Thomas Vachuska | 598924e | 2014-10-23 22:26:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.onlab.onos.gui; |
| 20 | |
| 21 | import com.fasterxml.jackson.databind.ObjectMapper; |
| 22 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 23 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 24 | import org.onlab.onos.net.ConnectPoint; |
| 25 | import org.onlab.onos.net.Device; |
| 26 | import org.onlab.onos.net.Host; |
| 27 | import org.onlab.onos.net.HostLocation; |
| 28 | import org.onlab.onos.net.Link; |
| 29 | import org.onlab.onos.net.device.DeviceService; |
| 30 | import org.onlab.onos.net.host.HostService; |
| 31 | import org.onlab.onos.net.link.LinkService; |
| 32 | import org.onlab.onos.net.topology.Topology; |
| 33 | import org.onlab.onos.net.topology.TopologyGraph; |
| 34 | import org.onlab.onos.net.topology.TopologyService; |
| 35 | import org.onlab.onos.net.topology.TopologyVertex; |
Pavlin Radoslavov | 33f228a | 2014-10-27 19:33:16 -0700 | [diff] [blame] | 36 | import org.onlab.packet.IpAddress; |
Thomas Vachuska | 598924e | 2014-10-23 22:26:07 -0700 | [diff] [blame] | 37 | import org.onlab.packet.MacAddress; |
| 38 | import org.onlab.rest.BaseResource; |
| 39 | |
| 40 | import javax.ws.rs.GET; |
| 41 | import javax.ws.rs.Produces; |
| 42 | import javax.ws.rs.core.Response; |
| 43 | import java.util.HashMap; |
| 44 | import java.util.HashSet; |
| 45 | import java.util.Iterator; |
| 46 | import java.util.Map; |
| 47 | import java.util.Set; |
| 48 | |
| 49 | /** |
| 50 | * Topology viewer resource. |
| 51 | */ |
| 52 | @javax.ws.rs.Path("topology") |
| 53 | public class TopologyResource extends BaseResource { |
| 54 | |
| 55 | @javax.ws.rs.Path("/graph") |
| 56 | @GET |
| 57 | @Produces("application/json") |
| 58 | public Response graph() { |
| 59 | // Fetch the services we'll be using. |
| 60 | DeviceService deviceService = get(DeviceService.class); |
| 61 | HostService hostService = get(HostService.class); |
| 62 | TopologyService topologyService = get(TopologyService.class); |
| 63 | |
| 64 | // Fetch the current topology and its graph that we'll use to render. |
| 65 | Topology topo = topologyService.currentTopology(); |
| 66 | TopologyGraph graph = topologyService.getGraph(topo); |
| 67 | |
| 68 | ObjectMapper mapper = new ObjectMapper(); |
| 69 | ObjectNode rootNode = mapper.createObjectNode(); |
| 70 | rootNode.set("devices", getDevices(mapper, deviceService, graph)); |
| 71 | rootNode.set("links", getLinks(mapper, topo, graph)); |
| 72 | rootNode.set("hosts", getHosts(mapper, hostService)); |
| 73 | return Response.ok(rootNode.toString()).build(); |
| 74 | } |
| 75 | |
| 76 | // Encodes all infrastructure devices. |
| 77 | private ArrayNode getDevices(ObjectMapper mapper, DeviceService deviceService, |
| 78 | TopologyGraph graph) { |
| 79 | ArrayNode devices = mapper.createArrayNode(); |
| 80 | for (TopologyVertex vertex : graph.getVertexes()) { |
| 81 | devices.add(json(mapper, deviceService.getDevice(vertex.deviceId()), |
| 82 | deviceService.isAvailable(vertex.deviceId()))); |
| 83 | } |
| 84 | return devices; |
| 85 | } |
| 86 | |
| 87 | // Encodes all infrastructure links. |
| 88 | private ArrayNode getLinks(ObjectMapper mapper, Topology topo, TopologyGraph graph) { |
| 89 | // Now scan all links and count number of them between the same devices |
| 90 | // using a normalized link key. |
| 91 | Map<String, AggLink> linkRecords = aggregateLinks(); |
| 92 | |
| 93 | // Now build all interior edges using the aggregated links. |
| 94 | ArrayNode links = mapper.createArrayNode(); |
| 95 | for (AggLink lr : linkRecords.values()) { |
| 96 | links.add(json(mapper, lr)); |
| 97 | } |
| 98 | return links; |
| 99 | } |
| 100 | |
| 101 | // Encodes all end-station hosts. |
| 102 | private ArrayNode getHosts(ObjectMapper mapper, HostService hostService) { |
| 103 | ArrayNode hosts = mapper.createArrayNode(); |
| 104 | for (Host host : hostService.getHosts()) { |
Pavlin Radoslavov | 33f228a | 2014-10-27 19:33:16 -0700 | [diff] [blame] | 105 | Set<IpAddress> ipAddresses = host.ipAddresses(); |
| 106 | IpAddress ipAddress = ipAddresses.isEmpty() ? null : ipAddresses.iterator().next(); |
Thomas Vachuska | 598924e | 2014-10-23 22:26:07 -0700 | [diff] [blame] | 107 | String label = ipAddress != null ? ipAddress.toString() : host.mac().toString(); |
| 108 | hosts.add(json(mapper, host)); |
| 109 | } |
| 110 | return hosts; |
| 111 | } |
| 112 | |
| 113 | // Scan all links and counts number of them between the same devices |
| 114 | // using a normalized link key. |
| 115 | private Map<String, AggLink> aggregateLinks() { |
| 116 | Map<String, AggLink> aggLinks = new HashMap<>(); |
| 117 | LinkService linkService = get(LinkService.class); |
| 118 | for (Link link : linkService.getLinks()) { |
| 119 | String key = key(link); |
| 120 | AggLink lr = aggLinks.get(key); |
| 121 | if (lr == null) { |
| 122 | lr = new AggLink(key); |
| 123 | aggLinks.put(key, lr); |
| 124 | } |
| 125 | lr.addLink(link); |
| 126 | } |
| 127 | return aggLinks; |
| 128 | } |
| 129 | |
| 130 | // Produces JSON for a device. |
| 131 | private ObjectNode json(ObjectMapper mapper, Device device, boolean isOnline) { |
| 132 | ObjectNode node = mapper.createObjectNode() |
| 133 | .put("id", device.id().toString()) |
| 134 | .put("type", device.type().toString().toLowerCase()) |
| 135 | .put("online", isOnline); |
| 136 | node.set("labels", labels(mapper, |
| 137 | device.id().uri().getSchemeSpecificPart(), |
| 138 | MacAddress.valueOf(device.chassisId().value()).toString(), |
| 139 | device.serialNumber())); |
| 140 | return node; |
| 141 | } |
| 142 | |
| 143 | // Produces JSON for a link. |
| 144 | private ObjectNode json(ObjectMapper mapper, AggLink aggLink) { |
| 145 | Link link = aggLink.link; |
| 146 | return mapper.createObjectNode() |
| 147 | .put("src", link.src().deviceId().toString()) |
| 148 | .put("dst", link.dst().deviceId().toString()) |
| 149 | .put("type", link.type().toString().toLowerCase()) |
| 150 | .put("linkWidth", aggLink.links.size()); |
| 151 | } |
| 152 | |
| 153 | // Produces JSON for a device. |
| 154 | private ObjectNode json(ObjectMapper mapper, Host host) { |
| 155 | ObjectNode json = mapper.createObjectNode() |
| 156 | .put("id", host.id().toString()); |
| 157 | json.set("cp", location(mapper, host.location())); |
| 158 | json.set("labels", labels(mapper, ip(host.ipAddresses()), |
| 159 | host.mac().toString())); |
| 160 | return json; |
| 161 | } |
| 162 | |
Pavlin Radoslavov | 33f228a | 2014-10-27 19:33:16 -0700 | [diff] [blame] | 163 | private String ip(Set<IpAddress> ipAddresses) { |
| 164 | Iterator<IpAddress> it = ipAddresses.iterator(); |
Thomas Vachuska | 598924e | 2014-10-23 22:26:07 -0700 | [diff] [blame] | 165 | return it.hasNext() ? it.next().toString() : "unknown"; |
| 166 | } |
| 167 | |
| 168 | private ObjectNode location(ObjectMapper mapper, HostLocation location) { |
| 169 | return mapper.createObjectNode() |
| 170 | .put("device", location.deviceId().toString()) |
| 171 | .put("port", location.port().toLong()); |
| 172 | } |
| 173 | |
| 174 | private ArrayNode labels(ObjectMapper mapper, String... labels) { |
| 175 | ArrayNode json = mapper.createArrayNode(); |
| 176 | for (String label : labels) { |
| 177 | json.add(label); |
| 178 | } |
| 179 | return json; |
| 180 | } |
| 181 | |
| 182 | // Aggregate link of all links between the same devices regardless of |
| 183 | // their direction. |
| 184 | private class AggLink { |
| 185 | Link link; // representative links |
| 186 | |
| 187 | final String key; |
| 188 | final Set<Link> links = new HashSet<>(); |
| 189 | |
| 190 | AggLink(String key) { |
| 191 | this.key = key; |
| 192 | } |
| 193 | |
| 194 | void addLink(Link link) { |
| 195 | links.add(link); |
| 196 | if (this.link == null) { |
| 197 | this.link = link; |
| 198 | } |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | // Returns a canonical key for the specified link. |
| 203 | static String key(Link link) { |
| 204 | String s = id(link.src()); |
| 205 | String d = id(link.dst()); |
| 206 | return s.compareTo(d) > 0 ? d + s : s + d; |
| 207 | } |
| 208 | |
| 209 | // Returns a formatted string for the element associated with the given |
| 210 | // connection point. |
| 211 | private static String id(ConnectPoint cp) { |
| 212 | return cp.elementId().toString(); |
| 213 | } |
| 214 | |
| 215 | } |