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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.ves.message.generator.api
import reactor.core.publisher.Flux
import reactor.core.publisher.Mono
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since June 2018
*/
abstract class MessageGenerator<K : MessageParameters, T> {
abstract fun createMessageFlux(parameters: K): Flux<T>
protected fun repeatMessage(message: Mono<T>, amount: Long): Flux<T> = when {
amount < 0 -> repeatForever(message)
amount == 0L -> emptyMessageStream()
else -> repeatNTimes(message, amount)
}
private fun repeatForever(message: Mono<T>) = message.repeat()
private fun emptyMessageStream() = Flux.empty<T>()
private fun repeatNTimes(message: Mono<T>, amount: Long) = message.repeat(amount - 1)
}
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