コード例 #1
0
  private void handleRequest(
      StreamInput stream,
      long requestId,
      int messageLengthBytes,
      LocalTransport sourceTransport,
      Version version)
      throws Exception {
    stream = new NamedWriteableAwareStreamInput(stream, namedWriteableRegistry);
    final String action = stream.readString();
    transportServiceAdapter.onRequestReceived(requestId, action);
    inFlightRequestsBreaker()
        .addEstimateBytesAndMaybeBreak(messageLengthBytes, "<transport_request>");
    final LocalTransportChannel transportChannel =
        new LocalTransportChannel(
            this,
            transportServiceAdapter,
            sourceTransport,
            action,
            requestId,
            version,
            messageLengthBytes);
    try {
      final RequestHandlerRegistry reg = transportServiceAdapter.getRequestHandler(action);
      if (reg == null) {
        throw new ActionNotFoundTransportException("Action [" + action + "] not found");
      }
      final TransportRequest request = reg.newRequest();
      request.remoteAddress(sourceTransport.boundAddress.publishAddress());
      request.readFrom(stream);
      if (ThreadPool.Names.SAME.equals(reg.getExecutor())) {
        //noinspection unchecked
        reg.processMessageReceived(request, transportChannel);
      } else {
        threadPool
            .executor(reg.getExecutor())
            .execute(
                new AbstractRunnable() {
                  @Override
                  protected void doRun() throws Exception {
                    //noinspection unchecked
                    reg.processMessageReceived(request, transportChannel);
                  }

                  @Override
                  public boolean isForceExecution() {
                    return reg.isForceExecution();
                  }

                  @Override
                  public void onFailure(Throwable e) {
                    if (lifecycleState() == Lifecycle.State.STARTED) {
                      // we can only send a response transport is started....
                      try {
                        transportChannel.sendResponse(e);
                      } catch (Throwable e1) {
                        logger.warn(
                            "Failed to send error message back to client for action [{}]",
                            e1,
                            action);
                        logger.warn("Actual Exception", e);
                      }
                    }
                  }
                });
      }
    } catch (Throwable e) {
      try {
        transportChannel.sendResponse(e);
      } catch (Throwable e1) {
        logger.warn("Failed to send error message back to client for action [{}]", e, action);
        logger.warn("Actual Exception", e1);
      }
    }
  }