kafka ConnectAssignor 源码
kafka ConnectAssignor 代码
文件路径：/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/ConnectAssignor.java
/*
* 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.kafka.connect.runtime.distributed;
import org.apache.kafka.common.message.JoinGroupResponseData;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Map;
/**
* An assignor that computes a distribution of connectors and tasks among the workers of the group
* that performs rebalancing.
*/
public interface ConnectAssignor {
/**
* Based on the member metadata and the information stored in the worker coordinator this
* method computes an assignment of connectors and tasks among the members of the worker group.
*
* @param leaderId the leader of the group
* @param protocol the protocol type; for Connect assignors this is "eager", "compatible", or "sessioned"
* @param allMemberMetadata the metadata of all the active workers of the group
* @param coordinator the worker coordinator that runs this assignor
* @return the assignment of connectors and tasks to workers
*/
Map<String, ByteBuffer> performAssignment(String leaderId, String protocol,
List<JoinGroupResponseData.JoinGroupResponseMember> allMemberMetadata,
WorkerCoordinator coordinator);
}
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