org.apache.flink.connector.base.source.hybrid

类 HybridSourceReader<T>

java.lang.Object

org.apache.flink.connector.base.source.hybrid.HybridSourceReader<T>

所有已实现的接口:

AutoCloseable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

public class HybridSourceReader<T>
extends Object
implements org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

Hybrid source reader that delegates to the actual source reader.

This reader processes splits from a sequence of sources as determined by the enumerator. The current source is provided with SwitchSourceEvent and the reader does not require upfront knowledge of the number and order of sources. At a given point in time one underlying reader is active.

When the underlying reader has consumed all input for a source, HybridSourceReader sends SourceReaderFinishedEvent to the coordinator.

This reader does not make assumptions about the order in which sources are activated. When recovering from a checkpoint it may start processing splits for a previous source, which is indicated via SwitchSourceEvent.

构造器概要

构造器

构造器和说明
HybridSourceReader(org.apache.flink.api.connector.source.SourceReaderContext readerContext)

方法概要

限定符和类型	方法和说明
void	addSplits(List<HybridSourceSplit> splits)
void	close()
void	handleSourceEvents(org.apache.flink.api.connector.source.SourceEvent sourceEvent)
CompletableFuture<Void>	isAvailable()
void	notifyCheckpointAborted(long checkpointId)
void	notifyCheckpointComplete(long checkpointId)
void	notifyNoMoreSplits()
org.apache.flink.core.io.InputStatus	pollNext(org.apache.flink.api.connector.source.ReaderOutput output)
List<HybridSourceSplit>	snapshotState(long checkpointId)
void	start()

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.api.connector.source.SourceReader

pauseOrResumeSplits

构造器详细资料

HybridSourceReader

public HybridSourceReader(org.apache.flink.api.connector.source.SourceReaderContext readerContext)

方法详细资料

start

public void start()

指定者:

start 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

pollNext

public org.apache.flink.core.io.InputStatus pollNext(org.apache.flink.api.connector.source.ReaderOutput output)
                                              throws Exception

指定者:

pollNext 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

抛出:

Exception

snapshotState

public List<HybridSourceSplit> snapshotState(long checkpointId)

指定者:

snapshotState 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

notifyCheckpointComplete

public void notifyCheckpointComplete(long checkpointId)
                              throws Exception

指定者:

notifyCheckpointComplete 在接口中 org.apache.flink.api.common.state.CheckpointListener

指定者:

notifyCheckpointComplete 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

抛出:

Exception

notifyCheckpointAborted

public void notifyCheckpointAborted(long checkpointId)
                             throws Exception

指定者:

notifyCheckpointAborted 在接口中 org.apache.flink.api.common.state.CheckpointListener

抛出:

Exception

isAvailable

public CompletableFuture<Void> isAvailable()

指定者:

isAvailable 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

addSplits

public void addSplits(List<HybridSourceSplit> splits)

指定者:

addSplits 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

notifyNoMoreSplits

public void notifyNoMoreSplits()

指定者:

notifyNoMoreSplits 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

handleSourceEvents

public void handleSourceEvents(org.apache.flink.api.connector.source.SourceEvent sourceEvent)

指定者:

handleSourceEvents 在接口中 org.apache.flink.api.connector.source.SourceReader<T,HybridSourceSplit>

close

public void close()
           throws Exception

指定者:

close 在接口中 AutoCloseable

抛出:

Exception