cn.tenmg.cdc.log.connectors.base.source.assigner

类 StreamSplitAssigner

java.lang.Object

cn.tenmg.cdc.log.connectors.base.source.assigner.StreamSplitAssigner

所有已实现的接口:

SplitAssigner

public class StreamSplitAssigner
extends Object
implements SplitAssigner

Assigner for stream split.

构造器概要

构造器

构造器和说明
StreamSplitAssigner(SourceConfig sourceConfig, DataSourceDialect dialect, OffsetFactory offsetFactory)
StreamSplitAssigner(SourceConfig sourceConfig, StreamPendingSplitsState checkpoint, DataSourceDialect dialect, OffsetFactory offsetFactory)

方法概要

限定符和类型	方法和说明
void	addSplits(Collection<SourceSplitBase> 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.
StreamSplit	createStreamSplit()
List<FinishedSnapshotSplitInfo>	getFinishedSplitInfos() Gets the finished splits information.
Optional<SourceSplitBase>	getNext() Gets the next split.
void	notifyCheckpointComplete(long checkpointId) Notifies the listener that the checkpoint with the given checkpointId completed and was committed.
void	onFinishedSplits(Map<String,Offset> splitFinishedOffsets) Callback to handle the finished splits with finished binlog offset.
void	open() Called to open the assigner to acquire any resources, like threads or network connections.
PendingSplitsState	snapshotState(long checkpointId) Creates a snapshot of the state of this split assigner, to be stored in a checkpoint.
boolean	waitingForFinishedSplits() Whether the split assigner is still waiting for callback of finished splits, i.e.

从类继承的方法 java.lang.Object

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

构造器详细资料

StreamSplitAssigner

public StreamSplitAssigner(SourceConfig sourceConfig,
                           DataSourceDialect dialect,
                           OffsetFactory offsetFactory)

StreamSplitAssigner

public StreamSplitAssigner(SourceConfig sourceConfig,
                           StreamPendingSplitsState checkpoint,
                           DataSourceDialect dialect,
                           OffsetFactory offsetFactory)

方法详细资料

open

public void open()

从接口复制的说明: SplitAssigner

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

指定者:

open 在接口中 SplitAssigner

getNext

public Optional<SourceSplitBase> getNext()

从接口复制的说明: SplitAssigner

Gets the next split.

When this method returns an empty Optional, then the set of splits is assumed to be done and the source will finish once the readers finished their current splits.

指定者:

getNext 在接口中 SplitAssigner

waitingForFinishedSplits

public boolean waitingForFinishedSplits()

从接口复制的说明: SplitAssigner

Whether the split assigner is still waiting for callback of finished splits, i.e. SplitAssigner.onFinishedSplits(Map).

指定者:

waitingForFinishedSplits 在接口中 SplitAssigner

getFinishedSplitInfos

public List<FinishedSnapshotSplitInfo> getFinishedSplitInfos()

从接口复制的说明: SplitAssigner

Gets the finished splits information. This is useful meta data to generate a binlog split that considering finished snapshot splits.

指定者:

getFinishedSplitInfos 在接口中 SplitAssigner

onFinishedSplits

public void onFinishedSplits(Map<String,Offset> splitFinishedOffsets)

从接口复制的说明: SplitAssigner

Callback to handle the finished splits with finished binlog offset. This is useful for determine when to generate binlog split and what binlog split to generate.

指定者:

onFinishedSplits 在接口中 SplitAssigner

addSplits

public void addSplits(Collection<SourceSplitBase> splits)

从接口复制的说明: SplitAssigner

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.

指定者:

addSplits 在接口中 SplitAssigner

snapshotState

public PendingSplitsState snapshotState(long checkpointId)

从接口复制的说明: SplitAssigner

Creates a snapshot of the state of this split assigner, to be stored in a checkpoint.

The snapshot should contain the latest state of the assigner: It should assume that all operations that happened before the snapshot have successfully completed. For example all splits assigned to readers via SplitAssigner.getNext() don't need to be included in the snapshot anymore.

This method takes the ID of the checkpoint for which the state is snapshotted. Most implementations should be able to ignore this parameter, because for the contents of the snapshot, it doesn't matter for which checkpoint it gets created. This parameter can be interesting for source connectors with external systems where those systems are themselves aware of checkpoints; for example in cases where the enumerator notifies that system about a specific checkpoint being triggered.

指定者:

snapshotState 在接口中 SplitAssigner

参数:

checkpointId - The ID of the checkpoint for which the snapshot is created.

返回:

an object containing the state of the split enumerator.

notifyCheckpointComplete

public void notifyCheckpointComplete(long checkpointId)

从接口复制的说明: SplitAssigner

Notifies the listener that the checkpoint with the given checkpointId completed and was committed.

指定者:

notifyCheckpointComplete 在接口中 SplitAssigner

另请参阅:

CheckpointListener.notifyCheckpointComplete(long)

close

public void close()

从接口复制的说明: SplitAssigner

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

指定者:

close 在接口中 SplitAssigner

createStreamSplit

public StreamSplit createStreamSplit()