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.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketReceived;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.concepts.Registration;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * Listens to packetIn notification.
  29  * <ul>
  30  * <li>in HUB mode simply floods all switch ports (except ingress port)</li>
  31  * <li>in LSWITCH mode collects source MAC address of packetIn and bind it with ingress port.
  32  * If target MAC address is already bound then a flow is created (for direct communication between
  33  * corresponding MACs)</li>
  34  * </ul>
  35  */
  36 public class LearningSwitchManagerSimpleImpl
  37         implements DataTreeChangeListenerRegistrationHolder, LearningSwitchManager {
  38
  39     private static final Logger LOG = LoggerFactory.getLogger(LearningSwitchManagerSimpleImpl.class);
  40     private NotificationService notificationService;
  41     private PacketProcessingService packetProcessingService;
  42     private DataBroker data;
  43     private Registration packetInRegistration;
  44     private ListenerRegistration<DataTreeChangeListener> dataTreeChangeListenerRegistration;
  45
  46     /**
  47      * Sets the NotificationService.
  48      *
  49      * @param notificationService the notificationService to set
  50      */
  51     @Override
  52     public void setNotificationService(NotificationService notificationService) {
  53         this.notificationService = notificationService;
  54     }
  55
  56     /**
  57      * Sets the PacketProcessingService.
  58      *
  59      * @param packetProcessingService the packetProcessingService to set
  60      */
  61     @Override
  62     public void setPacketProcessingService(
  63             PacketProcessingService packetProcessingService) {
  64         this.packetProcessingService = packetProcessingService;
  65     }
  66
  67     /**
  68      * Sets the DataBroker.
  69      */
  70     @Override
  71     public void setDataBroker(DataBroker broker) {
  72         data = broker;
  73     }
  74
  75     /**
  76      * Starts learning switch.
  77      */
  78     @Override
  79     public void start() {
  80         LOG.debug("start() -->");
  81         FlowCommitWrapper dataStoreAccessor = new FlowCommitWrapperImpl(data);
  82
  83         LearningSwitchHandlerSimpleImpl learningSwitchHandler = new LearningSwitchHandlerSimpleImpl(dataStoreAccessor,
  84                 packetProcessingService, this);
  85         packetInRegistration = notificationService.registerListener(PacketReceived.class, learningSwitchHandler);
  86
  87         WakeupOnNode wakeupListener = new WakeupOnNode();
  88         wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
  89         final InstanceIdentifier<Table> instanceIdentifier = InstanceIdentifier.create(Nodes.class)
  90                 .child(Node.class)
  91                 .augmentation(FlowCapableNode.class)
  92                 .child(Table.class);
  93         final DataTreeIdentifier<Table> dataTreeIdentifier =
  94                 DataTreeIdentifier.create(LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
  95         dataTreeChangeListenerRegistration = data.registerDataTreeChangeListener(dataTreeIdentifier, wakeupListener);
  96         LOG.debug("start() <--");
  97     }
  98
  99     /**
 100      * Stops the learning switch.
 101      */
 102     @Override
 103     public void stop() {
 104         LOG.debug("stop() -->");
 105         //TODO: remove flow (created in #start())
 106
 107         packetInRegistration.close();
 108
 109         dataTreeChangeListenerRegistration.close();
 110
 111         LOG.debug("stop() <--");
 112     }
 113
 114     @Override
 115     public ListenerRegistration<DataTreeChangeListener> getDataTreeChangeListenerRegistration() {
 116         return dataTreeChangeListenerRegistration;
 117     }
 118 }