Jian Li | 6803ccd | 2018-06-08 09:26:09 +0900 | [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 | package org.onosproject.openstacktelemetry.impl; |
| 17 | |
| 18 | import org.apache.felix.scr.annotations.Activate; |
| 19 | import org.apache.felix.scr.annotations.Component; |
| 20 | import org.apache.felix.scr.annotations.Deactivate; |
| 21 | import org.apache.felix.scr.annotations.Service; |
| 22 | import org.onosproject.openstacktelemetry.api.RestTelemetryAdminService; |
| 23 | import org.onosproject.openstacktelemetry.api.config.RestTelemetryConfig; |
| 24 | import org.onosproject.openstacktelemetry.api.config.TelemetryConfig; |
| 25 | import org.slf4j.Logger; |
| 26 | import org.slf4j.LoggerFactory; |
| 27 | |
| 28 | import javax.ws.rs.client.Client; |
| 29 | import javax.ws.rs.client.ClientBuilder; |
| 30 | import javax.ws.rs.client.Entity; |
| 31 | import javax.ws.rs.client.WebTarget; |
| 32 | import javax.ws.rs.core.Response; |
| 33 | |
| 34 | /** |
| 35 | * REST telemetry manager. |
| 36 | */ |
| 37 | @Component(immediate = true) |
| 38 | @Service |
| 39 | public class RestTelemetryManager implements RestTelemetryAdminService { |
| 40 | |
| 41 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 42 | |
| 43 | private static final String PROTOCOL = "http"; |
| 44 | private static final String POST_METHOD = "POST"; |
| 45 | private static final String GET_METHOD = "GET"; |
| 46 | |
| 47 | private WebTarget target = null; |
| 48 | private RestTelemetryConfig restConfig = null; |
| 49 | |
| 50 | @Activate |
| 51 | protected void activate() { |
| 52 | log.info("Started"); |
| 53 | } |
| 54 | |
| 55 | @Deactivate |
| 56 | protected void deactivate() { |
| 57 | stop(); |
| 58 | log.info("Stopped"); |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public void start(TelemetryConfig config) { |
| 63 | if (target != null) { |
| 64 | log.info("REST producer has already been started"); |
| 65 | return; |
| 66 | } |
| 67 | |
| 68 | restConfig = (RestTelemetryConfig) config; |
| 69 | |
| 70 | StringBuilder restServerBuilder = new StringBuilder(); |
| 71 | restServerBuilder.append(PROTOCOL); |
| 72 | restServerBuilder.append(":"); |
| 73 | restServerBuilder.append("//"); |
| 74 | restServerBuilder.append(restConfig.address()); |
| 75 | restServerBuilder.append(":"); |
| 76 | restServerBuilder.append(restConfig.port()); |
| 77 | restServerBuilder.append("/"); |
| 78 | |
| 79 | Client client = ClientBuilder.newBuilder().build(); |
| 80 | |
| 81 | target = client.target(restServerBuilder.toString()).path(restConfig.endpoint()); |
| 82 | |
| 83 | log.info("REST producer has Started"); |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public void stop() { |
| 88 | if (target != null) { |
| 89 | target = null; |
| 90 | } |
| 91 | |
| 92 | log.info("REST producer has Stopped"); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public void restart(TelemetryConfig config) { |
| 97 | stop(); |
| 98 | start(config); |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public Response publish(String endpoint, String method, String record) { |
| 103 | // TODO: need to find a way to invoke REST endpoint using target |
| 104 | return null; |
| 105 | } |
| 106 | |
| 107 | @Override |
| 108 | public Response publish(String method, String record) { |
| 109 | switch (method) { |
| 110 | case POST_METHOD: |
| 111 | return target.request(restConfig.requestMediaType()) |
| 112 | .post(Entity.json(record)); |
| 113 | case GET_METHOD: |
| 114 | return target.request(restConfig.requestMediaType()).get(); |
| 115 | default: |
| 116 | return null; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | @Override |
| 121 | public Response publish(String record) { |
| 122 | switch (restConfig.method()) { |
| 123 | case POST_METHOD: |
| 124 | return target.request(restConfig.requestMediaType()) |
| 125 | .post(Entity.json(record)); |
| 126 | case GET_METHOD: |
| 127 | return target.request(restConfig.requestMediaType()).get(); |
| 128 | default: |
| 129 | return null; |
| 130 | } |
| 131 | } |
| 132 | } |