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/*
* Copyright 2015 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.net.intent.impl.compiler;
import static java.util.Arrays.asList;
import static org.onosproject.net.DefaultEdgeLink.createEdgeLink;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DefaultPath;
import org.onosproject.net.Link;
import org.onosproject.net.Path;
import org.onosproject.net.intent.Intent;
import org.onosproject.net.intent.MplsIntent;
import org.onosproject.net.intent.MplsPathIntent;
import org.onosproject.net.provider.ProviderId;
import org.onosproject.net.resource.link.LinkResourceAllocations;
@Component(immediate = true)
public class MplsIntentCompiler extends ConnectivityIntentCompiler<MplsIntent> {
// TODO: use off-the-shell core provider ID
private static final ProviderId PID =
new ProviderId("core", "org.onosproject.core", true);
// TODO: consider whether the default cost is appropriate or not
public static final int DEFAULT_COST = 1;
@Activate
public void activate() {
intentManager.registerCompiler(MplsIntent.class, this);
}
@Deactivate
public void deactivate() {
intentManager.unregisterCompiler(MplsIntent.class);
}
@Override
public List<Intent> compile(MplsIntent intent, List<Intent> installable,
Set<LinkResourceAllocations> resources) {
ConnectPoint ingressPoint = intent.ingressPoint();
ConnectPoint egressPoint = intent.egressPoint();
if (ingressPoint.deviceId().equals(egressPoint.deviceId())) {
List<Link> links = asList(createEdgeLink(ingressPoint, true), createEdgeLink(egressPoint, false));
return asList(createPathIntent(new DefaultPath(PID, links, DEFAULT_COST), intent));
}
List<Link> links = new ArrayList<>();
Path path = getPath(intent, ingressPoint.deviceId(),
egressPoint.deviceId());
links.add(createEdgeLink(ingressPoint, true));
links.addAll(path.links());
links.add(createEdgeLink(egressPoint, false));
return asList(createPathIntent(new DefaultPath(PID, links, path.cost(),
path.annotations()), intent));
}
/**
* Creates a path intent from the specified path and original
* connectivity intent.
*
* @param path path to create an intent for
* @param intent original intent
*/
private Intent createPathIntent(Path path,
MplsIntent intent) {
return MplsPathIntent.builder()
.appId(intent.appId())
.selector(intent.selector())
.treatment(intent.treatment())
.path(path)
.ingressLabel(intent.ingressLabel())
.egressLabel(intent.egressLabel())
.constraints(intent.constraints())
.priority(intent.priority())
.build();
}
}
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