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.controller.md.sal.binding.api.DataBroker;
  11 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  12 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  13 import org.opendaylight.controller.sal.binding.api.NotificationService;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
  19 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  20 import org.opendaylight.yangtools.concepts.Registration;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * Listens to packetIn notification and
  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 implements DataChangeListenerRegistrationHolder,
  36         LearningSwitchManager {
  37
  38     protected static final Logger LOG = LoggerFactory
  39             .getLogger(LearningSwitchManagerSimpleImpl.class);
  40
  41     private NotificationService notificationService;
  42     private PacketProcessingService packetProcessingService;
  43     private DataBroker data;
  44
  45     private Registration packetInRegistration;
  46
  47     private ListenerRegistration<DataChangeListener> dataChangeListenerRegistration;
  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         LearningSwitchHandlerSimpleImpl learningSwitchHandler = new LearningSwitchHandlerSimpleImpl();
  83         learningSwitchHandler.setRegistrationPublisher(this);
  84         learningSwitchHandler.setDataStoreAccessor(dataStoreAccessor);
  85         learningSwitchHandler.setPacketProcessingService(packetProcessingService);
  86         packetInRegistration = notificationService.registerNotificationListener(learningSwitchHandler);
  87
  88         WakeupOnNode wakeupListener = new WakeupOnNode();
  89         wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
  90         dataChangeListenerRegistration = data.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  91                 InstanceIdentifier.builder(Nodes.class)
  92                     .child(Node.class)
  93                     .augmentation(FlowCapableNode.class)
  94                     .child(Table.class).toInstance(),
  95                 wakeupListener,
  96                 DataBroker.DataChangeScope.SUBTREE);
  97         LOG.debug("start() <--");
  98     }
  99
 100     /**
 101      * stopping learning switch
 102      */
 103     @Override
 104     public void stop() {
 105         LOG.debug("stop() -->");
 106         //TODO: remove flow (created in #start())
 107         try {
 108             packetInRegistration.close();
 109         } catch (Exception e) {
 110             LOG.error(e.getMessage(), e);
 111         }
 112         try {
 113             dataChangeListenerRegistration.close();
 114         } catch (Exception e) {
 115             LOG.error(e.getMessage(), e);
 116         }
 117         LOG.debug("stop() <--");
 118     }
 119
 120
 121     @Override
 122     public ListenerRegistration<DataChangeListener> getDataChangeListenerRegistration() {
 123         return dataChangeListenerRegistration;
 124     }
 125 }