/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.streaming.connectors.kafka.partitioner;
import java.io.Serializable;
/**
* It contains a open() method which is called on each parallel instance.
* Partitioners must be serializable!
*
* @deprecated This partitioner does not handle partitioning properly in the case of
* multiple topics, and has been deprecated. Please use {@link FlinkKafkaPartitioner} instead.
*/
@Deprecated
public abstract class KafkaPartitioner<T> implements Serializable {
private static final long serialVersionUID = -1974260817778593473L;
/**
* Initializer for the Partitioner.
* @param parallelInstanceId 0-indexed id of the parallel instance in Flink
* @param parallelInstances the total number of parallel instances
* @param partitions an array describing the partition IDs of the available Kafka partitions.
*/
public void open(int parallelInstanceId, int parallelInstances, int[] partitions) {
// overwrite this method if needed.
}
public abstract int partition(T next, byte[] serializedKey, byte[] serializedValue, int numPartitions);
}