org.apache.beam.sdk.io.gcp.bigtable.changestreams.dao

Class ChangeStreamDao

java.lang.Object

org.apache.beam.sdk.io.gcp.bigtable.changestreams.dao.ChangeStreamDao

@Internal
public class ChangeStreamDao
extends java.lang.Object

Data access object to list and read stream partitions of a table.

Constructor Summary

Constructors

Constructor and Description
ChangeStreamDao(com.google.cloud.bigtable.data.v2.BigtableDataClient dataClient, java.lang.String tableId)

Method Summary

Modifier and Type	Method and Description
java.util.List<com.google.cloud.bigtable.data.v2.models.Range.ByteStringRange>	generateInitialChangeStreamPartitions() Returns the result from GenerateInitialChangeStreamPartitions API.
com.google.api.gax.rpc.ServerStream<com.google.cloud.bigtable.data.v2.models.ChangeStreamRecord>	readChangeStreamPartition(PartitionRecord partition, StreamProgress streamProgress, Instant endTime, Duration heartbeatDuration) Streams a partition.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChangeStreamDao

public ChangeStreamDao(com.google.cloud.bigtable.data.v2.BigtableDataClient dataClient,
                       java.lang.String tableId)

Method Detail

generateInitialChangeStreamPartitions

public java.util.List<com.google.cloud.bigtable.data.v2.models.Range.ByteStringRange> generateInitialChangeStreamPartitions()

Returns the result from GenerateInitialChangeStreamPartitions API.

Returns:

list of StreamPartition

readChangeStreamPartition

public com.google.api.gax.rpc.ServerStream<com.google.cloud.bigtable.data.v2.models.ChangeStreamRecord> readChangeStreamPartition(PartitionRecord partition,
                                                                                                                                  StreamProgress streamProgress,
                                                                                                                                  @Nullable
                                                                                                                                  Instant endTime,
                                                                                                                                  Duration heartbeatDuration)
                                                                                                                           throws java.io.IOException

Streams a partition.

Parameters:

partition - the partition to stream

streamProgress - may contain a continuation token for the stream request

endTime - time to end the stream, may be null

heartbeatDuration - period between heartbeat messages

Returns:

stream of ReadChangeStreamResponse

Throws:

java.io.IOException - if the stream could not be started