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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.tests.fakes
import org.onap.dcae.collectors.veshv.boundary.Sink
import org.onap.dcae.collectors.veshv.model.ConsumedMessage
import org.onap.dcae.collectors.veshv.model.FailedToConsumeMessage
import org.onap.dcae.collectors.veshv.model.MessageDropCause
import org.onap.dcae.collectors.veshv.domain.RoutedMessage
import org.onap.dcae.collectors.veshv.model.SuccessfullyConsumedMessage
import org.reactivestreams.Publisher
import reactor.core.publisher.Flux
import reactor.core.publisher.Mono
import java.time.Duration
import java.util.*
import java.util.concurrent.ConcurrentLinkedDeque
import java.util.concurrent.atomic.AtomicBoolean
import java.util.concurrent.atomic.AtomicLong
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since May 2018
*/
class StoringSink : Sink {
private val sent: Deque<RoutedMessage> = ConcurrentLinkedDeque()
private val active = AtomicBoolean(true)
val closed get() = !active.get()
val sentMessages: List<RoutedMessage>
get() = sent.toList()
override fun send(messages: Flux<RoutedMessage>): Flux<ConsumedMessage> {
return messages.doOnNext(sent::addLast).map(::SuccessfullyConsumedMessage)
}
override fun close(): Mono<Void> = Mono.fromRunnable {
active.set(false)
}
}
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since May 2018
*/
class CountingSink : Sink {
private val atomicCount = AtomicLong(0)
val count: Long
get() = atomicCount.get()
override fun send(messages: Flux<RoutedMessage>): Flux<ConsumedMessage> {
return messages.doOnNext {
atomicCount.incrementAndGet()
}.map(::SuccessfullyConsumedMessage)
}
}
open class ProcessingSink(private val transformer: (Flux<RoutedMessage>) -> Publisher<ConsumedMessage>) : Sink {
override fun send(messages: Flux<RoutedMessage>): Flux<ConsumedMessage> =
messages.transform(transformer)
}
class AlwaysSuccessfulSink : ProcessingSink({ it.map(::SuccessfullyConsumedMessage) })
class AlwaysFailingSink : ProcessingSink({ stream ->
stream.map { FailedToConsumeMessage(it, null, MessageDropCause.KAFKA_FAILURE) }
})
class DelayingSink(delay: Duration) : ProcessingSink({ it.delayElements(delay).map(::SuccessfullyConsumedMessage) })
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