
             }
 
+            switch (filterStatus) {
+                case ResponseFilterResult.AcceptWithContentType(String ct) -> contentType = ct;
+                case ResponseFilterResult.AcceptIfPlainText(String ct) -> {
+                    try {
+                        // Parse the body as UTF-8
+                        new String(bodyBytes, StandardCharsets.UTF_8);
+                        contentType = ct;
+                    }
+                    catch (RuntimeException ex) { // UTF-8 decoding failed
+                        return;
+                    }
+                }
+                default -> {}
+            }
+
             boolean hasCookies = false;
 
             String headersStr;
             StringJoiner headersStrBuilder = new StringJoiner("\n");
+            int requestTimeMs = -1;
             for (var header : headers) {
                 if (header.getName().equalsIgnoreCase("X-Cookies") && "1".equals(header.getValue())) {
                     hasCookies = true;
                 }
+                if (header.getName().equals("X-Marginalia-Response-Time")) {
+                    try {
+                        requestTimeMs = Integer.parseInt(header.getValue());
+                    }
+                    catch (NumberFormatException ex) {
+                        logger.warn("Failed to parse X-Marginalia-Response-Time header: {}", header.getValue());
+                    }
+                    continue;
+                }
                 headersStrBuilder.add(header.getName() + ": " + header.getValue());
             }
             headersStr = headersStrBuilder.toString();
@@ -369,6 +429,7 @@ public record SlopCrawlDataRecord(String domain,
                     response.date().toEpochMilli(),
                     contentType,
                     bodyBytes,
+                    requestTimeMs,
                     headersStr
                 )
             );
@@ -421,6 +482,7 @@ public record SlopCrawlDataRecord(String domain,
         private final LongColumn.Reader timestampColumnReader;
         private final EnumColumn.Reader contentTypeColumnReader;
         private final ByteArrayColumn.Reader bodyColumnReader;
+        private final ShortColumn.Reader requestTimeColumnReader;
         private final StringColumn.Reader headerColumnReader;
 
         public Reader(Path path) throws IOException {
@@ -435,6 +497,17 @@ public record SlopCrawlDataRecord(String domain,
             contentTypeColumnReader = contentTypeColumn.open(this);
             bodyColumnReader = bodyColumn.open(this);
             headerColumnReader = headerColumn.open(this);
+
+            // FIXME: After 2025-06-XX, we can remove this migration workaround
+            ShortColumn.Reader timeColumnReader;
+            try {
+                timeColumnReader = requestTimeColumn.open(this);
+            }
+            catch (Exception ex) {
+                // Migration workaround
+                timeColumnReader = null;
+            }
+            requestTimeColumnReader = timeColumnReader;
         }
 
         public SlopCrawlDataRecord get() throws IOException {
@@ -447,6 +520,7 @@ public record SlopCrawlDataRecord(String domain,
                     timestampColumnReader.get(),
                     contentTypeColumnReader.get(),
                     bodyColumnReader.get(),
+                    requestTimeColumnReader != null ? requestTimeColumnReader.get() : -1,
                     headerColumnReader.get()
             );
         }
@@ -466,6 +540,7 @@ public record SlopCrawlDataRecord(String domain,
         private final LongColumn.Reader timestampColumnReader;
         private final EnumColumn.Reader contentTypeColumnReader;
         private final ByteArrayColumn.Reader bodyColumnReader;
+        private final ShortColumn.Reader requestTimeColumnReader;
         private final StringColumn.Reader headerColumnReader;
 
         private SlopCrawlDataRecord next = null;
@@ -482,6 +557,17 @@ public record SlopCrawlDataRecord(String domain,
             contentTypeColumnReader = contentTypeColumn.open(this);
             bodyColumnReader = bodyColumn.open(this);
             headerColumnReader = headerColumn.open(this);
+
+            // FIXME: After 2025-06-XX, we can remove this migration workaround
+            ShortColumn.Reader timeColumnReader;
+            try {
+                timeColumnReader = requestTimeColumn.open(this);
+            }
+            catch (Exception ex) {
+                // Migration workaround
+                timeColumnReader = null;
+            }
+            requestTimeColumnReader = timeColumnReader;
         }
 
         public abstract boolean filter(String url, int status, String contentType);
@@ -508,6 +594,7 @@ public record SlopCrawlDataRecord(String domain,
                 boolean cookies = cookiesColumnReader.get() == 1;
                 int status = statusColumnReader.get();
                 long timestamp = timestampColumnReader.get();
+                int requestTimeMs = requestTimeColumnReader != null ? requestTimeColumnReader.get() : -1;
                 String contentType = contentTypeColumnReader.get();
 
                 LargeItem<byte[]> body = bodyColumnReader.getLarge();
@@ -515,7 +602,7 @@ public record SlopCrawlDataRecord(String domain,
 
                 if (filter(url, status, contentType)) {
                     next = new SlopCrawlDataRecord(
-                            domain, url, ip, cookies, status, timestamp, contentType, body.get(), headers.get()
+                            domain, url, ip, cookies, status, timestamp, contentType, body.get(), requestTimeMs, headers.get()
                     );
                     return true;
                 }

code/processes/crawling-process/test/nu/marginalia/crawling/retreival/CrawlerRetreiverTest.java

@@ -119,12 +119,17 @@ class CrawlerRetreiverTest {
 
 
     @Test
-    public void testWarcOutputPDF() throws IOException {
+    public void verifyFileFormatSupport() throws IOException {
+        List<String> urls = List.of(
+                "https://www.marginalia.nu/junk/test.pdf",
+                "https://www.marginalia.nu/junk/test.md"
+        );
+
         var specs = CrawlerMain.CrawlSpecRecord
                 .builder()
                 .crawlDepth(5)
                 .domain("www.marginalia.nu")
-                .urls(List.of("https://www.marginalia.nu/junk/test.pdf"))
+                .urls(urls)
                 .build();
         Path tempFile = null;
         Path slopFile = null;
@@ -146,7 +151,11 @@ class CrawlerRetreiverTest {
                     }
                     else if (record instanceof WarcResponse rsp) {
                         responses.add(rsp.target());
-                        System.out.println(rsp.type() + ":" + rsp.target());
+                        try {
+                            System.out.println(rsp.type() + ":" + rsp.target() + ":" + rsp.http().contentType());
+                        } catch (IOException e) {
+                            throw new RuntimeException(e);
+                        }
                     }
                     else {
                         System.out.println(record.type());
@@ -154,7 +163,9 @@ class CrawlerRetreiverTest {
                 });
             }
 
-            assertTrue(requests.contains("https://www.marginalia.nu/junk/test.pdf"));
+            for (var url : urls) {
+                assertTrue(requests.contains(url), "Should have requested " + url);
+            }
             assertEquals(requests, responses);
 
             // Convert the WARC file to a Slop file
@@ -181,15 +192,18 @@ class CrawlerRetreiverTest {
                 throw new RuntimeException(e);
             }
 
-            // Verify we have a PDF in the Slop file
+            for (var url : urls) {
-            assertNotNull(domain);
+                // Verify we have the downloaded files in the Slop file
-            var pdfDoc = documents.get("https://www.marginalia.nu/junk/test.pdf");
+                assertNotNull(domain);
-            assertNotNull(pdfDoc);
+                var fetchedDoc = documents.get(url);
-            assertEquals("https://www.marginalia.nu/junk/test.pdf", pdfDoc.url);
+                assertNotNull(fetchedDoc, "Should have a document for " + url);
-            assertEquals(206, pdfDoc.httpStatus);
+                assertEquals(url, fetchedDoc.url);
-            assertTrue(pdfDoc.documentBodyBytes.length > 100);
+                assertTrue(fetchedDoc.httpStatus == 200 || fetchedDoc.httpStatus == 206, "Should be 200 or 206 for " + url);
-        }
+                assertTrue(fetchedDoc.documentBodyBytes.length > 32, "Should have a body for " + url);
-        finally {
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        } finally {
             if (tempFile != null)
                 Files.deleteIfExists(tempFile);
             if (slopFile != null)

code/processes/live-crawling-process/java/nu/marginalia/livecrawler/LiveCrawlDataSet.java

@@ -195,6 +195,7 @@ public class LiveCrawlDataSet implements AutoCloseable {
                             headers,
                             body,
                             false,
+                            -1,
                             "",
                             ""
                     ));

code/processes/ping-process/build.gradle

@@ -0,0 +1,71 @@
+plugins {
+    id 'java'
+
+    id 'application'
+    id 'jvm-test-suite'
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(rootProject.ext.jvmVersion))
+    }
+}
+
+application {
+    mainClass = 'nu.marginalia.ping.PingMain'
+    applicationName = 'ping-process'
+}
+
+tasks.distZip.enabled = false
+
+apply from: "$rootProject.projectDir/srcsets.gradle"
+
+dependencies {
+
+    implementation project(':code:common:db')
+    implementation project(':code:common:model')
+    implementation project(':code:common:config')
+    implementation project(':code:common:service')
+
+    implementation project(':code:libraries:geo-ip')
+    implementation project(':code:libraries:message-queue')
+
+    implementation project(':code:processes:process-mq-api')
+    implementation libs.bundles.slf4j
+    implementation libs.notnull
+    implementation libs.guava
+
+    implementation dependencies.create(libs.guice.get()) {
+        exclude group: 'com.google.guava'
+    }
+    implementation libs.gson
+    implementation libs.zstd
+    implementation libs.bucket4j
+    implementation libs.crawlercommons
+    implementation libs.jsoup
+    implementation libs.fastutil
+    implementation libs.bundles.curator
+    implementation libs.bundles.mariadb
+    implementation libs.bundles.httpcomponents
+    implementation libs.commons.lang3
+
+    implementation 'org.bouncycastle:bcprov-jdk18on:1.80'
+    implementation 'org.bouncycastle:bcpkix-jdk18on:1.80'
+    implementation 'dnsjava:dnsjava:3.5.2'
+
+    testImplementation libs.bundles.slf4j.test
+    testImplementation libs.bundles.junit
+    testImplementation libs.mockito
+
+    testImplementation libs.wiremock
+
+
+    testImplementation platform('org.testcontainers:testcontainers-bom:1.17.4')
+    testImplementation libs.commons.codec
+    testImplementation 'org.testcontainers:mariadb:1.17.4'
+    testImplementation 'org.testcontainers:junit-jupiter:1.17.4'
+    testImplementation project(':code:libraries:test-helpers')
+
+    testImplementation project(':code:processes:test-data')
+}
+

code/processes/ping-process/java/nu/marginalia/ping/BackoffStrategy.java

@@ -0,0 +1,84 @@
+package nu.marginalia.ping;
+
+import com.google.inject.Inject;
+import nu.marginalia.ping.model.ErrorClassification;
+
+import java.time.Duration;
+import java.util.Map;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class BackoffStrategy {
+
+    private final Map<ErrorClassification, Duration> baseIntervals;
+    private final Map<ErrorClassification, Duration> maxIntervals;
+    private final Duration okInterval;
+
+    @Inject
+    public BackoffStrategy(PingIntervalsConfiguration pingIntervalsConfiguration) {
+        this.baseIntervals = pingIntervalsConfiguration.baseIntervals();
+        this.maxIntervals = pingIntervalsConfiguration.maxIntervals();
+        this.okInterval = baseIntervals.get(ErrorClassification.NONE);
+    }
+
+    public Duration getOkInterval() {
+        return okInterval;
+    }
+
+    public Duration getUpdateTime(Duration currentDuration,
+                           ErrorClassification errorClassification,
+                           int backoffConsecutiveFailures) {
+
+        Duration nextBackoff = calculateBackoff(errorClassification, currentDuration, backoffConsecutiveFailures + 1);
+        nextBackoff = addJitter(nextBackoff);
+
+        return nextBackoff;
+    }
+
+    private Duration calculateBackoff(ErrorClassification errorClassification,
+                                       Duration currentDuration,
+                                       int backoffConsecutiveFailures) {
+
+        if (currentDuration == null) {
+            return baseIntervals.get(errorClassification);
+        }
+
+        Duration baseInterval = baseIntervals.get(errorClassification);
+        Duration maxInterval = maxIntervals.get(errorClassification);
+
+        if (currentDuration.compareTo(maxInterval) >= 0) {
+            return maxInterval;
+        }
+
+        double multiplier = switch(errorClassification) {
+            case ErrorClassification.UNKNOWN -> 1.5;
+            case ErrorClassification.TIMEOUT -> 2.5;
+            case ErrorClassification.CONNECTION_ERROR -> 2.0;
+            case ErrorClassification.HTTP_CLIENT_ERROR -> 1.7;
+            case ErrorClassification.HTTP_SERVER_ERROR -> 2.0;
+            case ErrorClassification.SSL_ERROR -> 1.8;
+            case ErrorClassification.DNS_ERROR -> 1.5;
+            default -> 2.0;  // Default multiplier for any other classification
+        };
+
+        double backoffMinutes = baseInterval.toMinutes()
+                * Math.pow(multiplier, backoffConsecutiveFailures - 1);
+
+        Duration newDuration = Duration.ofMinutes(Math.round(0.5+backoffMinutes));
+        if (newDuration.compareTo(maxInterval) > 0) {
+            return maxInterval;
+        }
+
+        return newDuration;
+    }
+
+    private Duration addJitter(Duration duration) {
+        // Add ±15% jitter to prevent synchronized retries
+        double jitterPercent = 0.15;
+        long baseMinutes = duration.toMinutes();
+        long jitterRange = (long) (baseMinutes * jitterPercent * 2);
+        long jitterOffset = ThreadLocalRandom.current().nextLong(jitterRange + 1) - (jitterRange / 2);
+
+        long finalMinutes = Math.max(1, baseMinutes + jitterOffset);
+        return Duration.ofMinutes(finalMinutes);
+    }
+}

code/processes/ping-process/java/nu/marginalia/ping/PingDao.java

@@ -0,0 +1,257 @@
+package nu.marginalia.ping;
+
+import com.google.gson.Gson;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import com.zaxxer.hikari.HikariDataSource;
+import nu.marginalia.model.gson.GsonFactory;
+import nu.marginalia.ping.model.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Objects;
+
+@Singleton
+public class PingDao {
+    private final HikariDataSource dataSource;
+    private static final Gson gson = GsonFactory.get();
+    private static final Logger logger = LoggerFactory.getLogger(PingDao.class);
+
+    @Inject
+    public PingDao(HikariDataSource dataSource) {
+        this.dataSource = dataSource;
+    }
+
+    public void write(WritableModel model) {
+        write(List.of(model));
+    }
+
+    public void write(Collection<WritableModel> models) {
+        logger.debug("Writing: {}", models);
+
+        try (var conn = dataSource.getConnection()) {
+
+            // Don't bother with a transaction if there's only one model to write.
+            if (models.size() <= 1) {
+                for (WritableModel model : models) {
+                    model.write(conn);
+                }
+            }
+            else { // If there are multiple models, use a transaction to ensure atomicity.
+                conn.setAutoCommit(false);
+                try {
+                    for (WritableModel model : models) {
+                        model.write(conn);
+                    }
+                    conn.commit();
+                } catch (SQLException e) {
+                    conn.rollback();
+                    throw e;
+                } finally {
+                    conn.setAutoCommit(true);
+                }
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to write model", e);
+        }
+    }
+
+    public void scheduleDnsUpdate(String rootDomainName, Instant timestamp, int priority) throws SQLException {
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("""
+            UPDATE DOMAIN_DNS_INFORMATION
+            SET TS_NEXT_DNS_CHECK = ?, DNS_CHECK_PRIORITY = ?
+            WHERE ROOT_DOMAIN_NAME = ?
+            """)) {
+
+            ps.setTimestamp(1, java.sql.Timestamp.from(timestamp));
+            ps.setInt(2, priority);
+            ps.setString(3, rootDomainName);
+            ps.executeUpdate();
+        }
+    }
+
+    public DomainAvailabilityRecord getDomainPingStatus(int domainId) throws SQLException {
+
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("SELECT * FROM DOMAIN_AVAILABILITY_INFORMATION WHERE domain_id = ?")) {
+
+            ps.setInt(1, domainId);
+            ResultSet rs = ps.executeQuery();
+            if (rs.next()) {
+                return new DomainAvailabilityRecord(rs);
+            } else {
+                return null; // or throw an exception if preferred
+            }
+        }
+
+    }
+
+    public DomainSecurityRecord getDomainSecurityInformation(int domainId) throws SQLException {
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("SELECT * FROM DOMAIN_SECURITY_INFORMATION WHERE domain_id = ?")) {
+
+            ps.setInt(1, domainId);
+            ResultSet rs = ps.executeQuery();
+            if (rs.next()) {
+                return new DomainSecurityRecord(rs);
+            } else {
+                return null; // or throw an exception if preferred
+            }
+        }
+    }
+
+    public DomainDnsRecord getDomainDnsRecord(long dnsRootDomainId) throws SQLException {
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("SELECT * FROM DOMAIN_DNS_INFORMATION WHERE DNS_ROOT_DOMAIN_ID = ?")) {
+
+            ps.setObject(1, dnsRootDomainId, java.sql.Types.INTEGER);
+            ResultSet rs = ps.executeQuery();
+            if (rs.next()) {
+                return new DomainDnsRecord(rs);
+            } else {
+                return null; // or throw an exception if preferred
+            }
+        }
+    }
+
+    public DomainDnsRecord getDomainDnsRecord(String rootDomainName) throws SQLException {
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("SELECT * FROM DOMAIN_DNS_INFORMATION WHERE ROOT_DOMAIN_NAME = ?")) {
+
+            ps.setString(1, rootDomainName);
+            ResultSet rs = ps.executeQuery();
+            if (rs.next()) {
+                return new DomainDnsRecord(rs);
+            } else {
+                return null; // or throw an exception if preferred
+            }
+        }
+    }
+
+    public HistoricalAvailabilityData getHistoricalAvailabilityData(long domainId) throws SQLException {
+        var query = """
+            SELECT EC_DOMAIN.ID, EC_DOMAIN.DOMAIN_NAME, DOMAIN_AVAILABILITY_INFORMATION.*, DOMAIN_SECURITY_INFORMATION.*
+                FROM EC_DOMAIN
+                LEFT JOIN DOMAIN_SECURITY_INFORMATION ON DOMAIN_SECURITY_INFORMATION.DOMAIN_ID = EC_DOMAIN.ID
+                LEFT JOIN DOMAIN_AVAILABILITY_INFORMATION ON DOMAIN_AVAILABILITY_INFORMATION.DOMAIN_ID = EC_DOMAIN.ID
+                WHERE EC_DOMAIN.ID = ?
+            """;
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement(query)) {
+
+            ps.setLong(1, domainId);
+
+            ResultSet rs = ps.executeQuery();
+            while (rs.next()) {
+                String domainName = rs.getString("EC_DOMAIN.DOMAIN_NAME");
+
+                DomainAvailabilityRecord dar;
+                DomainSecurityRecord dsr;
+
+                if (rs.getObject("DOMAIN_SECURITY_INFORMATION.DOMAIN_ID", Integer.class) != null)
+                    dsr = new DomainSecurityRecord(rs);
+                else
+                    dsr = null;
+
+                if (rs.getObject("DOMAIN_AVAILABILITY_INFORMATION.DOMAIN_ID", Integer.class) != null)
+                    dar = new DomainAvailabilityRecord(rs);
+                else
+                    dar = null;
+
+                if (dar == null) {
+                    return new HistoricalAvailabilityData.JustDomainReference(new DomainReference(
+                            rs.getInt("EC_DOMAIN.ID"),
+                            rs.getInt("EC_DOMAIN.NODE_ID"),
+                            domainName.toLowerCase()
+                    ));
+                }
+                else {
+                    if (dsr != null) {
+                        return new HistoricalAvailabilityData.AvailabilityAndSecurity(domainName, dar, dsr);
+                    } else {
+                        return new HistoricalAvailabilityData.JustAvailability(domainName, dar);
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+
+    public List<UpdateSchedule.UpdateJob<Long, HistoricalAvailabilityData>> getDomainUpdateSchedule(int nodeId) {
+        List<UpdateSchedule.UpdateJob<Long, HistoricalAvailabilityData>> updateJobs = new ArrayList<>();
+
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("""
+                SELECT ID, NEXT_SCHEDULED_UPDATE
+                FROM EC_DOMAIN
+                LEFT JOIN DOMAIN_AVAILABILITY_INFORMATION
+                ON EC_DOMAIN.ID = DOMAIN_AVAILABILITY_INFORMATION.DOMAIN_ID
+                WHERE NODE_AFFINITY = ?
+                """)) {
+            ps.setFetchSize(10_000);
+            ps.setInt(1, nodeId);
+            ResultSet rs = ps.executeQuery();
+            while (rs.next()) {
+                long domainId = rs.getLong("ID");
+                var ts = rs.getTimestamp("NEXT_SCHEDULED_UPDATE");
+                Instant nextUpdate = ts == null ? Instant.now() : ts.toInstant();
+
+                updateJobs.add(new UpdateSchedule.UpdateJob<>(domainId, nextUpdate));
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to retrieve domain update schedule", e);
+        }
+
+        logger.info("Found {} availability update jobs for node {}", updateJobs.size(), nodeId);
+
+        return updateJobs;
+    }
+
+    public List<UpdateSchedule.UpdateJob<RootDomainReference, RootDomainReference>> getDnsUpdateSchedule(int nodeId) {
+        List<UpdateSchedule.UpdateJob<RootDomainReference, RootDomainReference>> updateJobs = new ArrayList<>();
+
+        try (var conn = dataSource.getConnection();
+             var ps = conn.prepareStatement("""
+                SELECT DISTINCT(DOMAIN_TOP),DOMAIN_DNS_INFORMATION.* FROM EC_DOMAIN
+                LEFT JOIN DOMAIN_DNS_INFORMATION ON ROOT_DOMAIN_NAME = DOMAIN_TOP
+                WHERE EC_DOMAIN.NODE_AFFINITY = ?
+                """)) {
+            ps.setFetchSize(10_000);
+            ps.setInt(1, nodeId);
+            ResultSet rs = ps.executeQuery();
+            while (rs.next()) {
+                Long dnsRootDomainId = rs.getObject("DOMAIN_DNS_INFORMATION.DNS_ROOT_DOMAIN_ID", Long.class);
+                String rootDomainName = rs.getString("DOMAIN_TOP");
+
+                if (dnsRootDomainId == null) {
+                    updateJobs.add(
+                            new UpdateSchedule.UpdateJob<>(
+                            new RootDomainReference.ByName(rootDomainName),
+                            Instant.now())
+                    );
+                }
+                else {
+                    var record = new DomainDnsRecord(rs);
+                    updateJobs.add(new UpdateSchedule.UpdateJob<>(
+                            new RootDomainReference.ById(dnsRootDomainId),
+                            Objects.requireNonNullElseGet(record.tsNextScheduledUpdate(), Instant::now))
+                    );
+                }
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("Failed to retrieve DNS update schedule", e);
+        }
+
+        logger.info("Found {} dns update jobs for node {}", updateJobs.size(), nodeId);
+
+        return updateJobs;
+    }
+}

code/processes/ping-process/java/nu/marginalia/ping/PingIntervalsConfiguration.java

@@ -0,0 +1,13 @@
+package nu.marginalia.ping;
+
+import nu.marginalia.ping.model.ErrorClassification;
+
+import java.time.Duration;
+import java.util.Map;
+
+public record PingIntervalsConfiguration(
+        Duration dnsUpdateInterval,
+        Map<ErrorClassification, Duration> baseIntervals,
+        Map<ErrorClassification, Duration> maxIntervals
+) {
+}

code/processes/ping-process/java/nu/marginalia/ping/PingJobScheduler.java

@@ -0,0 +1,290 @@
+package nu.marginalia.ping;
+
+import com.google.inject.Inject;
+import nu.marginalia.ping.model.*;
+import nu.marginalia.ping.svc.DnsPingService;
+import nu.marginalia.ping.svc.HttpPingService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.TimeUnit;
+
+/** PingJobScheduler is responsible for scheduling and processing ping jobs
+ * for both HTTP pings and DNS lookups. It manages a queue of jobs and processes them
+ * in separate threads, ensuring that domains are pinged and DNS records are updated
+ * efficiently.
+ */
+public class PingJobScheduler {
+    private final HttpPingService httpPingService;
+    private final DnsPingService dnsPingService;
+    private final PingDao pingDao;
+
+    private static final Logger logger = LoggerFactory.getLogger(PingJobScheduler.class);
+
+    private static final UpdateSchedule<RootDomainReference, RootDomainReference> dnsUpdateSchedule
+            = new UpdateSchedule<>(250_000);
+    private static final UpdateSchedule<Long, HistoricalAvailabilityData> availabilityUpdateSchedule
+            = new UpdateSchedule<>(250_000);
+
+    public volatile Instant dnsLastSync = Instant.now();
+    public volatile Instant availabilityLastSync = Instant.now();
+
+    public volatile Integer nodeId = null;
+    public volatile boolean running = false;
+
+    private final List<Thread> allThreads = new ArrayList<>();
+
+    @Inject
+    public PingJobScheduler(HttpPingService httpPingService,
+                            DnsPingService dnsPingService,
+                            PingDao pingDao)
+    {
+        this.httpPingService = httpPingService;
+        this.dnsPingService = dnsPingService;
+        this.pingDao = pingDao;
+    }
+
+    public synchronized void start(boolean startPaused) {
+        if (running)
+            return;
+
+        nodeId = null;
+
+        running = true;
+
+        allThreads.add(Thread.ofPlatform().daemon().name("sync-dns").start(this::syncAvailabilityJobs));
+        allThreads.add(Thread.ofPlatform().daemon().name("sync-availability").start(this::syncDnsRecords));
+
+        int availabilityThreads = Integer.getInteger("ping.availabilityThreads", 8);
+        int pingThreads = Integer.getInteger("ping.dnsThreads", 2);
+
+        for (int i = 0; i < availabilityThreads; i++) {
+            allThreads.add(Thread.ofPlatform().daemon().name("availability-job-consumer-" + i).start(this::availabilityJobConsumer));
+        }
+        for (int i = 0; i < pingThreads; i++) {
+            allThreads.add(Thread.ofPlatform().daemon().name("dns-job-consumer-" + i).start(this::dnsJobConsumer));
+        }
+    }
+
+    public void stop() {
+        running = false;
+        for (Thread thread : allThreads) {
+            try {
+                thread.interrupt();
+                thread.join();
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                logger.error("Failed to join thread: " + thread.getName(), e);
+            }
+        }
+    }
+
+    public void pause(int nodeId) {
+        if (this.nodeId != null && this.nodeId != nodeId) {
+            logger.warn("Attempted to pause PingJobScheduler with mismatched nodeId: expected {}, got {}", this.nodeId, nodeId);
+            return;
+        }
+        this.nodeId = null;
+
+        availabilityUpdateSchedule.clear();
+        dnsUpdateSchedule.clear();
+
+        logger.info("PingJobScheduler paused");
+    }
+
+    public synchronized void resume(int nodeId) {
+        if (this.nodeId != null) {
+            logger.warn("Attempted to resume PingJobScheduler with mismatched nodeId: expected {}, got {}", this.nodeId, nodeId);
+            return;
+        }
+
+        availabilityUpdateSchedule.replaceQueue(pingDao.getDomainUpdateSchedule(nodeId));
+        dnsUpdateSchedule.replaceQueue(pingDao.getDnsUpdateSchedule(nodeId));
+        dnsLastSync = Instant.now();
+        availabilityLastSync = Instant.now();
+
+        // Flag that we are running again
+        this.nodeId = nodeId;
+
+        notifyAll();
+        logger.info("PingJobScheduler resumed");
+    }
+
+    public synchronized void waitForResume() throws InterruptedException {
+        while (nodeId == null) {
+            wait();
+        }
+    }
+
+    private void availabilityJobConsumer() {
+        while (running) {
+            try {
+                Integer nid = nodeId;
+                if (nid == null) {
+                    waitForResume();
+                    continue;
+                }
+
+                long nextId = availabilityUpdateSchedule.next();
+                var data = pingDao.getHistoricalAvailabilityData(nextId);
+                if (data == null) {
+                    logger.warn("No availability data found for ID: {}", nextId);
+                    continue; // No data to process, skip this iteration
+                }
+
+                try {
+                    List<WritableModel> objects = switch (data) {
+                        case HistoricalAvailabilityData.JustDomainReference(DomainReference reference) -> {
+                            logger.info("Processing availability job for domain: {}", reference.domainName());
+                            yield httpPingService.pingDomain(reference, null, null);
+                        }
+                        case HistoricalAvailabilityData.JustAvailability(String domain, DomainAvailabilityRecord record) -> {
+                            logger.info("Availability check with no security info: {}", domain);
+                            yield httpPingService.pingDomain(
+                                    new DomainReference(record.domainId(), record.nodeId(), domain),
+                                    record,
+                                    null);
+                        }
+                        case HistoricalAvailabilityData.AvailabilityAndSecurity(String domain, DomainAvailabilityRecord availability, DomainSecurityRecord security) -> {
+                            logger.info("Availability check with full historical data: {}", domain);
+                            yield httpPingService.pingDomain(
+                                    new DomainReference(availability.domainId(), availability.nodeId(), domain),
+                                    availability,
+                                    security);
+                        }
+                    };
+
+                    pingDao.write(objects);
+
+                    // Re-schedule the next update time for the domain
+                    for (var object : objects) {
+                        var ts = object.nextUpdateTime();
+                        if (ts != null) {
+                            availabilityUpdateSchedule.add(nextId, ts);
+                            break;
+                        }
+                    }
+                }
+                catch (Exception e) {
+                    logger.error("Error processing availability job for domain: " + data.domain(), e);
+                }
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                logger.error("Availability job consumer interrupted", e);
+                break;
+            } catch (Exception e) {
+                logger.error("Error processing availability job", e);
+            }
+        }
+    }
+
+    private void dnsJobConsumer() {
+        while (running) {
+            try {
+                Integer nid = nodeId;
+                if (nid == null) {
+                    waitForResume();
+                    continue;
+                }
+
+                RootDomainReference ref = dnsUpdateSchedule.next();
+
+                try {
+                    List<WritableModel> objects = switch(ref) {
+                        case RootDomainReference.ById(long id) -> {
+                            var oldRecord = Objects.requireNonNull(pingDao.getDomainDnsRecord(id));
+                            yield dnsPingService.pingDomain(oldRecord.rootDomainName(), oldRecord);
+                        }
+                        case RootDomainReference.ByName(String name) -> {
+                            var oldRecord = pingDao.getDomainDnsRecord(name);
+                            yield dnsPingService.pingDomain(oldRecord.rootDomainName(), oldRecord);
+                        }
+                    };
+
+                    pingDao.write(objects);
+
+                    // Re-schedule the next update time for the domain
+                    for (var object : objects) {
+                        var ts = object.nextUpdateTime();
+                        if (ts != null) {
+                            dnsUpdateSchedule.add(ref, ts);
+                            break;
+                        }
+                    }
+                }
+                catch (Exception e) {
+                    logger.error("Error processing DNS job for domain: " + ref, e);
+                }
+
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                logger.error("DNS job consumer interrupted", e);
+                break;
+            } catch (Exception e) {
+                logger.error("Error processing DNS job", e);
+            }
+        }
+    }
+
+    private void syncAvailabilityJobs() {
+        try {
+            while (running) {
+
+                // If we are suspended, wait for resume
+                Integer nid = nodeId;
+                if (nid == null) {
+                    waitForResume();
+                    continue;
+                }
+
+                // Check if we need to refresh the availability data
+                Instant nextRefresh = availabilityLastSync.plus(Duration.ofHours(24));
+                if (Instant.now().isBefore(nextRefresh)) {
+                    Duration remaining = Duration.between(Instant.now(), nextRefresh);
+                    TimeUnit.MINUTES.sleep(Math.max(1, remaining.toMinutes()));
+                    continue;
+                }
+
+                availabilityUpdateSchedule.replaceQueue(pingDao.getDomainUpdateSchedule(nid));
+                availabilityLastSync = Instant.now();
+            }
+        }
+        catch (Exception e) {
+            logger.error("Error fetching new ping jobs", e);
+        }
+    }
+
+    private void syncDnsRecords() {
+        try {
+            while (running) {
+
+                Integer nid = nodeId;
+                if (nid == null) {
+                    waitForResume();
+                    continue; // re-fetch the records after resuming
+                }
+
+                // Check if we need to refresh the availability data
+                Instant nextRefresh = dnsLastSync.plus(Duration.ofHours(24));
+                if (Instant.now().isBefore(nextRefresh)) {
+                    Duration remaining = Duration.between(Instant.now(), nextRefresh);
+                    TimeUnit.MINUTES.sleep(Math.max(1, remaining.toMinutes()));
+                    continue;
+                }
+
+                dnsUpdateSchedule.replaceQueue(pingDao.getDnsUpdateSchedule(nid));
+                dnsLastSync = Instant.now();
+            }
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            logger.error("DNS job fetch interrupted", e);
+        }
+    }
+
+
+}

code/processes/ping-process/java/nu/marginalia/ping/PingMain.java

@@ -0,0 +1,167 @@
+package nu.marginalia.ping;
+
+import com.google.gson.Gson;
+import com.google.inject.Guice;
+import com.google.inject.Inject;
+import com.google.inject.Injector;
+import nu.marginalia.WmsaHome;
+import nu.marginalia.geoip.GeoIpDictionary;
+import nu.marginalia.mq.MessageQueueFactory;
+import nu.marginalia.mqapi.ProcessInboxNames;
+import nu.marginalia.mqapi.ping.PingRequest;
+import nu.marginalia.nodecfg.NodeConfigurationService;
+import nu.marginalia.nodecfg.model.NodeConfiguration;
+import nu.marginalia.process.ProcessConfiguration;
+import nu.marginalia.process.ProcessConfigurationModule;
+import nu.marginalia.process.ProcessMainClass;
+import nu.marginalia.service.discovery.ServiceRegistryIf;
+import nu.marginalia.service.module.DatabaseModule;
+import nu.marginalia.service.module.ServiceDiscoveryModule;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.security.Security;
+import java.util.List;
+
+public class PingMain extends ProcessMainClass {
+    private static final Logger log = LoggerFactory.getLogger(PingMain.class);
+
+    private final PingJobScheduler pingJobScheduler;
+    private final ServiceRegistryIf serviceRegistry;
+    private final NodeConfigurationService nodeConfigurationService;
+    private final int node;
+
+    private static final Logger logger = LoggerFactory.getLogger(PingMain.class);
+
+    @Inject
+    public PingMain(MessageQueueFactory messageQueueFactory,
+                    ProcessConfiguration config,
+                    Gson gson,
+                    PingJobScheduler pingJobScheduler,
+                    ServiceRegistryIf serviceRegistry,
+                    NodeConfigurationService nodeConfigurationService,
+                    ProcessConfiguration processConfiguration
+                    ) {
+        super(messageQueueFactory, config, gson, ProcessInboxNames.PING_INBOX);
+
+        this.pingJobScheduler = pingJobScheduler;
+        this.serviceRegistry = serviceRegistry;
+        this.nodeConfigurationService = nodeConfigurationService;
+        this.node = processConfiguration.node();
+    }
+
+    public void runPrimary() {
+        log.info("Starting PingMain...");
+
+        // Start the ping job scheduler
+        pingJobScheduler.start(true);
+
+        // Watch the crawler process to suspend/resume the ping job scheduler
+        try {
+            serviceRegistry.watchProcess("crawler", node, (running) -> {
+                if (running) {
+                    log.info("Crawler process is running, suspending ping job scheduler.");
+                    pingJobScheduler.pause(node);
+                } else {
+                    log.warn("Crawler process is not running, resuming ping job scheduler.");
+                    pingJobScheduler.resume(node);
+                }
+            });
+        }
+        catch (Exception e) {
+            throw new RuntimeException("Failed to watch crawler process", e);
+        }
+
+        log.info("PingMain started successfully.");
+    }
+
+
+    public void runSecondary() {
+        log.info("Starting PingMain...");
+
+        List<Integer> crawlerNodes = nodeConfigurationService.getAll()
+                .stream()
+                .filter(node -> !node.disabled())
+                .filter(node -> node.profile().permitBatchCrawl())
+                .map(NodeConfiguration::node)
+                .toList()
+                ;
+
+        // Start the ping job scheduler
+        pingJobScheduler.start(true);
+
+        // Watch the crawler process to suspend/resume the ping job scheduler
+        try {
+            serviceRegistry.watchProcessAnyNode("crawler", crawlerNodes, (running, n) -> {
+                if (running) {
+                    log.info("Crawler process is running on node {} taking over ", n);
+                    pingJobScheduler.resume(n);
+                } else {
+                    log.warn("Crawler process stopped, resuming ping job scheduler.");
+                    pingJobScheduler.pause(n);
+                }
+            });
+        }
+        catch (Exception e) {
+            throw new RuntimeException("Failed to watch crawler process", e);
+        }
+
+        log.info("PingMain started successfully.");
+    }
+
+    public static void main(String... args) throws Exception {
+        // Prevent Java from caching DNS lookups forever (filling up the system RAM as a result)
+        Security.setProperty("networkaddress.cache.ttl" , "3600");
+
+        // This must run *early*
+        System.setProperty("http.agent", WmsaHome.getUserAgent().uaString());
+
+        // If these aren't set properly, the JVM will hang forever on some requests
+        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");
+
+
+        Injector injector = Guice.createInjector(
+                new PingModule(),
+                new ServiceDiscoveryModule(),
+                new ProcessConfigurationModule("ping"),
+                new DatabaseModule(false)
+        );
+
+        GeoIpDictionary geoIpDictionary = injector.getInstance(GeoIpDictionary.class);
+
+        geoIpDictionary.waitReady(); // Ensure the GeoIpDictionary is ready before proceeding
+
+        PingMain main = injector.getInstance(PingMain.class);
+
+        var instructions = main.fetchInstructions(PingRequest.class);
+
+        try {
+            switch (instructions.value().runClass) {
+                case "primary":
+                    log.info("Running as primary node");
+                    main.runPrimary();
+                    break;
+                case "secondary":
+                    log.info("Running as secondary node");
+                    main.runSecondary();
+                    break;
+                default:
+                    throw new IllegalArgumentException("Invalid runClass: " + instructions.value().runClass);
+            }
+            for(;;);
+        }
+        catch (Throwable ex) {
+            logger.error("Error running ping process", ex);
+            instructions.err();
+        }
+    }
+
+}

code/processes/ping-process/java/nu/marginalia/ping/PingModule.java

@@ -0,0 +1,82 @@
+package nu.marginalia.ping;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Provides;
+import com.google.inject.name.Named;
+import nu.marginalia.ping.io.HttpClientProvider;
+import nu.marginalia.ping.model.ErrorClassification;
+import org.apache.hc.client5.http.classic.HttpClient;
+
+import java.security.NoSuchAlgorithmException;
+import java.time.Duration;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class PingModule extends AbstractModule {
+
+    public PingModule() throws NoSuchAlgorithmException {
+    }
+
+    public static PingIntervalsConfiguration createPingIntervalsConfiguration() {
+        Map<ErrorClassification, Duration> initialTimeouts = new HashMap<>();
+        Map<ErrorClassification, Duration> maxTimeouts = new HashMap<>();
+
+        for (var classification : ErrorClassification.values()) {
+            switch (classification) {
+                case CONNECTION_ERROR -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(15));
+                    maxTimeouts.put(classification, Duration.ofDays(1));
+                }
+                case HTTP_CLIENT_ERROR -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(15));
+                    maxTimeouts.put(classification, Duration.ofDays(1));
+                }
+                case HTTP_SERVER_ERROR -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(8));
+                    maxTimeouts.put(classification, Duration.ofHours(6));
+                }
+                case SSL_ERROR -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(45));
+                    maxTimeouts.put(classification, Duration.ofDays(1));
+                }
+                case DNS_ERROR -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(60));
+                    maxTimeouts.put(classification, Duration.ofDays(7));
+                }
+                case TIMEOUT -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(5));
+                    maxTimeouts.put(classification, Duration.ofHours(6));
+                }
+                case UNKNOWN -> {
+                    initialTimeouts.put(classification, Duration.ofMinutes(30));
+                    maxTimeouts.put(classification, Duration.ofDays(1));
+                }
+                case NONE -> {
+                    initialTimeouts.put(classification, Duration.ofHours(6));
+                    maxTimeouts.put(classification, Duration.ofDays(6));
+                }
+            }
+        }
+
+        return new PingIntervalsConfiguration(
+                Duration.ofHours(3),
+                initialTimeouts,
+                maxTimeouts
+        );
+    }
+
+    @Override
+    protected void configure() {
+        bind(HttpClient.class).toProvider(HttpClientProvider.class);
+
+        bind(PingIntervalsConfiguration.class).toInstance(createPingIntervalsConfiguration());
+    }
+
+    @Provides
+    @Named("ping.nameservers")
+    public List<String> providePingNameservers() {
+        // Google's public DNS servers currently have the best rate limiting
+        return List.of("8.8.8.8", "8.8.4.4");
+    }
+}