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     private static final Logger OF_EVENT_LOG = LoggerFactory.getLogger("OfEventLog");
  35
  36     private final ConnectionContext connectionContext;
  37     private final DeviceConnectedHandler deviceConnectedHandler;
  38     private HandshakeContext handshakeContext;
  39
  40     /**
  41      * Constructor.
  42      *
  43      * @param connectionContext - connection context
  44      * @param deviceConnectedHandler - device connected handler
  45      */
  46     public HandshakeListenerImpl(final ConnectionContext connectionContext,
  47                                  final DeviceConnectedHandler deviceConnectedHandler) {
  48         this.connectionContext = connectionContext;
  49         this.deviceConnectedHandler = deviceConnectedHandler;
  50     }
  51
  52     @Override
  53     public void onHandshakeSuccessful(final GetFeaturesOutput featureOutput, final Short version) {
  54         if (LOG.isDebugEnabled()) {
  55             LOG.debug("handshake succeeded: {}", connectionContext.getConnectionAdapter().getRemoteAddress());
  56         }
  57         OF_EVENT_LOG.debug("Connect, Node: {}", featureOutput.getDatapathId());
  58         this.handshakeContext.close();
  59         connectionContext.changeStateToWorking();
  60         connectionContext.setFeatures(featureOutput);
  61         connectionContext.setNodeId(InventoryDataServiceUtil.nodeIdFromDatapathId(featureOutput.getDatapathId()));
  62         connectionContext.handshakeSuccessful();
  63
  64         // fire barrier in order to sweep all handshake and posthandshake messages before continue
  65         final ListenableFuture<RpcResult<BarrierOutput>> barrier = fireBarrier(version, 0L);
  66         Futures.addCallback(barrier, addBarrierCallback(), MoreExecutors.directExecutor());
  67     }
  68
  69     private FutureCallback<RpcResult<BarrierOutput>> addBarrierCallback() {
  70         return new FutureCallback<RpcResult<BarrierOutput>>() {
  71             @Override
  72             @SuppressWarnings("checkstyle:IllegalCatch")
  73             public void onSuccess(final RpcResult<BarrierOutput> result) {
  74                 if (LOG.isDebugEnabled()) {
  75                     LOG.debug("succeeded by getting sweep barrier after post-handshake for device {}",
  76                             connectionContext.getDeviceInfo());
  77                 }
  78                 try {
  79                     ConnectionStatus connectionStatusResult = deviceConnectedHandler.deviceConnected(connectionContext);
  80                     if (connectionStatusResult != ConnectionStatus.MAY_CONTINUE) {
  81                         connectionContext.closeConnection(false);
  82                     }
  83                     SessionStatistics.countEvent(connectionContext.getDeviceInfo().toString(),
  84                             SessionStatistics.ConnectionStatus.CONNECTION_CREATED);
  85                 } catch (final Exception e) {
  86                     LOG.warn("initial processing failed for device {}", connectionContext.getDeviceInfo(), e);
  87                     SessionStatistics.countEvent(connectionContext.getDeviceInfo().toString(),
  88                             SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
  89                     connectionContext.closeConnection(true);
  90                 }
  91             }
  92
  93             @Override
  94             public void onFailure(final Throwable throwable) {
  95                 LOG.warn("failed to get sweep barrier after post-handshake for device {}",
  96                         connectionContext.getDeviceInfo(), throwable);
  97                 connectionContext.closeConnection(false);
  98             }
  99         };
 100     }
 101
 102     private ListenableFuture<RpcResult<BarrierOutput>> fireBarrier(final Short version, final long xid) {
 103         final BarrierInput barrierInput = new BarrierInputBuilder()
 104                 .setXid(xid)
 105                 .setVersion(version)
 106                 .build();
 107         return JdkFutureAdapters.listenInPoolThread(
 108                 this.connectionContext.getConnectionAdapter().barrier(barrierInput));
 109     }
 110
 111     @Override
 112     public void onHandshakeFailure() {
 113         if (LOG.isDebugEnabled()) {
 114             LOG.debug("handshake failed: {}", this.connectionContext.getConnectionAdapter().getRemoteAddress());
 115         }
 116         this.handshakeContext.close();
 117         this.connectionContext.closeConnection(false);
 118     }
 119
 120     @Override
 121     public void setHandshakeContext(final HandshakeContext handshakeContext) {
 122         this.handshakeContext = handshakeContext;
 123     }
 124 }