openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/connection/listener/HandshakeListenerImpl.java

   1 /**
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.openflowplugin.impl.connection.listener;
  10
  11 import com.google.common.util.concurrent.FutureCallback;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.JdkFutureAdapters;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import javax.annotation.Nullable;
  16 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  17 import org.opendaylight.openflowplugin.api.openflow.connection.HandshakeContext;
  18 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceConnectedHandler;
  19 import org.opendaylight.openflowplugin.api.openflow.md.core.HandshakeListener;
  20 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.SessionStatistics;
  21 import org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInput;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInputBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierOutput;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  26 import org.opendaylight.yangtools.yang.common.RpcResult;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  *
  32  */
  33 public class HandshakeListenerImpl implements HandshakeListener {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(HandshakeListenerImpl.class);
  36
  37     private ConnectionContext connectionContext;
  38     private DeviceConnectedHandler deviceConnectedHandler;
  39     private HandshakeContext handshakeContext;
  40
  41     /**
  42      * @param connectionContext
  43      * @param deviceConnectedHandler
  44      */
  45     public HandshakeListenerImpl(ConnectionContext connectionContext, DeviceConnectedHandler deviceConnectedHandler) {
  46         this.connectionContext = connectionContext;
  47         this.deviceConnectedHandler = deviceConnectedHandler;
  48     }
  49
  50     @Override
  51     public void onHandshakeSuccessfull(GetFeaturesOutput featureOutput, Short version) {
  52         LOG.debug("handshake succeeded: {}", connectionContext.getConnectionAdapter().getRemoteAddress());
  53         closeHandshakeContext();
  54         connectionContext.changeStateToWorking();
  55         connectionContext.setFeatures(featureOutput);
  56         connectionContext.setNodeId(InventoryDataServiceUtil.nodeIdFromDatapathId(featureOutput.getDatapathId()));
  57
  58         // fire barrier in order to sweep all handshake and posthandshake messages before continue
  59         final ListenableFuture<RpcResult<BarrierOutput>> barrier = fireBarrier(version, 0L);
  60         Futures.addCallback(barrier, new FutureCallback<RpcResult<BarrierOutput>>() {
  61             @Override
  62             public void onSuccess(@Nullable final RpcResult<BarrierOutput> result) {
  63                 LOG.debug("succeeded by getting sweep barrier after posthandshake for device {}", connectionContext.getNodeId());
  64                 deviceConnectedHandler.deviceConnected(connectionContext);
  65                 SessionStatistics.countEvent(connectionContext.getNodeId().toString(),
  66                         SessionStatistics.ConnectionStatus.CONNECTION_CREATED);
  67             }
  68
  69             @Override
  70             public void onFailure(final Throwable t) {
  71                 LOG.info("failed to get sweep barrier after posthandshake for device {}", connectionContext.getNodeId());
  72                 connectionContext.closeConnection(false);
  73             }
  74         });
  75     }
  76
  77     protected ListenableFuture<RpcResult<BarrierOutput>> fireBarrier(final Short version, final long xid) {
  78         final BarrierInput barrierInput = new BarrierInputBuilder()
  79                 .setXid(xid)
  80                 .setVersion(version)
  81                 .build();
  82         return JdkFutureAdapters.listenInPoolThread(
  83                 connectionContext.getConnectionAdapter().barrier(barrierInput));
  84     }
  85
  86     @Override
  87     public void onHandshakeFailure() {
  88         LOG.debug("handshake failed: {}", connectionContext.getConnectionAdapter().getRemoteAddress());
  89         closeHandshakeContext();
  90         connectionContext.closeConnection(false);
  91     }
  92
  93     private void closeHandshakeContext() {
  94         try {
  95             handshakeContext.close();
  96         } catch (Exception e) {
  97             LOG.warn("Closing handshake context failed: {}", e.getMessage());
  98             LOG.debug("Detail in hanshake context close:", e);
  99         }
 100     }
 101
 102     @Override
 103     public void setHandshakeContext(HandshakeContext handshakeContext) {
 104         this.handshakeContext = handshakeContext;
 105     }
 106 }