DefaultProxyArp.java
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/*
* Copyright 2016-present Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.proxyarp;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.onosproject.core.ApplicationId;
import org.onosproject.core.CoreService;
import org.onosproject.incubator.net.neighbour.DefaultNeighbourMessageHandler;
import org.onosproject.incubator.net.neighbour.NeighbourResolutionService;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.edge.EdgePortEvent;
import org.onosproject.net.edge.EdgePortListener;
import org.onosproject.net.edge.EdgePortService;
/**
* Implements proxy ARP and NDP functionality by considering the entire network
* as a single L2 broadcast domain.
* <p>
* This application maintains a DefaultNeighbourMessageHandler on all edge ports
* in the network, and the handler implements the desired proxying functionality.
* </p>
*/
@Component(immediate = true)
public class DefaultProxyArp {
private static final String APP_NAME = "org.onosproject.proxyarp";
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected EdgePortService edgeService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected NeighbourResolutionService neighbourResolutionService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
private ApplicationId appId;
private InternalEdgeListener edgeListener = new InternalEdgeListener();
private DefaultNeighbourMessageHandler defaultHandler = new DefaultNeighbourMessageHandler();
@Activate
protected void activate() {
appId = coreService.registerApplication(APP_NAME);
edgeService.addListener(edgeListener);
edgeService.getEdgePoints().forEach(this::addDefault);
}
@Deactivate
protected void deactivate() {
edgeService.removeListener(edgeListener);
neighbourResolutionService.unregisterNeighbourHandlers(appId);
}
private void addDefault(ConnectPoint port) {
neighbourResolutionService.registerNeighbourHandler(port, defaultHandler, appId);
}
private void removeDefault(ConnectPoint port) {
neighbourResolutionService.unregisterNeighbourHandler(port, defaultHandler, appId);
}
private class InternalEdgeListener implements EdgePortListener {
@Override
public void event(EdgePortEvent event) {
switch (event.type()) {
case EDGE_PORT_ADDED:
addDefault(event.subject());
break;
case EDGE_PORT_REMOVED:
removeDefault(event.subject());
break;
default:
break;
}
}
}
}