blob: 6fe9127e70fc4f082697f5423ea575b08ae44f07 [file] [log] [blame]
/*
* 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.segmentrouting;
import com.google.common.collect.ImmutableSet;
import org.onlab.packet.IpPrefix;
import org.onlab.packet.MacAddress;
import org.onlab.packet.VlanId;
import org.onosproject.incubator.net.routing.ResolvedRoute;
import org.onosproject.incubator.net.routing.RouteEvent;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Handles RouteEvent and manages routing entries.
*/
public class RouteHandler {
private static final Logger log = LoggerFactory.getLogger(RouteHandler.class);
private final SegmentRoutingManager srManager;
public RouteHandler(SegmentRoutingManager srManager) {
this.srManager = srManager;
}
protected void init(DeviceId deviceId) {
srManager.routeService.getNextHops().forEach(nextHop -> {
if (nextHop.location().deviceId().equals(deviceId)) {
srManager.routeService.getRoutesForNextHop(nextHop.ip()).forEach(route -> {
ResolvedRoute resolvedRoute =
new ResolvedRoute(route, nextHop.mac(), nextHop.location());
processRouteAddedInternal(resolvedRoute);
});
}
});
}
protected void processRouteAdded(RouteEvent event) {
log.info("processRouteAdded {}", event);
processRouteAddedInternal(event.subject());
}
private void processRouteAddedInternal(ResolvedRoute route) {
IpPrefix prefix = route.prefix();
MacAddress nextHopMac = route.nextHopMac();
// TODO ResolvedRoute does not contain VLAN information.
// Therefore we only support untagged nexthop for now.
VlanId nextHopVlan = VlanId.NONE;
ConnectPoint location = route.location();
srManager.deviceConfiguration.addSubnet(location, prefix);
srManager.defaultRoutingHandler.populateSubnet(location, ImmutableSet.of(prefix));
srManager.routingRulePopulator.populateRoute(location.deviceId(), prefix,
nextHopMac, nextHopVlan, location.port());
}
protected void processRouteUpdated(RouteEvent event) {
log.info("processRouteUpdated {}", event);
processRouteRemovedInternal(event.prevSubject());
processRouteAddedInternal(event.subject());
}
protected void processRouteRemoved(RouteEvent event) {
log.info("processRouteRemoved {}", event);
processRouteRemovedInternal(event.subject());
}
private void processRouteRemovedInternal(ResolvedRoute route) {
IpPrefix prefix = route.prefix();
MacAddress nextHopMac = route.nextHopMac();
// TODO ResolvedRoute does not contain VLAN information.
// Therefore we only support untagged nexthop for now.
VlanId nextHopVlan = VlanId.NONE;
ConnectPoint location = route.location();
srManager.deviceConfiguration.removeSubnet(location, prefix);
srManager.defaultRoutingHandler.revokeSubnet(ImmutableSet.of(prefix));
srManager.routingRulePopulator.revokeRoute(
location.deviceId(), prefix, nextHopMac, nextHopVlan, location.port());
}
}