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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018-2019 NOKIA
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters
import arrow.core.Either
import arrow.effects.IO
import org.onap.dcae.collectors.veshv.simulators.xnf.impl.OngoingSimulations
import org.onap.dcae.collectors.veshv.simulators.xnf.impl.XnfSimulator
import org.onap.dcae.collectors.veshv.utils.NettyServerHandle
import org.onap.dcae.collectors.veshv.utils.ServerHandle
import org.onap.dcae.collectors.veshv.utils.http.Response
import org.onap.dcae.collectors.veshv.utils.http.Responses
import org.onap.dcae.collectors.veshv.utils.http.sendAndHandleErrors
import org.onap.dcae.collectors.veshv.utils.http.sendEitherErrorOrResponse
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
import reactor.core.publisher.Mono
import reactor.netty.http.server.HttpServer
import reactor.netty.http.server.HttpServerRequest
import reactor.netty.http.server.HttpServerResponse
import reactor.netty.http.server.HttpServerRoutes
import java.io.InputStream
import java.net.InetSocketAddress
import java.util.*
/**
* @author Jakub Dudycz <jakub.dudycz@nokia.com>
* @since June 2018
*/
internal class XnfApiServer(
private val xnfSimulator: XnfSimulator,
private val ongoingSimulations: OngoingSimulations) {
fun start(socketAddress: InetSocketAddress): IO<ServerHandle> = IO {
HttpServer.create()
.host(socketAddress.hostName)
.port(socketAddress.port)
.route(::setRoutes)
.let { NettyServerHandle(it.bindNow()) }
}
private fun setRoutes(route: HttpServerRoutes) {
route
.post("/simulator", ::startSimulationHandler)
.post("/simulator/async", ::startSimulationHandler)
.get("/simulator/:id", ::simulatorStatusHandler)
}
private fun startSimulationHandler(req: HttpServerRequest, res: HttpServerResponse): Mono<Void> {
logger.info { "Attempting to start asynchronous scenario" }
return req.receive().aggregate().asInputStream()
.flatMap { body ->
val id = startSimulation(body)
when (id) {
is Either.Left -> logger.warn { "Failed to start scenario, ${id.a}" }
is Either.Right -> logger.info { "Scenario started, details: ${id.b}" }
}
res.sendEitherErrorOrResponse(id)
}
}
private fun startSimulation(body: InputStream): Either<ParsingError, Response> =
xnfSimulator.startSimulation(body)
.map(ongoingSimulations::startAsynchronousSimulation)
.map(Responses::acceptedResponse)
private fun simulatorStatusHandler(req: HttpServerRequest, res: HttpServerResponse): Mono<Void> {
logger.debug { "Checking task status" }
val id = UUID.fromString(req.param("id"))
logger.debug { "Checking status for id: $id" }
val status = ongoingSimulations.status(id)
val response = Responses.statusResponse(status.toString(), status.message)
logger.info { "Task $id status: $response" }
return res.sendAndHandleErrors(Mono.just(response))
}
companion object {
private val logger = Logger(XnfApiServer::class)
}
}
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