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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 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.utils.http
import arrow.core.Either
import arrow.effects.IO
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import reactor.core.publisher.Mono
import reactor.netty.NettyOutbound
import reactor.netty.http.server.HttpServerResponse
import javax.json.Json
private val logger = Logger("org.onap.dcae.collectors.veshv.utils.http.netty")
fun HttpServerResponse.sendOrError(action: IO<Unit>): NettyOutbound =
sendAndHandleErrors(action.map {
Response(
HttpStatus.OK,
Content(
ContentType.JSON,
Json.createObjectBuilder().add("response", "Request accepted").build()
)
)
})
fun HttpServerResponse.sendAndHandleErrors(response: IO<Response>): NettyOutbound =
response.attempt().unsafeRunSync().fold(
{ err ->
logger.withWarn { log("Error occurred. Sending .", err) }
val message = err.message
sendResponse(errorResponse(message))
},
{
sendResponse(it)
}
)
fun <A> HttpServerResponse.sendEitherErrorOrResponse(response: Either<A, Response>): NettyOutbound =
when (response) {
is Either.Left -> sendResponse(errorResponse(response.a.toString()))
is Either.Right -> sendAndHandleErrors(IO.just(response.b))
}
private fun HttpServerResponse.sendResponse(response: Response): NettyOutbound {
val respWithStatus = status(response.status.number)
val responseContent = response.content
return respWithStatus.sendString(Mono.just(responseContent.serializer.run { responseContent.value.show() }))
}
private fun errorResponse(message: String?): Response =
Response(
HttpStatus.INTERNAL_SERVER_ERROR,
Content(
ContentType.JSON,
Json.createObjectBuilder().add("error", message).build()
)
)
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