kafka HerderConnectorContext 源码
kafka HerderConnectorContext 代码
文件路径：/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/HerderConnectorContext.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;
import org.apache.kafka.connect.errors.ConnectException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* ConnectorContext for use with a Herder
*/
public class HerderConnectorContext implements CloseableConnectorContext {
private static final Logger log = LoggerFactory.getLogger(HerderConnectorContext.class);
private final AbstractHerder herder;
private final String connectorName;
private volatile boolean closed;
public HerderConnectorContext(AbstractHerder herder, String connectorName) {
this.herder = herder;
this.connectorName = connectorName;
this.closed = false;
}
@Override
public void requestTaskReconfiguration() {
if (closed) {
throw new ConnectException("The request for task reconfiguration has been rejected "
+ "because this instance of the connector '" + connectorName + "' has already "
+ "been shut down.");
}
// Local herder runs in memory in this process
// Distributed herder will forward the request to the leader if needed
herder.requestTaskReconfiguration(connectorName);
}
@Override
public void raiseError(Exception e) {
if (closed) {
log.warn("Connector {} attempted to raise error after shutdown:", connectorName, e);
throw new ConnectException("The request to fail the connector has been rejected "
+ "because this instance of the connector '" + connectorName + "' has already "
+ "been shut down.");
}
herder.onFailure(connectorName, e);
}
@Override
public void close() {
closed = true;
}
}
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