Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2019-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 | |
| 17 | package org.onosproject.p4runtime.ctl.client; |
| 18 | |
| 19 | import com.google.common.util.concurrent.Futures; |
| 20 | import io.grpc.stub.StreamObserver; |
| 21 | import org.onosproject.net.pi.model.PiActionProfileId; |
| 22 | import org.onosproject.net.pi.model.PiCounterId; |
| 23 | import org.onosproject.net.pi.model.PiMeterId; |
| 24 | import org.onosproject.net.pi.model.PiPipeconf; |
| 25 | import org.onosproject.net.pi.model.PiTableId; |
| 26 | import org.onosproject.net.pi.runtime.PiHandle; |
| 27 | import org.onosproject.p4runtime.api.P4RuntimeReadClient; |
| 28 | import org.onosproject.p4runtime.ctl.codec.CodecException; |
| 29 | import org.onosproject.p4runtime.ctl.utils.P4InfoBrowser; |
| 30 | import org.onosproject.p4runtime.ctl.utils.PipeconfHelper; |
| 31 | import org.slf4j.Logger; |
| 32 | import p4.v1.P4RuntimeOuterClass; |
| 33 | |
| 34 | import java.util.concurrent.CompletableFuture; |
| 35 | |
| 36 | import static com.google.common.base.Preconditions.checkNotNull; |
| 37 | import static java.util.concurrent.CompletableFuture.completedFuture; |
| 38 | import static org.onosproject.p4runtime.ctl.client.P4RuntimeClientImpl.SHORT_TIMEOUT_SECONDS; |
| 39 | import static org.onosproject.p4runtime.ctl.codec.Codecs.CODECS; |
| 40 | import static org.slf4j.LoggerFactory.getLogger; |
| 41 | |
| 42 | /** |
| 43 | * Handles the creation of P4Runtime ReadRequest and execution of the Read RPC |
| 44 | * on the server. |
| 45 | */ |
| 46 | public final class ReadRequestImpl implements P4RuntimeReadClient.ReadRequest { |
| 47 | |
| 48 | private static final Logger log = getLogger(ReadRequestImpl.class); |
| 49 | |
| 50 | private final P4RuntimeClientImpl client; |
| 51 | private final PiPipeconf pipeconf; |
| 52 | private final P4RuntimeOuterClass.ReadRequest.Builder requestMsg; |
| 53 | |
| 54 | ReadRequestImpl(P4RuntimeClientImpl client, PiPipeconf pipeconf) { |
| 55 | this.client = client; |
| 56 | this.pipeconf = pipeconf; |
| 57 | this.requestMsg = P4RuntimeOuterClass.ReadRequest.newBuilder() |
| 58 | .setDeviceId(client.p4DeviceId()); |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public P4RuntimeReadClient.ReadRequest handles(Iterable<? extends PiHandle> handles) { |
| 63 | checkNotNull(handles); |
| 64 | handles.forEach(this::handle); |
| 65 | return this; |
| 66 | } |
| 67 | |
| 68 | @Override |
| 69 | public P4RuntimeReadClient.ReadRequest tableEntries(Iterable<PiTableId> tableIds) { |
| 70 | checkNotNull(tableIds); |
| 71 | tableIds.forEach(this::tableEntries); |
| 72 | return this; |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public P4RuntimeReadClient.ReadRequest defaultTableEntry(Iterable<PiTableId> tableIds) { |
| 77 | checkNotNull(tableIds); |
| 78 | tableIds.forEach(this::defaultTableEntry); |
| 79 | return this; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public P4RuntimeReadClient.ReadRequest actionProfileGroups(Iterable<PiActionProfileId> actionProfileIds) { |
| 84 | checkNotNull(actionProfileIds); |
| 85 | actionProfileIds.forEach(this::actionProfileGroups); |
| 86 | return this; |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public P4RuntimeReadClient.ReadRequest actionProfileMembers(Iterable<PiActionProfileId> actionProfileIds) { |
| 91 | checkNotNull(actionProfileIds); |
| 92 | actionProfileIds.forEach(this::actionProfileMembers); |
| 93 | return this; |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public P4RuntimeReadClient.ReadRequest counterCells(Iterable<PiCounterId> counterIds) { |
| 98 | checkNotNull(counterIds); |
| 99 | counterIds.forEach(this::counterCells); |
| 100 | return this; |
| 101 | } |
| 102 | |
| 103 | @Override |
| 104 | public P4RuntimeReadClient.ReadRequest directCounterCells(Iterable<PiTableId> tableIds) { |
| 105 | checkNotNull(tableIds); |
| 106 | tableIds.forEach(this::directCounterCells); |
| 107 | return this; |
| 108 | } |
| 109 | |
| 110 | @Override |
| 111 | public P4RuntimeReadClient.ReadRequest meterCells(Iterable<PiMeterId> meterIds) { |
| 112 | checkNotNull(meterIds); |
| 113 | meterIds.forEach(this::meterCells); |
| 114 | return this; |
| 115 | } |
| 116 | |
| 117 | @Override |
| 118 | public P4RuntimeReadClient.ReadRequest directMeterCells(Iterable<PiTableId> tableIds) { |
| 119 | checkNotNull(tableIds); |
| 120 | tableIds.forEach(this::directMeterCells); |
| 121 | return this; |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public P4RuntimeReadClient.ReadRequest handle(PiHandle handle) { |
| 126 | checkNotNull(handle); |
| 127 | try { |
| 128 | requestMsg.addEntities(CODECS.handle().encode(handle, null, pipeconf)); |
| 129 | } catch (CodecException e) { |
| 130 | log.warn("Unable to read {} from {}: {} [{}]", |
| 131 | handle.entityType(), client.deviceId(), e.getMessage(), handle); |
| 132 | } |
| 133 | return this; |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public P4RuntimeReadClient.ReadRequest tableEntries(PiTableId tableId) { |
| 138 | try { |
| 139 | doTableEntry(tableId, false); |
| 140 | } catch (InternalRequestException e) { |
| 141 | log.warn("Unable to read entries for table '{}' from {}: {}", |
| 142 | tableId, client.deviceId(), e.getMessage()); |
| 143 | } |
| 144 | return this; |
| 145 | } |
| 146 | |
| 147 | @Override |
| 148 | public P4RuntimeReadClient.ReadRequest defaultTableEntry(PiTableId tableId) { |
| 149 | try { |
| 150 | doTableEntry(tableId, true); |
| 151 | } catch (InternalRequestException e) { |
| 152 | log.warn("Unable to read default entry for table '{}' from {}: {}", |
| 153 | tableId, client.deviceId(), e.getMessage()); |
| 154 | } |
| 155 | return this; |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | public P4RuntimeReadClient.ReadRequest actionProfileGroups(PiActionProfileId actionProfileId) { |
| 160 | try { |
| 161 | requestMsg.addEntities( |
| 162 | P4RuntimeOuterClass.Entity.newBuilder() |
| 163 | .setActionProfileGroup( |
| 164 | P4RuntimeOuterClass.ActionProfileGroup.newBuilder() |
| 165 | .setActionProfileId( |
| 166 | p4ActionProfileId(actionProfileId)) |
| 167 | .build()) |
| 168 | .build()); |
| 169 | } catch (InternalRequestException e) { |
| 170 | log.warn("Unable to read groups for action profile '{}' from {}: {}", |
| 171 | actionProfileId, client.deviceId(), e.getMessage()); |
| 172 | } |
| 173 | return this; |
| 174 | } |
| 175 | |
| 176 | @Override |
| 177 | public P4RuntimeReadClient.ReadRequest actionProfileMembers(PiActionProfileId actionProfileId) { |
| 178 | try { |
| 179 | requestMsg.addEntities( |
| 180 | P4RuntimeOuterClass.Entity.newBuilder() |
| 181 | .setActionProfileMember( |
| 182 | P4RuntimeOuterClass.ActionProfileMember.newBuilder() |
| 183 | .setActionProfileId( |
| 184 | p4ActionProfileId(actionProfileId)) |
| 185 | .build()) |
| 186 | .build()); |
| 187 | } catch (InternalRequestException e) { |
| 188 | log.warn("Unable to read members for action profile '{}' from {}: {}", |
| 189 | actionProfileId, client.deviceId(), e.getMessage()); |
| 190 | } |
| 191 | return this; |
| 192 | } |
| 193 | |
| 194 | @Override |
| 195 | public P4RuntimeReadClient.ReadRequest counterCells(PiCounterId counterId) { |
| 196 | try { |
| 197 | requestMsg.addEntities( |
| 198 | P4RuntimeOuterClass.Entity.newBuilder() |
| 199 | .setCounterEntry( |
| 200 | P4RuntimeOuterClass.CounterEntry.newBuilder() |
| 201 | .setCounterId(p4CounterId(counterId)) |
| 202 | .build()) |
| 203 | .build()); |
| 204 | } catch (InternalRequestException e) { |
| 205 | log.warn("Unable to read cells for counter '{}' from {}: {}", |
| 206 | counterId, client.deviceId(), e.getMessage()); |
| 207 | } |
| 208 | return this; |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public P4RuntimeReadClient.ReadRequest meterCells(PiMeterId meterId) { |
| 213 | try { |
| 214 | requestMsg.addEntities( |
| 215 | P4RuntimeOuterClass.Entity.newBuilder() |
| 216 | .setMeterEntry( |
| 217 | P4RuntimeOuterClass.MeterEntry.newBuilder() |
| 218 | .setMeterId(p4MeterId(meterId)) |
| 219 | .build()) |
| 220 | .build()); |
| 221 | } catch (InternalRequestException e) { |
| 222 | log.warn("Unable to read cells for meter '{}' from {}: {}", |
| 223 | meterId, client.deviceId(), e.getMessage()); |
| 224 | } |
| 225 | return this; |
| 226 | } |
| 227 | |
| 228 | @Override |
| 229 | public P4RuntimeReadClient.ReadRequest directCounterCells(PiTableId tableId) { |
| 230 | try { |
| 231 | requestMsg.addEntities( |
| 232 | P4RuntimeOuterClass.Entity.newBuilder() |
| 233 | .setDirectCounterEntry( |
| 234 | P4RuntimeOuterClass.DirectCounterEntry.newBuilder() |
| 235 | .setTableEntry( |
| 236 | P4RuntimeOuterClass.TableEntry |
| 237 | .newBuilder() |
| 238 | .setTableId(p4TableId(tableId)) |
| 239 | .build()) |
| 240 | .build()) |
| 241 | .build()); |
| 242 | } catch (InternalRequestException e) { |
| 243 | log.warn("Unable to read direct counter cells for table '{}' from {}: {}", |
| 244 | tableId, client.deviceId(), e.getMessage()); |
| 245 | } |
| 246 | return this; |
| 247 | } |
| 248 | |
| 249 | @Override |
| 250 | public P4RuntimeReadClient.ReadRequest directMeterCells(PiTableId tableId) { |
| 251 | try { |
| 252 | requestMsg.addEntities( |
| 253 | P4RuntimeOuterClass.Entity.newBuilder() |
| 254 | .setDirectMeterEntry( |
| 255 | P4RuntimeOuterClass.DirectMeterEntry.newBuilder() |
| 256 | .setTableEntry( |
| 257 | P4RuntimeOuterClass.TableEntry |
| 258 | .newBuilder() |
| 259 | .setTableId(p4TableId(tableId)) |
| 260 | .build()) |
| 261 | .build()) |
| 262 | .build()); |
| 263 | } catch (InternalRequestException e) { |
| 264 | log.warn("Unable to read direct meter cells for table '{}' from {}: {}", |
| 265 | tableId, client.deviceId(), e.getMessage()); |
| 266 | } |
| 267 | return this; |
| 268 | } |
| 269 | |
| 270 | private void doTableEntry(PiTableId piTableId, boolean defaultEntries) |
| 271 | throws InternalRequestException { |
| 272 | checkNotNull(piTableId); |
| 273 | final P4RuntimeOuterClass.Entity entityMsg = P4RuntimeOuterClass.Entity |
| 274 | .newBuilder() |
| 275 | .setTableEntry( |
| 276 | P4RuntimeOuterClass.TableEntry.newBuilder() |
| 277 | .setTableId(p4TableId(piTableId)) |
| 278 | .setIsDefaultAction(defaultEntries) |
| 279 | .setCounterData(P4RuntimeOuterClass.CounterData |
| 280 | .getDefaultInstance()) |
| 281 | .build()) |
| 282 | .build(); |
| 283 | requestMsg.addEntities(entityMsg); |
| 284 | } |
| 285 | |
| 286 | @Override |
| 287 | public CompletableFuture<P4RuntimeReadClient.ReadResponse> submit() { |
| 288 | final P4RuntimeOuterClass.ReadRequest readRequest = requestMsg.build(); |
| 289 | log.debug("Sending read request to {} for {} entities...", |
| 290 | client.deviceId(), readRequest.getEntitiesCount()); |
| 291 | if (readRequest.getEntitiesCount() == 0) { |
| 292 | // No need to ask the server. |
| 293 | return completedFuture(ReadResponseImpl.EMPTY); |
| 294 | } |
| 295 | final CompletableFuture<P4RuntimeReadClient.ReadResponse> future = |
| 296 | new CompletableFuture<>(); |
| 297 | // Instantiate response builder and let stream observer populate it. |
| 298 | final ReadResponseImpl.Builder responseBuilder = |
| 299 | ReadResponseImpl.builder(client.deviceId(), pipeconf); |
| 300 | final StreamObserver<P4RuntimeOuterClass.ReadResponse> observer = |
| 301 | new StreamObserver<P4RuntimeOuterClass.ReadResponse>() { |
| 302 | @Override |
| 303 | public void onNext(P4RuntimeOuterClass.ReadResponse value) { |
| 304 | log.debug("Received read response from {} with {} entities...", |
| 305 | client.deviceId(), value.getEntitiesCount()); |
| 306 | value.getEntitiesList().forEach(responseBuilder::addEntity); |
| 307 | } |
| 308 | @Override |
| 309 | public void onError(Throwable t) { |
| 310 | client.handleRpcError(t, "READ"); |
| 311 | // TODO: implement parsing of trailer errors |
| 312 | future.complete(responseBuilder.fail(t)); |
| 313 | } |
| 314 | @Override |
| 315 | public void onCompleted() { |
| 316 | future.complete(responseBuilder.build()); |
| 317 | } |
| 318 | }; |
| 319 | client.execRpc(s -> s.read(readRequest, observer), SHORT_TIMEOUT_SECONDS); |
| 320 | return future; |
| 321 | } |
| 322 | |
| 323 | @Override |
| 324 | public P4RuntimeReadClient.ReadResponse submitSync() { |
| 325 | return Futures.getUnchecked(submit()); |
| 326 | } |
| 327 | |
| 328 | private int p4TableId(PiTableId piTableId) throws InternalRequestException { |
| 329 | try { |
| 330 | return getBrowser().tables().getByName(piTableId.id()) |
| 331 | .getPreamble().getId(); |
| 332 | } catch (P4InfoBrowser.NotFoundException e) { |
| 333 | throw new InternalRequestException(e.getMessage()); |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | private int p4ActionProfileId(PiActionProfileId piActionProfileId) |
| 338 | throws InternalRequestException { |
| 339 | try { |
| 340 | return getBrowser().actionProfiles().getByName(piActionProfileId.id()) |
| 341 | .getPreamble().getId(); |
| 342 | } catch (P4InfoBrowser.NotFoundException e) { |
| 343 | throw new InternalRequestException(e.getMessage()); |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | private int p4CounterId(PiCounterId counterId) |
| 348 | throws InternalRequestException { |
| 349 | try { |
| 350 | return getBrowser().counters().getByName(counterId.id()) |
| 351 | .getPreamble().getId(); |
| 352 | } catch (P4InfoBrowser.NotFoundException e) { |
| 353 | throw new InternalRequestException(e.getMessage()); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | private int p4MeterId(PiMeterId meterId) |
| 358 | throws InternalRequestException { |
| 359 | try { |
| 360 | return getBrowser().meters().getByName(meterId.id()) |
| 361 | .getPreamble().getId(); |
| 362 | } catch (P4InfoBrowser.NotFoundException e) { |
| 363 | throw new InternalRequestException(e.getMessage()); |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | private P4InfoBrowser getBrowser() throws InternalRequestException { |
| 368 | final P4InfoBrowser browser = PipeconfHelper.getP4InfoBrowser(pipeconf); |
| 369 | if (browser == null) { |
| 370 | throw new InternalRequestException( |
| 371 | "Unable to get a P4Info browser for pipeconf " + pipeconf.id()); |
| 372 | } |
| 373 | return browser; |
| 374 | } |
| 375 | |
| 376 | /** |
| 377 | * Internal exception to signal that something went wrong when populating |
| 378 | * the request. |
| 379 | */ |
| 380 | private final class InternalRequestException extends Exception { |
| 381 | |
| 382 | private InternalRequestException(String message) { |
| 383 | super(message); |
| 384 | } |
| 385 | } |
| 386 | } |