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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018 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.dcaeapp.impl.adapters
import arrow.effects.IO
import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.DcaeAppSimulator
import org.onap.dcae.collectors.veshv.utils.http.HttpConstants
import org.onap.dcae.collectors.veshv.utils.http.HttpStatus
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.sendOrError
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import ratpack.handling.Chain
import ratpack.server.RatpackServer
import ratpack.server.ServerConfig
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since May 2018
*/
class DcaeAppApiServer(private val simulator: DcaeAppSimulator) {
private val responseValid by lazy {
Responses.statusResponse(
name = "valid",
message = VALID_RESPONSE_MESSAGE
)
}
private val responseInvalid by lazy {
Responses.statusResponse(
name = "invalid",
message = INVALID_RESPONSE_MESSAGE,
httpStatus = HttpStatus.BAD_REQUEST
)
}
fun start(port: Int, kafkaTopics: Set<String>): IO<RatpackServer> =
simulator.listenToTopics(kafkaTopics).map {
RatpackServer.start { server ->
server.serverConfig(ServerConfig.embedded().port(port))
.handlers(::setupHandlers)
}
}
private fun setupHandlers(chain: Chain) {
chain
.put("configuration/topics") { ctx ->
ctx.request.body.then { body ->
val operation = simulator.listenToTopics(body.text)
ctx.response.sendOrError(operation)
}
}
.delete("messages") { ctx ->
ctx.response.contentType(CONTENT_TEXT)
logger.info { "Resetting simulator state" }
ctx.response.sendOrError(simulator.resetState())
}
.get("messages/all/count") { ctx ->
logger.info { "Processing request for count of received messages" }
simulator.state().fold(
{
ctx.response.status(HttpConstants.STATUS_NOT_FOUND)
logger.warn { "Error - number of messages could not be specified" }
},
{
logger.info { "Returned number of received messages: ${it.messagesCount}" }
ctx.response
.contentType(CONTENT_TEXT)
.send(it.messagesCount.toString())
})
}
.post("messages/all/validate") { ctx ->
ctx.request.body.then { body ->
logger.info { "Processing request for message validation" }
val response = simulator.validate(body.inputStream)
.map { isValid ->
if (isValid) {
logger.info { "Comparison result: $VALID_RESPONSE_MESSAGE" }
responseValid
} else {
logger.info { "Comparison result: $INVALID_RESPONSE_MESSAGE" }
responseInvalid
}
}
ctx.response.sendAndHandleErrors(response)
}
}
.get("healthcheck") { ctx ->
val status = HttpConstants.STATUS_OK
logger.info { "Healthcheck OK, returning status: $status" }
ctx.response.status(status).send()
}
}
companion object {
private const val CONTENT_TEXT = "text/plain"
private const val VALID_RESPONSE_MESSAGE = "validation passed"
private const val INVALID_RESPONSE_MESSAGE = "consumed messages don't match data from validation request"
private val logger = Logger(DcaeAppApiServer::class)
}
}
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