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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.xnf.impl
import arrow.core.Either
import arrow.core.Some
import arrow.core.Try
import arrow.core.fix
import arrow.effects.IO
import arrow.instances.either.monad.monad
import arrow.typeclasses.binding
import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.VesHvClient
import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
import org.onap.dcae.collectors.veshv.ves.message.generator.api.ParsingError
import java.io.InputStream
import javax.json.Json
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since August 2018
*/
class XnfSimulator(
private val vesClient: VesHvClient,
private val messageGenerator: MessageGenerator,
private val messageParametersParser: MessageParametersParser = MessageParametersParser.INSTANCE) {
fun startSimulation(messageParameters: InputStream): Either<ParsingError, IO<Unit>> =
Either.monad<ParsingError>().binding {
val json = parseJsonArray(messageParameters).bind()
val parsed = messageParametersParser.parse(json).bind()
val generatedMessages = messageGenerator.createMessageFlux(parsed)
vesClient.sendIo(generatedMessages)
}.fix()
private fun parseJsonArray(jsonStream: InputStream) =
Try {
Json.createReader(jsonStream).readArray()
}.toEither().mapLeft { ParsingError("failed to parse JSON", Some(it)) }
}
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