spark NoOpRpcHandler 源码
spark NoOpRpcHandler 代码
文件路径：/common/network-common/src/main/java/org/apache/spark/network/server/NoOpRpcHandler.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.spark.network.server;
import java.nio.ByteBuffer;
import org.apache.spark.network.client.RpcResponseCallback;
import org.apache.spark.network.client.TransportClient;
/** An RpcHandler suitable for a client-only TransportContext, which cannot receive RPCs. */
public class NoOpRpcHandler extends RpcHandler {
private final StreamManager streamManager;
public NoOpRpcHandler() {
streamManager = new OneForOneStreamManager();
}
@Override
public void receive(TransportClient client, ByteBuffer message, RpcResponseCallback callback) {
throw new UnsupportedOperationException("Cannot handle messages");
}
@Override
public StreamManager getStreamManager() { return streamManager; }
}
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