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.ConnectionStatus;
  18 import org.opendaylight.openflowplugin.api.openflow.connection.HandshakeContext;
  19 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceConnectedHandler;
  20 import org.opendaylight.openflowplugin.api.openflow.md.core.HandshakeListener;
  21 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.SessionStatistics;
  22 import org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInput;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInputBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierOutput;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  27 import org.opendaylight.yangtools.yang.common.RpcResult;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 /**
  32  *
  33  */
  34 public class HandshakeListenerImpl implements HandshakeListener {
  35
  36     private static final Logger LOG = LoggerFactory.getLogger(HandshakeListenerImpl.class);
  37
  38     private final ConnectionContext connectionContext;
  39     private final DeviceConnectedHandler deviceConnectedHandler;
  40     private HandshakeContext handshakeContext;
  41
  42     /**
  43      * @param connectionContext
  44      * @param deviceConnectedHandler
  45      */
  46     public HandshakeListenerImpl(final ConnectionContext connectionContext, final DeviceConnectedHandler deviceConnectedHandler) {
  47         this.connectionContext = connectionContext;
  48         this.deviceConnectedHandler = deviceConnectedHandler;
  49     }
  50
  51     @Override
  52     public void onHandshakeSuccessful(final GetFeaturesOutput featureOutput, final Short version) {
  53         if (LOG.isDebugEnabled()) {
  54             LOG.debug("handshake succeeded: {}", connectionContext.getConnectionAdapter().getRemoteAddress());
  55         }
  56         this.handshakeContext.close();
  57         connectionContext.changeStateToWorking();
  58         connectionContext.setFeatures(featureOutput);
  59         connectionContext.setNodeId(InventoryDataServiceUtil.nodeIdFromDatapathId(featureOutput.getDatapathId()));
  60         connectionContext.handshakeSuccessful();
  61
  62         // fire barrier in order to sweep all handshake and posthandshake messages before continue
  63         final ListenableFuture<RpcResult<BarrierOutput>> barrier = fireBarrier(version, 0L);
  64         Futures.addCallback(barrier, addBarrierCallback());
  65     }
  66
  67     private FutureCallback<RpcResult<BarrierOutput>> addBarrierCallback() {
  68         return new FutureCallback<RpcResult<BarrierOutput>>() {
  69             @Override
  70             public void onSuccess(@Nullable final RpcResult<BarrierOutput> result) {
  71                 if (LOG.isDebugEnabled()) {
  72                     LOG.debug("succeeded by getting sweep barrier after post-handshake for device {}", connectionContext.getNodeId().getValue());
  73                 }
  74                 try {
  75                     ConnectionStatus connectionStatusResult = deviceConnectedHandler.deviceConnected(connectionContext);
  76                     if (!ConnectionStatus.MAY_CONTINUE.equals(connectionStatusResult)) {
  77                         connectionContext.closeConnection(true);
  78                     }
  79                     SessionStatistics.countEvent(connectionContext.getNodeId().toString(),
  80                             SessionStatistics.ConnectionStatus.CONNECTION_CREATED);
  81                 } catch (final Exception e) {
  82                     LOG.error("ConnectionContext initial processing failed: ", e);
  83                     SessionStatistics.countEvent(connectionContext.getNodeId().toString(),
  84                             SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
  85                     connectionContext.closeConnection(true);
  86                 }
  87             }
  88
  89             @Override
  90             public void onFailure(final Throwable t) {
  91                 LOG.error("failed to get sweep barrier after post-handshake for device {}", connectionContext.getNodeId());
  92                 connectionContext.closeConnection(false);
  93             }
  94         };
  95     }
  96
  97     private ListenableFuture<RpcResult<BarrierOutput>> fireBarrier(final Short version, final long xid) {
  98         final BarrierInput barrierInput = new BarrierInputBuilder()
  99                 .setXid(xid)
 100                 .setVersion(version)
 101                 .build();
 102         return JdkFutureAdapters.listenInPoolThread(
 103                 this.connectionContext.getConnectionAdapter().barrier(barrierInput));
 104     }
 105
 106     @Override
 107     public void onHandshakeFailure() {
 108         if (LOG.isDebugEnabled()) {
 109             LOG.debug("handshake failed: {}", this.connectionContext.getConnectionAdapter().getRemoteAddress());
 110         }
 111         this.handshakeContext.close();
 112         this.connectionContext.closeConnection(false);
 113     }
 114
 115     @Override
 116     public void setHandshakeContext(final HandshakeContext handshakeContext) {
 117         this.handshakeContext = handshakeContext;
 118     }
 119 }