| /* |
| * 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 org.apache.hyracks.comm.channels; |
| |
| import java.net.SocketAddress; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayDeque; |
| import java.util.Queue; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import org.apache.hyracks.api.channels.IInputChannel; |
| import org.apache.hyracks.api.channels.IInputChannelMonitor; |
| import org.apache.hyracks.api.comm.IBufferAcceptor; |
| import org.apache.hyracks.api.comm.IChannelControlBlock; |
| import org.apache.hyracks.api.comm.ICloseableBufferAcceptor; |
| import org.apache.hyracks.api.context.IHyracksCommonContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.api.partitions.PartitionId; |
| |
| public class NetworkInputChannel implements IInputChannel { |
| private static final Logger LOGGER = Logger.getLogger(NetworkInputChannel.class.getName()); |
| |
| static final int INITIAL_MESSAGE_SIZE = 20; |
| |
| private final IChannelConnectionFactory netManager; |
| |
| private final SocketAddress remoteAddress; |
| |
| private final PartitionId partitionId; |
| |
| private final Queue<ByteBuffer> fullQueue; |
| |
| private final int nBuffers; |
| |
| private IChannelControlBlock ccb; |
| |
| private IInputChannelMonitor monitor; |
| |
| private Object attachment; |
| |
| public NetworkInputChannel(IChannelConnectionFactory netManager, SocketAddress remoteAddress, |
| PartitionId partitionId, int nBuffers) { |
| this.netManager = netManager; |
| this.remoteAddress = remoteAddress; |
| this.partitionId = partitionId; |
| fullQueue = new ArrayDeque<ByteBuffer>(nBuffers); |
| this.nBuffers = nBuffers; |
| } |
| |
| @Override |
| public void registerMonitor(IInputChannelMonitor monitor) { |
| this.monitor = monitor; |
| } |
| |
| @Override |
| public void setAttachment(Object attachment) { |
| this.attachment = attachment; |
| } |
| |
| @Override |
| public Object getAttachment() { |
| return attachment; |
| } |
| |
| @Override |
| public synchronized ByteBuffer getNextBuffer() { |
| return fullQueue.poll(); |
| } |
| |
| @Override |
| public void recycleBuffer(ByteBuffer buffer) { |
| buffer.clear(); |
| ccb.getReadInterface().getEmptyBufferAcceptor().accept(buffer); |
| } |
| |
| @Override |
| public void open(IHyracksCommonContext ctx) throws HyracksDataException { |
| try { |
| ccb = netManager.connect(remoteAddress); |
| } catch (Exception e) { |
| throw new HyracksDataException(e); |
| } |
| ccb.getReadInterface().setFullBufferAcceptor(new ReadFullBufferAcceptor()); |
| ccb.getWriteInterface().setEmptyBufferAcceptor(new WriteEmptyBufferAcceptor()); |
| ccb.getReadInterface().setBufferFactory(new ReadBufferFactory(nBuffers, ctx), nBuffers, |
| ctx.getInitialFrameSize()); |
| ByteBuffer writeBuffer = ByteBuffer.allocate(INITIAL_MESSAGE_SIZE); |
| writeBuffer.putLong(partitionId.getJobId().getId()); |
| writeBuffer.putInt(partitionId.getConnectorDescriptorId().getId()); |
| writeBuffer.putInt(partitionId.getSenderIndex()); |
| writeBuffer.putInt(partitionId.getReceiverIndex()); |
| writeBuffer.flip(); |
| if (LOGGER.isLoggable(Level.FINE)) { |
| LOGGER.fine("Sending partition request: " + partitionId + " on channel: " + ccb); |
| } |
| ccb.getWriteInterface().getFullBufferAcceptor().accept(writeBuffer); |
| ccb.getWriteInterface().getFullBufferAcceptor().close(); |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| |
| } |
| |
| private class ReadFullBufferAcceptor implements ICloseableBufferAcceptor { |
| @Override |
| public void accept(ByteBuffer buffer) { |
| fullQueue.add(buffer); |
| monitor.notifyDataAvailability(NetworkInputChannel.this, 1); |
| } |
| |
| @Override |
| public void close() { |
| monitor.notifyEndOfStream(NetworkInputChannel.this); |
| } |
| |
| @Override |
| public void error(int ecode) { |
| monitor.notifyFailure(NetworkInputChannel.this); |
| } |
| } |
| |
| private class WriteEmptyBufferAcceptor implements IBufferAcceptor { |
| @Override |
| public void accept(ByteBuffer buffer) { |
| // do nothing |
| } |
| } |
| } |