chengfan | 9d60b6e | 2016-12-01 11:06:39 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2016-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.provider.te.tunnel; |
| 18 | |
| 19 | import com.fasterxml.jackson.databind.JsonNode; |
| 20 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 21 | import org.apache.felix.scr.annotations.Activate; |
| 22 | import org.apache.felix.scr.annotations.Component; |
| 23 | import org.apache.felix.scr.annotations.Deactivate; |
| 24 | import org.apache.felix.scr.annotations.Reference; |
| 25 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 26 | import org.onosproject.incubator.net.tunnel.Tunnel; |
| 27 | import org.onosproject.incubator.net.tunnel.TunnelDescription; |
| 28 | import org.onosproject.incubator.net.tunnel.TunnelId; |
| 29 | import org.onosproject.incubator.net.tunnel.TunnelProvider; |
| 30 | import org.onosproject.incubator.net.tunnel.TunnelProviderRegistry; |
| 31 | import org.onosproject.net.DeviceId; |
| 32 | import org.onosproject.net.ElementId; |
| 33 | import org.onosproject.net.Path; |
| 34 | import org.onosproject.net.provider.AbstractProvider; |
| 35 | import org.onosproject.net.provider.ProviderId; |
| 36 | import org.onosproject.protocol.restconf.RestConfNotificationEventListener; |
| 37 | import org.onosproject.protocol.restconf.RestConfSBController; |
| 38 | import org.onosproject.provider.te.utils.YangCompositeEncodingImpl; |
| 39 | import org.onosproject.tetopology.management.api.TeTopology; |
| 40 | import org.onosproject.tetopology.management.api.TeTopologyKey; |
| 41 | import org.onosproject.tetopology.management.api.TeTopologyService; |
| 42 | import org.onosproject.tetunnel.api.TeTunnelProviderService; |
| 43 | import org.onosproject.tetunnel.api.TeTunnelService; |
| 44 | import org.onosproject.tetunnel.api.tunnel.DefaultTeTunnel; |
| 45 | import org.onosproject.tetunnel.api.tunnel.TeTunnel; |
| 46 | import org.onosproject.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.te.rev20160705.IetfTe; |
| 47 | import org.onosproject.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.te.rev20160705.ietfte.tunnelsgrouping.Tunnels; |
| 48 | import org.onosproject.yms.ych.YangCodecHandler; |
| 49 | import org.onosproject.yms.ych.YangCompositeEncoding; |
| 50 | import org.onosproject.yms.ymsm.YmsService; |
| 51 | import org.slf4j.Logger; |
| 52 | import org.slf4j.LoggerFactory; |
| 53 | |
| 54 | import javax.ws.rs.core.MediaType; |
| 55 | import java.io.ByteArrayInputStream; |
| 56 | import java.io.InputStream; |
| 57 | import java.util.List; |
| 58 | import java.util.Optional; |
| 59 | |
| 60 | import static com.google.common.base.Preconditions.checkNotNull; |
| 61 | import static com.google.common.base.Preconditions.checkState; |
| 62 | import static org.onosproject.provider.te.utils.CodecTools.jsonToString; |
| 63 | import static org.onosproject.provider.te.utils.CodecTools.toJson; |
| 64 | import static org.onosproject.tetopology.management.api.TeTopology.BIT_MERGED; |
| 65 | import static org.onosproject.teyang.utils.tunnel.TunnelConverter.buildIetfTe; |
| 66 | import static org.onosproject.teyang.utils.tunnel.TunnelConverter.yang2TeTunnel; |
| 67 | import static org.onosproject.yms.ych.YangProtocolEncodingFormat.JSON; |
| 68 | import static org.onosproject.yms.ych.YangResourceIdentifierType.URI; |
| 69 | import static org.onosproject.yms.ydt.YmsOperationType.EDIT_CONFIG_REQUEST; |
| 70 | import static org.onosproject.yms.ydt.YmsOperationType.QUERY_REPLY; |
| 71 | |
| 72 | |
| 73 | /** |
| 74 | * Provider which uses RESTCONF to do cross-domain tunnel creation/deletion/ |
| 75 | * update/deletion and so on operations on the domain networks. |
| 76 | */ |
| 77 | |
| 78 | @Component(immediate = true) |
| 79 | public class TeTunnelRestconfProvider extends AbstractProvider |
| 80 | implements TunnelProvider { |
| 81 | |
| 82 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 83 | |
| 84 | private static final String SCHEMA = "ietf"; |
| 85 | private static final String IETF = "ietf"; |
| 86 | private static final String TE = "te"; |
| 87 | private static final int DEFAULT_INDEX = 1; |
| 88 | private static final String TUNNELS = "tunnels"; |
| 89 | private static final String TUNNELS_URL = IETF + ":" + TE + "/" + TUNNELS; |
| 90 | private static final String MEDIA_TYPE_JSON = "json"; |
| 91 | |
| 92 | private static final String SHOULD_IN_ONE = "Tunnel should be setup in one topo"; |
| 93 | private static final String PROVIDER_ID = "org.onosproject.provider.ietf"; |
| 94 | private static final String RESTCONF_ROOT = "/onos/restconf"; |
| 95 | |
| 96 | private final RestConfNotificationEventListener listener = |
| 97 | new InternalTunnelNotificationListener(); |
| 98 | |
| 99 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 100 | protected RestConfSBController controller; |
| 101 | |
| 102 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 103 | protected YmsService ymsService; |
| 104 | |
| 105 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 106 | protected TeTunnelService tunnelService; |
| 107 | |
| 108 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 109 | protected TeTunnelProviderService providerService; |
| 110 | |
| 111 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 112 | protected TeTopologyService topologyService; |
| 113 | |
| 114 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 115 | protected TunnelProviderRegistry tunnelProviderRegistry; |
| 116 | |
| 117 | private YangCodecHandler codecHandler; |
| 118 | |
| 119 | @Activate |
| 120 | public void activate() { |
| 121 | tunnelProviderRegistry.register(this); |
| 122 | codecHandler = ymsService.getYangCodecHandler(); |
| 123 | codecHandler.addDeviceSchema(IetfTe.class); |
| 124 | collectInitialTunnels(); |
| 125 | subscribe(); |
| 126 | log.info("Started"); |
| 127 | } |
| 128 | |
| 129 | @Deactivate |
| 130 | public void deactivate() { |
| 131 | tunnelProviderRegistry.unregister(this); |
| 132 | unsubscribe(); |
| 133 | log.info("Stopped"); |
| 134 | |
| 135 | } |
| 136 | |
| 137 | public TeTunnelRestconfProvider() { |
| 138 | super(new ProviderId(SCHEMA, PROVIDER_ID)); |
| 139 | } |
| 140 | |
| 141 | private void collectInitialTunnels() { |
| 142 | for (DeviceId deviceId : controller.getDevices().keySet()) { |
| 143 | ObjectNode jsonNodes = executeGetRequest(deviceId); |
| 144 | if (jsonNodes == null) { |
| 145 | continue; |
| 146 | } |
| 147 | ObjectNode tunnelsNode = (ObjectNode) jsonNodes.get(TUNNELS); |
| 148 | if (tunnelsNode == null) { |
| 149 | continue; |
| 150 | } |
| 151 | Tunnels teTunnels = getYangTunnelsObject(tunnelsNode); |
| 152 | if (teTunnels == null) { |
| 153 | continue; |
| 154 | } |
| 155 | updateTeTunnels(teTunnels); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | private void subscribe() { |
| 160 | for (DeviceId deviceId : controller.getDevices().keySet()) { |
| 161 | try { |
| 162 | controller.enableNotifications(deviceId, TUNNELS_URL, |
| 163 | MEDIA_TYPE_JSON, |
| 164 | listener); |
| 165 | } catch (Exception e) { |
| 166 | log.error("Failed to subscribe for {} : {}", deviceId, |
| 167 | e.getMessage()); |
| 168 | } |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | private void unsubscribe() { |
| 173 | controller.getDevices() |
| 174 | .keySet() |
| 175 | .forEach(deviceId -> controller |
| 176 | .removeNotificationListener(deviceId)); |
| 177 | } |
| 178 | |
| 179 | @Override |
| 180 | public void setupTunnel(Tunnel tunnel, Path path) { |
| 181 | TeTunnel teTunnel = tunnelService.getTeTunnel(tunnel.tunnelId()); |
| 182 | long tid = teTunnel.srcNode().topologyId(); |
| 183 | checkState(tid == teTunnel.dstNode().topologyId(), SHOULD_IN_ONE); |
| 184 | setupTunnel(getOwnDevice(tid), tunnel, path); |
| 185 | } |
| 186 | |
| 187 | @Override |
| 188 | public void setupTunnel(ElementId srcElement, Tunnel tunnel, Path path) { |
| 189 | TeTunnel teTunnel = tunnelService.getTeTunnel(tunnel.tunnelId()); |
| 190 | |
| 191 | IetfTe ietfTe = buildIetfTe(teTunnel); |
| 192 | |
| 193 | YangCompositeEncoding encoding = codecHandler. |
| 194 | encodeCompositeOperation(RESTCONF_ROOT, null, ietfTe, |
| 195 | JSON, EDIT_CONFIG_REQUEST); |
| 196 | String identifier = encoding.getResourceIdentifier(); |
| 197 | String resourceInformation = encoding.getResourceInformation(); |
| 198 | |
| 199 | if (srcElement == null) { |
| 200 | log.error("Can't find remote device for tunnel : {}", tunnel); |
| 201 | return; |
| 202 | } |
| 203 | log.info("Create tunnel get here"); |
| 204 | |
| 205 | controller.post((DeviceId) srcElement, identifier, |
| 206 | new ByteArrayInputStream(resourceInformation.getBytes()), |
| 207 | MediaType.APPLICATION_JSON, ObjectNode.class); |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public void releaseTunnel(Tunnel tunnel) { |
| 212 | //TODO implement release tunnel method |
| 213 | } |
| 214 | |
| 215 | @Override |
| 216 | public void releaseTunnel(ElementId srcElement, Tunnel tunnel) { |
| 217 | //TODO implement release tunnel with src method |
| 218 | } |
| 219 | |
| 220 | @Override |
| 221 | public void updateTunnel(Tunnel tunnel, Path path) { |
| 222 | //TODO implement update tunnel method |
| 223 | |
| 224 | } |
| 225 | |
| 226 | @Override |
| 227 | public void updateTunnel(ElementId srcElement, Tunnel tunnel, Path path) { |
| 228 | //TODO implement update tunnel with src method |
| 229 | } |
| 230 | |
| 231 | @Override |
| 232 | public TunnelId tunnelAdded(TunnelDescription tunnel) { |
| 233 | //TODO implement tunnel add method when te tunnel app merged to core |
| 234 | return null; |
| 235 | } |
| 236 | |
| 237 | @Override |
| 238 | public void tunnelRemoved(TunnelDescription tunnel) { |
| 239 | //TODO implement tunnel remove method when te tunnel app merged to core |
| 240 | |
| 241 | } |
| 242 | |
| 243 | @Override |
| 244 | public void tunnelUpdated(TunnelDescription tunnel) { |
| 245 | //TODO implement tunnel update method when te tunnel app merged to core |
| 246 | } |
| 247 | |
| 248 | @Override |
| 249 | public Tunnel tunnelQueryById(TunnelId tunnelId) { |
| 250 | return null; |
| 251 | } |
| 252 | |
| 253 | private ObjectNode executeGetRequest(DeviceId deviceId) { |
| 254 | //the request url is ietf-te:te/tunnels |
| 255 | //the response node will begin with tunnels |
| 256 | //be careful here to when get the tunnels data |
| 257 | InputStream resultStream = |
| 258 | controller.get(deviceId, TUNNELS_URL, MEDIA_TYPE_JSON); |
| 259 | return toJson(resultStream); |
| 260 | } |
| 261 | |
| 262 | private Tunnels getYangTunnelsObject(ObjectNode tunnelsNode) { |
| 263 | checkNotNull(tunnelsNode, "Input object node should not be null"); |
| 264 | |
| 265 | YangCompositeEncoding yce = |
| 266 | new YangCompositeEncodingImpl(URI, |
| 267 | TUNNELS_URL, |
| 268 | jsonToString(tunnelsNode)); |
| 269 | |
| 270 | Object yo = codecHandler.decode(yce, JSON, QUERY_REPLY); |
| 271 | |
| 272 | if (yo == null) { |
| 273 | log.error("YMS decoder returns null"); |
| 274 | return null; |
| 275 | } |
| 276 | IetfTe ietfTe = null; |
| 277 | Tunnels tunnels = null; |
| 278 | if (yo instanceof List) { |
| 279 | List<Object> list = (List<Object>) yo; |
| 280 | ietfTe = (IetfTe) list.get(DEFAULT_INDEX); |
| 281 | } |
| 282 | if (ietfTe != null && ietfTe.te() != null) { |
| 283 | tunnels = ietfTe.te().tunnels(); |
| 284 | } |
| 285 | return tunnels; |
| 286 | } |
| 287 | |
| 288 | private void updateTeTunnels(Tunnels tunnels) { |
| 289 | TeTopologyKey key = getTopologyKey(); |
| 290 | |
| 291 | tunnels.tunnel().forEach(tunnel -> { |
| 292 | DefaultTeTunnel teTunnel = yang2TeTunnel(tunnel, key); |
| 293 | providerService.updateTeTunnel(teTunnel); |
| 294 | }); |
| 295 | } |
| 296 | |
| 297 | private TeTopologyKey getTopologyKey() { |
| 298 | TeTopologyKey key = null; |
| 299 | Optional<TeTopology> teTopology = topologyService.teTopologies() |
| 300 | .teTopologies() |
| 301 | .values() |
| 302 | .stream() |
| 303 | .filter(topology -> topology.flags().get(BIT_MERGED)) |
| 304 | .findFirst(); |
| 305 | if (teTopology.isPresent()) { |
| 306 | TeTopology topology = teTopology.get(); |
| 307 | key = topology.teTopologyId(); |
| 308 | } |
| 309 | return key; |
| 310 | } |
| 311 | |
| 312 | private DeviceId getOwnDevice(long topologyId) { |
| 313 | DeviceId deviceId = null; |
| 314 | Optional<TeTopology> topoOpt = topologyService.teTopologies() |
| 315 | .teTopologies() |
| 316 | .values() |
| 317 | .stream() |
| 318 | .filter(tp -> tp.teTopologyId().topologyId() == topologyId) |
| 319 | .findFirst(); |
| 320 | |
| 321 | if (topoOpt.isPresent()) { |
| 322 | deviceId = topoOpt.get().ownerId(); |
| 323 | } |
| 324 | return deviceId; |
| 325 | } |
| 326 | |
| 327 | private class InternalTunnelNotificationListener implements |
| 328 | RestConfNotificationEventListener { |
| 329 | |
| 330 | @Override |
| 331 | public void handleNotificationEvent(DeviceId deviceId, Object eventJsonString) { |
| 332 | ObjectNode response = toJson((String) eventJsonString); |
| 333 | if (response == null) { |
| 334 | return; |
| 335 | } |
| 336 | JsonNode teNode = response.get(TE); |
| 337 | if (teNode == null) { |
| 338 | log.error("Illegal te json object from {}", deviceId); |
| 339 | return; |
| 340 | } |
| 341 | JsonNode tunnelsNode = teNode.get(TUNNELS); |
| 342 | if (tunnelsNode == null) { |
| 343 | log.error("Illegal tunnel json object from {}", deviceId); |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | Tunnels tunnels = getYangTunnelsObject((ObjectNode) tunnelsNode); |
| 348 | if (tunnels == null) { |
| 349 | return; |
| 350 | } |
| 351 | updateTeTunnels(tunnels); |
| 352 | } |
| 353 | } |
| 354 | } |