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 arrow.core.getOrElse
  23 import org.onap.dcae.collectors.veshv.config.api.model.HvVesConfiguration
  24 import org.onap.dcae.collectors.veshv.config.api.model.MissingArgumentException
  25 import org.onap.dcae.collectors.veshv.config.api.model.ValidationException
  26 import org.onap.dcae.collectors.veshv.config.impl.CbsConfigurationProvider
  27 import org.onap.dcae.collectors.veshv.config.impl.ConfigurationMerger
  28 import org.onap.dcae.collectors.veshv.config.impl.ConfigurationValidator
  29 import org.onap.dcae.collectors.veshv.config.impl.HvVesCommandLineParser
  30 import org.onap.dcae.collectors.veshv.config.impl.JsonConfigurationParser
  31 import org.onap.dcae.collectors.veshv.config.impl.PartialConfiguration
  32 import org.onap.dcae.collectors.veshv.utils.arrow.throwOnLeft
  33 import org.onap.dcae.collectors.veshv.utils.logging.Logger
  34 import org.onap.dcae.collectors.veshv.utils.logging.MappedDiagnosticContext
  35 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClientFactory
  36 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.EnvProperties
  37 import reactor.core.publisher.Flux
  38 import reactor.core.publisher.Mono
  39
  40 class ConfigurationModule {
  41
  42     private val cmd = HvVesCommandLineParser()
  43     private val configParser = JsonConfigurationParser()
  44     private val configValidator = ConfigurationValidator()
  45     private val merger = ConfigurationMerger()
  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 { merger.merge(basePartialConfig, it) }
  62                                 .map(configValidator::validate)
  63                                 .throwOnLeft()
  64                     }
  65
  66     private fun cbsConfigurationProvider(basePartialConfig: PartialConfiguration,
  67                                          configStateListener: ConfigurationStateListener,
  68                                          mdc: MappedDiagnosticContext): CbsConfigurationProvider =
  69             CbsConfigurationProvider(
  70                     CbsClientFactory.createCbsClient(EnvProperties.fromEnvironment()),
  71                     cbsConfigurationFrom(basePartialConfig),
  72                     configParser,
  73                     configStateListener,
  74                     mdc)
  75
  76     private fun cbsConfigurationFrom(basePartialConfig: PartialConfiguration) = configValidator
  77             .validatedCbsConfiguration(basePartialConfig)
  78             .getOrElse { throw ValidationException("Invalid CBS section defined in configuration file") }
  79
  80     companion object {
  81         private val logger = Logger(ConfigurationModule::class)
  82     }
  83 }