gerrit.onap Code Review - dcaegen2/collectors/hv-ves.git/blob

   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.config.api
  21
  22 import org.onap.dcae.collectors.veshv.config.api.model.HvVesConfiguration
  23 import org.onap.dcae.collectors.veshv.config.api.model.MissingArgumentException
  24 import org.onap.dcae.collectors.veshv.config.impl.CbsConfigurationProvider
  25 import org.onap.dcae.collectors.veshv.config.impl.ConfigurationMerger
  26 import org.onap.dcae.collectors.veshv.config.impl.ConfigurationTransformer
  27 import org.onap.dcae.collectors.veshv.config.impl.ConfigurationValidator
  28 import org.onap.dcae.collectors.veshv.config.impl.HvVesCommandLineParser
  29 import org.onap.dcae.collectors.veshv.config.impl.JsonConfigurationParser
  30 import org.onap.dcae.collectors.veshv.config.impl.PartialConfiguration
  31 import org.onap.dcae.collectors.veshv.utils.arrow.throwOnLeft
  32 import org.onap.dcae.collectors.veshv.utils.logging.Logger
  33 import org.onap.dcae.collectors.veshv.utils.logging.MappedDiagnosticContext
  34 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClientFactory
  35 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.EnvProperties
  36 import reactor.core.publisher.Flux
  37 import reactor.core.publisher.Mono
  38
  39 class ConfigurationModule {
  40
  41     private val cmd = HvVesCommandLineParser()
  42     private val configParser = JsonConfigurationParser()
  43     private val configMerger = ConfigurationMerger()
  44     private val configValidator = ConfigurationValidator()
  45     private val configTransformer = ConfigurationTransformer()
  46
  47     fun healthCheckPort(args: Array<String>): Int = cmd.getHealthcheckPort(args)
  48
  49     fun hvVesConfigurationUpdates(args: Array<String>,
  50                                   configStateListener: ConfigurationStateListener,
  51                                   mdc: MappedDiagnosticContext): Flux<HvVesConfiguration> =
  52             Mono.just(cmd.getConfigurationFile(args))
  53                     .throwOnLeft(::MissingArgumentException)
  54                     .doOnNext { logger.info { "Using base configuration file: ${it.absolutePath}" } }
  55                     .map { it.reader().use(configParser::parse) }
  56                     .doOnNext { logger.info { "Successfully parsed configuration file to: $it" } }
  57                     .cache()
  58                     .flatMapMany { basePartialConfig ->
  59                         cbsConfigurationProvider(basePartialConfig, configStateListener, mdc)
  60                                 .invoke()
  61                                 .map { configMerger.merge(basePartialConfig, it) }
  62                                 .map(configValidator::validate)
  63                                 .throwOnLeft()
  64                                 .map(configTransformer::toFinalConfiguration)
  65                     }
  66
  67     private fun cbsConfigurationProvider(basePartialConfig: PartialConfiguration,
  68                                          configStateListener: ConfigurationStateListener,
  69                                          mdc: MappedDiagnosticContext) =
  70             CbsConfigurationProvider(
  71                     CbsClientFactory.createCbsClient(EnvProperties.fromEnvironment()),
  72                     cbsConfigurationFrom(basePartialConfig),
  73                     configParser,
  74                     configStateListener,
  75                     mdc)
  76
  77     private fun cbsConfigurationFrom(basePartialConfig: PartialConfiguration) =
  78             configValidator.validatedCbsConfiguration(basePartialConfig)
  79                     .let { configTransformer.toCbsConfiguration(it) }
  80
  81     companion object {
  82         private val logger = Logger(ConfigurationModule::class)
  83     }
  84
  85 }