samples/learning-switch/src/main/java/org/opendaylight/openflowplugin/learningswitch/multi/LearningSwitchManagerMultiImpl.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.multi;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  11 import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
  12 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  14 import org.opendaylight.controller.sal.binding.api.NotificationService;
  15 import org.opendaylight.openflowplugin.learningswitch.DataTreeChangeListenerRegistrationHolder;
  16 import org.opendaylight.openflowplugin.learningswitch.FlowCommitWrapper;
  17 import org.opendaylight.openflowplugin.learningswitch.FlowCommitWrapperImpl;
  18 import org.opendaylight.openflowplugin.learningswitch.LearningSwitchManager;
  19 import org.opendaylight.openflowplugin.learningswitch.WakeupOnNode;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
  25 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  26 import org.opendaylight.yangtools.concepts.Registration;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 /**
  32  * Listens to packetIn notification and
  33  * <ul>
  34  * <li>in HUB mode simply floods all switch ports (except ingress port)</li>
  35  * <li>in LSWITCH mode collects source MAC address of packetIn and bind it with ingress port.
  36  * If target MAC address is already bound then a flow is created (for direct communication between
  37  * corresponding MACs)</li>
  38  * </ul>
  39  */
  40 public class LearningSwitchManagerMultiImpl implements DataTreeChangeListenerRegistrationHolder, LearningSwitchManager {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(LearningSwitchManagerMultiImpl.class);
  43     private NotificationService notificationService;
  44     private PacketProcessingService packetProcessingService;
  45     private DataBroker data;
  46     private Registration packetInRegistration;
  47     private ListenerRegistration<DataTreeChangeListener> dataTreeChangeListenerRegistration;
  48
  49     /**
  50      * @param notificationService the notificationService to set
  51      */
  52     @Override
  53     public void setNotificationService(NotificationService notificationService) {
  54         this.notificationService = notificationService;
  55     }
  56
  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      * @param data the data to set
  68      */
  69     @Override
  70     public void setDataBroker(DataBroker data) {
  71         this.data = data;
  72     }
  73
  74     /**
  75      * starting learning switch
  76      */
  77     @Override
  78     public void start() {
  79         LOG.debug("start() -->");
  80         FlowCommitWrapper dataStoreAccessor = new FlowCommitWrapperImpl(data);
  81
  82         PacketInDispatcherImpl packetInDispatcher = new PacketInDispatcherImpl();
  83         MultipleLearningSwitchHandlerFacadeImpl learningSwitchHandler = new MultipleLearningSwitchHandlerFacadeImpl();
  84         learningSwitchHandler.setRegistrationPublisher(this);
  85         learningSwitchHandler.setDataStoreAccessor(dataStoreAccessor);
  86         learningSwitchHandler.setPacketProcessingService(packetProcessingService);
  87         learningSwitchHandler.setPacketInDispatcher(packetInDispatcher);
  88         packetInRegistration = notificationService.registerNotificationListener(packetInDispatcher);
  89
  90         WakeupOnNode wakeupListener = new WakeupOnNode();
  91         wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
  92         final InstanceIdentifier<Table> instanceIdentifier = InstanceIdentifier.create(Nodes.class)
  93                 .child(Node.class)
  94                 .augmentation(FlowCapableNode.class)
  95                 .child(Table.class);
  96         final DataTreeIdentifier<Table> dataTreeIdentifier = new DataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
  97         dataTreeChangeListenerRegistration = data.registerDataTreeChangeListener(dataTreeIdentifier, wakeupListener);
  98         LOG.debug("start() <--");
  99     }
 100
 101     /**
 102      * stopping learning switch
 103      */
 104     @Override
 105     public void stop() {
 106         LOG.debug("stop() -->");
 107         //TODO: remove flow (created in #start())
 108         try {
 109             packetInRegistration.close();
 110         } catch (Exception e) {
 111             LOG.warn("Error unregistering packet in listener: {}", e.getMessage());
 112             LOG.debug("Error unregistering packet in listener.. ", e);
 113         }
 114         try {
 115             dataTreeChangeListenerRegistration.close();
 116         } catch (Exception e) {
 117             LOG.warn("Error unregistering data change listener: {}", e.getMessage());
 118             LOG.debug("Error unregistering data change listener.. ", e);
 119         }
 120         LOG.debug("stop() <--");
 121     }
 122
 123
 124     @Override
 125     public ListenerRegistration<DataTreeChangeListener> getDataTreeChangeListenerRegistration() {
 126         return dataTreeChangeListenerRegistration;
 127     }
 128 }