org.apache.flink.connector.pulsar.sink.writer.router

Class RoundRobinTopicRouter<IN>

java.lang.Object

org.apache.flink.connector.pulsar.sink.writer.router.RoundRobinTopicRouter<IN>

Type Parameters:

IN - The message type which should write to Pulsar.

All Implemented Interfaces:

Serializable, TopicRouter<IN>

@Internal
public class RoundRobinTopicRouter<IN>
extends Object
implements TopicRouter<IN>

If you choose the TopicRoutingMode.ROUND_ROBIN policy, we would use this implementation. We would pick the topic one by one in a fixed batch size.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RoundRobinTopicRouter(SinkConfiguration configuration)

Method Summary

Modifier and Type	Method and Description
String	route(IN in, String key, List<String> partitions, PulsarSinkContext context) Choose the topic by given record & available partition list.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.connector.pulsar.sink.writer.router.TopicRouter

open

Constructor Detail

RoundRobinTopicRouter

public RoundRobinTopicRouter(SinkConfiguration configuration)

Method Detail

route

public String route(IN in,
                    String key,
                    List<String> partitions,
                    PulsarSinkContext context)

Description copied from interface: TopicRouter

Choose the topic by given record & available partition list. You can return a new topic name if you need it.

Specified by:

route in interface TopicRouter<IN>

Parameters:

in - The record instance which need to be written to Pulsar.

key - The key of the message from PulsarMessageBuilder.key(String). It could be null, if message doesn't have a key.

partitions - The available partition list. This could be empty if you don't provide any topics in PulsarSinkBuilder.setTopics(String...). You can return a custom topic, but make sure it should contain a partition index in naming. Using TopicNameUtils.topicNameWithPartition(String, int) can easily create a topic name with partition index.

context - The context contains useful information for determining the topic.

Returns:

The topic name to use.