sources/hv-collector-dcae-app-simulator/src/main/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/main.kt

   1 /*
   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
  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.simulators.dcaeapp
  21
  22 import arrow.effects.IO
  23 import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config.ArgDcaeAppSimConfiguration
  24 import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.config.DcaeAppSimConfiguration
  25 import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.ConsumerFactory
  26 import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.DcaeAppSimulator
  27 import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.MessageStreamValidation
  28 import org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl.adapters.DcaeAppApiServer
  29 import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
  30 import org.onap.dcae.collectors.veshv.utils.arrow.unsafeRunEitherSync
  31 import org.onap.dcae.collectors.veshv.utils.arrow.unit
  32 import org.onap.dcae.collectors.veshv.utils.commandline.handleWrongArgumentErrorCurried
  33 import org.onap.dcae.collectors.veshv.utils.logging.Logger
  34 import org.onap.dcae.collectors.veshv.ves.message.generator.factory.MessageGeneratorFactory
  35
  36 private const val PACKAGE_NAME = "org.onap.dcae.collectors.veshv.simulators.dcaeapp"
  37 private val logger = Logger(PACKAGE_NAME)
  38 const val PROGRAM_NAME = "java $PACKAGE_NAME.MainKt"
  39
  40 fun main(args: Array<String>) =
  41         ArgDcaeAppSimConfiguration().parse(args)
  42                 .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
  43                 .map(::startApp)
  44                 .unsafeRunEitherSync(
  45                         { ex ->
  46                             logger.error("Failed to start a server", ex)
  47                             ExitFailure(1)
  48                         },
  49                         {
  50                             logger.info("Started DCAE-APP Simulator API server")
  51                         }
  52                 )
  53
  54
  55 private fun startApp(config: DcaeAppSimConfiguration): IO<Unit> {
  56     logger.info("Using configuration: $config")
  57     val consumerFactory = ConsumerFactory(config.kafkaBootstrapServers)
  58     val messageStreamValidation = MessageStreamValidation(MessageGeneratorFactory.create(config.maxPayloadSizeBytes))
  59     return DcaeAppApiServer(DcaeAppSimulator(consumerFactory, messageStreamValidation))
  60             .start(config.apiPort, config.kafkaTopics)
  61             .unit()
  62 }