2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018 NOKIA
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.dcae.collectors.veshv.impl.adapters.kafka
22 import org.apache.kafka.clients.producer.ProducerConfig.ACKS_CONFIG
23 import org.apache.kafka.clients.producer.ProducerConfig.BOOTSTRAP_SERVERS_CONFIG
24 import org.apache.kafka.clients.producer.ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG
25 import org.apache.kafka.clients.producer.ProducerConfig.MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION
26 import org.apache.kafka.clients.producer.ProducerConfig.RETRIES_CONFIG
27 import org.apache.kafka.clients.producer.ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG
28 import org.apache.kafka.clients.producer.ProducerConfig.MAX_REQUEST_SIZE_CONFIG
29 import org.apache.kafka.clients.producer.ProducerConfig.BUFFER_MEMORY_CONFIG
30 import org.onap.dcae.collectors.veshv.boundary.SinkProvider
31 import org.onap.dcae.collectors.veshv.model.ClientContext
32 import org.onap.dcae.collectors.veshv.model.KafkaConfiguration
33 import org.onap.dcae.collectors.veshv.model.VesMessage
34 import org.onap.ves.VesEventOuterClass.CommonEventHeader
35 import reactor.kafka.sender.KafkaSender
36 import reactor.kafka.sender.SenderOptions
37 import java.lang.Integer.max
40 * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
43 internal class KafkaSinkProvider internal constructor(
44 private val kafkaSender: KafkaSender<CommonEventHeader, VesMessage>) : SinkProvider {
46 constructor(config: KafkaConfiguration) : this(constructKafkaSender(config))
48 override fun invoke(ctx: ClientContext) = KafkaSink(kafkaSender, ctx)
51 private const val MAXIMUM_REQUEST_SIZE_MULTIPLIER = 1.2f
52 private const val BUFFER_MEMORY_MULTIPLIER = 32
53 private const val MINIMUM_BUFFER_MEMORY = 32 * 1024 * 1024
54 private fun constructKafkaSender(config: KafkaConfiguration) =
55 KafkaSender.create(constructSenderOptions(config))
57 private fun constructSenderOptions(config: KafkaConfiguration) =
58 SenderOptions.create<CommonEventHeader, VesMessage>()
59 .producerProperty(BOOTSTRAP_SERVERS_CONFIG, config.bootstrapServers)
60 .producerProperty(MAX_REQUEST_SIZE_CONFIG, maxRequestSize(config))
61 .producerProperty(BUFFER_MEMORY_CONFIG, bufferMemory(config))
62 .producerProperty(KEY_SERIALIZER_CLASS_CONFIG, ProtobufSerializer::class.java)
63 .producerProperty(VALUE_SERIALIZER_CLASS_CONFIG, VesMessageSerializer::class.java)
64 .producerProperty(MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION, 1)
65 .producerProperty(RETRIES_CONFIG, 1)
66 .producerProperty(ACKS_CONFIG, "1")
69 private fun maxRequestSize(config: KafkaConfiguration) =
70 (MAXIMUM_REQUEST_SIZE_MULTIPLIER * config.maximalRequestSizeBytes).toInt()
72 private fun bufferMemory(config: KafkaConfiguration) =
73 max(MINIMUM_BUFFER_MEMORY, BUFFER_MEMORY_MULTIPLIER * config.maximalRequestSizeBytes)