| /* |
| * Copyright 2014-present Open Networking Foundation |
| * |
| * 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; |
| |
| import com.google.common.annotations.Beta; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.Path; |
| |
| /** |
| * Representation of a connectivity constraint capable of evaluating a link |
| * and determining the cost of traversing that link in the context of this |
| * constraint. |
| */ |
| @Beta |
| public interface Constraint { |
| |
| // TODO: Consider separating cost vs viability. |
| |
| /** |
| * Evaluates the specified link and provides the cost for its traversal. |
| * |
| * @param link link to be evaluated |
| * @param context resource context for validating availability of resources |
| * @return cost of link traversal |
| */ |
| double cost(Link link, ResourceContext context); |
| |
| /** |
| * Validates that the specified path satisfies the constraint. |
| * |
| * @param path path to be validated |
| * @param context resource context for validating availability of resources |
| * @return cost of link traversal |
| */ |
| boolean validate(Path path, ResourceContext context); |
| |
| } |