com.github.hdl.tensorflow.yarn.app.api.impl.pb.client.TensorFlowClusterPBClientImpl.java Source code

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/**
 * 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 com.github.hdl.tensorflow.yarn.app.api.impl.pb.client;

import com.github.hdl.tensorflow.yarn.app.api.TensorFlowCluster;
import com.github.hdl.tensorflow.yarn.app.api.TensorFlowClusterPB;
import com.github.hdl.tensorflow.yarn.app.api.protocolrecords.GetClusterSpecRequest;
import com.github.hdl.tensorflow.yarn.app.api.protocolrecords.GetClusterSpecResponse;
import com.github.hdl.tensorflow.yarn.app.api.protocolrecords.impl.pb.GetClusterSpecRequestPBImpl;
import com.github.hdl.tensorflow.yarn.app.api.protocolrecords.impl.pb.GetClusterSpecResponsePBImpl;
import com.google.protobuf.ServiceException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ipc.ProtobufRpcEngine;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.ipc.RPCUtil;
import org.apache.hadoop.yarn.proto.YarnTensorFlowClusterProtos.GetClusterSpecRequestProto;

import java.io.Closeable;
import java.io.IOException;
import java.net.InetSocketAddress;

public class TensorFlowClusterPBClientImpl implements TensorFlowCluster, Closeable {
    private TensorFlowClusterPB proxy;

    public TensorFlowClusterPBClientImpl(long clientVersion, InetSocketAddress addr, Configuration conf)
            throws IOException {
        RPC.setProtocolEngine(conf, TensorFlowClusterPB.class, ProtobufRpcEngine.class);
        proxy = (TensorFlowClusterPB) RPC.getProxy(TensorFlowClusterPB.class, clientVersion, addr, conf);
    }

    @Override
    public void close() {
        if (this.proxy != null) {
            RPC.stopProxy(this.proxy);
        }
    }

    @Override
    public GetClusterSpecResponse getClusterSpec(GetClusterSpecRequest request) throws YarnException, IOException {
        GetClusterSpecRequestProto requestProto = ((GetClusterSpecRequestPBImpl) request).getProto();
        try {
            return new GetClusterSpecResponsePBImpl(proxy.getClusterSpec(null, requestProto));
        } catch (ServiceException e) {
            RPCUtil.unwrapAndThrowException(e);
            return null;
        }
    }
}