openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/connection/listener/SystemNotificationsListenerImpl.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 package org.opendaylight.openflowplugin.impl.connection.listener;
   9
  10 import com.google.common.annotations.VisibleForTesting;
  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 java.net.InetSocketAddress;
  16 import java.util.concurrent.Future;
  17 import java.util.concurrent.TimeUnit;
  18 import org.opendaylight.openflowjava.protocol.api.connection.ConnectionAdapter;
  19 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  20 import org.opendaylight.openflowplugin.api.openflow.device.Xid;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoInputBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutput;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FeaturesReply;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.DisconnectEvent;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SwitchIdleEvent;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SystemNotificationsListener;
  27 import org.opendaylight.yangtools.yang.common.RpcError;
  28 import org.opendaylight.yangtools.yang.common.RpcResult;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 /**
  33  *
  34  */
  35 public class SystemNotificationsListenerImpl implements SystemNotificationsListener {
  36
  37     private ConnectionContext connectionContext;
  38     private static final Logger LOG = LoggerFactory.getLogger(SystemNotificationsListenerImpl.class);
  39     @VisibleForTesting
  40     static final long MAX_ECHO_REPLY_TIMEOUT = 2000;
  41
  42
  43     /**
  44      * @param connectionContext
  45      */
  46     public SystemNotificationsListenerImpl(ConnectionContext connectionContext) {
  47         this.connectionContext = connectionContext;
  48     }
  49
  50     @Override
  51     public void onDisconnectEvent(DisconnectEvent notification) {
  52         // TODO Auto-generated method stub
  53         disconnect();
  54     }
  55
  56     @Override
  57     public void onSwitchIdleEvent(SwitchIdleEvent notification) {
  58         new Thread(new Runnable() {
  59             @Override
  60             public void run() {
  61                 boolean shouldBeDisconnected = true;
  62
  63                 final InetSocketAddress remoteAddress = connectionContext.getConnectionAdapter().getRemoteAddress();
  64
  65                 if (ConnectionContext.CONNECTION_STATE.WORKING.equals(connectionContext.getConnectionState())) {
  66                     FeaturesReply features = connectionContext.getFeatures();
  67                     LOG.debug(
  68                             "first idle state occured, node={}|auxId={}",
  69                             remoteAddress, features.getAuxiliaryId());
  70                     connectionContext.setConnectionState(ConnectionContext.CONNECTION_STATE.TIMEOUTING);
  71                     EchoInputBuilder builder = new EchoInputBuilder();
  72                     builder.setVersion(features.getVersion());
  73                     Xid xid = new Xid(0);
  74                     builder.setXid(xid.getValue());
  75
  76                     Future<RpcResult<EchoOutput>> echoReplyFuture = connectionContext.getConnectionAdapter()
  77                             .echo(builder.build());
  78
  79                     try {
  80                         RpcResult<EchoOutput> echoReplyValue = echoReplyFuture.get(MAX_ECHO_REPLY_TIMEOUT, TimeUnit.MILLISECONDS);
  81                         if (echoReplyValue.isSuccessful()) {
  82                             connectionContext.setConnectionState(ConnectionContext.CONNECTION_STATE.WORKING);
  83                             shouldBeDisconnected = false;
  84                         } else {
  85                             for (RpcError replyError : echoReplyValue
  86                                     .getErrors()) {
  87                                 Throwable cause = replyError.getCause();
  88                                 LOG.warn("while receiving echoReply [{}] in TIMEOUTING state {} ",
  89                                         remoteAddress,
  90                                         cause.getMessage());
  91                                 LOG.trace("while receiving echoReply [{}] in TIMEOUTING state ..", remoteAddress, cause);
  92                             }
  93                         }
  94                     } catch (Exception e) {
  95                         LOG.warn("while waiting for echoReply in TIMEOUTING state: {}", e.getMessage());
  96                         LOG.trace("while waiting for echoReply in TIMEOUTING state ..", remoteAddress, e);
  97                     }
  98                 }
  99                 if (shouldBeDisconnected) {
 100                     disconnect();
 101                 }
 102             }
 103         }).start();
 104     }
 105
 106     private void disconnect() {
 107         final ConnectionAdapter connectionAdapter = connectionContext.getConnectionAdapter();
 108         short auxId = -1;
 109         if (null != connectionContext.getFeatures() && null != connectionContext.getFeatures().getAuxiliaryId()) {
 110             auxId = connectionContext.getFeatures().getAuxiliaryId();
 111         }
 112         final Short auxiliaryId = auxId;
 113         final InetSocketAddress remoteAddress = connectionAdapter.getRemoteAddress();
 114
 115         LOG.trace("disconnecting: node={}|auxId={}|connection state = {}",
 116                 remoteAddress,
 117                 auxiliaryId,
 118                 connectionContext.getConnectionState());
 119
 120         ListenableFuture<Boolean> result = null;
 121         if (connectionAdapter.isAlive()) {
 122             result = JdkFutureAdapters.listenInPoolThread(connectionAdapter.disconnect());
 123         } else {
 124             LOG.debug("connection already disconnected");
 125             result = Futures.immediateFuture(true);
 126         }
 127         connectionContext.setConnectionState(ConnectionContext.CONNECTION_STATE.RIP);
 128         Futures.addCallback(result, new FutureCallback<Boolean>() {
 129             @Override
 130             public void onSuccess(final Boolean aBoolean) {
 131                 LOG.debug("Connection node={}|auxId={}|connection state = {}, closed successfully:{}.",
 132                         remoteAddress,
 133                         auxiliaryId,
 134                         connectionContext.getConnectionState(),
 135                         aBoolean);
 136             }
 137
 138             @Override
 139             public void onFailure(final Throwable throwable) {
 140                 LOG.debug("Connection node={}|auxId={}|connection state = {} close failed.",
 141                         remoteAddress,
 142                         auxiliaryId,
 143                         connectionContext.getConnectionState());
 144             }
 145         });
 146
 147         connectionContext.propagateClosingConnection();
 148     }
 149
 150 }