| /** |
| * 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.hama.bsp.message; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.nio.ByteBuffer; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.avro.AvroRemoteException; |
| import org.apache.avro.ipc.NettyServer; |
| import org.apache.avro.ipc.NettyTransceiver; |
| import org.apache.avro.ipc.specific.SpecificRequestor; |
| import org.apache.avro.ipc.specific.SpecificResponder; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hama.bsp.BSPMessageBundle; |
| import org.apache.hama.bsp.BSPPeer; |
| import org.apache.hama.bsp.BSPPeerImpl; |
| import org.apache.hama.bsp.TaskAttemptID; |
| import org.apache.hama.bsp.message.compress.BSPCompressedBundle; |
| import org.apache.hama.util.LRUCache; |
| |
| public final class AvroMessageManagerImpl<M extends Writable> extends |
| CompressableMessageManager<M> implements Sender<M> { |
| |
| private NettyServer server = null; |
| |
| // also cache the senders, getting a new sender from a transceiver generates |
| // exceptions |
| private final HashMap<InetSocketAddress, Sender<M>> peers = new HashMap<InetSocketAddress, Sender<M>>(); |
| private LRUCache<InetSocketAddress, NettyTransceiver> peersLRUCache; |
| |
| @SuppressWarnings("serial") |
| @Override |
| public void init(TaskAttemptID attemptId, BSPPeer<?, ?, ?, ?, M> peer, |
| Configuration conf, InetSocketAddress addr) { |
| super.init(attemptId, peer, conf, addr); |
| super.initCompression(conf); |
| server = new NettyServer(new SpecificResponder(Sender.class, this), addr); |
| peersLRUCache = new LRUCache<InetSocketAddress, NettyTransceiver>( |
| maxCachedConnections) { |
| @Override |
| protected final boolean removeEldestEntry( |
| Map.Entry<InetSocketAddress, NettyTransceiver> eldest) { |
| if (size() > this.capacity) { |
| NettyTransceiver client = eldest.getValue(); |
| client.close(); |
| peers.remove(eldest.getKey()); |
| return true; |
| } |
| return false; |
| } |
| }; |
| } |
| |
| @Override |
| public void close() { |
| super.close(); |
| server.close(); |
| } |
| |
| public void put(BSPMessageBundle<M> messages) throws IOException { |
| this.loopBackMessages(messages); |
| } |
| |
| @Override |
| public void transfer(InetSocketAddress addr, BSPMessageBundle<M> bundle) |
| throws IOException { |
| AvroBSPMessageBundle<M> msg = new AvroBSPMessageBundle<M>(); |
| msg.setData(serializeMessage(bundle)); |
| Sender<M> sender = getSender(addr); |
| sender.transfer(msg); |
| } |
| |
| /** |
| * @param addr, socket address to which BSP Peer Connection will be |
| * established |
| * @return BSP Peer Connection, tried to return cached connection, else |
| * returns a new connection and caches it |
| * @throws IOException |
| */ |
| @SuppressWarnings("unchecked") |
| private final Sender<M> getSender(InetSocketAddress addr) throws IOException { |
| NettyTransceiver client = peersLRUCache.get(addr); |
| if (client == null) { |
| client = new NettyTransceiver(addr); |
| Sender<M> sender = SpecificRequestor.getClient(Sender.class, client); |
| peersLRUCache.put(addr, client); |
| peers.put(addr, sender); |
| } |
| return peers.get(addr); |
| } |
| |
| @Override |
| public Void transfer(AvroBSPMessageBundle<M> messagebundle) |
| throws AvroRemoteException { |
| try { |
| BSPMessageBundle<M> deserializeMessage = deserializeMessage(messagebundle |
| .getData()); |
| this.put(deserializeMessage); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| return null; |
| } |
| |
| private final BSPMessageBundle<M> deserializeMessage(ByteBuffer buffer) |
| throws IOException { |
| BSPMessageBundle<M> msg = new BSPMessageBundle<M>(); |
| byte[] byteArray = buffer.array(); |
| if (compressor == null) { |
| peer.incrementCounter(BSPPeerImpl.PeerCounter.MESSAGE_BYTES_RECEIVED, |
| byteArray.length); |
| ByteArrayInputStream inArray = new ByteArrayInputStream(byteArray); |
| DataInputStream in = new DataInputStream(inArray); |
| msg.readFields(in); |
| } else { |
| peer.incrementCounter(BSPPeerImpl.PeerCounter.COMPRESSED_BYTES_RECEIVED, |
| byteArray.length); |
| msg = compressor.decompressBundle(new BSPCompressedBundle(byteArray)); |
| } |
| |
| return msg; |
| } |
| |
| private final ByteBuffer serializeMessage(BSPMessageBundle<M> msg) |
| throws IOException { |
| if (compressor == null) { |
| ByteArrayOutputStream outArray = new ByteArrayOutputStream(); |
| DataOutputStream out = new DataOutputStream(outArray); |
| msg.write(out); |
| out.close(); |
| byte[] byteArray = outArray.toByteArray(); |
| peer.incrementCounter(BSPPeerImpl.PeerCounter.MESSAGE_BYTES_TRANSFERED, |
| byteArray.length); |
| return ByteBuffer.wrap(byteArray); |
| } else { |
| BSPCompressedBundle compMsgBundle = compressor.compressBundle(msg); |
| byte[] data = compMsgBundle.getData(); |
| peer.incrementCounter(BSPPeerImpl.PeerCounter.COMPRESSED_BYTES_SENT, |
| data.length); |
| return ByteBuffer.wrap(data); |
| } |
| } |
| } |