Sho SHIMIZU | 47e7b80 | 2015-08-18 08:54:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.net.newresource.impl; |
| 17 | |
| 18 | import org.onosproject.net.Link; |
| 19 | import org.onosproject.net.LinkKey; |
| 20 | import org.onosproject.net.link.LinkEvent; |
| 21 | import org.onosproject.net.link.LinkListener; |
| 22 | import org.onosproject.net.newresource.ResourceAdminService; |
| 23 | import org.onosproject.net.newresource.ResourcePath; |
| 24 | |
| 25 | import java.util.concurrent.ExecutorService; |
| 26 | |
| 27 | import static com.google.common.base.Preconditions.checkNotNull; |
| 28 | |
| 29 | /** |
| 30 | * An implementation of LinkListener registering links as resources. |
| 31 | */ |
| 32 | final class ResourceLinkListener implements LinkListener { |
| 33 | |
| 34 | private final ResourceAdminService adminService; |
| 35 | private final ExecutorService executor; |
| 36 | |
| 37 | /** |
| 38 | * Creates an instance with the specified ResourceAdminService and ExecutorService. |
| 39 | * |
| 40 | * @param adminService instance invoked to register resources |
| 41 | * @param executor executor used for processing resource registration |
| 42 | */ |
| 43 | ResourceLinkListener(ResourceAdminService adminService, ExecutorService executor) { |
| 44 | this.adminService = checkNotNull(adminService); |
| 45 | this.executor = checkNotNull(executor); |
| 46 | } |
| 47 | |
| 48 | @Override |
| 49 | public void event(LinkEvent event) { |
| 50 | Link link = event.subject(); |
| 51 | switch (event.type()) { |
| 52 | case LINK_ADDED: |
| 53 | registerLinkResource(link); |
| 54 | break; |
Sho SHIMIZU | d28842c | 2015-08-20 11:42:43 -0700 | [diff] [blame^] | 55 | case LINK_REMOVED: |
| 56 | unregisterLinkResource(link); |
| 57 | break; |
Sho SHIMIZU | 47e7b80 | 2015-08-18 08:54:30 -0700 | [diff] [blame] | 58 | default: |
| 59 | break; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | private void registerLinkResource(Link link) { |
| 64 | LinkKey linkKey = LinkKey.linkKey(link); |
| 65 | executor.submit(() -> adminService.registerResources(ResourcePath.ROOT, linkKey)); |
| 66 | } |
Sho SHIMIZU | d28842c | 2015-08-20 11:42:43 -0700 | [diff] [blame^] | 67 | |
| 68 | private void unregisterLinkResource(Link link) { |
| 69 | LinkKey linkKey = LinkKey.linkKey(link); |
| 70 | executor.submit(() -> adminService.unregisterResources(ResourcePath.ROOT, linkKey)); |
| 71 | } |
Sho SHIMIZU | 47e7b80 | 2015-08-18 08:54:30 -0700 | [diff] [blame] | 72 | } |