org.apache.kafka.connect.mirror

Class DefaultReplicationPolicy

java.lang.Object

org.apache.kafka.connect.mirror.DefaultReplicationPolicy

All Implemented Interfaces:

org.apache.kafka.common.Configurable, ReplicationPolicy

Direct Known Subclasses:

IdentityReplicationPolicy

public class DefaultReplicationPolicy
extends Object
implements ReplicationPolicy, org.apache.kafka.common.Configurable

Default implementation of ReplicationPolicy which prepends the source cluster alias to remote topic names. For example, if the source cluster alias is "us-west", topics created in the target cluster will be named us-west.<TOPIC>. The separator is customizable by setting SEPARATOR_CONFIG and defaults to a period.

Field Summary

Fields

Modifier and Type	Field and Description
static String	INTERNAL_TOPIC_SEPARATOR_ENABLED_CONFIG
static Boolean	INTERNAL_TOPIC_SEPARATOR_ENABLED_DEFAULT
static String	SEPARATOR_CONFIG
static String	SEPARATOR_DEFAULT

Constructor Summary

Constructors

Constructor and Description
DefaultReplicationPolicy()

Method Summary

Modifier and Type	Method and Description
String	checkpointsTopic(String clusterAlias) Returns the name of the checkpoints topic for given cluster alias.
void	configure(Map<String,?> props)
String	formatRemoteTopic(String sourceClusterAlias, String topic) Returns the remote topic name for the given topic and source cluster alias.
boolean	isCheckpointsTopic(String topic) Returns true if the topic is a checkpoints topic.
boolean	isMM2InternalTopic(String topic) Returns true if the topic is one of MirrorMaker internal topics.
String	offsetSyncsTopic(String clusterAlias) Returns the name of the offset-syncs topic for given cluster alias.
String	topicSource(String topic) Returns the source cluster alias of given topic.
String	upstreamTopic(String topic) Return the name of the given topic on the source cluster.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.kafka.connect.mirror.ReplicationPolicy

heartbeatsTopic, isHeartbeatsTopic, isInternalTopic, originalTopic

Field Detail

SEPARATOR_CONFIG

public static final String SEPARATOR_CONFIG

See Also:

Constant Field Values

SEPARATOR_DEFAULT

public static final String SEPARATOR_DEFAULT

See Also:

Constant Field Values

INTERNAL_TOPIC_SEPARATOR_ENABLED_CONFIG

public static final String INTERNAL_TOPIC_SEPARATOR_ENABLED_CONFIG

See Also:

Constant Field Values

INTERNAL_TOPIC_SEPARATOR_ENABLED_DEFAULT

public static final Boolean INTERNAL_TOPIC_SEPARATOR_ENABLED_DEFAULT

Constructor Detail

DefaultReplicationPolicy

public DefaultReplicationPolicy()

Method Detail

configure

public void configure(Map<String,?> props)

Specified by:

configure in interface org.apache.kafka.common.Configurable

formatRemoteTopic

public String formatRemoteTopic(String sourceClusterAlias,
                                String topic)

Description copied from interface: ReplicationPolicy

Returns the remote topic name for the given topic and source cluster alias.

Specified by:

formatRemoteTopic in interface ReplicationPolicy

topicSource

public String topicSource(String topic)

Description copied from interface: ReplicationPolicy

Returns the source cluster alias of given topic. Returns null if the given topic is not a remote topic.

Specified by:

topicSource in interface ReplicationPolicy

upstreamTopic

public String upstreamTopic(String topic)

Description copied from interface: ReplicationPolicy

Return the name of the given topic on the source cluster.

Topics may be replicated multiple hops, so the immediately upstream topic may itself be a remote topic.

Returns null if the given topic is not a remote topic.

Specified by:

upstreamTopic in interface ReplicationPolicy

offsetSyncsTopic

public String offsetSyncsTopic(String clusterAlias)

Description copied from interface: ReplicationPolicy

Returns the name of the offset-syncs topic for given cluster alias.

Specified by:

offsetSyncsTopic in interface ReplicationPolicy

checkpointsTopic

public String checkpointsTopic(String clusterAlias)

Description copied from interface: ReplicationPolicy

Returns the name of the checkpoints topic for given cluster alias.

Specified by:

checkpointsTopic in interface ReplicationPolicy

isCheckpointsTopic

public boolean isCheckpointsTopic(String topic)

Description copied from interface: ReplicationPolicy

Returns true if the topic is a checkpoints topic.

Specified by:

isCheckpointsTopic in interface ReplicationPolicy

isMM2InternalTopic

public boolean isMM2InternalTopic(String topic)

Description copied from interface: ReplicationPolicy

Returns true if the topic is one of MirrorMaker internal topics. This is used to make sure the topic doesn't need to be replicated.

Specified by:

isMM2InternalTopic in interface ReplicationPolicy