sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/impl/adapters/kafka/KafkaSenderOptionsFactory.kt

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * dcaegen2-collectors-veshv
   4  * ================================================================================
   5  * Copyright (C) 2019 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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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=========================================================
  19  */
  20 package org.onap.dcae.collectors.veshv.impl.adapters.kafka
  21
  22 import org.apache.kafka.clients.CommonClientConfigs
  23 import org.apache.kafka.clients.producer.ProducerConfig
  24 import org.apache.kafka.common.config.SaslConfigs
  25 import org.apache.kafka.common.security.auth.SecurityProtocol
  26 import org.apache.kafka.common.security.plain.internals.PlainSaslServer
  27 import org.jetbrains.annotations.Nullable
  28 import org.onap.dcae.collectors.veshv.domain.VesMessage
  29 import org.onap.dcae.collectors.veshv.utils.applyIf
  30 import org.onap.dcaegen2.services.sdk.model.streams.AafCredentials
  31 import org.onap.dcaegen2.services.sdk.model.streams.dmaap.KafkaSink
  32 import org.onap.ves.VesEventOuterClass.CommonEventHeader
  33 import reactor.kafka.sender.SenderOptions
  34
  35 internal object KafkaSenderOptionsFactory {
  36
  37     private const val MAXIMUM_REQUEST_SIZE_MULTIPLIER = 1.2f
  38     private const val BUFFER_MEMORY_MULTIPLIER = 32
  39     private const val MINIMUM_BUFFER_MEMORY = 32 * 1024 * 1024
  40
  41     private const val LOGIN_MODULE_CLASS = "org.apache.kafka.common.security.plain.PlainLoginModule"
  42     private val SASL_PLAINTEXT = (SecurityProtocol.SASL_PLAINTEXT as Enum<SecurityProtocol>).name
  43
  44     fun createSenderOptions(kafkaSink: KafkaSink): SenderOptions<CommonEventHeader, VesMessage> =
  45             SenderOptions.create<CommonEventHeader, VesMessage>()
  46                     .producerProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaSink.bootstrapServers())
  47                     .producerProperty(ProducerConfig.MAX_REQUEST_SIZE_CONFIG, maxRequestSize(kafkaSink))
  48                     .producerProperty(ProducerConfig.BUFFER_MEMORY_CONFIG, bufferMemory(kafkaSink))
  49                     .producerProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, ProtobufSerializer::class.java)
  50                     .producerProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, VesMessageSerializer::class.java)
  51                     .producerProperty(ProducerConfig.MAX_IN_FLIGHT_REQUESTS_PER_CONNECTION, 1)
  52                     .producerProperty(ProducerConfig.RETRIES_CONFIG, 1)
  53                     .producerProperty(ProducerConfig.ACKS_CONFIG, "1")
  54                     .stopOnError(false)
  55                     .applyIf(kafkaSink.aafCredentials() != null) {
  56                         producerProperty(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, SASL_PLAINTEXT)
  57                                 .producerProperty(SaslConfigs.SASL_MECHANISM, PlainSaslServer.PLAIN_MECHANISM)
  58                                 .producerProperty(SaslConfigs.SASL_JAAS_CONFIG, jaasConfig(kafkaSink.aafCredentials()!!))
  59                     }
  60
  61     private fun jaasConfig(aafCredentials: AafCredentials) =
  62             """$LOGIN_MODULE_CLASS required username="${aafCredentials.username().jaasEscape()}" password="${aafCredentials.password().jaasEscape()}";"""
  63
  64     private fun String?.jaasEscape() = this?.replace("\"", "\\\"")
  65
  66     private fun maxRequestSize(kafkaSink: KafkaSink) =
  67             (MAXIMUM_REQUEST_SIZE_MULTIPLIER * kafkaSink.maxPayloadSizeBytes()).toInt()
  68
  69     private fun bufferMemory(kafkaSink: KafkaSink) =
  70             Integer.max(MINIMUM_BUFFER_MEMORY, BUFFER_MEMORY_MULTIPLIER * kafkaSink.maxPayloadSizeBytes())
  71
  72 }