Examples of org.apache.hadoop.hbase.ipc.RpcClient$Connection$CallSender

org.jboss.remoting3.Connection
If the client wants to interrupt its calls easily (i.e. call Thread#interrupt), it gets into a java issue: an interruption during a write closes the socket/channel. A way to avoid this is to use a different thread for writing. This way, on interruptions, we either cancel the writes or ignore the answer if the write is already done, but we don't stop the write in the middle. This adds a thread per region server in the client, so it's kept as an option.
The implementation is simple: the client threads adds their call to the queue, and then wait for an answer. The CallSender blocks on the queue, and writes the calls one after the other. On interruption, the client cancels its call. The CallSender checks that the call has not been canceled before writing it.
When the connection closes, all the calls not yet sent are dismissed. The client thread is notified with an appropriate exception, as if the call was already sent but the answer not yet received.

     * For tests only.
     * @param rpcClient Client we should use instead.
     * @return Previous rpcClient
     */
    RpcClient setRpcClient(final RpcClient rpcClient) {
      RpcClient oldRpcClient = this.rpcClient;
      this.rpcClient = rpcClient;
      return oldRpcClient;
    }

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      // Create the chore that cleans up nonces.
      nonceManagerChore = this.nonceManager.createCleanupChore(this);
    }


    // Setup RPC client for master communication
    rpcClient = new RpcClient(conf, clusterId, new InetSocketAddress(
        this.isa.getAddress(), 0));
    this.pauseMonitor = new JvmPauseMonitor(conf);
    pauseMonitor.start();
  }

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    rpcServer = new RpcServer(null, "testSecuredDelayedRpc",
        Lists.newArrayList(new RpcServer.BlockingServiceAndInterface(service, null)),
          isa, conf, new FifoRpcScheduler(conf, 1));
    rpcServer.start();
    RpcClient rpcClient = new RpcClient(conf, HConstants.DEFAULT_CLUSTER_ID.toString());
    try {
      BlockingRpcChannel channel = rpcClient.createBlockingRpcChannel(
          ServerName.valueOf(rpcServer.getListenerAddress().getHostName(),
              rpcServer.getListenerAddress().getPort(), System.currentTimeMillis()),
          User.getCurrent(), 1000);
      TestDelayedRpcProtos.TestDelayedService.BlockingInterface stub =
        TestDelayedRpcProtos.TestDelayedService.newBlockingStub(channel);
      List<Integer> results = new ArrayList<Integer>();
      TestThread th1 = new TestThread(stub, true, results);
      th1.start();
      Thread.sleep(100);
      th1.join();


      assertEquals(0xDEADBEEF, results.get(0).intValue());
    } finally {
      rpcClient.stop();
    }
  }

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    Configuration conf = TEST_UTIL.getConfiguration();
    conf.set(HConstants.MASTER_PORT, "0");
    CoordinatedStateManager cp = CoordinatedStateManagerFactory.getCoordinatedStateManager(conf);
    HMaster hm = new HMaster(conf, cp);
    ServerName sm = hm.getServerName();
    RpcClient rpcClient = new RpcClient(conf, HConstants.CLUSTER_ID_DEFAULT);
    try {
      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 {
          BlockingRpcChannel channel =
            rpcClient.createBlockingRpcChannel(sm, User.getCurrent(), 0);
          MasterProtos.MasterService.BlockingInterface stub =
            MasterProtos.MasterService.newBlockingStub(channel);
          stub.isMasterRunning(null, IsMasterRunningRequest.getDefaultInstance());
          fail();
        } catch (ServiceException ex) {
          IOException ie = ProtobufUtil.getRemoteException(ex);
          if (!(ie instanceof SocketTimeoutException)) {
            if (ie.getMessage().startsWith("org.apache.hadoop.hbase.ipc." +
                "ServerNotRunningYetException: Server is not running yet")) {
              // Done.  Got the exception we wanted.
              System.out.println("Expected exception: " + ie.getMessage());
              return;
            } else {
              throw ex;
            }
          } else {
            System.err.println("Got SocketTimeoutException. Will retry. ");
          }
        } catch (Throwable t) {
          fail("Unexpected throwable: " + t);
        }
        Thread.sleep(100);
        i++;
      }
      fail();
    } finally {
      rpcClient.stop();
    }
  }

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    // Setup the Quota Manager
    rsQuotaManager = new RegionServerQuotaManager(this);


    // Setup RPC client for master communication
    rpcClient = new RpcClient(conf, clusterId, new InetSocketAddress(
      rpcServices.isa.getAddress(), 0));


    int storefileRefreshPeriod = conf.getInt(StorefileRefresherChore.REGIONSERVER_STOREFILE_REFRESH_PERIOD
      , StorefileRefresherChore.DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD);
    if (storefileRefreshPeriod > 0) {

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    private void connectionClosed() {
        if(! reconnect.get()) {
            return; // Nothing to do
        }
        // Wait until the connection is closed before reconnecting
        final Connection connection = this.connection;
        if(connection != null) {
            if(channel == null) {
                connection.closeAsync();
            }
        } else {
            HostControllerLogger.ROOT_LOGGER.lostRemoteDomainConnection();
            executorService.execute(new Runnable() {
                @Override

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     *
     * @param connectionURI the new connection URI
     */
    protected void reconfigure(final URI connectionURI) {
        configuration.setUri(connectionURI);
        final Connection connection = this.connection;
        if(connection != null) {
            connection.closeAsync();
        }
    }

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            builder.set(Options.SASL_MECHANISMS, Sequence.of("JBOSS-LOCAL-USER"));
        }


        final IoFuture<Connection> futureConnection = endpoint.connect(connectionURI, builder.getMap(), new AuthenticationCallbackHandler(username, password));
        // wait for the connection to be established
        final Connection connection = IoFutureHelper.get(futureConnection, 5000, TimeUnit.MILLISECONDS);
        // create a remoting EJB receiver for this connection
        final EJBReceiver receiver = new RemotingConnectionEJBReceiver(connection);
        // associate it with the client context
        EJBClientContext context = EJBClientContext.create();
        context.registerEJBReceiver(receiver);

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        return this.nodeName;
    }


    @Override
    public EJBReceiver getEJBReceiver() {
        Connection connection;
        final ReconnectHandler reconnectHandler;
        OptionMap channelCreationOptions = OptionMap.EMPTY;
        final EJBClientConfiguration ejbClientConfiguration = this.clusterContext.getEJBClientContext().getEJBClientConfiguration();
        try {
            // if the client configuration is available create the connection using those configs

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            this.connectionTimeout = connectionTimeoutInMillis;
        }


        @Override
        public void reconnect() throws IOException {
            Connection connection = null;
            try {
                final IoFuture<Connection> futureConnection = NetworkUtil.connect(endpoint, destinationHost, destinationPort, null, connectionCreationOptions, callbackHandler, null);
                connection = IoFutureHelper.get(futureConnection, connectionTimeout, TimeUnit.MILLISECONDS);
                logger.debug("Successfully reconnected to connection " + connection);

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