org.apache.flink.connector.mongodb.source.reader

Class MongoSourceReader<OUT>

java.lang.Object

org.apache.flink.connector.base.source.reader.SourceReaderBase<E,T,SplitT,SplitStateT>

org.apache.flink.connector.base.source.reader.SingleThreadMultiplexSourceReaderBase<org.bson.BsonDocument,OUT,MongoSourceSplit,MongoSourceSplitState>

org.apache.flink.connector.mongodb.source.reader.MongoSourceReader<OUT>

Type Parameters:

OUT - The output message type for flink.

All Implemented Interfaces:

AutoCloseable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.api.connector.source.SourceReader<OUT,MongoSourceSplit>

@Internal
public class MongoSourceReader<OUT>
extends org.apache.flink.connector.base.source.reader.SingleThreadMultiplexSourceReaderBase<org.bson.BsonDocument,OUT,MongoSourceSplit,MongoSourceSplitState>

The common mongo source reader for both ordered & unordered message consuming.

Field Summary

Fields inherited from class org.apache.flink.connector.base.source.reader.SourceReaderBase

config, context, eofRecordEvaluator, options, recordEmitter, splitFetcherManager

Constructor Summary

Constructors

Constructor and Description

MongoSourceReader(org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue<org.apache.flink.connector.base.source.reader.RecordsWithSplitIds<org.bson.BsonDocument>> elementQueue, java.util.function.Supplier<org.apache.flink.connector.base.source.reader.splitreader.SplitReader<org.bson.BsonDocument,MongoSourceSplit>> splitReaderSupplier, org.apache.flink.connector.base.source.reader.RecordEmitter<org.bson.BsonDocument,OUT,MongoSourceSplitState> recordEmitter, MongoSourceReaderContext readerContext)

Method Summary

Modifier and Type	Method and Description
protected MongoSourceSplitState	initializedState(MongoSourceSplit split)
protected void	onSplitFinished(Map<String,MongoSourceSplitState> finishedSplitIds)
void	start()
protected MongoSourceSplit	toSplitType(String splitId, MongoSourceSplitState splitState)

Methods inherited from class org.apache.flink.connector.base.source.reader.SourceReaderBase

addSplits, close, getNumberOfCurrentlyAssignedSplits, handleSourceEvents, isAvailable, notifyNoMoreSplits, pauseOrResumeSplits, pollNext, snapshotState

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.api.connector.source.SourceReader

notifyCheckpointComplete

Methods inherited from interface org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted

Constructor Detail

MongoSourceReader

public MongoSourceReader(org.apache.flink.connector.base.source.reader.synchronization.FutureCompletingBlockingQueue<org.apache.flink.connector.base.source.reader.RecordsWithSplitIds<org.bson.BsonDocument>> elementQueue,
                         java.util.function.Supplier<org.apache.flink.connector.base.source.reader.splitreader.SplitReader<org.bson.BsonDocument,MongoSourceSplit>> splitReaderSupplier,
                         org.apache.flink.connector.base.source.reader.RecordEmitter<org.bson.BsonDocument,OUT,MongoSourceSplitState> recordEmitter,
                         MongoSourceReaderContext readerContext)

Method Detail

start

public void start()

Specified by:

start in interface org.apache.flink.api.connector.source.SourceReader<OUT,MongoSourceSplit>

Overrides:

start in class org.apache.flink.connector.base.source.reader.SourceReaderBase<org.bson.BsonDocument,OUT,MongoSourceSplit,MongoSourceSplitState>

onSplitFinished

protected void onSplitFinished(Map<String,MongoSourceSplitState> finishedSplitIds)

Specified by:

onSplitFinished in class org.apache.flink.connector.base.source.reader.SourceReaderBase<org.bson.BsonDocument,OUT,MongoSourceSplit,MongoSourceSplitState>

initializedState

protected MongoSourceSplitState initializedState(MongoSourceSplit split)

Specified by:

initializedState in class org.apache.flink.connector.base.source.reader.SourceReaderBase<org.bson.BsonDocument,OUT,MongoSourceSplit,MongoSourceSplitState>

toSplitType

protected MongoSourceSplit toSplitType(String splitId,
                                       MongoSourceSplitState splitState)

Specified by:

toSplitType in class org.apache.flink.connector.base.source.reader.SourceReaderBase<org.bson.BsonDocument,OUT,MongoSourceSplit,MongoSourceSplitState>