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

Class ChangeStreamContinuationTokenHelper

java.lang.Object

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

public class ChangeStreamContinuationTokenHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
ChangeStreamContinuationTokenHelper()

Method Summary

Modifier and Type	Method	Description
static ChangeStreamContinuationToken	getTokenWithCorrectPartition(Range.ByteStringRange parentPartition, ChangeStreamContinuationToken token)	Return the continuation token with correct partition.

Methods inherited from class java.lang.Object

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

Constructor Details

ChangeStreamContinuationTokenHelper

public ChangeStreamContinuationTokenHelper()

Method Details

getTokenWithCorrectPartition

public static ChangeStreamContinuationToken getTokenWithCorrectPartition(Range.ByteStringRange parentPartition,
 ChangeStreamContinuationToken token)
                                                                  throws IllegalArgumentException

Return the continuation token with correct partition. The partition in the ChangeStreamContinuationToken for merges is not the correct partition (this is a backend bug that is being fixed). The partition currently represents the child partition, where the current partition should merge to.

For example: Partition [A, B) gets CloseStream to merge into [A, C). The ChangeStreamContinuationToken returned is { partition = [A, C), token = "token1" } . However, the correct ChangeStreamContinuationToken should be { partition = [A, B), token = "token1" }.

Parameters:

parentPartition - parent partition where the ChangeStreamContinuationToken is generated

token - ChangeStreamContinuationToken to be fixed

Returns:

ChangeStreamContinuationToken with correct partition field

Throws:

IllegalArgumentException