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/*
* Copyright 2014 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 org.onosproject.net.Link;
import org.onosproject.net.resource.link.LambdaResource;
import org.onosproject.net.resource.link.LinkResourceService;
import org.onosproject.net.resource.ResourceRequest;
import org.onosproject.net.resource.ResourceType;
import java.util.Objects;
import static com.google.common.base.MoreObjects.toStringHelper;
/**
* Constraint that evaluates links based on available lambda.
*/
@Beta
public class LambdaConstraint extends BooleanConstraint {
private final LambdaResource lambda;
/**
* Creates a new optical lambda constraint.
*
* @param lambda optional lambda to indicate a specific lambda
*/
public LambdaConstraint(LambdaResource lambda) {
this.lambda = lambda;
}
// Constructor for serialization
private LambdaConstraint() {
this.lambda = null;
}
@Override
public boolean isValid(Link link, LinkResourceService resourceService) {
for (ResourceRequest request : resourceService.getAvailableResources(link)) {
if (request.type() == ResourceType.LAMBDA) {
return true;
}
}
return false;
}
/**
* Returns the lambda required by this constraint.
*
* @return required lambda
*/
public LambdaResource lambda() {
return lambda;
}
@Override
public int hashCode() {
return Objects.hashCode(lambda);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
final LambdaConstraint other = (LambdaConstraint) obj;
return Objects.equals(this.lambda, other.lambda);
}
@Override
public String toString() {
return toStringHelper(this).add("lambda", lambda).toString();
}
}
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