diff options
Diffstat (limited to 'sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt')
-rw-r--r-- | sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt new file mode 100644 index 00000000..a0c22418 --- /dev/null +++ b/sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSink.kt @@ -0,0 +1,82 @@ +/* + * ============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.impl.adapters.kafka + +import org.onap.dcae.collectors.veshv.boundary.Sink +import org.onap.dcae.collectors.veshv.model.RoutedMessage +import org.onap.dcae.collectors.veshv.model.VesMessage +import org.onap.dcae.collectors.veshv.utils.logging.Logger +import org.onap.ves.VesEventOuterClass.CommonEventHeader +import reactor.core.publisher.Flux +import reactor.kafka.sender.KafkaSender +import reactor.kafka.sender.SenderRecord +import reactor.kafka.sender.SenderResult +import java.util.concurrent.atomic.AtomicLong + +/** + * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com> + * @since May 2018 + */ +internal class KafkaSink(private val sender: KafkaSender<CommonEventHeader, VesMessage>) : Sink { + private val sentMessages = AtomicLong(0) + + override fun send(messages: Flux<RoutedMessage>): Flux<RoutedMessage> { + val records = messages.map(this::vesToKafkaRecord) + val result = sender.send(records) + .doOnNext(::logException) + .filter(::isSuccessful) + .map { it.correlationMetadata() } + + return if (logger.traceEnabled) { + result.doOnNext(::logSentMessage) + } else { + result + } + } + + private fun vesToKafkaRecord(msg: RoutedMessage): SenderRecord<CommonEventHeader, VesMessage, RoutedMessage> { + return SenderRecord.create( + msg.topic, + msg.partition, + System.currentTimeMillis(), + msg.message.header, + msg.message, + msg) + } + + private fun logException(senderResult: SenderResult<out Any>) { + if (senderResult.exception() != null) { + logger.warn(senderResult.exception()) { "Failed to send message to Kafka" } + } + } + + private fun logSentMessage(sentMsg: RoutedMessage) { + logger.trace { + val msgNum = sentMessages.incrementAndGet() + "Message #$msgNum has been sent to ${sentMsg.topic}:${sentMsg.partition}" + } + } + + private fun isSuccessful(senderResult: SenderResult<out Any>) = senderResult.exception() == null + + companion object { + val logger = Logger(KafkaSink::class) + } +} |