2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018 NOKIA
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.dcae.collectors.veshv.simulators.xnf.impl
22 import arrow.effects.IO
23 import org.onap.dcae.collectors.veshv.utils.logging.Logger
24 import org.onap.dcae.collectors.veshv.utils.messages.MessageParametersParser
25 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
26 import ratpack.handling.Chain
27 import ratpack.handling.Context
28 import ratpack.server.RatpackServer
29 import ratpack.server.ServerConfig
30 import reactor.core.scheduler.Schedulers
31 import javax.json.Json
34 * @author Jakub Dudycz <jakub.dudycz@nokia.com>
37 internal class HttpServer(private val vesClient: XnfSimulator,
38 private val messageParametersParser: MessageParametersParser = MessageParametersParser()) {
40 fun start(port: Int): IO<RatpackServer> = IO {
41 RatpackServer.start { server ->
42 server.serverConfig(ServerConfig.embedded().port(port))
43 .handlers(this::configureHandlers)
47 private fun configureHandlers(chain: Chain) {
49 .post("simulator/sync") { ctx ->
51 .map { Json.createReader(it.inputStream).readArray() }
52 .map { messageParametersParser.parse(it) }
53 .map { MessageGenerator.INSTANCE.createMessageFlux(it) }
54 .map { vesClient.sendIo(it) }
55 .map { it.unsafeRunSync() }
56 .onError { handleException(it, ctx) }
57 .then { sendAcceptedResponse(ctx) }
59 .post("simulator/async") { ctx ->
61 .map { Json.createReader(it.inputStream).readArray() }
62 .map { messageParametersParser.parse(it) }
63 .map { MessageGenerator.INSTANCE.createMessageFlux(it) }
64 .map { vesClient.sendRx(it) }
65 .map { it.subscribeOn(Schedulers.elastic()).subscribe() }
66 .onError { handleException(it, ctx) }
67 .then { sendAcceptedResponse(ctx) }
71 private fun sendAcceptedResponse(ctx: Context) {
74 .send(CONTENT_TYPE_APPLICATION_JSON, Json.createObjectBuilder()
75 .add("response", "Request accepted")
80 private fun handleException(t: Throwable, ctx: Context) {
81 logger.warn("Failed to process the request - ${t.localizedMessage}")
82 logger.debug("Exception thrown when processing the request", t)
84 .status(STATUS_BAD_REQUEST)
85 .send(CONTENT_TYPE_APPLICATION_JSON, Json.createObjectBuilder()
86 .add("response", "Request was not accepted")
87 .add("exception", t.localizedMessage)
93 private val logger = Logger(HttpServer::class)
94 const val STATUS_OK = 200
95 const val STATUS_BAD_REQUEST = 400
96 const val CONTENT_TYPE_APPLICATION_JSON = "application/json"