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.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 /**
  26  * Listens to packetIn notification and
  27  * <ul>
  28  * <li>in HUB mode simply floods all switch ports (except ingress port)</li>
  29  * <li>in LSWITCH mode collects source MAC address of packetIn and bind it with ingress port.
  30  * If target MAC address is already bound then a flow is created (for direct communication between
  31  * corresponding MACs)</li>
  32  * </ul>
  33  */
  34 public class LearningSwitchManagerSimpleImpl implements DataChangeListenerRegistrationHolder,
  35         LearningSwitchManager {
  36
  37     protected static final Logger LOG = LoggerFactory
  38             .getLogger(LearningSwitchManagerSimpleImpl.class);
  39
  40     private NotificationService notificationService;
  41     private PacketProcessingService packetProcessingService;
  42     private DataBroker data;
  43
  44     private Registration packetInRegistration;
  45
  46     private ListenerRegistration<DataChangeListener> dataChangeListenerRegistration;
  47
  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      * @param packetProcessingService the packetProcessingService to set
  58      */
  59     @Override
  60     public void setPacketProcessingService(
  61             PacketProcessingService packetProcessingService) {
  62         this.packetProcessingService = packetProcessingService;
  63     }
  64
  65     /**
  66      * @param data the data to set
  67      */
  68     @Override
  69     public void setDataBroker(DataBroker data) {
  70         this.data = data;
  71     }
  72
  73     /**
  74      * starting learning switch
  75      */
  76     @Override
  77     public void start() {
  78         LOG.debug("start() -->");
  79         FlowCommitWrapper dataStoreAccessor = new FlowCommitWrapperImpl(data);
  80
  81         LearningSwitchHandlerSimpleImpl learningSwitchHandler = new LearningSwitchHandlerSimpleImpl();
  82         learningSwitchHandler.setRegistrationPublisher(this);
  83         learningSwitchHandler.setDataStoreAccessor(dataStoreAccessor);
  84         learningSwitchHandler.setPacketProcessingService(packetProcessingService);
  85         packetInRegistration = notificationService.registerNotificationListener(learningSwitchHandler);
  86
  87         WakeupOnNode wakeupListener = new WakeupOnNode();
  88         wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
  89         dataChangeListenerRegistration = data.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  90                 InstanceIdentifier.builder(Nodes.class)
  91                     .child(Node.class)
  92                     .augmentation(FlowCapableNode.class)
  93                     .child(Table.class).build(),
  94                 wakeupListener,
  95                 DataBroker.DataChangeScope.SUBTREE);
  96         LOG.debug("start() <--");
  97     }
  98
  99     /**
 100      * stopping learning switch
 101      */
 102     @Override
 103     public void stop() {
 104         LOG.debug("stop() -->");
 105         //TODO: remove flow (created in #start())
 106         try {
 107             packetInRegistration.close();
 108         } catch (Exception e) {
 109             LOG.warn("closing packetInRegistration failed: {}", e.getMessage());
 110             LOG.debug("closing packetInRegistration failed..", e);
 111         }
 112         try {
 113             dataChangeListenerRegistration.close();
 114         } catch (Exception e) {
 115             LOG.warn("failed to close dataChangeListenerRegistration: {}", e.getMessage());
 116             LOG.debug("failed to close dataChangeListenerRegistration..", e);
 117         }
 118         LOG.debug("stop() <--");
 119     }
 120
 121
 122     @Override
 123     public ListenerRegistration<DataChangeListener> getDataChangeListenerRegistration() {
 124         return dataChangeListenerRegistration;
 125     }
 126 }