openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/connection/ConnectionContextImpl.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;
  10
  11 import java.math.BigInteger;
  12 import java.net.InetSocketAddress;
  13 import org.opendaylight.openflowjava.protocol.api.connection.ConnectionAdapter;
  14 import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueue;
  15 import org.opendaylight.openflowjava.protocol.api.connection.OutboundQueueHandlerRegistration;
  16 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  17 import org.opendaylight.openflowplugin.api.openflow.connection.HandshakeContext;
  18 import org.opendaylight.openflowplugin.api.openflow.connection.OutboundQueueProvider;
  19 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceDisconnectedHandler;
  20 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.SessionStatistics;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FeaturesReply;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  *
  28  */
  29 public class ConnectionContextImpl implements ConnectionContext {
  30
  31     private final ConnectionAdapter connectionAdapter;
  32     private volatile CONNECTION_STATE connectionState;
  33     private FeaturesReply featuresReply;
  34     private NodeId nodeId;
  35     private DeviceDisconnectedHandler deviceDisconnectedHandler;
  36     private static final Logger LOG = LoggerFactory.getLogger(ConnectionContextImpl.class);
  37     private OutboundQueueProvider outboundQueueProvider;
  38     private OutboundQueueHandlerRegistration<OutboundQueueProvider> outboundQueueHandlerRegistration;
  39     private HandshakeContext handshakeContext;
  40
  41     /**
  42      * @param connectionAdapter
  43      */
  44     public ConnectionContextImpl(final ConnectionAdapter connectionAdapter) {
  45         this.connectionAdapter = connectionAdapter;
  46     }
  47
  48     @Override
  49     public ConnectionAdapter getConnectionAdapter() {
  50         return connectionAdapter;
  51     }
  52
  53     @Override
  54     public OutboundQueue getOutboundQueueProvider() {
  55         return this.outboundQueueProvider;
  56     }
  57
  58     @Override
  59     public void setOutboundQueueProvider(final OutboundQueueProvider outboundQueueProvider) {
  60         this.outboundQueueProvider = outboundQueueProvider;
  61     }
  62
  63     @Override
  64     public CONNECTION_STATE getConnectionState() {
  65         return connectionState;
  66     }
  67
  68     @Override
  69     public NodeId getNodeId() {
  70         return nodeId;
  71     }
  72
  73     @Override
  74     public void setNodeId(final NodeId nodeId) {
  75         this.nodeId = nodeId;
  76     }
  77
  78     @Override
  79     public FeaturesReply getFeatures() {
  80         return featuresReply;
  81     }
  82
  83     @Override
  84     public void setDeviceDisconnectedHandler(final DeviceDisconnectedHandler deviceDisconnectedHandler) {
  85         this.deviceDisconnectedHandler = deviceDisconnectedHandler;
  86     }
  87
  88     @Override
  89     public void setFeatures(final FeaturesReply featuresReply) {
  90         this.featuresReply = featuresReply;
  91     }
  92
  93     @Override
  94     public void closeConnection(boolean propagate) {
  95         if (null == nodeId){
  96             SessionStatistics.countEvent(connectionAdapter.getRemoteAddress().toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
  97         } else {
  98             SessionStatistics.countEvent(nodeId.toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_OFP);
  99         }
 100         final BigInteger datapathId = featuresReply != null ? featuresReply.getDatapathId() : BigInteger.ZERO;
 101         LOG.debug("Actively closing connection: {}, datapathId:{}.",
 102                 connectionAdapter.getRemoteAddress(), datapathId);
 103         connectionState = ConnectionContext.CONNECTION_STATE.RIP;
 104
 105         unregisterOutboundQueue();
 106         closeHandshakeContext();
 107
 108         if (getConnectionAdapter().isAlive()) {
 109             getConnectionAdapter().disconnect();
 110         }
 111
 112         if (propagate) {
 113             propagateDeviceDisconnectedEvent();
 114         }
 115     }
 116
 117     private void closeHandshakeContext() {
 118         if (handshakeContext != null) {
 119             try {
 120                 handshakeContext.close();
 121             } catch (Exception e) {
 122                 LOG.info("handshake context closing failed: ", e);
 123             } finally {
 124                 handshakeContext = null;
 125             }
 126         }
 127     }
 128
 129     @Override
 130     public void onConnectionClosed() {
 131         if (null == nodeId){
 132             SessionStatistics.countEvent(connectionAdapter.getRemoteAddress().toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_DEVICE);
 133         } else {
 134             SessionStatistics.countEvent(nodeId.toString(), SessionStatistics.ConnectionStatus.CONNECTION_DISCONNECTED_BY_DEVICE);
 135         }
 136         connectionState = ConnectionContext.CONNECTION_STATE.RIP;
 137
 138         final InetSocketAddress remoteAddress = connectionAdapter.getRemoteAddress();
 139         final Short auxiliaryId;
 140         if (null != getFeatures() && null != getFeatures().getAuxiliaryId()) {
 141             auxiliaryId = getFeatures().getAuxiliaryId();
 142         } else {
 143             auxiliaryId = 0;
 144         }
 145
 146         LOG.debug("disconnecting: node={}|auxId={}|connection state = {}",
 147                 remoteAddress,
 148                 auxiliaryId,
 149                 getConnectionState());
 150
 151         unregisterOutboundQueue();
 152         closeHandshakeContext();
 153         propagateDeviceDisconnectedEvent();
 154     }
 155
 156     private void propagateDeviceDisconnectedEvent() {
 157         if (null != deviceDisconnectedHandler) {
 158             final BigInteger datapathId = featuresReply != null ? featuresReply.getDatapathId() : BigInteger.ZERO;
 159             LOG.debug("Propagating connection closed event: {}, datapathId:{}.",
 160                     connectionAdapter.getRemoteAddress(), datapathId);
 161             deviceDisconnectedHandler.onDeviceDisconnected(this);
 162         }
 163     }
 164
 165     @Override
 166     public void setOutboundQueueHandleRegistration(OutboundQueueHandlerRegistration<OutboundQueueProvider> outboundQueueHandlerRegistration) {
 167         this.outboundQueueHandlerRegistration = outboundQueueHandlerRegistration;
 168     }
 169
 170     private void unregisterOutboundQueue() {
 171         if (outboundQueueHandlerRegistration != null) {
 172             outboundQueueHandlerRegistration.close();
 173             outboundQueueHandlerRegistration = null;
 174         }
 175     }
 176
 177     @Override
 178     public synchronized void changeStateToHandshaking() {
 179         connectionState = CONNECTION_STATE.HANDSHAKING;
 180     }
 181
 182     @Override
 183     public synchronized void changeStateToTimeouting() {
 184         connectionState = CONNECTION_STATE.TIMEOUTING;
 185     }
 186
 187     @Override
 188     public synchronized void changeStateToWorking() {
 189         connectionState = CONNECTION_STATE.WORKING;
 190     }
 191
 192     @Override
 193     public void setHandshakeContext(HandshakeContext handshakeContext) {
 194         this.handshakeContext = handshakeContext;
 195     }
 196 }