kafka TargetState 源码
kafka TargetState 代码
文件路径：/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/TargetState.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;
/**
* The target state of a connector is its desired state as indicated by the user
* through interaction with the REST API. When a connector is first created, its
* target state is "STARTED." This does not mean it has actually started, just that
* the Connect framework will attempt to start it after its tasks have been assigned.
* After the connector has been paused, the target state will change to PAUSED,
* and all the tasks will stop doing work.
*
* Target states are persisted in the config topic, which is read by all of the
* workers in the group. When a worker sees a new target state for a connector which
* is running, it will transition any tasks which it owns (i.e. which have been
* assigned to it by the leader) into the desired target state. Upon completion of
* a task rebalance, the worker will start the task in the last known target state.
*/
public enum TargetState {
STARTED,
PAUSED,
}
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