org.apache.flink.connector.mongodb.source.enumerator.assigner

Class MongoScanSplitAssigner

java.lang.Object

org.apache.flink.connector.mongodb.source.enumerator.assigner.MongoScanSplitAssigner

All Implemented Interfaces:

MongoSplitAssigner

@Internal
public class MongoScanSplitAssigner
extends Object
implements MongoSplitAssigner

The split assigner for MongoScanSourceSplit.

Constructor Summary

Constructors

Constructor and Description
MongoScanSplitAssigner(MongoConnectionOptions connectionOptions, MongoReadOptions readOptions, MongoSourceEnumState sourceEnumState)

Method Summary

Modifier and Type	Method and Description
void	addSplitsBack(Collection<MongoSourceSplit> splits) Adds a set of splits to this assigner.
void	close() Called to close the assigner, in case it holds on to any resources, like threads or network connections.
Optional<MongoSourceSplit>	getNext() Gets the next split to assign to MongoSourceSplitReader when MongoSourceEnumerator receives a split request, until there are MongoSplitAssigner.noMoreSplits().
boolean	noMoreSplits() Return whether there are no more splits.
void	open() Called to open the assigner to acquire any resources, like threads or network connections.
MongoSourceEnumState	snapshotState(long checkpointId) Snapshot the current assign state into checkpoint.

Methods inherited from class java.lang.Object

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

Constructor Detail

MongoScanSplitAssigner

public MongoScanSplitAssigner(MongoConnectionOptions connectionOptions,
                              MongoReadOptions readOptions,
                              MongoSourceEnumState sourceEnumState)

Method Detail

open

public void open()

Description copied from interface: MongoSplitAssigner

Called to open the assigner to acquire any resources, like threads or network connections.

Specified by:

open in interface MongoSplitAssigner

getNext

public Optional<MongoSourceSplit> getNext()

Description copied from interface: MongoSplitAssigner

Gets the next split to assign to MongoSourceSplitReader when MongoSourceEnumerator receives a split request, until there are MongoSplitAssigner.noMoreSplits().

Specified by:

getNext in interface MongoSplitAssigner

addSplitsBack

public void addSplitsBack(Collection<MongoSourceSplit> splits)

Description copied from interface: MongoSplitAssigner

Adds a set of splits to this assigner. This happens for example when some split processing failed and the splits need to be re-added.

Specified by:

addSplitsBack in interface MongoSplitAssigner

snapshotState

public MongoSourceEnumState snapshotState(long checkpointId)

Description copied from interface: MongoSplitAssigner

Snapshot the current assign state into checkpoint.

Specified by:

snapshotState in interface MongoSplitAssigner

noMoreSplits

public boolean noMoreSplits()

Description copied from interface: MongoSplitAssigner

Return whether there are no more splits.

Specified by:

noMoreSplits in interface MongoSplitAssigner

close

public void close()
           throws IOException

Description copied from interface: MongoSplitAssigner

Called to close the assigner, in case it holds on to any resources, like threads or network connections.

Specified by:

close in interface MongoSplitAssigner

Throws:

IOException