Package org.apache.giraph.comm.requests

Examples of org.apache.giraph.comm.requests.WritableRequest

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      ChannelHandlerContext ctx, MessageEvent e) {
    if (LOG.isDebugEnabled()) {
      LOG.debug("messageReceived: Got " + e.getMessage().getClass());
    }

    WritableRequest writableRequest = (WritableRequest) e.getMessage();
    // Simulate a closed connection on the first request (if desired)
    // TODO: Move out into a separate, dedicated handler.
    if (closeFirstRequest && !ALREADY_CLOSED_FIRST_REQUEST) {
      LOG.info("messageReceived: Simulating closing channel on first " +
          "request " + writableRequest.getRequestId() + " from " +
          writableRequest.getClientId());
      ALREADY_CLOSED_FIRST_REQUEST = true;
      ctx.getChannel().close();
      return;
    }

    if (writableRequest.getType() == RequestType.SASL_TOKEN_MESSAGE_REQUEST) {
      // initialize server-side SASL functionality, if we haven't yet
      // (in which case we are looking at the first SASL message from the
      // client).
      SaslNettyServer saslNettyServer =
          NettyServer.CHANNEL_SASL_NETTY_SERVERS.get(ctx.getChannel());
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    int enumValue = inputStream.readByte();
    RequestType type = RequestType.values()[enumValue];
    Class<? extends WritableRequest> writableRequestClass =
        type.getRequestClass();

    WritableRequest writableRequest =
        ReflectionUtils.newInstance(writableRequestClass, conf);
    writableRequest.readFields(inputStream);
    if (LOG.isDebugEnabled()) {
      LOG.debug("decode: Client " + writableRequest.getClientId() +
          ", requestId " + writableRequest.getRequestId() +
          ", " +  writableRequest.getType() + ", with size " +
          buffer.array().length + " took " +
          Times.getNanosSince(TIME, startDecodingNanoseconds) + " ns");
    }

    return writableRequest;
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    // Encode the request
    if (LOG.isDebugEnabled()) {
      startEncodingNanoseconds = TIME.getNanoseconds();
    }
    WritableRequest writableRequest = (WritableRequest) msg;
    int requestSize = writableRequest.getSerializedSize();
    ChannelBuffer channelBuffer;
    if (requestSize == WritableRequest.UNKNOWN_SIZE) {
      channelBuffer = ChannelBuffers.dynamicBuffer(
          bufferStartingSize,
          ctx.getChannel().getConfig().getBufferFactory());
    } else {
      requestSize += LENGTH_PLACEHOLDER.length + 1;
      channelBuffer = useDirectBuffers ?
          ChannelBuffers.directBuffer(requestSize) :
          ChannelBuffers.buffer(requestSize);
    }
    ChannelBufferOutputStream outputStream =
        new ChannelBufferOutputStream(channelBuffer);
    outputStream.write(LENGTH_PLACEHOLDER);
    outputStream.writeByte(writableRequest.getType().ordinal());
    try {
      writableRequest.write(outputStream);
    } catch (IndexOutOfBoundsException e) {
      LOG.error("encode: Most likely the size of request was not properly " +
          "specified - see getSerializedSize() in " +
          writableRequest.getType().getRequestClass());
      throw new IllegalStateException(e);
    }
    outputStream.flush();
    outputStream.close();

    // Set the correct size at the end
    ChannelBuffer encodedBuffer = outputStream.buffer();
    encodedBuffer.setInt(0, encodedBuffer.writerIndex() - 4);
    if (LOG.isDebugEnabled()) {
      LOG.debug("encode: Client " + writableRequest.getClientId() + ", " +
          "requestId " + writableRequest.getRequestId() +
          ", size = " + encodedBuffer.writerIndex() + ", " +
          writableRequest.getType() + " took " +
          Times.getNanosSince(TIME, startEncodingNanoseconds) + " ns");
    }
    return encodedBuffer;
  }
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      throw new IllegalArgumentException(
          "encode: cannot encode message of type " + msg.getClass() +
              " since it is not an instance of an implementation of " +
              " WritableRequest.");
    }
    @SuppressWarnings("unchecked")
    WritableRequest writableRequest =
      (WritableRequest) msg;
    ChannelBufferOutputStream outputStream =
      new ChannelBufferOutputStream(ChannelBuffers.dynamicBuffer(
        10, ctx.getChannel().getConfig().getBufferFactory()));

    if (LOG.isDebugEnabled()) {
      LOG.debug("encode: Encoding a message of type " + msg.getClass());
    }
    outputStream.write(LENGTH_PLACEHOLDER);

    // write type of object.
    outputStream.writeByte(writableRequest.getType().ordinal());

    // write the object itself.
    writableRequest.write(outputStream);

    outputStream.flush();

    // Set the correct size at the end.
    ChannelBuffer encodedBuffer = outputStream.buffer();
    encodedBuffer.setInt(0, encodedBuffer.writerIndex() - 4);

    if (LOG.isDebugEnabled()) {
      LOG.debug("encode: Encoding a message of type " + msg.getClass());
    }
/*if[HADOOP_NON_SECURE]
else[HADOOP_NON_SECURE]*/
    if (writableRequest.getType() == RequestType.SASL_COMPLETE_REQUEST) {
      // We are sending to the client a SASL_COMPLETE response (created by
      // the SaslServer handler). The SaslServer handler has removed itself
      // from the pipeline after creating this response, and now it's time for
      // the ResponseEncoder to remove itself also.
      if (LOG.isDebugEnabled()) {
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        channel.getRemoteAddress());
    }
    // 3. Create object of the type determined in step 2.
    Class<? extends WritableRequest> writableRequestClass =
      type.getRequestClass();
    WritableRequest serverResponse =
      ReflectionUtils.newInstance(writableRequestClass, conf);
    // 4. Deserialize the inputStream's contents into the newly-constructed
    // serverResponse object.
    try {
      serverResponse.readFields(inputStream);
    } catch (IOException e) {
      LOG.error("decode: Exception when trying to read server response: " + e);
    }
    // serverResponse can now be used in the next stage in pipeline.
    return serverResponse;
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      ChannelHandlerContext ctx, MessageEvent e) {
    if (LOG.isTraceEnabled()) {
      LOG.trace("messageReceived: Got " + e.getMessage().getClass());
    }

    WritableRequest writableRequest = (WritableRequest) e.getMessage();

    // Simulate a closed connection on the first request (if desired)
    if (closeFirstRequest && !ALREADY_CLOSED_FIRST_REQUEST) {
      LOG.info("messageReceived: Simulating closing channel on first " +
          "request " + writableRequest.getRequestId() + " from " +
          writableRequest.getClientId());
      ALREADY_CLOSED_FIRST_REQUEST = true;
      ctx.getChannel().close();
      return;
    }

    // Only execute this request exactly once
    int alreadyDone = 1;
    if (workerRequestReservedMap.reserveRequest(
        writableRequest.getClientId(),
        writableRequest.getRequestId())) {
      if (LOG.isDebugEnabled()) {
        startProcessingNanoseconds = TIME.getNanoseconds();
      }
      processRequest((R) writableRequest);
      if (LOG.isDebugEnabled()) {
        LOG.debug("messageReceived: Processing client " +
            writableRequest.getClientId() + ", " +
            "requestId " + writableRequest.getRequestId() +
            ", " +  writableRequest.getType() + " took " +
            Times.getNanosSince(TIME, startProcessingNanoseconds) + " ns");
      }
      alreadyDone = 0;
    } else {
      LOG.info("messageReceived: Request id " +
          writableRequest.getRequestId() + " from client " +
          writableRequest.getClientId() +
          " was already processed, " +
          "not processing again.");
    }

    // Send the response with the request id
    ChannelBuffer buffer = ChannelBuffers.directBuffer(RESPONSE_BYTES);
    buffer.writeInt(myTaskInfo.getTaskId());
    buffer.writeLong(writableRequest.getRequestId());
    buffer.writeByte(alreadyDone);
    e.getChannel().write(buffer);
  }
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    // the remote worker 'workerInfo' is full enough to be flushed
    if (workerMessageSize >= maxMessagesSizePerWorker) {
      PairList<Integer, ByteArrayVertexIdMessages<I, M>>
          workerMessages =
          sendMessageCache.removeWorkerMessages(workerInfo);
      WritableRequest writableRequest =
          new SendWorkerMessagesRequest<I, M>(workerMessages);
      doRequest(workerInfo, writableRequest);
      return true;
    }
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    if (LOG.isTraceEnabled()) {
      LOG.trace("sendVertexRequest: Sending to " + workerInfo +
          ", with partition " + partition);
    }

    WritableRequest vertexRequest =
        new SendVertexRequest<I, V, E, M>(partition);
    doRequest(workerInfo, vertexRequest);

    // Messages are stored separately
    if (serviceWorker.getSuperstep() != BspService.INPUT_SUPERSTEP) {
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      } catch (IOException e) {
        throw new IllegalStateException(
            "sendVertexRequest: Got IOException ", e);
      }
      if (vertexIdMessages.getSize() > maxMessagesSizePerWorker) {
        WritableRequest messagesRequest = new
            SendPartitionCurrentMessagesRequest<I, V, E, M>(
            partitionId, vertexIdMessages);
        doRequest(workerInfo, messagesRequest);
        vertexIdMessages =
            new ByteArrayVertexIdMessages<I, M>();
        vertexIdMessages.setConf(configuration);
        vertexIdMessages.initialize();
      }
    }
    if (!vertexIdMessages.isEmpty()) {
      WritableRequest messagesRequest = new
          SendPartitionCurrentMessagesRequest<I, V, E, M>(
          partitionId, vertexIdMessages);
      doRequest(workerInfo, messagesRequest);
    }
  }
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    // Send a request if the cache of outgoing edges to the remote worker is
    // full
    if (workerEdgesSize >= maxEdgesSizePerWorker) {
      PairList<Integer, ByteArrayVertexIdEdges<I, E>> workerEdges =
          sendEdgeCache.removeWorkerEdges(workerInfo);
      WritableRequest writableRequest =
          new SendWorkerEdgesRequest<I, E>(workerEdges);
      doRequest(workerInfo, writableRequest);
      return true;
    }
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Related Classes of org.apache.giraph.comm.requests.WritableRequest

  • org.apache.giraph.comm.netty.handler.RequestDecoder
  • org.apache.giraph.comm.netty.handler.RequestEncoder
  • org.apache.giraph.comm.netty.handler.RequestServerHandler
  • org.apache.giraph.comm.netty.handler.ResponseEncoder
  • org.apache.giraph.comm.netty.handler.SaslClientHandler
  • org.apache.giraph.comm.netty.handler.SaslServerHandler
  • org.apache.giraph.comm.netty.NettyWorkerClientRequestProcessor
  • org.apache.giraph.comm.RequestFailureTest
  • org.apache.giraph.comm.SendMessageCache
  • org.apache.giraph.comm.SendOneMessageToManyCache
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