Package org.apache.bookkeeper.mledger.impl

Class LedgerMetadataUtils

java.lang.Object

org.apache.bookkeeper.mledger.impl.LedgerMetadataUtils

public final class LedgerMetadataUtils
extends Object

Utilities for managing BookKeeper Ledgers custom metadata.

Method Summary

Modifier and Type	Method	Description
static Map<String,byte[]>	buildMetadataForCompactedLedger(String compactedTopic, byte[] compactedToMessageId)	Build additional metadata for a CompactedLedger.
static Map<String,byte[]>	buildMetadataForDelayedIndexBucket(String bucketKey, String topicName, String cursorName)	Build additional metadata for a delayed message index bucket.
static Map<String,byte[]>	buildMetadataForSchema(String schemaId)	Build additional metadata for a Schema.

Methods inherited from class java.lang.Object

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

Method Details

buildMetadataForCompactedLedger

public static Map<String,byte[]> buildMetadataForCompactedLedger(String compactedTopic,
 byte[] compactedToMessageId)

Build additional metadata for a CompactedLedger.

Parameters:

compactedTopic - reference to the compacted topic.

compactedToMessageId - last mesasgeId.

Returns:

an immutable map which describes the compacted ledger

buildMetadataForSchema

public static Map<String,byte[]> buildMetadataForSchema(String schemaId)

Build additional metadata for a Schema.

Parameters:

schemaId - id of the schema

Returns:

an immutable map which describes the schema

buildMetadataForDelayedIndexBucket

public static Map<String,byte[]> buildMetadataForDelayedIndexBucket(String bucketKey,
 String topicName,
 String cursorName)

Build additional metadata for a delayed message index bucket.

Parameters:

bucketKey - key of the delayed message bucket

topicName - name of the topic

cursorName - name of the cursor

Returns:

an immutable map which describes the schema