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.protobuf.ByteString; |
| 20 | import com.google.protobuf.TextFormat; |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 21 | import io.grpc.Status; |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 22 | import io.grpc.stub.StreamObserver; |
| 23 | import org.onosproject.net.pi.model.PiPipeconf; |
| 24 | import org.onosproject.p4runtime.api.P4RuntimePipelineConfigClient; |
| 25 | import org.onosproject.p4runtime.ctl.utils.PipeconfHelper; |
| 26 | import org.slf4j.Logger; |
| 27 | import p4.config.v1.P4InfoOuterClass; |
| 28 | import p4.tmp.P4Config; |
| 29 | import p4.v1.P4RuntimeOuterClass.ForwardingPipelineConfig; |
| 30 | import p4.v1.P4RuntimeOuterClass.GetForwardingPipelineConfigRequest; |
| 31 | import p4.v1.P4RuntimeOuterClass.GetForwardingPipelineConfigResponse; |
| 32 | import p4.v1.P4RuntimeOuterClass.SetForwardingPipelineConfigRequest; |
| 33 | import p4.v1.P4RuntimeOuterClass.SetForwardingPipelineConfigResponse; |
| 34 | |
| 35 | import java.nio.ByteBuffer; |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 36 | import java.util.Objects; |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 37 | import java.util.concurrent.CompletableFuture; |
| 38 | |
| 39 | import static com.google.common.base.Preconditions.checkNotNull; |
| 40 | import static java.util.concurrent.CompletableFuture.completedFuture; |
| 41 | import static org.onosproject.p4runtime.ctl.client.P4RuntimeClientImpl.LONG_TIMEOUT_SECONDS; |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 42 | import static org.onosproject.p4runtime.ctl.client.P4RuntimeClientImpl.SHORT_TIMEOUT_SECONDS; |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 43 | import static org.slf4j.LoggerFactory.getLogger; |
| 44 | import static p4.v1.P4RuntimeOuterClass.GetForwardingPipelineConfigRequest.ResponseType.COOKIE_ONLY; |
| 45 | import static p4.v1.P4RuntimeOuterClass.SetForwardingPipelineConfigRequest.Action.VERIFY_AND_COMMIT; |
| 46 | |
| 47 | /** |
| 48 | * Implementation of P4RuntimePipelineConfigClient. Handles pipeline |
| 49 | * config-related RPCs. |
| 50 | */ |
| 51 | final class PipelineConfigClientImpl implements P4RuntimePipelineConfigClient { |
| 52 | |
| 53 | private static final Logger log = getLogger(PipelineConfigClientImpl.class); |
| 54 | |
| 55 | private static final SetForwardingPipelineConfigResponse DEFAULT_SET_RESPONSE = |
| 56 | SetForwardingPipelineConfigResponse.getDefaultInstance(); |
| 57 | |
| 58 | private final P4RuntimeClientImpl client; |
| 59 | |
| 60 | PipelineConfigClientImpl(P4RuntimeClientImpl client) { |
| 61 | this.client = client; |
| 62 | } |
| 63 | |
| 64 | @Override |
| 65 | public CompletableFuture<Boolean> setPipelineConfig( |
| 66 | PiPipeconf pipeconf, ByteBuffer deviceData) { |
| 67 | |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 68 | if (!client.isSessionOpen()) { |
| 69 | log.warn("Dropping set pipeline config request for {}, session is CLOSED", |
| 70 | client.deviceId()); |
| 71 | return completedFuture(false); |
| 72 | } |
| 73 | |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 74 | log.info("Setting pipeline config for {} to {}...", |
| 75 | client.deviceId(), pipeconf.id()); |
| 76 | |
| 77 | checkNotNull(deviceData, "deviceData cannot be null"); |
| 78 | |
| 79 | final ForwardingPipelineConfig pipelineConfigMsg = |
| 80 | buildForwardingPipelineConfigMsg(pipeconf, deviceData); |
| 81 | if (pipelineConfigMsg == null) { |
| 82 | // Error logged in buildForwardingPipelineConfigMsg() |
| 83 | return completedFuture(false); |
| 84 | } |
| 85 | |
| 86 | final SetForwardingPipelineConfigRequest requestMsg = |
| 87 | SetForwardingPipelineConfigRequest |
| 88 | .newBuilder() |
| 89 | .setDeviceId(client.p4DeviceId()) |
| 90 | .setElectionId(client.lastUsedElectionId()) |
| 91 | .setAction(VERIFY_AND_COMMIT) |
| 92 | .setConfig(pipelineConfigMsg) |
| 93 | .build(); |
| 94 | |
| 95 | final CompletableFuture<Boolean> future = new CompletableFuture<>(); |
| 96 | final StreamObserver<SetForwardingPipelineConfigResponse> responseObserver = |
| 97 | new StreamObserver<SetForwardingPipelineConfigResponse>() { |
| 98 | @Override |
| 99 | public void onNext(SetForwardingPipelineConfigResponse value) { |
| 100 | if (!DEFAULT_SET_RESPONSE.equals(value)) { |
| 101 | log.warn("Received invalid SetForwardingPipelineConfigResponse " + |
| 102 | " from {} [{}]", |
| 103 | client.deviceId(), |
| 104 | TextFormat.shortDebugString(value)); |
| 105 | future.complete(false); |
| 106 | } |
| 107 | // All good, pipeline is set. |
| 108 | future.complete(true); |
| 109 | } |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 110 | |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 111 | @Override |
| 112 | public void onError(Throwable t) { |
| 113 | client.handleRpcError(t, "SET-pipeline-config"); |
| 114 | future.complete(false); |
| 115 | } |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 116 | |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 117 | @Override |
| 118 | public void onCompleted() { |
| 119 | // Ignore, unary call. |
| 120 | } |
| 121 | }; |
| 122 | |
| 123 | client.execRpc( |
| 124 | s -> s.setForwardingPipelineConfig(requestMsg, responseObserver), |
| 125 | LONG_TIMEOUT_SECONDS); |
| 126 | |
| 127 | return future; |
| 128 | } |
| 129 | |
| 130 | private ForwardingPipelineConfig buildForwardingPipelineConfigMsg( |
| 131 | PiPipeconf pipeconf, ByteBuffer deviceData) { |
| 132 | |
| 133 | final P4InfoOuterClass.P4Info p4Info = PipeconfHelper.getP4Info(pipeconf); |
| 134 | if (p4Info == null) { |
| 135 | // Problem logged by PipeconfHelper. |
| 136 | return null; |
| 137 | } |
| 138 | final ForwardingPipelineConfig.Cookie cookieMsg = |
| 139 | ForwardingPipelineConfig.Cookie |
| 140 | .newBuilder() |
| 141 | .setCookie(pipeconf.fingerprint()) |
| 142 | .build(); |
| 143 | // FIXME: This is specific to PI P4Runtime implementation and should be |
| 144 | // moved to driver. |
| 145 | final P4Config.P4DeviceConfig p4DeviceConfigMsg = P4Config.P4DeviceConfig |
| 146 | .newBuilder() |
| 147 | .setExtras(P4Config.P4DeviceConfig.Extras.getDefaultInstance()) |
| 148 | .setReassign(true) |
| 149 | .setDeviceData(ByteString.copyFrom(deviceData)) |
| 150 | .build(); |
| 151 | return ForwardingPipelineConfig |
| 152 | .newBuilder() |
| 153 | .setP4Info(p4Info) |
| 154 | .setP4DeviceConfig(p4DeviceConfigMsg.toByteString()) |
| 155 | .setCookie(cookieMsg) |
| 156 | .build(); |
| 157 | } |
| 158 | |
| 159 | |
| 160 | @Override |
| 161 | public CompletableFuture<Boolean> isPipelineConfigSet( |
| 162 | PiPipeconf pipeconf, ByteBuffer expectedDeviceData) { |
| 163 | return getPipelineCookieFromServer() |
| 164 | .thenApply(cfgFromDevice -> comparePipelineConfig( |
| 165 | pipeconf, expectedDeviceData, cfgFromDevice)); |
| 166 | } |
| 167 | |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 168 | @Override |
| 169 | public CompletableFuture<Boolean> isAnyPipelineConfigSet() { |
| 170 | return getPipelineCookieFromServer().thenApply(Objects::nonNull); |
| 171 | } |
| 172 | |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 173 | private boolean comparePipelineConfig( |
| 174 | PiPipeconf pipeconf, ByteBuffer expectedDeviceData, |
| 175 | ForwardingPipelineConfig cfgFromDevice) { |
| 176 | if (cfgFromDevice == null) { |
| 177 | return false; |
| 178 | } |
| 179 | |
| 180 | final ForwardingPipelineConfig expectedCfg = buildForwardingPipelineConfigMsg( |
| 181 | pipeconf, expectedDeviceData); |
| 182 | if (expectedCfg == null) { |
| 183 | return false; |
| 184 | } |
| 185 | |
| 186 | if (cfgFromDevice.hasCookie()) { |
| 187 | return cfgFromDevice.getCookie().getCookie() == pipeconf.fingerprint(); |
| 188 | } |
| 189 | |
| 190 | // No cookie. |
| 191 | log.warn("{} returned GetForwardingPipelineConfigResponse " + |
| 192 | "with 'cookie' field unset. " + |
| 193 | "Will try by comparing 'device_data' and 'p4_info'...", |
| 194 | client.deviceId()); |
| 195 | |
| 196 | if (cfgFromDevice.getP4DeviceConfig().isEmpty() |
| 197 | && !expectedCfg.getP4DeviceConfig().isEmpty()) { |
| 198 | // Don't bother with a warn or error since we don't really allow |
| 199 | // updating the P4 blob to a different one without changing the |
| 200 | // P4Info. I.e, comparing just the P4Info should be enough for us. |
| 201 | log.debug("{} returned GetForwardingPipelineConfigResponse " + |
| 202 | "with empty 'p4_device_config' field, " + |
| 203 | "equality will be based only on P4Info", |
| 204 | client.deviceId()); |
| 205 | return cfgFromDevice.getP4Info().equals(expectedCfg.getP4Info()); |
| 206 | } |
| 207 | |
| 208 | return cfgFromDevice.getP4DeviceConfig() |
| 209 | .equals(expectedCfg.getP4DeviceConfig()) |
| 210 | && cfgFromDevice.getP4Info() |
| 211 | .equals(expectedCfg.getP4Info()); |
| 212 | } |
| 213 | |
| 214 | private CompletableFuture<ForwardingPipelineConfig> getPipelineCookieFromServer() { |
| 215 | final GetForwardingPipelineConfigRequest request = |
| 216 | GetForwardingPipelineConfigRequest |
| 217 | .newBuilder() |
| 218 | .setDeviceId(client.p4DeviceId()) |
| 219 | .setResponseType(COOKIE_ONLY) |
| 220 | .build(); |
| 221 | final CompletableFuture<ForwardingPipelineConfig> future = new CompletableFuture<>(); |
| 222 | final StreamObserver<GetForwardingPipelineConfigResponse> responseObserver = |
| 223 | new StreamObserver<GetForwardingPipelineConfigResponse>() { |
| 224 | @Override |
| 225 | public void onNext(GetForwardingPipelineConfigResponse value) { |
| 226 | if (value.hasConfig()) { |
| 227 | future.complete(value.getConfig()); |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 228 | if (!value.getConfig().getP4DeviceConfig().isEmpty()) { |
| 229 | log.warn("{} returned GetForwardingPipelineConfigResponse " + |
| 230 | "with p4_device_config field set " + |
| 231 | "({} bytes), but we requested COOKIE_ONLY", |
| 232 | client.deviceId(), |
| 233 | value.getConfig().getP4DeviceConfig().size()); |
| 234 | } |
| 235 | if (value.getConfig().hasP4Info()) { |
| 236 | log.warn("{} returned GetForwardingPipelineConfigResponse " + |
| 237 | "with p4_info field set " + |
| 238 | "({} bytes), but we requested COOKIE_ONLY", |
| 239 | client.deviceId(), |
| 240 | value.getConfig().getP4Info().getSerializedSize()); |
| 241 | } |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 242 | } else { |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 243 | future.complete(null); |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 244 | log.warn("{} returned {} with 'config' field unset", |
| 245 | client.deviceId(), value.getClass().getSimpleName()); |
| 246 | } |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 247 | } |
| 248 | |
| 249 | @Override |
| 250 | public void onError(Throwable t) { |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 251 | future.complete(null); |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 252 | if (Status.fromThrowable(t).getCode() == |
| 253 | Status.Code.FAILED_PRECONDITION) { |
| 254 | // FAILED_PRECONDITION means that a pipeline |
| 255 | // config was not set in the first place, don't |
| 256 | // bother logging. |
| 257 | return; |
| 258 | } |
| 259 | client.handleRpcError(t, "GET-pipeline-config"); |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | @Override |
| 263 | public void onCompleted() { |
| 264 | // Ignore, unary call. |
| 265 | } |
| 266 | }; |
| 267 | // Use long timeout as the device might return the full P4 blob |
| 268 | // (e.g. server does not support cookie), over a slow network. |
| 269 | client.execRpc( |
| 270 | s -> s.getForwardingPipelineConfig(request, responseObserver), |
Carmelo Cascone | 3977ea4 | 2019-02-28 13:43:42 -0800 | [diff] [blame^] | 271 | SHORT_TIMEOUT_SECONDS); |
Carmelo Cascone | 4c289b7 | 2019-01-22 15:30:45 -0800 | [diff] [blame] | 272 | return future; |
| 273 | } |
| 274 | } |