| /* |
| * 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.net.intent.constraint; |
| |
| import org.onosproject.net.AnnotationKeys; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.intent.ResourceContext; |
| |
| /** |
| * Constraint to request using only {@link AnnotationKeys#PROTECTED protected} |
| * Links. |
| */ |
| public class ProtectedConstraint extends BooleanConstraint { |
| |
| private static final ProtectedConstraint PROTECTED_CONSTRAINT |
| = new ProtectedConstraint(); |
| |
| /** |
| * Returns {@link ProtectedConstraint} instance. |
| * |
| * @return {@link ProtectedConstraint} instance |
| */ |
| public static ProtectedConstraint useProtectedLink() { |
| return PROTECTED_CONSTRAINT; |
| } |
| |
| @Override |
| public boolean isValid(Link link, ResourceContext context) { |
| return link.annotations().keys().contains(AnnotationKeys.PROTECTED); |
| } |
| |
| @Override |
| public String toString() { |
| return "Protected"; |
| } |
| |
| } |