com.alibaba.wasp.master.TestWaspRPCException.java Source code

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/**
 * Copyright The Apache Software Foundation
 *
 * 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.alibaba.wasp.master;

import com.alibaba.wasp.FConstants;
import com.alibaba.wasp.ServerName;
import com.alibaba.wasp.WaspTestingUtility;
import com.alibaba.wasp.ipc.WaspRPC;
import com.alibaba.wasp.protobuf.ProtobufUtil;
import com.alibaba.wasp.protobuf.generated.MasterProtos;
import com.google.protobuf.ServiceException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.ipc.RemoteException;
import org.junit.Test;

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

import static org.junit.Assert.fail;

public class TestWaspRPCException {

    @Test
    public void testRPCException() throws Exception {
        WaspTestingUtility TEST_UTIL = new WaspTestingUtility();
        TEST_UTIL.getHBaseTestingUtility().startMiniZKCluster();
        Configuration conf = TEST_UTIL.getConfiguration();
        conf.set(FConstants.MASTER_PORT, "0");
        TEST_UTIL.getConfiguration().set(FConstants.ZOOKEEPER_QUORUM,
                TEST_UTIL.getConfiguration().get(HConstants.ZOOKEEPER_QUORUM));
        TEST_UTIL.getConfiguration().set(FConstants.ZOOKEEPER_CLIENT_PORT,
                TEST_UTIL.getConfiguration().get(HConstants.ZOOKEEPER_CLIENT_PORT));
        FMaster hm = new FMaster(conf);

        ServerName sm = hm.getServerName();
        InetSocketAddress isa = new InetSocketAddress(sm.getHostname(), sm.getPort());
        int i = 0;
        // retry the RPC a few times; we have seen SocketTimeoutExceptions if we
        // try to connect too soon. Retry on SocketTimeoutException.
        while (i < 20) {
            try {
                FMasterMonitorProtocol inf = (FMasterMonitorProtocol) WaspRPC.getProxy(FMasterMonitorProtocol.class,
                        FMasterMonitorProtocol.VERSION, isa, conf, 100 * 10);
                inf.isMasterRunning(null, MasterProtos.IsMasterRunningRequest.getDefaultInstance());
                fail();
            } catch (ServiceException ex) {
                IOException ie = ProtobufUtil.getRemoteException(ex);
                if (ie instanceof RemoteException) {
                    ie = ((RemoteException) ie).unwrapRemoteException();
                }
                if (!(ie instanceof SocketTimeoutException)) {
                    if (ie.getMessage().indexOf("Server is not running yet") != -1) {
                        return;
                    }
                } else {
                    System.err.println("Got SocketTimeoutException. Will retry. ");
                }
            } catch (Throwable t) {
                fail("Unexpected throwable: " + t);
            }
            Thread.sleep(100);
            i++;
        }
        fail();
    }

}