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Code Issues 4 Pull Requests Releases Wiki Activity

Pagination : avoid breaking timeline when paginating twice from same token (race condition)

This commit is contained in:
ganfra 2019-07-09 14:44:59 +02:00
parent 8777d13d8b
commit b5650b2b8f
1 changed files with 6 additions and 0 deletions
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6
matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/TokenChunkEventPersistor.kt
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@ -128,6 +128,12 @@ internal class TokenChunkEventPersistor @Inject constructor(private val monarchy
nextToken = receivedChunk.start
prevToken = receivedChunk.end
}

if (ChunkEntity.find(realm, roomId, nextToken = nextToken) != null || ChunkEntity.find(realm, roomId, prevToken = prevToken) != null) {
Timber.v("Already inserted - SKIP")
return@tryTransactionSync
}

val prevChunk = ChunkEntity.find(realm, roomId, nextToken = prevToken)
val nextChunk = ChunkEntity.find(realm, roomId, prevToken = nextToken)