| /* |
| * 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 org.onosproject.net.DeviceId; |
| import org.onosproject.net.MastershipRole; |
| import org.onosproject.net.device.DeviceAgentListener; |
| import org.onosproject.net.device.DeviceHandshaker; |
| import org.onosproject.p4runtime.api.P4RuntimeClient; |
| import org.onosproject.p4runtime.api.P4RuntimeController; |
| |
| import java.util.concurrent.CompletableFuture; |
| |
| /** |
| * Implementation of DeviceHandshaker for P4Runtime. |
| */ |
| public class P4RuntimeHandshaker extends AbstractP4RuntimeHandlerBehaviour implements DeviceHandshaker { |
| |
| @Override |
| public CompletableFuture<Boolean> connect() { |
| return CompletableFuture |
| .supplyAsync(super::createClient) |
| .thenComposeAsync(client -> { |
| if (client == null) { |
| return CompletableFuture.completedFuture(false); |
| } |
| return client.start(); |
| }); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> disconnect() { |
| final P4RuntimeController controller = handler().get(P4RuntimeController.class); |
| final DeviceId deviceId = handler().data().deviceId(); |
| final P4RuntimeClient client = controller.getClient(deviceId); |
| if (client == null) { |
| return CompletableFuture.completedFuture(true); |
| } |
| return client.shutdown() |
| .thenApplyAsync(v -> { |
| controller.removeClient(deviceId); |
| return true; |
| }); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> isReachable() { |
| return CompletableFuture.supplyAsync(() -> handler() |
| .get(P4RuntimeController.class) |
| .isReachable(handler().data().deviceId()) |
| ); |
| } |
| |
| @Override |
| public void roleChanged(MastershipRole newRole) { |
| if (setupBehaviour() && newRole.equals(MastershipRole.MASTER)) { |
| client.becomeMaster().thenAcceptAsync(result -> { |
| if (!result) { |
| log.error("Unable to notify mastership role {} to {}", |
| newRole, deviceId); |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void addDeviceAgentListener(DeviceAgentListener listener) { |
| // Don't use controller/deviceId class variables as they might be uninitialized. |
| handler().get(P4RuntimeController.class) |
| .addDeviceAgentListener(data().deviceId(), listener); |
| } |
| |
| @Override |
| public void removeDeviceAgentListener(DeviceAgentListener listener) { |
| // Don't use controller/deviceId class variable as they might be uninitialized. |
| handler().get(P4RuntimeController.class) |
| .removeDeviceAgentListener(data().deviceId(), listener); |
| } |
| } |