DongRyeol Cha | 06041fa | 2018-06-07 10:23:32 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 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.drivers.arista; |
| 17 | |
| 18 | |
| 19 | import com.fasterxml.jackson.databind.JsonNode; |
| 20 | import com.google.common.base.Supplier; |
| 21 | import com.google.common.collect.Sets; |
| 22 | import org.onlab.packet.MacAddress; |
| 23 | import org.onlab.util.Tools; |
| 24 | import org.onosproject.net.AnnotationKeys; |
| 25 | import org.onosproject.net.ConnectPoint; |
| 26 | import org.onosproject.net.DefaultAnnotations; |
| 27 | import org.onosproject.net.DefaultPort; |
| 28 | import org.onosproject.net.Device; |
| 29 | import org.onosproject.net.DeviceId; |
| 30 | import org.onosproject.net.Link; |
| 31 | import org.onosproject.net.Port; |
| 32 | import org.onosproject.net.PortNumber; |
| 33 | import org.onosproject.net.behaviour.LinkDiscovery; |
| 34 | import org.onosproject.net.device.DeviceService; |
| 35 | import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| 36 | import org.onosproject.net.driver.DriverHandler; |
| 37 | import org.onosproject.net.link.DefaultLinkDescription; |
| 38 | import org.onosproject.net.link.LinkDescription; |
| 39 | import org.slf4j.Logger; |
| 40 | |
| 41 | import java.util.Iterator; |
| 42 | import java.util.List; |
| 43 | import java.util.Map; |
| 44 | import java.util.Objects; |
| 45 | import java.util.Optional; |
| 46 | import java.util.Set; |
| 47 | import java.util.stream.Stream; |
| 48 | import java.util.stream.StreamSupport; |
| 49 | |
| 50 | import static com.google.common.base.Preconditions.checkNotNull; |
| 51 | import static org.slf4j.LoggerFactory.getLogger; |
| 52 | |
| 53 | public class LinkDiscoveryAristaImpl extends AbstractHandlerBehaviour implements LinkDiscovery { |
| 54 | |
| 55 | private static final String SHOW_LLDP_NEIGHBOR_DETAIL_CMD = "show lldp neighbors detail"; |
| 56 | private static final String LLDP_NEIGHBORS = "lldpNeighbors"; |
| 57 | private static final String LLDP_NEIGHBOR_INFO = "lldpNeighborInfo"; |
| 58 | private static final String CHASSIS_ID = "chassisId"; |
| 59 | private static final String PORT_ID = "interfaceDescription"; |
| 60 | private static final String CHASSIS_ID_TYPE = "chassisIdType"; |
| 61 | private static final String CHASSIS_ID_TYPE_MAC = "macAddress"; |
| 62 | |
| 63 | private final Logger log = getLogger(getClass()); |
| 64 | |
| 65 | @Override |
| 66 | public Set<LinkDescription> getLinks() { |
| 67 | return createLinksDescs(AristaUtils.retrieveCommandResult(handler(), SHOW_LLDP_NEIGHBOR_DETAIL_CMD)); |
| 68 | } |
| 69 | |
| 70 | private Set<LinkDescription> createLinksDescs(Optional<JsonNode> response) { |
| 71 | DriverHandler handler = checkNotNull(handler()); |
| 72 | DeviceId localDeviceId = checkNotNull(handler.data().deviceId()); |
| 73 | DeviceService deviceService = handler.get(DeviceService.class); |
| 74 | Set<LinkDescription> linkDescriptions = Sets.newHashSet(); |
| 75 | List<Port> ports = deviceService.getPorts(localDeviceId); |
| 76 | |
| 77 | if (ports.isEmpty() || Objects.isNull(response)) { |
| 78 | return linkDescriptions; |
| 79 | } |
| 80 | |
| 81 | if (!response.isPresent()) { |
| 82 | return linkDescriptions; |
| 83 | } |
| 84 | |
| 85 | log.debug("response: {}, {}", response, localDeviceId.toString()); |
| 86 | |
| 87 | JsonNode res = response.get(); |
| 88 | |
| 89 | if (res == null) { |
| 90 | log.warn("result is null"); |
| 91 | return linkDescriptions; |
| 92 | } |
| 93 | |
| 94 | JsonNode lldpNeighbors = res.findValue(LLDP_NEIGHBORS); |
| 95 | |
| 96 | if (lldpNeighbors == null) { |
| 97 | log.warn("{} is null", LLDP_NEIGHBORS); |
| 98 | return linkDescriptions; |
| 99 | } |
| 100 | |
| 101 | Iterator<Map.Entry<String, JsonNode>> lldpNeighborsIter = lldpNeighbors.fields(); |
| 102 | |
| 103 | while (lldpNeighborsIter.hasNext()) { |
| 104 | Map.Entry<String, JsonNode> neighbor = lldpNeighborsIter.next(); |
| 105 | String lldpLocalPort = neighbor.getKey(); |
| 106 | JsonNode neighborValue = neighbor.getValue(); |
| 107 | |
| 108 | log.debug("lldpLocalPort: {}", lldpLocalPort); |
| 109 | log.debug("neighborValue: {}", neighborValue.toString()); |
| 110 | |
| 111 | if (lldpLocalPort.isEmpty()) { |
| 112 | continue; |
| 113 | } |
| 114 | |
| 115 | JsonNode neighborInfo = neighborValue.findValue(LLDP_NEIGHBOR_INFO); |
| 116 | |
| 117 | if (neighborInfo == null) { |
| 118 | log.warn("{} is null", LLDP_NEIGHBOR_INFO); |
| 119 | continue; |
| 120 | } |
| 121 | |
| 122 | Iterator<JsonNode> neighborInfoIter = neighborInfo.elements(); |
| 123 | |
| 124 | while (neighborInfoIter.hasNext()) { |
| 125 | JsonNode info = neighborInfoIter.next(); |
| 126 | String chassisIdType = info.get(CHASSIS_ID_TYPE).asText(""); |
| 127 | |
| 128 | if (chassisIdType == null) { |
| 129 | log.warn("{} is null", CHASSIS_ID_TYPE); |
| 130 | continue; |
| 131 | } |
| 132 | |
| 133 | if (!chassisIdType.equals(CHASSIS_ID_TYPE_MAC)) { |
| 134 | log.warn("{} is not mac: {}", CHASSIS_ID_TYPE_MAC, chassisIdType); |
| 135 | continue; |
| 136 | } |
| 137 | |
| 138 | JsonNode remotePortNameNode = info.findValue(PORT_ID); |
| 139 | |
| 140 | if (remotePortNameNode == null) { |
| 141 | continue; |
| 142 | } |
| 143 | |
| 144 | String remoteChassisId = info.get(CHASSIS_ID).asText(""); |
| 145 | String remotePortName = remotePortNameNode.asText(""); |
| 146 | |
| 147 | log.debug("{}: {}, {}: {}", CHASSIS_ID, remoteChassisId, PORT_ID, remotePortName); |
| 148 | |
| 149 | Optional<Port> localPort = findLocalPortByName(ports, lldpLocalPort); |
| 150 | |
| 151 | if (!localPort.isPresent()) { |
| 152 | log.warn("local port not found. lldpLocalPort value: {}", lldpLocalPort); |
| 153 | continue; |
| 154 | } |
| 155 | |
| 156 | Optional<Device> remoteDevice = findRemoteDeviceByChassisId(deviceService, remoteChassisId); |
| 157 | |
| 158 | if (!remoteDevice.isPresent()) { |
| 159 | log.warn("remote device not found. remoteChassisId value: {}", remoteChassisId); |
| 160 | continue; |
| 161 | } |
| 162 | |
| 163 | Optional<Port> remotePort = findDestinationPortByName( |
| 164 | remotePortName, |
| 165 | deviceService, |
| 166 | remoteDevice.get()); |
| 167 | |
| 168 | if (!remotePort.isPresent()) { |
| 169 | log.warn("remote port not found. remotePortName value: {}", remotePortName); |
| 170 | continue; |
| 171 | } |
| 172 | |
DongRyeol Cha | 81935a6 | 2018-11-30 16:51:21 +0900 | [diff] [blame^] | 173 | if (!localPort.get().isEnabled() || !remotePort.get().isEnabled()) { |
| 174 | log.debug("Ports are disabled. Cannot create a link between {}/{} and {}/{}", |
| 175 | localDeviceId, localPort.get(), remoteDevice.get().id(), remotePort.get()); |
| 176 | continue; |
| 177 | } |
| 178 | |
DongRyeol Cha | 06041fa | 2018-06-07 10:23:32 +0900 | [diff] [blame] | 179 | linkDescriptions |
| 180 | .addAll(buildLinkPair(localDeviceId, localPort.get(), |
| 181 | remoteDevice.get().id(), remotePort.get())); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | log.debug("returning linkDescriptions: {}", linkDescriptions); |
| 186 | |
| 187 | return linkDescriptions; |
| 188 | } |
| 189 | |
| 190 | private Optional<Port> findLocalPortByName(List<Port> ports, String lldpLocalPort) { |
| 191 | Optional<Port> localPort = ports.stream() |
| 192 | .filter(port -> lldpLocalPort.equalsIgnoreCase(port.annotations().value(AnnotationKeys.PORT_NAME))) |
| 193 | .findAny(); |
| 194 | |
| 195 | if (!localPort.isPresent()) { |
| 196 | localPort = ports.stream() |
| 197 | .filter(port -> lldpLocalPort.equalsIgnoreCase(port.annotations().value(AnnotationKeys.NAME))) |
| 198 | .findAny(); |
| 199 | |
| 200 | if (!localPort.isPresent()) { |
| 201 | return Optional.empty(); |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | return localPort; |
| 206 | } |
| 207 | |
| 208 | private Optional<Device> findRemoteDeviceByChassisId(DeviceService deviceService, String remoteChassisIdString) { |
| 209 | String forMacTmp = remoteChassisIdString |
| 210 | .replace(".", "") |
| 211 | .replaceAll("(.{2})", "$1:") |
| 212 | .trim() |
| 213 | .substring(0, 17); |
| 214 | MacAddress mac = MacAddress.valueOf(forMacTmp); |
| 215 | Supplier<Stream<Device>> deviceStream = () -> |
| 216 | StreamSupport.stream(deviceService.getAvailableDevices().spliterator(), false); |
| 217 | Optional<Device> remoteDeviceOptional = deviceStream.get() |
| 218 | .filter(device -> device.chassisId() != null |
| 219 | && MacAddress.valueOf(device.chassisId().value()).equals(mac)) |
| 220 | .findAny(); |
| 221 | |
| 222 | if (remoteDeviceOptional.isPresent()) { |
| 223 | log.debug("remoteDevice found by chassis id: {}", forMacTmp); |
| 224 | return remoteDeviceOptional; |
| 225 | } else { |
| 226 | remoteDeviceOptional = deviceStream.get().filter(device -> |
| 227 | Tools.stream(deviceService.getPorts(device.id())) |
| 228 | .anyMatch(port -> port.annotations().keys().contains(AnnotationKeys.PORT_MAC) |
| 229 | && MacAddress.valueOf(port.annotations().value(AnnotationKeys.PORT_MAC)) |
| 230 | .equals(mac))) |
| 231 | .findAny(); |
| 232 | if (remoteDeviceOptional.isPresent()) { |
| 233 | log.debug("remoteDevice found by port mac: {}", forMacTmp); |
| 234 | return remoteDeviceOptional; |
| 235 | } else { |
| 236 | return Optional.empty(); |
| 237 | } |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | private Optional<Port> findDestinationPortByName(String remotePortName, |
| 242 | DeviceService deviceService, |
| 243 | Device remoteDevice) { |
| 244 | Optional<Port> remotePort = deviceService.getPorts(remoteDevice.id()) |
| 245 | .stream().filter(port -> remotePortName.equals(port.annotations().value(AnnotationKeys.PORT_NAME))) |
| 246 | .findAny(); |
| 247 | |
| 248 | if (remotePort.isPresent()) { |
| 249 | return remotePort; |
| 250 | } else { |
| 251 | int portNumber = Integer.valueOf(remotePortName.replaceAll("\\D+", "")); |
| 252 | DefaultAnnotations.Builder annotations = DefaultAnnotations.builder() |
| 253 | .set(AnnotationKeys.PORT_NAME, remotePortName); |
| 254 | |
| 255 | return Optional.of(new DefaultPort(remoteDevice, PortNumber.portNumber(portNumber, remotePortName), |
| 256 | true, |
| 257 | annotations.build())); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | private static Set<LinkDescription> buildLinkPair(DeviceId localDevId, |
| 262 | Port localPort, |
| 263 | DeviceId remoteDevId, |
| 264 | Port remotePort) { |
| 265 | |
| 266 | Set<LinkDescription> linkDescriptions = Sets.newHashSet(); |
| 267 | ConnectPoint local = new ConnectPoint(localDevId, localPort.number()); |
| 268 | ConnectPoint remote = new ConnectPoint(remoteDevId, remotePort.number()); |
| 269 | DefaultAnnotations annotations = DefaultAnnotations.builder() |
DongRyeol Cha | ce65cc0 | 2018-07-23 15:02:28 +0900 | [diff] [blame] | 270 | .set(AnnotationKeys.LAYER, "ETHERNET") |
DongRyeol Cha | 06041fa | 2018-06-07 10:23:32 +0900 | [diff] [blame] | 271 | .build(); |
| 272 | |
| 273 | linkDescriptions.add(new DefaultLinkDescription( |
| 274 | remote, local, Link.Type.DIRECT, true, annotations)); |
| 275 | |
| 276 | return linkDescriptions; |
| 277 | } |
| 278 | } |