io.debezium.connector.mongodb

Class Replicator.BufferableRecorder

java.lang.Object

io.debezium.connector.mongodb.Replicator.BufferableRecorder

All Implemented Interfaces:

BlockingConsumer<org.apache.kafka.connect.source.SourceRecord>

Enclosing class:

Replicator

protected final class Replicator.BufferableRecorder
extends Object
implements BlockingConsumer<org.apache.kafka.connect.source.SourceRecord>

A BlockingConsumer implementation that will buffer the last source record only during an initial sync, so that when the initial sync is complete the last record's offset can be updated to reflect the completion of the initial sync before it is flushed.

Field Summary

Fields

Modifier and Type	Field and Description
private BlockingConsumer<org.apache.kafka.connect.source.SourceRecord>	actual
private BufferedBlockingConsumer<org.apache.kafka.connect.source.SourceRecord>	buffered
private BlockingConsumer<org.apache.kafka.connect.source.SourceRecord>	current

Constructor Summary

Constructors

Constructor and Description
BufferableRecorder(BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> actual)

Method Summary

Modifier and Type	Method and Description
void	accept(org.apache.kafka.connect.source.SourceRecord t)
protected void	startBuffering() Start buffering the most recently source record so it can be updated before the initial sync is completed.
protected void	stopBuffering(Map<String,?> newOffset) Stop buffering source records, and flush any buffered records by replacing their offset with the provided offset.

Methods inherited from class java.lang.Object

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

Field Detail

actual

private final BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> actual

buffered

private BufferedBlockingConsumer<org.apache.kafka.connect.source.SourceRecord> buffered

current

private volatile BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> current

Constructor Detail

BufferableRecorder

public BufferableRecorder(BlockingConsumer<org.apache.kafka.connect.source.SourceRecord> actual)

Method Detail

startBuffering

protected void startBuffering()
                       throws InterruptedException

Start buffering the most recently source record so it can be updated before the initial sync is completed.

Throws:

InterruptedException - if the thread is interrupted while waiting for any existing record to be flushed

stopBuffering

protected void stopBuffering(Map<String,?> newOffset)
                      throws InterruptedException

Stop buffering source records, and flush any buffered records by replacing their offset with the provided offset. Note that this only replaces the record's offset and does not change the value of the record, which may contain information about the snapshot.

Parameters:

newOffset - the offset that reflects that the snapshot has been completed; may not be null

Throws:

InterruptedException - if the thread is interrupted while waiting for the new record to be flushed

accept

public void accept(org.apache.kafka.connect.source.SourceRecord t)
            throws InterruptedException

Specified by:

accept in interface BlockingConsumer<org.apache.kafka.connect.source.SourceRecord>

Throws:

InterruptedException