Yi Tseng | 5f7fef5 | 2018-11-05 11:30:47 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-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.drivers.gnmi; |
| 18 | |
| 19 | import org.onosproject.gnmi.api.GnmiClient; |
| 20 | import org.onosproject.gnmi.api.GnmiController; |
| 21 | import org.onosproject.net.DeviceId; |
| 22 | import org.onosproject.net.MastershipRole; |
| 23 | import org.onosproject.net.device.DeviceHandshaker; |
| 24 | |
| 25 | import java.util.concurrent.CompletableFuture; |
| 26 | |
| 27 | /** |
| 28 | * Implementation of DeviceHandshaker for gNMI. |
| 29 | */ |
| 30 | public class GnmiHandshaker extends AbstractGnmiHandlerBehaviour implements DeviceHandshaker { |
| 31 | |
| 32 | @Override |
| 33 | public CompletableFuture<Boolean> isReachable() { |
| 34 | return CompletableFuture |
| 35 | // gNMI requires a client to be created to |
| 36 | // check for reachability. |
| 37 | .supplyAsync(super::createClient) |
| 38 | .thenApplyAsync(client -> { |
| 39 | if (client == null) { |
| 40 | return false; |
| 41 | } |
| 42 | return handler() |
| 43 | .get(GnmiController.class) |
| 44 | .isReachable(handler().data().deviceId()); |
| 45 | }); |
| 46 | } |
| 47 | |
| 48 | @Override |
| 49 | public void roleChanged(MastershipRole newRole) { |
| 50 | throw new UnsupportedOperationException("Mastership operation not supported"); |
| 51 | } |
| 52 | |
| 53 | @Override |
| 54 | public MastershipRole getRole() { |
| 55 | throw new UnsupportedOperationException("Mastership operation not supported"); |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public CompletableFuture<Boolean> connect() { |
| 60 | return CompletableFuture |
| 61 | .supplyAsync(super::createClient) |
| 62 | .thenComposeAsync(client -> { |
| 63 | if (client == null) { |
| 64 | return CompletableFuture.completedFuture(false); |
| 65 | } |
| 66 | return CompletableFuture.completedFuture(true); |
| 67 | }); |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public boolean isConnected() { |
| 72 | final GnmiController controller = handler().get(GnmiController.class); |
| 73 | final DeviceId deviceId = handler().data().deviceId(); |
| 74 | final GnmiClient client = controller.getClient(deviceId); |
| 75 | |
| 76 | if (client == null) { |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | return getFutureWithDeadline(client.isServiceAvailable(), "getting availability", false); |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public CompletableFuture<Boolean> disconnect() { |
| 85 | final GnmiController controller = handler().get(GnmiController.class); |
| 86 | final DeviceId deviceId = handler().data().deviceId(); |
| 87 | final GnmiClient client = controller.getClient(deviceId); |
| 88 | if (client == null) { |
| 89 | return CompletableFuture.completedFuture(true); |
| 90 | } |
| 91 | return client.shutdown() |
| 92 | .thenApplyAsync(v -> { |
| 93 | controller.removeClient(deviceId); |
| 94 | return true; |
| 95 | }); |
| 96 | } |
| 97 | } |