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/*
* Copyright 2014-2015 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.constraint;
import com.google.common.annotations.Beta;
import com.google.common.base.MoreObjects;
import com.google.common.collect.ImmutableSet;
import org.onosproject.net.DeviceId;
import org.onosproject.net.Link;
import org.onosproject.net.resource.link.LinkResourceService;
import java.util.Collections;
import java.util.Objects;
import java.util.Set;
/**
* Constraint that evaluates elements not passed through.
*/
@Beta
public class ObstacleConstraint extends BooleanConstraint {
private final Set<DeviceId> obstacles;
/**
* Creates a new constraint that the specified device are not passed through.
* @param obstacles devices not to be passed
*/
public ObstacleConstraint(DeviceId... obstacles) {
this.obstacles = ImmutableSet.copyOf(obstacles);
}
// Constructor for serialization
private ObstacleConstraint() {
this.obstacles = Collections.emptySet();
}
/**
* Returns the obstacle device ids.
*
* @return Set of obstacle device ids
*/
public Set<DeviceId> obstacles() {
return obstacles;
}
@Override
public boolean isValid(Link link, LinkResourceService resourceService) {
DeviceId src = link.src().deviceId();
DeviceId dst = link.dst().deviceId();
return !(obstacles.contains(src) || obstacles.contains(dst));
}
@Override
public int hashCode() {
return obstacles.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof ObstacleConstraint)) {
return false;
}
final ObstacleConstraint that = (ObstacleConstraint) obj;
return Objects.equals(this.obstacles, that.obstacles);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("obstacles", obstacles)
.toString();
}
}
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