content: /**
   * 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();
    }
  
  }
  