Mao Lu | 1f52470 | 2017-02-22 17:05:12 +0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame^] | 2 | * Copyright 2016-present Open Networking Foundation |
Mao Lu | 1f52470 | 2017-02-22 17:05:12 +0800 | [diff] [blame] | 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.driver.optical.power; |
| 18 | |
| 19 | import java.util.concurrent.atomic.AtomicInteger; |
| 20 | import java.util.List; |
| 21 | |
| 22 | import com.google.common.collect.Range; |
| 23 | |
| 24 | import org.onosproject.driver.extensions.OplinkAttenuation; |
| 25 | import org.onosproject.net.OchSignal; |
| 26 | import org.onosproject.net.Direction; |
| 27 | import org.onosproject.net.Port; |
| 28 | import org.onosproject.net.PortNumber; |
| 29 | import org.onosproject.net.device.DeviceService; |
| 30 | import org.onosproject.net.driver.DriverHandler; |
| 31 | import org.onosproject.net.driver.HandlerBehaviour; |
| 32 | import org.onosproject.net.flow.DefaultFlowRule; |
| 33 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 34 | import org.onosproject.net.flow.FlowEntry; |
| 35 | import org.onosproject.net.flow.FlowRule; |
| 36 | import org.onosproject.net.flow.FlowRuleService; |
| 37 | import org.onosproject.net.flow.TrafficSelector; |
| 38 | import org.onosproject.net.flow.TrafficTreatment; |
| 39 | import org.onosproject.net.flow.criteria.Criterion; |
| 40 | import org.onosproject.net.flow.criteria.OchSignalCriterion; |
| 41 | import org.onosproject.net.flow.criteria.PortCriterion; |
| 42 | import org.onosproject.net.flow.instructions.ExtensionTreatment; |
| 43 | import org.onosproject.net.flow.instructions.ExtensionTreatmentType; |
| 44 | import org.onosproject.net.flow.instructions.Instruction; |
| 45 | import org.onosproject.net.flow.instructions.Instructions; |
| 46 | import org.onosproject.net.optical.OpticalAnnotations; |
| 47 | import org.onosproject.openflow.controller.Dpid; |
| 48 | import org.onosproject.openflow.controller.OpenFlowController; |
| 49 | import org.onosproject.openflow.controller.OpenFlowOpticalSwitch; |
| 50 | import org.onosproject.openflow.controller.OpenFlowSwitch; |
| 51 | import org.onosproject.openflow.controller.PortDescPropertyType; |
| 52 | import org.projectfloodlight.openflow.protocol.OFObject; |
| 53 | import org.projectfloodlight.openflow.protocol.OFPortOptical; |
| 54 | |
| 55 | import org.slf4j.Logger; |
| 56 | |
| 57 | import static org.slf4j.LoggerFactory.getLogger; |
| 58 | import static org.onosproject.net.Device.Type; |
| 59 | |
| 60 | /** |
| 61 | * Oplink power config utility. |
| 62 | */ |
| 63 | public class OplinkPowerConfigUtil { |
| 64 | |
| 65 | // Parent driver handler behaviour |
| 66 | private HandlerBehaviour behaviour; |
| 67 | // Transaction id to use. |
| 68 | private final AtomicInteger xidCounter = new AtomicInteger(0); |
| 69 | // Log |
| 70 | private final Logger log = getLogger(getClass()); |
| 71 | |
| 72 | // Component type |
| 73 | private enum ComponentType { |
| 74 | NONE, |
| 75 | PORT, |
| 76 | CHANNEL |
| 77 | } |
| 78 | |
| 79 | // Port properties for oplink devices, currently supports EDFA and ROADM. |
| 80 | // This type is mapped to OFPortDescPropOpticalTransport#getPortType() value. |
| 81 | private enum PortDescType { |
| 82 | NONE, |
| 83 | PA_LINE_IN, |
| 84 | PA_LINE_OUT, |
| 85 | BA_LINE_IN, |
| 86 | BA_LINE_OUT, |
| 87 | EXP_IN, |
| 88 | EXP_OUT, |
| 89 | AUX_IN, |
| 90 | AUX_OUT, |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Power threshold of each port, in 0.01 dB |
| 95 | * Note: |
| 96 | * These threshold configurations are just in use for a short time. |
| 97 | * In the future, the power threshold would be obtained from physical device. |
| 98 | */ |
| 99 | // EDFA |
| 100 | private static final long EDFA_POWER_IN_WEST_LOW_THRES = -1900L; |
| 101 | private static final long EDFA_POWER_IN_WEST_HIGH_THRES = 0L; |
| 102 | private static final long EDFA_POWER_IN_EAST_LOW_THRES = -3100L; |
| 103 | private static final long EDFA_POWER_IN_EAST_HIGH_THRES = 700L; |
| 104 | private static final long EDFA_POWER_OUT_LOW_THRES = 0L; |
| 105 | private static final long EDFA_POWER_OUT_HIGH_THRES = 1900L; |
| 106 | // ROADM |
| 107 | private static final long ROADM_POWER_LINE_IN_LOW_THRES = -3000L; |
| 108 | private static final long ROADM_POWER_LINE_IN_HIGH_THRES = 2350L; |
| 109 | private static final long ROADM_POWER_LINE_OUT_LOW_THRES = 0L; |
| 110 | private static final long ROADM_POWER_LINE_OUT_HIGH_THRES = 2350L; |
| 111 | private static final long ROADM_POWER_OTHER_IN_LOW_THRES = -1500L; |
| 112 | private static final long ROADM_POWER_OTHER_IN_HIGH_THRES = 2000L; |
| 113 | private static final long ROADM_POWER_OTHER_OUT_LOW_THRES = -600L; |
| 114 | private static final long ROADM_POWER_OTHER_OUT_HIGH_THRES = 1500L; |
| 115 | private static final long ROADM_MIN_ATTENUATION = 0L; |
| 116 | private static final long ROADM_MAX_ATTENUATION = 2500L; |
MaoLu | 937cf42 | 2017-03-03 23:31:46 -0800 | [diff] [blame] | 117 | // SWITCH |
| 118 | private static final long SWITCH_POWER_LOW_THRES = -6000L; |
| 119 | private static final long SWITCH_POWER_HIGH_THRES = 6000L; |
Mao Lu | 1f52470 | 2017-02-22 17:05:12 +0800 | [diff] [blame] | 120 | |
| 121 | /** |
| 122 | * Create a new OplinkPowerConfigUtil. |
| 123 | * @param behaviour driver handler behaviour |
| 124 | */ |
| 125 | public OplinkPowerConfigUtil(HandlerBehaviour behaviour) { |
| 126 | this.behaviour = behaviour; |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Obtains specified port/channel target power. |
| 131 | * |
| 132 | * @param port the port number |
| 133 | * @param component the port component |
| 134 | * @return target power value in .01 dBm |
| 135 | */ |
| 136 | public Long getTargetPower(PortNumber port, Object component) { |
| 137 | switch (getComponentType(component)) { |
| 138 | case PORT: |
| 139 | return getPortPower(port, OpticalAnnotations.TARGET_POWER); |
| 140 | case CHANNEL: |
| 141 | return getChannelAttenuation(port, (OchSignal) component); |
| 142 | default: |
| 143 | return null; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Obtains specified port/channel current power. |
| 149 | * |
| 150 | * @param port the port number |
| 151 | * @param component the port component |
| 152 | * @return current power value in .01 dBm |
| 153 | */ |
| 154 | public Long getCurrentPower(PortNumber port, Object component) { |
| 155 | switch (getComponentType(component)) { |
| 156 | case PORT: |
| 157 | return getPortPower(port, OpticalAnnotations.CURRENT_POWER); |
| 158 | case CHANNEL: |
| 159 | return getCurrentChannelPower(port, (OchSignal) component); |
| 160 | default: |
| 161 | return null; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Sets specified port target power or channel attenuation. |
| 167 | * |
| 168 | * @param port the port number |
| 169 | * @param component the port component |
| 170 | * @param power target power in .01 dBm |
| 171 | */ |
| 172 | public void setTargetPower(PortNumber port, Object component, long power) { |
| 173 | switch (getComponentType(component)) { |
| 174 | case PORT: |
| 175 | setPortPower(port, power); |
| 176 | break; |
| 177 | case CHANNEL: |
| 178 | setChannelAttenuation(port, (OchSignal) component, power); |
| 179 | break; |
| 180 | default: |
| 181 | break; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Returns the acceptable target range for an output port/channel, null otherwise. |
| 187 | * |
| 188 | * @param port the port number |
| 189 | * @param component the port component |
| 190 | * @return power range |
| 191 | */ |
| 192 | public Range<Long> getTargetPowerRange(PortNumber port, Object component) { |
| 193 | switch (getComponentType(component)) { |
| 194 | case PORT: |
| 195 | return getTargetPortPowerRange(port); |
| 196 | case CHANNEL: |
| 197 | return getChannelAttenuationRange(port); |
| 198 | default: |
| 199 | return null; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Returns the working input power range for an input port, null otherwise. |
| 205 | * |
| 206 | * @param port the port number |
| 207 | * @param component the port component |
| 208 | * @return power range |
| 209 | */ |
| 210 | public Range<Long> getInputPowerRange(PortNumber port, Object component) { |
| 211 | switch (getComponentType(component)) { |
| 212 | case PORT: |
| 213 | return getInputPortPowerRange(port); |
| 214 | default: |
| 215 | return null; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Returns specified component type. |
| 221 | * |
| 222 | * @param component the port component |
| 223 | * @return component type |
| 224 | */ |
| 225 | private ComponentType getComponentType(Object component) { |
| 226 | if (component == null || component instanceof Direction) { |
| 227 | return ComponentType.PORT; |
| 228 | } else if (component instanceof OchSignal) { |
| 229 | return ComponentType.CHANNEL; |
| 230 | } |
| 231 | return ComponentType.NONE; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Returns current switch known to this OF controller. |
| 236 | * |
| 237 | * @return current switch |
| 238 | */ |
| 239 | private OpenFlowSwitch getOpenFlowDevice() { |
| 240 | final DriverHandler handler = behaviour.handler(); |
| 241 | final OpenFlowController controller = handler.get(OpenFlowController.class); |
| 242 | final Dpid dpid = Dpid.dpid(handler.data().deviceId().uri()); |
| 243 | OpenFlowSwitch sw = controller.getSwitch(dpid); |
| 244 | if (sw == null || !sw.isConnected()) { |
| 245 | log.warn("OpenFlow handshaker driver not found or device is not connected, dpid = {}", dpid); |
| 246 | return null; |
| 247 | } |
| 248 | return sw; |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Find oplink port description type from optical ports. |
| 253 | * |
| 254 | * @param opsw switch |
| 255 | * @param portNum the port number |
| 256 | * @return port oplink port description type |
| 257 | */ |
| 258 | private PortDescType getPortDescType(OpenFlowOpticalSwitch opsw, PortNumber portNum) { |
| 259 | for (PortDescPropertyType type : opsw.getPortTypes()) { |
| 260 | List<? extends OFObject> portsOf = opsw.getPortsOf(type); |
| 261 | for (OFObject op : portsOf) { |
| 262 | if (op instanceof OFPortOptical) { |
| 263 | OFPortOptical opticalPort = (OFPortOptical) op; |
| 264 | if ((long) opticalPort.getPortNo().getPortNumber() == portNum.toLong()) { |
| 265 | return PortDescType.values()[opticalPort.getDesc().get(0).getPortType()]; |
| 266 | } |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | return PortDescType.NONE; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Returns the target port power range. |
| 275 | * |
| 276 | * @param portNum the port number |
| 277 | * @return power range |
| 278 | */ |
| 279 | private Range<Long> getTargetPortPowerRange(PortNumber portNum) { |
| 280 | OpenFlowSwitch ofs = getOpenFlowDevice(); |
| 281 | if (ofs == null) { |
| 282 | return null; |
| 283 | } |
| 284 | PortDescType portType = getPortDescType((OpenFlowOpticalSwitch) ofs, portNum); |
| 285 | Type devType = ofs.deviceType(); |
| 286 | // FIXME |
| 287 | // Short time hard code. |
| 288 | // The power range will be obtained from physical device in the future. |
| 289 | switch (devType) { |
| 290 | case OPTICAL_AMPLIFIER: |
| 291 | if (portType == PortDescType.PA_LINE_OUT || portType == PortDescType.BA_LINE_OUT) { |
| 292 | return Range.closed(EDFA_POWER_OUT_LOW_THRES, EDFA_POWER_OUT_HIGH_THRES); |
| 293 | } |
| 294 | break; |
| 295 | case ROADM: |
| 296 | if (portType == PortDescType.PA_LINE_OUT) { |
| 297 | return Range.closed(ROADM_POWER_LINE_OUT_LOW_THRES, ROADM_POWER_LINE_OUT_HIGH_THRES); |
| 298 | } else if (portType == PortDescType.EXP_OUT || portType == PortDescType.AUX_OUT) { |
| 299 | return Range.closed(ROADM_POWER_OTHER_OUT_LOW_THRES, ROADM_POWER_OTHER_OUT_HIGH_THRES); |
| 300 | } |
| 301 | break; |
MaoLu | 937cf42 | 2017-03-03 23:31:46 -0800 | [diff] [blame] | 302 | case FIBER_SWITCH: |
| 303 | return Range.closed(SWITCH_POWER_LOW_THRES, SWITCH_POWER_HIGH_THRES); |
Mao Lu | 1f52470 | 2017-02-22 17:05:12 +0800 | [diff] [blame] | 304 | default: |
| 305 | log.warn("Unexpected device type: {}", devType); |
| 306 | break; |
| 307 | } |
| 308 | // Unexpected port or device type. Do not need warning here for port polling. |
| 309 | return null; |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Returns the input port power range. |
| 314 | * |
| 315 | * @param portNum the port number |
| 316 | * @return power range |
| 317 | */ |
| 318 | private Range<Long> getInputPortPowerRange(PortNumber portNum) { |
| 319 | OpenFlowSwitch ofs = getOpenFlowDevice(); |
| 320 | if (ofs == null) { |
| 321 | return null; |
| 322 | } |
| 323 | PortDescType portType = getPortDescType((OpenFlowOpticalSwitch) ofs, portNum); |
| 324 | Type devType = ofs.deviceType(); |
| 325 | // FIXME |
| 326 | // Short time hard code. |
| 327 | // The port type and power range will be obtained from physical device in the future. |
| 328 | switch (devType) { |
| 329 | case OPTICAL_AMPLIFIER: |
| 330 | if (portType == PortDescType.PA_LINE_IN) { |
| 331 | return Range.closed(EDFA_POWER_IN_WEST_LOW_THRES, EDFA_POWER_IN_WEST_HIGH_THRES); |
| 332 | } else if (portType == PortDescType.BA_LINE_IN) { |
| 333 | return Range.closed(EDFA_POWER_IN_EAST_LOW_THRES, EDFA_POWER_IN_EAST_HIGH_THRES); |
| 334 | } |
| 335 | break; |
| 336 | case ROADM: |
| 337 | if (portType == PortDescType.PA_LINE_IN) { |
| 338 | return Range.closed(ROADM_POWER_LINE_IN_LOW_THRES, ROADM_POWER_LINE_IN_HIGH_THRES); |
| 339 | } else if (portType == PortDescType.EXP_IN || portType == PortDescType.AUX_IN) { |
| 340 | return Range.closed(ROADM_POWER_OTHER_IN_LOW_THRES, ROADM_POWER_OTHER_IN_HIGH_THRES); |
| 341 | } |
| 342 | break; |
MaoLu | 937cf42 | 2017-03-03 23:31:46 -0800 | [diff] [blame] | 343 | case FIBER_SWITCH: |
| 344 | return Range.closed(SWITCH_POWER_LOW_THRES, SWITCH_POWER_HIGH_THRES); |
Mao Lu | 1f52470 | 2017-02-22 17:05:12 +0800 | [diff] [blame] | 345 | default: |
| 346 | log.warn("Unexpected device type: {}", devType); |
| 347 | break; |
| 348 | } |
| 349 | // Unexpected port or device type. Do not need warning here for port polling. |
| 350 | return null; |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * Returns the acceptable attenuation range for a connection (represented as |
| 355 | * a flow with attenuation instruction). Port can be either the input or |
| 356 | * output port of the connection. Returns null if the connection does not |
| 357 | * support attenuation. |
| 358 | * |
| 359 | * @param portNum the port number |
| 360 | * @return attenuation range |
| 361 | */ |
| 362 | private Range<Long> getChannelAttenuationRange(PortNumber portNum) { |
| 363 | OpenFlowSwitch ofs = getOpenFlowDevice(); |
| 364 | if (ofs == null) { |
| 365 | return null; |
| 366 | } |
| 367 | if (ofs.deviceType() != Type.ROADM) { |
| 368 | return null; |
| 369 | } |
| 370 | PortDescType portType = getPortDescType((OpenFlowOpticalSwitch) ofs, portNum); |
| 371 | // Short time hard code. |
| 372 | // The port type and attenuation range will be obtained from physical device in the future. |
| 373 | if (portType == PortDescType.PA_LINE_OUT || portType == PortDescType.EXP_IN || |
| 374 | portType == PortDescType.AUX_IN) { |
| 375 | return Range.closed(ROADM_MIN_ATTENUATION, ROADM_MAX_ATTENUATION); |
| 376 | } |
| 377 | // Unexpected port. Do not need warning here for port polling. |
| 378 | return null; |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * Find specified port power from port description. |
| 383 | * |
| 384 | * @param portNum the port number |
| 385 | * @param annotation annotation in port description |
| 386 | * @return power value in 0.01 dBm |
| 387 | */ |
| 388 | private Long getPortPower(PortNumber portNum, String annotation) { |
| 389 | // Check if switch is connected, otherwise do not return value in store, which is obsolete. |
| 390 | if (getOpenFlowDevice() == null) { |
| 391 | // Warning already exists in method getOpenFlowDevice() |
| 392 | return null; |
| 393 | } |
| 394 | final DriverHandler handler = behaviour.handler(); |
| 395 | DeviceService deviceService = handler.get(DeviceService.class); |
| 396 | Port port = deviceService.getPort(handler.data().deviceId(), portNum); |
| 397 | if (port == null) { |
| 398 | log.warn("Unexpected port: {}", portNum); |
| 399 | return null; |
| 400 | } |
| 401 | String power = port.annotations().value(annotation); |
| 402 | if (power == null) { |
MaoLu | dd5a00b | 2017-03-14 11:19:48 -0700 | [diff] [blame] | 403 | // Do not need warning here for port polling. |
| 404 | log.debug("Cannot get {} from port {}.", annotation, portNum); |
Mao Lu | 1f52470 | 2017-02-22 17:05:12 +0800 | [diff] [blame] | 405 | return null; |
| 406 | } |
| 407 | return Long.valueOf(power); |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * Sets specified port power value. |
| 412 | * |
| 413 | * @param portNum the port number |
| 414 | * @param power power value |
| 415 | */ |
| 416 | private void setPortPower(PortNumber portNum, long power) { |
| 417 | OpenFlowSwitch device = getOpenFlowDevice(); |
| 418 | // Check if switch is connected |
| 419 | if (device == null) { |
| 420 | return; |
| 421 | } |
| 422 | device.sendMsg(device.factory().buildOplinkPortPowerSet() |
| 423 | .setXid(xidCounter.getAndIncrement()) |
| 424 | .setPort((int) portNum.toLong()) |
| 425 | .setPowerValue((int) power) |
| 426 | .build()); |
| 427 | } |
| 428 | |
| 429 | /** |
| 430 | * Gets specified channel attenuation. |
| 431 | * |
| 432 | * @param portNum the port number |
| 433 | * @param och channel signal |
| 434 | * @return atteuation in 0.01 dB |
| 435 | */ |
| 436 | private Long getChannelAttenuation(PortNumber portNum, OchSignal och) { |
| 437 | FlowEntry flowEntry = findFlow(portNum, och); |
| 438 | if (flowEntry == null) { |
| 439 | return null; |
| 440 | } |
| 441 | List<Instruction> instructions = flowEntry.treatment().allInstructions(); |
| 442 | for (Instruction ins : instructions) { |
| 443 | if (ins.type() != Instruction.Type.EXTENSION) { |
| 444 | continue; |
| 445 | } |
| 446 | ExtensionTreatment ext = ((Instructions.ExtensionInstructionWrapper) ins).extensionInstruction(); |
| 447 | if (ext.type() == ExtensionTreatmentType.ExtensionTreatmentTypes.OPLINK_ATTENUATION.type()) { |
| 448 | return (long) ((OplinkAttenuation) ext).getAttenuation(); |
| 449 | } |
| 450 | } |
| 451 | return null; |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Sets specified channle attenuation. |
| 456 | * |
| 457 | * @param portNum the port number |
| 458 | * @param och channel signal |
| 459 | * @param power attenuation in 0.01 dB |
| 460 | */ |
| 461 | private void setChannelAttenuation(PortNumber portNum, OchSignal och, long power) { |
| 462 | FlowEntry flowEntry = findFlow(portNum, och); |
| 463 | if (flowEntry == null) { |
| 464 | log.warn("Target channel power not set"); |
| 465 | return; |
| 466 | } |
| 467 | final DriverHandler handler = behaviour.handler(); |
| 468 | for (Instruction ins : flowEntry.treatment().allInstructions()) { |
| 469 | if (ins.type() != Instruction.Type.EXTENSION) { |
| 470 | continue; |
| 471 | } |
| 472 | ExtensionTreatment ext = ((Instructions.ExtensionInstructionWrapper) ins).extensionInstruction(); |
| 473 | if (ext.type() == ExtensionTreatmentType.ExtensionTreatmentTypes.OPLINK_ATTENUATION.type()) { |
| 474 | ((OplinkAttenuation) ext).setAttenuation((int) power); |
| 475 | FlowRuleService service = handler.get(FlowRuleService.class); |
| 476 | service.applyFlowRules(flowEntry); |
| 477 | return; |
| 478 | } |
| 479 | } |
| 480 | addAttenuation(flowEntry, power); |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Gets specified channle current power. |
| 485 | * |
| 486 | * @param portNum the port number |
| 487 | * @param och channel signal |
| 488 | * @return power value in 0.01 dBm |
| 489 | */ |
| 490 | private Long getCurrentChannelPower(PortNumber portNum, OchSignal och) { |
| 491 | FlowEntry flowEntry = findFlow(portNum, och); |
| 492 | if (flowEntry != null) { |
| 493 | // TODO put somewhere else if possible |
| 494 | // We put channel power in packets |
| 495 | return flowEntry.packets(); |
| 496 | } |
| 497 | return null; |
| 498 | } |
| 499 | |
| 500 | /** |
| 501 | * Find matching flow on device. |
| 502 | * |
| 503 | * @param portNum the port number |
| 504 | * @param och channel signal |
| 505 | * @return flow entry |
| 506 | */ |
| 507 | private FlowEntry findFlow(PortNumber portNum, OchSignal och) { |
| 508 | final DriverHandler handler = behaviour.handler(); |
| 509 | FlowRuleService service = handler.get(FlowRuleService.class); |
| 510 | Iterable<FlowEntry> flowEntries = service.getFlowEntries(handler.data().deviceId()); |
| 511 | |
| 512 | // Return first matching flow |
| 513 | for (FlowEntry entry : flowEntries) { |
| 514 | TrafficSelector selector = entry.selector(); |
| 515 | OchSignalCriterion entrySigid = |
| 516 | (OchSignalCriterion) selector.getCriterion(Criterion.Type.OCH_SIGID); |
| 517 | // Check channel |
| 518 | if (entrySigid != null && och.equals(entrySigid.lambda())) { |
| 519 | // Check input port |
| 520 | PortCriterion entryPort = |
| 521 | (PortCriterion) selector.getCriterion(Criterion.Type.IN_PORT); |
| 522 | if (entryPort != null && portNum.equals(entryPort.port())) { |
| 523 | return entry; |
| 524 | } |
| 525 | |
| 526 | // Check output port |
| 527 | TrafficTreatment treatment = entry.treatment(); |
| 528 | for (Instruction instruction : treatment.allInstructions()) { |
| 529 | if (instruction.type() == Instruction.Type.OUTPUT && |
| 530 | ((Instructions.OutputInstruction) instruction).port().equals(portNum)) { |
| 531 | return entry; |
| 532 | } |
| 533 | } |
| 534 | } |
| 535 | } |
| 536 | log.warn("No matching flow found"); |
| 537 | return null; |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * Replace flow with new flow containing Oplink attenuation extension instruction. Also resets metrics. |
| 542 | * |
| 543 | * @param flowEntry flow entry |
| 544 | * @param power power value |
| 545 | */ |
| 546 | private void addAttenuation(FlowEntry flowEntry, long power) { |
| 547 | FlowRule.Builder flowBuilder = new DefaultFlowRule.Builder() |
| 548 | .withCookie(flowEntry.id().value()) |
| 549 | .withPriority(flowEntry.priority()) |
| 550 | .forDevice(flowEntry.deviceId()) |
| 551 | .forTable(flowEntry.tableId()); |
| 552 | if (flowEntry.isPermanent()) { |
| 553 | flowBuilder.makePermanent(); |
| 554 | } else { |
| 555 | flowBuilder.makeTemporary(flowEntry.timeout()); |
| 556 | } |
| 557 | flowBuilder.withSelector(flowEntry.selector()); |
| 558 | // Copy original instructions and add attenuation instruction |
| 559 | TrafficTreatment.Builder treatmentBuilder = DefaultTrafficTreatment.builder(); |
| 560 | flowEntry.treatment().allInstructions().forEach(ins -> treatmentBuilder.add(ins)); |
| 561 | final DriverHandler handler = behaviour.handler(); |
| 562 | treatmentBuilder.add(Instructions.extension(new OplinkAttenuation((int) power), handler.data().deviceId())); |
| 563 | flowBuilder.withTreatment(treatmentBuilder.build()); |
| 564 | |
| 565 | FlowRuleService service = handler.get(FlowRuleService.class); |
| 566 | service.applyFlowRules(flowBuilder.build()); |
| 567 | } |
| 568 | } |