VplsNeighbourHandler.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.vpls;
import com.google.common.collect.Maps;
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.intf.Interface;
import org.onosproject.incubator.net.intf.InterfaceEvent;
import org.onosproject.incubator.net.intf.InterfaceListener;
import org.onosproject.incubator.net.intf.InterfaceService;
import org.onosproject.incubator.net.neighbour.NeighbourMessageContext;
import org.onosproject.incubator.net.neighbour.NeighbourMessageHandler;
import org.onosproject.incubator.net.neighbour.NeighbourResolutionService;
import org.onosproject.net.Host;
import org.onosproject.net.host.HostService;
import org.slf4j.Logger;
import java.util.Map;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Handles neighbour messages for VPLS use case.
* Handlers will be changed automatically by interface or network configuration
* events.
*/
@Component(immediate = true)
public class VplsNeighbourHandler {
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected CoreService coreService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected InterfaceService interfaceService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected NeighbourResolutionService neighbourService;
private VplsInterfaceListener interfaceListener
= new VplsInterfaceListener();
private VplsNeighbourMessageHandler neighbourHandler =
new VplsNeighbourMessageHandler();
private final Logger log = getLogger(getClass());
private Map<Interface, NeighbourMessageHandler> neighbourHandlers =
Maps.newHashMap();
private ApplicationId appId;
@Activate
protected void activate() {
appId = coreService.registerApplication(Vpls.VPLS_APP);
interfaceService.addListener(interfaceListener);
interfaceService.getInterfaces().forEach(intf -> {
neighbourHandlers.put(intf, neighbourHandler);
neighbourService.registerNeighbourHandler(intf, neighbourHandler, appId);
});
log.debug("Activated");
}
@Deactivate
protected void deactivate() {
interfaceService.removeListener(interfaceListener);
neighbourHandlers.entrySet().forEach(e -> {
neighbourService.unregisterNeighbourHandler(e.getKey(), e.getValue(), appId);
});
log.debug("Deactivated");
}
private void configNeighbourHandler(Interface intf,
NeighbourMessageHandler handler,
InterfaceEvent.Type eventType) {
switch (eventType) {
case INTERFACE_ADDED:
neighbourHandlers.put(intf, handler);
neighbourService.registerNeighbourHandler(intf, handler, appId);
break;
case INTERFACE_REMOVED:
neighbourHandlers.remove(intf, handler);
neighbourService.unregisterNeighbourHandler(intf, handler, appId);
break;
case INTERFACE_UPDATED:
break;
default:
break;
}
}
/**
* Handler for neighbour messages.
*/
private class VplsNeighbourMessageHandler implements NeighbourMessageHandler {
@Override
public void handleMessage(NeighbourMessageContext context,
HostService hostService) {
switch (context.type()) {
case REQUEST:
interfaceService.getInterfacesByVlan(context.vlan())
.stream()
.map(Interface::connectPoint)
.forEach(context::proxy);
break;
case REPLY:
hostService.getHostsByMac(context.dstMac())
.stream()
.filter(host -> host.vlan().equals(context.vlan()))
.map(Host::location)
.forEach(context::proxy);
break;
default:
log.warn("Unknown context type: {}", context.type());
break;
}
}
}
/**
* Listener for interface configuration events.
*/
private class VplsInterfaceListener implements InterfaceListener {
@Override
public void event(InterfaceEvent event) {
configNeighbourHandler(event.subject(), neighbourHandler, event.type());
}
}
}