Package com.github.ambry.cloud.azure

Class CosmosUpdateTimeBasedReplicationFeed

java.lang.Object

com.github.ambry.cloud.azure.CosmosUpdateTimeBasedReplicationFeed

All Implemented Interfaces:

AzureReplicationFeed, java.io.Closeable, java.lang.AutoCloseable

public class CosmosUpdateTimeBasedReplicationFeed
extends java.lang.Object
implements AzureReplicationFeed

The replication feed that provides next list of blobs to replicate from Azure and corresponding FindToken using Cosmos update time field.

Nested Class Summary

Nested classes/interfaces inherited from interface com.github.ambry.cloud.azure.AzureReplicationFeed

AzureReplicationFeed.FeedType

Constructor Summary

Constructors

Constructor	Description
CosmosUpdateTimeBasedReplicationFeed(CosmosDataAccessor cosmosDataAccessor, AzureMetrics azureMetrics, int queryBatchSize)	Constructor for CosmosUpdateTimeBasedReplicationFeed object.

Method Summary

Modifier and Type	Method	Description
void	close()
FindResult	getNextEntriesAndUpdatedToken(com.github.ambry.replication.FindToken curfindToken, long maxTotalSizeOfEntries, java.lang.String partitionPath)	Returns an ordered sequenced list of blobs within the specified partition and updated FindToken, such that total size of all blobs in the list are less or equal to maxTotalSizeOfEntries.

Methods inherited from class java.lang.Object

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

Constructor Detail

CosmosUpdateTimeBasedReplicationFeed

public CosmosUpdateTimeBasedReplicationFeed(CosmosDataAccessor cosmosDataAccessor,
                                            AzureMetrics azureMetrics,
                                            int queryBatchSize)

Constructor for CosmosUpdateTimeBasedReplicationFeed object.

Parameters:

cosmosDataAccessor - CosmosDataAccessor object to run Cosmos change feed queries.

azureMetrics - AzureMetrics object.

queryBatchSize - batch size for each find since query.

Method Detail

getNextEntriesAndUpdatedToken

public FindResult getNextEntriesAndUpdatedToken(com.github.ambry.replication.FindToken curfindToken,
                                                long maxTotalSizeOfEntries,
                                                java.lang.String partitionPath)
                                         throws com.microsoft.azure.cosmosdb.DocumentClientException

Description copied from interface: AzureReplicationFeed

Returns an ordered sequenced list of blobs within the specified partition and updated FindToken, such that total size of all blobs in the list are less or equal to maxTotalSizeOfEntries. This method should return at least one blob, if exists, after curfindToken, irrespective of maxTotalSizeOfEntries requirement.

Specified by:

getNextEntriesAndUpdatedToken in interface AzureReplicationFeed

Parameters:

curfindToken - current FindToken object that acts as a bookmark to return blobs after.

maxTotalSizeOfEntries - max total size of all the CloudBlobMetadata objects returned.

partitionPath - partition of the blobs.

Returns:

FindResult instance that contains updated FindToken object which can act as a bookmark for subsequent requests, and List of CloudBlobMetadata entries.

Throws:

com.microsoft.azure.cosmosdb.DocumentClientException

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable