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.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.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 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 DataTreeChangeListenerRegistrationHolder, LearningSwitchManager {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(LearningSwitchManagerSimpleImpl.class);
  38     private NotificationService notificationService;
  39     private PacketProcessingService packetProcessingService;
  40     private DataBroker data;
  41     private Registration packetInRegistration;
  42     private ListenerRegistration<DataTreeChangeListener> dataTreeChangeListenerRegistration;
  43
  44     /**
  45      * @param notificationService the notificationService to set
  46      */
  47     @Override
  48     public void setNotificationService(NotificationService notificationService) {
  49         this.notificationService = notificationService;
  50     }
  51
  52     /**
  53      * @param packetProcessingService the packetProcessingService to set
  54      */
  55     @Override
  56     public void setPacketProcessingService(
  57             PacketProcessingService packetProcessingService) {
  58         this.packetProcessingService = packetProcessingService;
  59     }
  60
  61     /**
  62      * @param data the data to set
  63      */
  64     @Override
  65     public void setDataBroker(DataBroker data) {
  66         this.data = data;
  67     }
  68
  69     /**
  70      * starting learning switch
  71      */
  72     @Override
  73     public void start() {
  74         LOG.debug("start() -->");
  75         FlowCommitWrapper dataStoreAccessor = new FlowCommitWrapperImpl(data);
  76
  77         LearningSwitchHandlerSimpleImpl learningSwitchHandler = new LearningSwitchHandlerSimpleImpl();
  78         learningSwitchHandler.setRegistrationPublisher(this);
  79         learningSwitchHandler.setDataStoreAccessor(dataStoreAccessor);
  80         learningSwitchHandler.setPacketProcessingService(packetProcessingService);
  81         packetInRegistration = notificationService.registerNotificationListener(learningSwitchHandler);
  82
  83         WakeupOnNode wakeupListener = new WakeupOnNode();
  84         wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
  85         final InstanceIdentifier<Table> instanceIdentifier = InstanceIdentifier.create(Nodes.class)
  86                 .child(Node.class)
  87                 .augmentation(FlowCapableNode.class)
  88                 .child(Table.class);
  89         final DataTreeIdentifier<Table> dataTreeIdentifier = new DataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
  90         dataTreeChangeListenerRegistration = data.registerDataTreeChangeListener(dataTreeIdentifier, wakeupListener);
  91         LOG.debug("start() <--");
  92     }
  93
  94     /**
  95      * stopping learning switch
  96      */
  97     @Override
  98     public void stop() {
  99         LOG.debug("stop() -->");
 100         //TODO: remove flow (created in #start())
 101         try {
 102             packetInRegistration.close();
 103         } catch (Exception e) {
 104             LOG.warn("closing packetInRegistration failed: {}", e.getMessage());
 105             LOG.debug("closing packetInRegistration failed..", e);
 106         }
 107         try {
 108             dataTreeChangeListenerRegistration.close();
 109         } catch (Exception e) {
 110             LOG.warn("failed to close dataTreeChangeListenerRegistration: {}", e.getMessage());
 111             LOG.debug("failed to close dataTreeChangeListenerRegistration..", e);
 112         }
 113         LOG.debug("stop() <--");
 114     }
 115
 116     @Override
 117     public ListenerRegistration<DataTreeChangeListener> getDataTreeChangeListenerRegistration() {
 118         return dataTreeChangeListenerRegistration;
 119     }
 120 }