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         LOG.debug("handshake succeeded: {}", connectionContext.getConnectionAdapter().getRemoteAddress());
  54         closeHandshakeContext();
  55         connectionContext.changeStateToWorking();
  56         connectionContext.setFeatures(featureOutput);
  57         connectionContext.setNodeId(InventoryDataServiceUtil.nodeIdFromDatapathId(featureOutput.getDatapathId()));
  58         connectionContext.handshakeSuccessful();
  59
  60         // fire barrier in order to sweep all handshake and posthandshake messages before continue
  61         final ListenableFuture<RpcResult<BarrierOutput>> barrier = fireBarrier(version, 0L);
  62         Futures.addCallback(barrier, addBarrierCallback());
  63     }
  64
  65     private FutureCallback<RpcResult<BarrierOutput>> addBarrierCallback() {
  66         return new FutureCallback<RpcResult<BarrierOutput>>() {
  67             @Override
  68             public void onSuccess(@Nullable final RpcResult<BarrierOutput> result) {
  69                 LOG.debug("succeeded by getting sweep barrier after post-handshake for device {}", connectionContext.getNodeId().getValue());
  70                 try {
  71                     ConnectionStatus connectionStatusResult = deviceConnectedHandler.deviceConnected(connectionContext);
  72                     if (!ConnectionStatus.MAY_CONTINUE.equals(connectionStatusResult)) {
  73                         connectionContext.closeConnection(ConnectionStatus.ALREADY_CONNECTED.equals(connectionStatusResult));
  74                     }
  75                     SessionStatistics.countEvent(connectionContext.getNodeId().toString(),
  76                             SessionStatistics.ConnectionStatus.CONNECTION_CREATED);
  77                 } catch (final Exception e) {
  78                     LOG.error("ConnectionContext initial processing failed: ", e);
  79                     SessionStatistics.countEvent(connectionContext.getNodeId().toString(),
  80                             SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
  81                     connectionContext.closeConnection(true);
  82                 }
  83             }
  84
  85             @Override
  86             public void onFailure(final Throwable t) {
  87                 LOG.error("failed to get sweep barrier after post-handshake for device {}", connectionContext.getNodeId());
  88                 connectionContext.closeConnection(false);
  89             }
  90         };
  91     }
  92
  93     protected ListenableFuture<RpcResult<BarrierOutput>> fireBarrier(final Short version, final long xid) {
  94         final BarrierInput barrierInput = new BarrierInputBuilder()
  95                 .setXid(xid)
  96                 .setVersion(version)
  97                 .build();
  98         return JdkFutureAdapters.listenInPoolThread(
  99                 connectionContext.getConnectionAdapter().barrier(barrierInput));
 100     }
 101
 102     @Override
 103     public void onHandshakeFailure() {
 104         LOG.debug("handshake failed: {}", connectionContext.getConnectionAdapter().getRemoteAddress());
 105         closeHandshakeContext();
 106         connectionContext.closeConnection(false);
 107     }
 108
 109     private void closeHandshakeContext() {
 110         try {
 111             handshakeContext.close();
 112         } catch (final Exception e) {
 113             LOG.error("Closing handshake context failed: {}", e.getMessage());
 114             LOG.debug("Detail in handshake context close: {}", e);
 115         }
 116     }
 117
 118     @Override
 119     public void setHandshakeContext(final HandshakeContext handshakeContext) {
 120         this.handshakeContext = handshakeContext;
 121     }
 122 }