Simon Hunt | 4e94293 | 2017-03-06 19:09:25 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present 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 | |
| 17 | package org.onosproject.cordsupport; |
| 18 | |
| 19 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 20 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 21 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 22 | import org.onosproject.net.Device; |
| 23 | import org.onosproject.net.Host; |
| 24 | import org.onosproject.net.Link; |
| 25 | import org.onosproject.net.device.DeviceService; |
| 26 | import org.onosproject.net.host.HostService; |
| 27 | import org.onosproject.net.link.LinkService; |
| 28 | import org.onosproject.rest.AbstractWebResource; |
| 29 | |
| 30 | import javax.ws.rs.GET; |
| 31 | import javax.ws.rs.Path; |
| 32 | import javax.ws.rs.core.Response; |
| 33 | import java.util.HashSet; |
| 34 | import java.util.Set; |
| 35 | |
| 36 | import static javax.ws.rs.core.MediaType.APPLICATION_JSON_TYPE; |
| 37 | |
| 38 | /** |
| 39 | * CORD support REST implementation. |
| 40 | */ |
| 41 | @Path("topo") |
| 42 | public class CordSupportWebResource extends AbstractWebResource { |
| 43 | |
| 44 | private static final String TILDE = "~"; |
| 45 | |
| 46 | private final ObjectMapper mapper = new ObjectMapper(); |
| 47 | private final Set<String> seenLinks = new HashSet<>(); |
| 48 | |
| 49 | @GET |
| 50 | public Response queryTopology() { |
| 51 | ObjectNode root = mapper.createObjectNode(); |
| 52 | |
| 53 | addDevices(root); |
| 54 | addHosts(root); |
| 55 | addLinks(root); |
| 56 | |
| 57 | return Response.ok(root.toString(), APPLICATION_JSON_TYPE).build(); |
| 58 | } |
| 59 | |
| 60 | private void addDevices(ObjectNode root) { |
| 61 | ArrayNode devices = createArray(root, "devices"); |
| 62 | get(DeviceService.class).getDevices() |
| 63 | .forEach(dev -> devices.add(json(dev))); |
| 64 | } |
| 65 | |
| 66 | private void addHosts(ObjectNode root) { |
| 67 | ArrayNode hosts = createArray(root, "hosts"); |
| 68 | get(HostService.class).getHosts() |
| 69 | .forEach(host -> hosts.add(json(host))); |
| 70 | } |
| 71 | |
| 72 | private void addLinks(ObjectNode root) { |
| 73 | ArrayNode links = createArray(root, "links"); |
| 74 | seenLinks.clear(); |
| 75 | get(LinkService.class).getLinks() |
| 76 | .forEach(link -> { |
| 77 | String canon = canonicalRep(link); |
| 78 | if (!seenLinks.contains(canon)) { |
| 79 | seenLinks.add(canon); |
| 80 | links.add(json(link)); |
| 81 | } |
| 82 | }); |
| 83 | } |
| 84 | |
| 85 | private String canonicalRep(Link link) { |
| 86 | String a = link.src().toString(); |
| 87 | String b = link.dst().toString(); |
| 88 | return a.compareTo(b) < 0 ? a + TILDE + b : b + TILDE + a; |
| 89 | } |
| 90 | |
| 91 | private ArrayNode createArray(ObjectNode root, String key) { |
| 92 | ArrayNode result = mapper.createArrayNode(); |
| 93 | root.set(key, result); |
| 94 | return result; |
| 95 | } |
| 96 | |
| 97 | private ObjectNode json(Device device) { |
| 98 | return mapper.createObjectNode() |
| 99 | .put("id", device.id().toString()) |
| 100 | .put("type", device.type().toString()); |
| 101 | } |
| 102 | |
| 103 | private ObjectNode json(Host host) { |
| 104 | return mapper.createObjectNode() |
| 105 | .put("id", host.id().toString()) |
| 106 | .put("location", host.location().toString()); |
| 107 | } |
| 108 | |
| 109 | private ObjectNode json(Link link) { |
| 110 | return mapper.createObjectNode() |
| 111 | .put("canon", canonicalRep(link)) |
| 112 | .put("src", link.src().toString()) |
| 113 | .put("dst", link.dst().toString()); |
| 114 | } |
| 115 | |
| 116 | } |