Esin Karaman | 971fb7f | 2017-12-28 13:44:52 +0000 | [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.bmv2; |
| 18 | |
| 19 | import org.onosproject.drivers.bmv2.api.Bmv2PreController; |
| 20 | import org.onosproject.drivers.p4runtime.P4RuntimeHandshaker; |
| 21 | import org.onosproject.net.DeviceId; |
| 22 | import org.slf4j.Logger; |
| 23 | import org.slf4j.LoggerFactory; |
| 24 | |
| 25 | import java.util.concurrent.CompletableFuture; |
| 26 | |
| 27 | public class Bmv2DeviceHandshaker extends P4RuntimeHandshaker { |
| 28 | |
| 29 | public static final String THRIFT_SERVER_ADDRESS_KEY = "bmv2-thrift_ip"; |
| 30 | public static final String THRIFT_SERVER_PORT_KEY = "bmv2-thrift_port"; |
| 31 | protected final Logger log = LoggerFactory.getLogger(getClass()); |
| 32 | |
| 33 | @Override |
| 34 | public CompletableFuture<Boolean> connect() { |
| 35 | //connect to both GRPC and Thrift servers in parallel |
| 36 | CompletableFuture<Boolean> futureP4Runtime = super.connect(); |
| 37 | CompletableFuture<Boolean> futureBmv2Pre = connectToBmv2Pre(); |
| 38 | //combine futures and asses the overall result by using P4Runtime connection status |
| 39 | return futureP4Runtime.thenCombine(futureBmv2Pre, |
| 40 | (p4RuntimeConnected, bmv2PreConnected) -> p4RuntimeConnected); |
| 41 | } |
| 42 | |
| 43 | @Override |
| 44 | public CompletableFuture<Boolean> disconnect() { |
| 45 | //disconnect from both GRPC and Thrift servers in parallel |
| 46 | CompletableFuture<Boolean> futureP4Runtime = super.disconnect(); |
| 47 | CompletableFuture<Boolean> futureBmv2Pre = disconnectFromBmv2Pre(); |
| 48 | //combine futures and asses the overall result by using P4Runtime disconnection status |
| 49 | return futureP4Runtime.thenCombine(futureBmv2Pre, |
| 50 | (p4RuntimeDisconnected, bmv2PreDisconnected) -> p4RuntimeDisconnected); |
| 51 | } |
| 52 | |
| 53 | private CompletableFuture<Boolean> connectToBmv2Pre() { |
| 54 | return CompletableFuture.supplyAsync(this::createPreClient); |
| 55 | } |
| 56 | |
| 57 | private CompletableFuture<Boolean> disconnectFromBmv2Pre() { |
| 58 | return CompletableFuture.supplyAsync(() -> { |
| 59 | removePreClient(); |
| 60 | return true; |
| 61 | }); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Creates a BMv2 PRE client for this device. |
| 66 | * |
| 67 | * @return true if successful; false otherwise |
| 68 | */ |
| 69 | private boolean createPreClient() { |
| 70 | DeviceId deviceId = handler().data().deviceId(); |
| 71 | |
| 72 | String serverAddress = data().value(THRIFT_SERVER_ADDRESS_KEY); |
| 73 | String serverPortString = data().value(THRIFT_SERVER_PORT_KEY); |
| 74 | |
| 75 | if (serverAddress == null || serverPortString == null) { |
| 76 | log.warn("Unable to create PRE client for {}, missing driver data key (required is {}, and {})", |
| 77 | deviceId, THRIFT_SERVER_ADDRESS_KEY, THRIFT_SERVER_PORT_KEY); |
| 78 | return false; |
| 79 | } |
| 80 | Bmv2PreController bmv2PreController = handler().get(Bmv2PreController.class); |
| 81 | try { |
| 82 | return bmv2PreController.createPreClient(deviceId, |
| 83 | serverAddress, |
| 84 | Integer.parseUnsignedInt(serverPortString)); |
| 85 | } catch (RuntimeException e) { |
| 86 | log.warn("Unable to create BMv2 PRE client for {} due to {}", deviceId, e.toString()); |
| 87 | return false; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | private void removePreClient() { |
| 92 | DeviceId deviceId = handler().data().deviceId(); |
| 93 | handler().get(Bmv2PreController.class).removePreClient(deviceId); |
| 94 | } |
| 95 | } |