| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.drivers.p4runtime; |
| |
| import io.grpc.ManagedChannelBuilder; |
| import io.grpc.netty.NettyChannelBuilder; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.driver.AbstractHandlerBehaviour; |
| import org.onosproject.net.pi.model.PiPipeconf; |
| import org.onosproject.net.pi.runtime.PiPipeconfService; |
| import org.onosproject.net.pi.runtime.PiTranslationService; |
| import org.onosproject.p4runtime.api.P4RuntimeClient; |
| import org.onosproject.p4runtime.api.P4RuntimeController; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Abstract implementation of a behaviour handler for a P4Runtime device. |
| */ |
| public class AbstractP4RuntimeHandlerBehaviour extends AbstractHandlerBehaviour { |
| |
| public static final String P4RUNTIME_SERVER_ADDR_KEY = "p4runtime_ip"; |
| public static final String P4RUNTIME_SERVER_PORT_KEY = "p4runtime_port"; |
| public static final String P4RUNTIME_DEVICE_ID_KEY = "p4runtime_deviceId"; |
| |
| protected final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| // Initialized by setupBehaviour() |
| protected DeviceId deviceId; |
| protected DeviceService deviceService; |
| protected Device device; |
| protected P4RuntimeController controller; |
| protected PiPipeconf pipeconf; |
| protected P4RuntimeClient client; |
| protected PiTranslationService piTranslationService; |
| |
| /** |
| * Initializes this behaviour attributes. Returns true if the operation was successful, false otherwise. This method |
| * assumes that the P4runtime controller already has a client for this device and that the device has been created |
| * in the core. |
| * |
| * @return true if successful, false otherwise |
| */ |
| protected boolean setupBehaviour() { |
| deviceId = handler().data().deviceId(); |
| |
| deviceService = handler().get(DeviceService.class); |
| device = deviceService.getDevice(deviceId); |
| if (device == null) { |
| log.warn("Unable to find device with id {}, aborting operation", deviceId); |
| return false; |
| } |
| |
| controller = handler().get(P4RuntimeController.class); |
| if (!controller.hasClient(deviceId)) { |
| log.warn("Unable to find client for {}, aborting operation", deviceId); |
| return false; |
| } |
| client = controller.getClient(deviceId); |
| |
| PiPipeconfService piPipeconfService = handler().get(PiPipeconfService.class); |
| if (!piPipeconfService.ofDevice(deviceId).isPresent() || |
| !piPipeconfService.getPipeconf(piPipeconfService.ofDevice(deviceId).get()).isPresent()) { |
| log.warn("Unable to get the pipeconf of {}, aborting operation", deviceId); |
| return false; |
| } |
| pipeconf = piPipeconfService.getPipeconf(piPipeconfService.ofDevice(deviceId).get()).get(); |
| |
| piTranslationService = handler().get(PiTranslationService.class); |
| |
| return true; |
| } |
| |
| /** |
| * Create a P4Runtime client for this device. Returns true if the operation was successful, false otherwise. |
| * |
| * @return true if successful, false otherwise |
| */ |
| protected boolean createClient() { |
| deviceId = handler().data().deviceId(); |
| controller = handler().get(P4RuntimeController.class); |
| |
| String serverAddr = this.data().value(P4RUNTIME_SERVER_ADDR_KEY); |
| String serverPortString = this.data().value(P4RUNTIME_SERVER_PORT_KEY); |
| String p4DeviceIdString = this.data().value(P4RUNTIME_DEVICE_ID_KEY); |
| |
| if (serverAddr == null || serverPortString == null || p4DeviceIdString == null) { |
| log.warn("Unable to create client for {}, missing driver data key (required is {}, {}, and {})", |
| deviceId, P4RUNTIME_SERVER_ADDR_KEY, P4RUNTIME_SERVER_PORT_KEY, P4RUNTIME_DEVICE_ID_KEY); |
| return false; |
| } |
| |
| ManagedChannelBuilder channelBuilder = NettyChannelBuilder |
| .forAddress(serverAddr, Integer.valueOf(serverPortString)) |
| .usePlaintext(true); |
| |
| if (!controller.createClient(deviceId, Long.parseUnsignedLong(p4DeviceIdString), channelBuilder)) { |
| log.warn("Unable to create client for {}, aborting operation", deviceId); |
| return false; |
| } |
| |
| return true; |
| } |
| } |