/**
* Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.openflowplugin.learningswitch;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener;
import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.controller.sal.binding.api.NotificationService;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.Table;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.PacketProcessingService;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.concepts.Registration;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Listens to packetIn notification and
*
* - in HUB mode simply floods all switch ports (except ingress port)
* - in LSWITCH mode collects source MAC address of packetIn and bind it with ingress port.
* If target MAC address is already bound then a flow is created (for direct communication between
* corresponding MACs)
*
*/
public class LearningSwitchManagerSimpleImpl implements DataTreeChangeListenerRegistrationHolder, LearningSwitchManager {
private static final Logger LOG = LoggerFactory.getLogger(LearningSwitchManagerSimpleImpl.class);
private NotificationService notificationService;
private PacketProcessingService packetProcessingService;
private DataBroker data;
private Registration packetInRegistration;
private ListenerRegistration dataTreeChangeListenerRegistration;
/**
* @param notificationService the notificationService to set
*/
@Override
public void setNotificationService(NotificationService notificationService) {
this.notificationService = notificationService;
}
/**
* @param packetProcessingService the packetProcessingService to set
*/
@Override
public void setPacketProcessingService(
PacketProcessingService packetProcessingService) {
this.packetProcessingService = packetProcessingService;
}
/**
* @param data the data to set
*/
@Override
public void setDataBroker(DataBroker data) {
this.data = data;
}
/**
* starting learning switch
*/
@Override
public void start() {
LOG.debug("start() -->");
FlowCommitWrapper dataStoreAccessor = new FlowCommitWrapperImpl(data);
LearningSwitchHandlerSimpleImpl learningSwitchHandler = new LearningSwitchHandlerSimpleImpl();
learningSwitchHandler.setRegistrationPublisher(this);
learningSwitchHandler.setDataStoreAccessor(dataStoreAccessor);
learningSwitchHandler.setPacketProcessingService(packetProcessingService);
packetInRegistration = notificationService.registerNotificationListener(learningSwitchHandler);
WakeupOnNode wakeupListener = new WakeupOnNode();
wakeupListener.setLearningSwitchHandler(learningSwitchHandler);
final InstanceIdentifier instanceIdentifier = InstanceIdentifier.create(Nodes.class)
.child(Node.class)
.augmentation(FlowCapableNode.class)
.child(Table.class);
final DataTreeIdentifier dataTreeIdentifier = new DataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
dataTreeChangeListenerRegistration = data.registerDataTreeChangeListener(dataTreeIdentifier, wakeupListener);
LOG.debug("start() <--");
}
/**
* stopping learning switch
*/
@Override
public void stop() {
LOG.debug("stop() -->");
//TODO: remove flow (created in #start())
try {
packetInRegistration.close();
} catch (Exception e) {
LOG.warn("closing packetInRegistration failed: {}", e.getMessage());
LOG.debug("closing packetInRegistration failed..", e);
}
try {
dataTreeChangeListenerRegistration.close();
} catch (Exception e) {
LOG.warn("failed to close dataTreeChangeListenerRegistration: {}", e.getMessage());
LOG.debug("failed to close dataTreeChangeListenerRegistration..", e);
}
LOG.debug("stop() <--");
}
@Override
public ListenerRegistration getDataTreeChangeListenerRegistration() {
return dataTreeChangeListenerRegistration;
}
}