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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.impl.adapters.kafka
import org.onap.dcae.collectors.veshv.boundary.Sink
import org.onap.dcae.collectors.veshv.domain.RoutedMessage
import org.onap.dcae.collectors.veshv.domain.VesMessage
import org.onap.dcae.collectors.veshv.domain.logging.ClientContextLogging.withDebug
import org.onap.dcae.collectors.veshv.domain.logging.ClientContext
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.model.SuccessfullyConsumedMessage
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import org.onap.dcae.collectors.veshv.domain.logging.Marker
import org.onap.dcae.collectors.veshv.domain.logging.MarkerLogging.trace
import org.onap.dcae.collectors.veshv.domain.logging.MarkerLogging.warn
import org.onap.ves.VesEventOuterClass.CommonEventHeader
import reactor.core.publisher.Flux
import reactor.kafka.sender.KafkaSender
import reactor.kafka.sender.SenderRecord
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since May 2018
*/
internal class KafkaPublisher(private val sender: KafkaSender<CommonEventHeader, VesMessage>,
private val ctx: ClientContext) : Sink {
override fun send(messages: Flux<RoutedMessage>): Flux<ConsumedMessage> =
messages.map(::vesToKafkaRecord)
.compose { sender.send(it) }
.map {
val msg = it.correlationMetadata()
if (it.exception() == null) {
logger.trace(ctx::fullMdc, Marker.Invoke()) {
"Message sent to Kafka with metadata: ${it.recordMetadata()}"
}
SuccessfullyConsumedMessage(msg)
} else {
logger.warn(ctx::fullMdc, Marker.Invoke()) {
"Failed to send message to Kafka. Reason: ${it.exception().message}"
}
logger.withDebug(ctx) { log("Kafka send failure details", it.exception()) }
FailedToConsumeMessage(msg, it.exception(), MessageDropCause.KAFKA_FAILURE)
}
}
private fun vesToKafkaRecord(routed: RoutedMessage): SenderRecord<CommonEventHeader, VesMessage, RoutedMessage> =
SenderRecord.create(
routed.targetTopic,
routed.partition.orNull(),
FILL_TIMESTAMP_LATER,
routed.message.header,
routed.message,
routed)
companion object {
private val FILL_TIMESTAMP_LATER: Long? = null
private val logger = Logger(KafkaPublisher::class)
}
}
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