core/api/src/main/java/org/onlab/onos/net/intent/PathIntent.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.onlab.onos.net.intent;

import com.google.common.base.MoreObjects;
import org.onlab.onos.core.ApplicationId;
import org.onlab.onos.net.Path;
import org.onlab.onos.net.flow.TrafficSelector;
import org.onlab.onos.net.flow.TrafficTreatment;

/**
 * Abstraction of explicitly path specified connectivity intent.
 */
public class PathIntent extends ConnectivityIntent {

    private final Path path;

    /**
     * Creates a new point-to-point intent with the supplied ingress/egress
     * ports and using the specified explicit path.
     *
     * @param appId     application identifier
     * @param selector  traffic selector
     * @param treatment treatment
     * @param path      traversed links
     * @throws NullPointerException {@code path} is null
     */
    public PathIntent(ApplicationId appId, TrafficSelector selector,
                      TrafficTreatment treatment, Path path) {
        super(id(PathIntent.class, selector, treatment, path), appId,
              resources(path.links()), selector, treatment);
        this.path = path;
    }

    /**
     * Constructor for serializer.
     */
    protected PathIntent() {
        super();
        this.path = null;
    }

    /**
     * Returns the links which the traffic goes along.
     *
     * @return traversed links
     */
    public Path path() {
        return path;
    }

    @Override
    public boolean isInstallable() {
        return true;
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(getClass())
                .add("id", id())
                .add("appId", appId())
                .add("selector", selector())
                .add("treatment", treatment())
                .add("path", path)
                .toString();
    }

}