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 com.google.common.util.concurrent.MoreExecutors;
  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 public class HandshakeListenerImpl implements HandshakeListener {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(HandshakeListenerImpl.class);
  34
  35     private final ConnectionContext connectionContext;
  36     private final DeviceConnectedHandler deviceConnectedHandler;
  37     private HandshakeContext handshakeContext;
  38
  39     /**
  40      * Constructor.
  41      *
  42      * @param connectionContext - connection context
  43      * @param deviceConnectedHandler - device connected handler
  44      */
  45     public HandshakeListenerImpl(final ConnectionContext connectionContext,
  46                                  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(), MoreExecutors.directExecutor());
  65     }
  66
  67     private FutureCallback<RpcResult<BarrierOutput>> addBarrierCallback() {
  68         return new FutureCallback<RpcResult<BarrierOutput>>() {
  69             @Override
  70             @SuppressWarnings("checkstyle:IllegalCatch")
  71             public void onSuccess(final RpcResult<BarrierOutput> result) {
  72                 if (LOG.isDebugEnabled()) {
  73                     LOG.debug("succeeded by getting sweep barrier after post-handshake for device {}",
  74                             connectionContext.getDeviceInfo());
  75                 }
  76                 try {
  77                     ConnectionStatus connectionStatusResult = deviceConnectedHandler.deviceConnected(connectionContext);
  78                     if (connectionStatusResult != ConnectionStatus.MAY_CONTINUE) {
  79                         connectionContext.closeConnection(false);
  80                     }
  81                     SessionStatistics.countEvent(connectionContext.getDeviceInfo().toString(),
  82                             SessionStatistics.ConnectionStatus.CONNECTION_CREATED);
  83                 } catch (final Exception e) {
  84                     LOG.warn("initial processing failed for device {}", connectionContext.getDeviceInfo(), e);
  85                     SessionStatistics.countEvent(connectionContext.getDeviceInfo().toString(),
  86                             SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
  87                     connectionContext.closeConnection(true);
  88                 }
  89             }
  90
  91             @Override
  92             public void onFailure(final Throwable throwable) {
  93                 LOG.warn("failed to get sweep barrier after post-handshake for device {}",
  94                         connectionContext.getDeviceInfo(), throwable);
  95                 connectionContext.closeConnection(false);
  96             }
  97         };
  98     }
  99
 100     private ListenableFuture<RpcResult<BarrierOutput>> fireBarrier(final Short version, final long xid) {
 101         final BarrierInput barrierInput = new BarrierInputBuilder()
 102                 .setXid(xid)
 103                 .setVersion(version)
 104                 .build();
 105         return JdkFutureAdapters.listenInPoolThread(
 106                 this.connectionContext.getConnectionAdapter().barrier(barrierInput));
 107     }
 108
 109     @Override
 110     public void onHandshakeFailure() {
 111         if (LOG.isDebugEnabled()) {
 112             LOG.debug("handshake failed: {}", this.connectionContext.getConnectionAdapter().getRemoteAddress());
 113         }
 114         this.handshakeContext.close();
 115         this.connectionContext.closeConnection(false);
 116     }
 117
 118     @Override
 119     public void setHandshakeContext(final HandshakeContext handshakeContext) {
 120         this.handshakeContext = handshakeContext;
 121     }
 122 }