org.apache.flink.runtime.source.coordinator

类 SourceCoordinatorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

java.lang.Object

org.apache.flink.runtime.source.coordinator.SourceCoordinatorContext<SplitT>

类型参数:

SplitT - the type of the splits.

所有已实现的接口:

AutoCloseable, org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT>, org.apache.flink.api.connector.source.SupportsIntermediateNoMoreSplits

@Internal
public class SourceCoordinatorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>
extends Object
implements org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT>, org.apache.flink.api.connector.source.SupportsIntermediateNoMoreSplits, AutoCloseable

A context class for the OperatorCoordinator. Compared with SplitEnumeratorContext this class allows interaction with state and sending OperatorEvent to the SourceOperator while SplitEnumeratorContext only allows sending SourceEvent.

The context serves a few purposes:

• Information provider - The context provides necessary information to the enumerator for it to know what is the status of the source readers and their split assignments. These information allows the split enumerator to do the coordination.
• Action taker - The context also provides a few actions that the enumerator can take to carry out the coordination. So far there are two actions: 1) assign splits to the source readers. and 2) sens a custom SourceEvents to the source readers.
• Thread model enforcement - The context ensures that all the manipulations to the coordinator state are handled by the same thread.

构造器概要

构造器

构造器和说明
SourceCoordinatorContext(SourceCoordinatorProvider.CoordinatorExecutorThreadFactory coordinatorThreadFactory, int numWorkerThreads, OperatorCoordinator.Context operatorCoordinatorContext, org.apache.flink.core.io.SimpleVersionedSerializer<SplitT> splitSerializer, boolean supportsConcurrentExecutionAttempts)

方法概要

限定符和类型	方法和说明
void	assignSplits(org.apache.flink.api.connector.source.SplitsAssignment<SplitT> assignment)
<T> void	callAsync(Callable<T> callable, java.util.function.BiConsumer<T,Throwable> handler)
<T> void	callAsync(Callable<T> callable, java.util.function.BiConsumer<T,Throwable> handler, long initialDelay, long period)
void	close()
int	currentParallelism()
org.apache.flink.metrics.groups.SplitEnumeratorMetricGroup	metricGroup()
Map<Integer,org.apache.flink.api.connector.source.ReaderInfo>	registeredReaders()
Map<Integer,Map<Integer,org.apache.flink.api.connector.source.ReaderInfo>>	registeredReadersOfAttempts()
void	runInCoordinatorThread(Runnable runnable) If the runnable throws an Exception, the corresponding job is failed.
void	sendEventToSourceReader(int subtaskId, int attemptNumber, org.apache.flink.api.connector.source.SourceEvent event)
void	sendEventToSourceReader(int subtaskId, org.apache.flink.api.connector.source.SourceEvent event)
void	signalIntermediateNoMoreSplits(int subtask)
void	signalNoMoreSplits(int subtask)

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.SplitEnumeratorContext

assignSplit

构造器详细资料

SourceCoordinatorContext

public SourceCoordinatorContext(SourceCoordinatorProvider.CoordinatorExecutorThreadFactory coordinatorThreadFactory,
                                int numWorkerThreads,
                                OperatorCoordinator.Context operatorCoordinatorContext,
                                org.apache.flink.core.io.SimpleVersionedSerializer<SplitT> splitSerializer,
                                boolean supportsConcurrentExecutionAttempts)

方法详细资料

metricGroup

public org.apache.flink.metrics.groups.SplitEnumeratorMetricGroup metricGroup()

指定者:

metricGroup 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

sendEventToSourceReader

public void sendEventToSourceReader(int subtaskId,
                                    org.apache.flink.api.connector.source.SourceEvent event)

指定者:

sendEventToSourceReader 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

sendEventToSourceReader

public void sendEventToSourceReader(int subtaskId,
                                    int attemptNumber,
                                    org.apache.flink.api.connector.source.SourceEvent event)

指定者:

sendEventToSourceReader 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

currentParallelism

public int currentParallelism()

指定者:

currentParallelism 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

registeredReaders

public Map<Integer,org.apache.flink.api.connector.source.ReaderInfo> registeredReaders()

指定者:

registeredReaders 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

registeredReadersOfAttempts

public Map<Integer,Map<Integer,org.apache.flink.api.connector.source.ReaderInfo>> registeredReadersOfAttempts()

指定者:

registeredReadersOfAttempts 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

assignSplits

public void assignSplits(org.apache.flink.api.connector.source.SplitsAssignment<SplitT> assignment)

指定者:

assignSplits 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

signalNoMoreSplits

public void signalNoMoreSplits(int subtask)

指定者:

signalNoMoreSplits 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

signalIntermediateNoMoreSplits

public void signalIntermediateNoMoreSplits(int subtask)

指定者:

signalIntermediateNoMoreSplits 在接口中 org.apache.flink.api.connector.source.SupportsIntermediateNoMoreSplits

callAsync

public <T> void callAsync(Callable<T> callable,
                          java.util.function.BiConsumer<T,Throwable> handler,
                          long initialDelay,
                          long period)

指定者:

callAsync 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

callAsync

public <T> void callAsync(Callable<T> callable,
                          java.util.function.BiConsumer<T,Throwable> handler)

指定者:

callAsync 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

runInCoordinatorThread

public void runInCoordinatorThread(Runnable runnable)

If the runnable throws an Exception, the corresponding job is failed.

指定者:

runInCoordinatorThread 在接口中 org.apache.flink.api.connector.source.SplitEnumeratorContext<SplitT extends org.apache.flink.api.connector.source.SourceSplit>

close

public void close()
           throws InterruptedException

指定者:

close 在接口中 AutoCloseable

抛出:

InterruptedException