tech.ydb.topic.read.impl

Class SyncReaderImpl

java.lang.Object

tech.ydb.topic.impl.GrpcStreamRetrier

tech.ydb.topic.read.impl.ReaderImpl

tech.ydb.topic.read.impl.SyncReaderImpl

All Implemented Interfaces:

SyncReader

public class SyncReaderImpl
extends ReaderImpl
implements SyncReader

Author:

Nikolay Perfilov

Nested Class Summary

Nested classes/interfaces inherited from class tech.ydb.topic.read.impl.ReaderImpl

ReaderImpl.ReadSessionImpl

Field Summary

Fields inherited from class tech.ydb.topic.impl.GrpcStreamRetrier

id, isReconnecting, isStopped, reconnectCounter

Constructor Summary

Constructors

Constructor and Description
SyncReaderImpl(TopicRpc topicRpc, ReaderSettings settings)

Method Summary

Modifier and Type	Method and Description
protected void	handleClosePartitionSession(PartitionSession partitionSession)
protected void	handleCommitResponse(long committedOffset, PartitionSession partitionSession)
protected CompletableFuture<Void>	handleDataReceivedEvent(DataReceivedEvent event)
protected void	handleStartPartitionSessionRequest(tech.ydb.proto.topic.YdbTopic.StreamReadMessage.StartPartitionSessionRequest request, PartitionSession partitionSession, Consumer<StartPartitionSessionSettings> confirmCallback)
protected void	handleStopPartitionSession(tech.ydb.proto.topic.YdbTopic.StreamReadMessage.StopPartitionSessionRequest request, PartitionSession partitionSession, Runnable confirmCallback)
void	init() Initialize reading in the background.
void	initAndWait() Initialize internal threads and wait for server init response.
Message	receive(ReceiveSettings receiveSettings) Receive a Message.
Message	receiveInternal(ReceiveSettings receiveSettings, long timeout, TimeUnit unit)
void	shutdown() Stops internal threads and makes cleanup in background.

Methods inherited from class tech.ydb.topic.read.impl.ReaderImpl

getLogger, getStreamName, initImpl, onShutdown, onStreamReconnect, sendUpdateOffsetsInTransaction

Methods inherited from class tech.ydb.topic.impl.GrpcStreamRetrier

generateRandomId, onSessionClosed, shutdownImpl, shutdownImpl

Methods inherited from class java.lang.Object

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

Methods inherited from interface tech.ydb.topic.read.SyncReader

receive, receive

Constructor Detail

SyncReaderImpl

public SyncReaderImpl(TopicRpc topicRpc,
                      ReaderSettings settings)

Method Detail

init

public void init()

Description copied from interface: SyncReader

Initialize reading in the background. Non-blocking

Specified by:

init in interface SyncReader

initAndWait

public void initAndWait()

Description copied from interface: SyncReader

Initialize internal threads and wait for server init response. Blocking

Specified by:

initAndWait in interface SyncReader

receiveInternal

@Nullable
public Message receiveInternal(ReceiveSettings receiveSettings,
                                         long timeout,
                                         TimeUnit unit)
                                  throws InterruptedException

Throws:

InterruptedException

receive

public Message receive(ReceiveSettings receiveSettings)
                throws InterruptedException

Description copied from interface: SyncReader

Receive a Message. Blocks until a Message is received.

Specified by:

receive in interface SyncReader

Parameters:

receiveSettings - settings for receiving a Message

Returns:

returns a Message, or null if the specified timeout time elapses before a message is available

Throws:

InterruptedException

handleDataReceivedEvent

protected CompletableFuture<Void> handleDataReceivedEvent(DataReceivedEvent event)

Specified by:

handleDataReceivedEvent in class ReaderImpl

handleCommitResponse

protected void handleCommitResponse(long committedOffset,
                                    PartitionSession partitionSession)

Specified by:

handleCommitResponse in class ReaderImpl

handleStartPartitionSessionRequest

protected void handleStartPartitionSessionRequest(tech.ydb.proto.topic.YdbTopic.StreamReadMessage.StartPartitionSessionRequest request,
                                                  PartitionSession partitionSession,
                                                  Consumer<StartPartitionSessionSettings> confirmCallback)

Specified by:

handleStartPartitionSessionRequest in class ReaderImpl

handleStopPartitionSession

protected void handleStopPartitionSession(tech.ydb.proto.topic.YdbTopic.StreamReadMessage.StopPartitionSessionRequest request,
                                          PartitionSession partitionSession,
                                          Runnable confirmCallback)

Specified by:

handleStopPartitionSession in class ReaderImpl

handleClosePartitionSession

protected void handleClosePartitionSession(PartitionSession partitionSession)

Specified by:

handleClosePartitionSession in class ReaderImpl

shutdown

public void shutdown()

Description copied from interface: SyncReader

Stops internal threads and makes cleanup in background. Blocking

Specified by:

shutdown in interface SyncReader