samples/learning-switch/src/main/java/org/opendaylight/openflowplugin/learningswitch/LearningSwitchManagerSimpleImpl.java

   1 /**
   2  * Copyright (c) 2013 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.learningswitch;
   9
  10 import org.opendaylight.mdsal.binding.api.DataBroker;
  11 import org.opendaylight.mdsal.binding.api.DataTreeChangeListener;
  12 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  13 import org.opendaylight.mdsal.binding.api.NotificationService;
  14 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
  20 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  21 import org.opendaylight.yangtools.concepts.Registration;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * Listens to packetIn notification.
  28  * <ul>
  29  * <li>in HUB mode simply floods all switch ports (except ingress port)</li>
  30  * <li>in LSWITCH mode collects source MAC address of packetIn and bind it with ingress port.
  31  * If target MAC address is already bound then a flow is created (for direct communication between
  32  * corresponding MACs)</li>
  33  * </ul>
  34  */
  35 public class LearningSwitchManagerSimpleImpl
  36         implements DataTreeChangeListenerRegistrationHolder, LearningSwitchManager {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(LearningSwitchManagerSimpleImpl.class);
  39     private NotificationService notificationService;
  40     private PacketProcessingService packetProcessingService;
  41     private DataBroker data;
  42     private Registration packetInRegistration;
  43     private ListenerRegistration<DataTreeChangeListener> dataTreeChangeListenerRegistration;
  44
  45     /**
  46      * Sets the NotificationService.
  47      *
  48      * @param notificationService the notificationService to set
  49      */
  50     @Override
  51     public void setNotificationService(NotificationService notificationService) {
  52         this.notificationService = notificationService;
  53     }
  54
  55     /**
  56      * Sets the PacketProcessingService.
  57      *
  58      * @param packetProcessingService the packetProcessingService to set
  59      */
  60     @Override
  61     public void setPacketProcessingService(
  62             PacketProcessingService packetProcessingService) {
  63         this.packetProcessingService = packetProcessingService;
  64     }
  65
  66     /**
  67      * Sets the DataBroker.
  68      */
  69     @Override
  70     public void setDataBroker(DataBroker broker) {
  71         this.data = broker;
  72     }
  73
  74     /**
  75      * Starts learning switch.
  76      */
  77     @Override
  78     public void start() {
  79         LOG.debug("start() -->");
  80         FlowCommitWrapper dataStoreAccessor = new FlowCommitWrapperImpl(data);
  81
  82         LearningSwitchHandlerSimpleImpl learningSwitchHandler = new LearningSwitchHandlerSimpleImpl(dataStoreAccessor,
  83                 packetProcessingService, this);
  84         packetInRegistration = notificationService.registerNotificationListener(learningSwitchHandler);
  85
  86         WakeupOnNode wakeupListener = new WakeupOnNode();
  87         wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
  88         final InstanceIdentifier<Table> instanceIdentifier = InstanceIdentifier.create(Nodes.class)
  89                 .child(Node.class)
  90                 .augmentation(FlowCapableNode.class)
  91                 .child(Table.class);
  92         final DataTreeIdentifier<Table> dataTreeIdentifier =
  93                 DataTreeIdentifier.create(LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
  94         dataTreeChangeListenerRegistration = data.registerDataTreeChangeListener(dataTreeIdentifier, wakeupListener);
  95         LOG.debug("start() <--");
  96     }
  97
  98     /**
  99      * Stops the learning switch.
 100      */
 101     @Override
 102     public void stop() {
 103         LOG.debug("stop() -->");
 104         //TODO: remove flow (created in #start())
 105
 106         packetInRegistration.close();
 107
 108         dataTreeChangeListenerRegistration.close();
 109
 110         LOG.debug("stop() <--");
 111     }
 112
 113     @Override
 114     public ListenerRegistration<DataTreeChangeListener> getDataTreeChangeListenerRegistration() {
 115         return dataTreeChangeListenerRegistration;
 116     }
 117 }