| /* |
| * Copyright 2020-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.t3.api; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Link; |
| |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Represents Network Information Base (NIB) for links |
| * and supports alternative functions to |
| * {@link org.onosproject.net.link.LinkService} for offline data. |
| */ |
| public class LinkNib extends AbstractNib { |
| |
| // TODO with method optimization, store into subdivided structures at the first load |
| private Set<Link> links; |
| |
| // use the singleton helper to create the instance |
| protected LinkNib() { |
| } |
| |
| /** |
| * Sets a set of links. |
| * |
| * @param links link set |
| */ |
| public void setLinks(Set<Link> links) { |
| this.links = links; |
| } |
| |
| /** |
| * Returns the set of links. |
| * |
| * @return link set |
| */ |
| public Set<Link> getLinks() { |
| return ImmutableSet.copyOf(links); |
| } |
| |
| /** |
| * Returns set of all infrastructure links leading from the specified |
| * connection point. |
| * |
| * @param connectPoint connection point |
| * @return set of device egress links |
| */ |
| public Set<Link> getEgressLinks(ConnectPoint connectPoint) { |
| Set<Link> egressLinks = links.stream() |
| .filter(link -> connectPoint.equals(link.src())) |
| .collect(Collectors.toSet()); |
| return egressLinks != null ? ImmutableSet.copyOf(egressLinks) : ImmutableSet.of(); |
| } |
| |
| /** |
| * Returns the singleton instance of links NIB. |
| * |
| * @return instance of links NIB |
| */ |
| public static LinkNib getInstance() { |
| return LinkNib.SingletonHelper.INSTANCE; |
| } |
| |
| private static class SingletonHelper { |
| private static final LinkNib INSTANCE = new LinkNib(); |
| } |
| |
| } |