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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.effects.IO
import kotlinx.coroutines.asCoroutineDispatcher
import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription.BUSY
import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription.IDLE
import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
import org.onap.dcae.collectors.veshv.simulators.xnf.impl.adapters.XnfApiServer
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import java.util.*
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.Executor
import java.util.concurrent.Executors
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since August 2018
*/
class OngoingSimulations(executor: Executor = Executors.newCachedThreadPool(),
private val healthState: HealthState = HealthState.INSTANCE) {
private val asyncSimulationContext = executor.asCoroutineDispatcher()
private val simulations = ConcurrentHashMap<UUID, Status>()
fun startAsynchronousSimulation(simulationIo: IO<Unit>): UUID {
val id = UUID.randomUUID()
simulations[id] = StatusOngoing
updateHealthState()
simulationIo.continueOn(asyncSimulationContext).unsafeRunAsync { result ->
result.fold(
{ err ->
logger.withWarn { log("Error", err) }
simulations[id] = StatusFailure(err)
},
{
logger.info { "Finished sending messages" }
simulations[id] = StatusSuccess
}
).also { updateHealthState() }
}
return id
}
private fun updateHealthState() = healthState.changeState(currentState())
private fun currentState() = if (isAnySimulationPending()) BUSY else IDLE
internal fun isAnySimulationPending() = simulations.any {
status(it.key) is StatusOngoing
}
fun status(id: UUID) = simulations.getOrDefault(id, StatusNotFound)
internal fun clear() = simulations.clear()
companion object {
private val logger = Logger(XnfApiServer::class)
}
}
sealed class Status(val message: String) {
override fun toString() = this::class.simpleName ?: "null"
}
object StatusNotFound : Status("not found")
object StatusOngoing : Status("ongoing")
object StatusSuccess : Status("success")
data class StatusFailure(val cause: Throwable) : Status("Error ${cause.message}")
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