sources/hv-collector-core/src/main/kotlin/org/onap/dcae/collectors/veshv/factory/CollectorFactory.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.factory
  21
  22 import arrow.core.Option
  23 import arrow.effects.IO
  24 import org.onap.dcae.collectors.veshv.boundary.Collector
  25 import org.onap.dcae.collectors.veshv.boundary.CollectorProvider
  26 import org.onap.dcae.collectors.veshv.boundary.ConfigurationProvider
  27 import org.onap.dcae.collectors.veshv.boundary.Metrics
  28 import org.onap.dcae.collectors.veshv.boundary.SinkProvider
  29 import org.onap.dcae.collectors.veshv.domain.WireFrameDecoder
  30 import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
  31 import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
  32 import org.onap.dcae.collectors.veshv.impl.Router
  33 import org.onap.dcae.collectors.veshv.impl.VesDecoder
  34 import org.onap.dcae.collectors.veshv.impl.VesHvCollector
  35 import org.onap.dcae.collectors.veshv.impl.wire.WireChunkDecoder
  36 import org.onap.dcae.collectors.veshv.model.ClientContext
  37 import org.onap.dcae.collectors.veshv.model.CollectorConfiguration
  38 import org.onap.dcae.collectors.veshv.utils.arrow.getOption
  39 import org.onap.dcae.collectors.veshv.utils.logging.Logger
  40 import java.util.concurrent.atomic.AtomicReference
  41
  42 /**
  43  * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
  44  * @since May 2018
  45  */
  46 class CollectorFactory(val configuration: ConfigurationProvider,
  47                        private val sinkProvider: SinkProvider,
  48                        private val metrics: Metrics,
  49                        private val maximumPayloadSizeBytes: Int,
  50                        private val healthState: HealthState = HealthState.INSTANCE) {
  51
  52     fun createVesHvCollectorProvider(): CollectorProvider {
  53         val config: AtomicReference<CollectorConfiguration> = AtomicReference()
  54         configuration()
  55                 .doOnNext {
  56                     logger.info { "Using updated configuration for new connections" }
  57                     healthState.changeState(HealthDescription.HEALTHY)
  58                 }
  59                 .doOnError {
  60                     logger.error { "Failed to acquire configuration from consul" }
  61                     healthState.changeState(HealthDescription.DYNAMIC_CONFIGURATION_NOT_FOUND)
  62                 }
  63                 .subscribe(config::set)
  64
  65         return object : CollectorProvider {
  66             override fun invoke(ctx: ClientContext): Option<Collector> =
  67                 config.getOption().map { createVesHvCollector(it, ctx) }
  68
  69             override fun close() = sinkProvider.close()
  70         }
  71     }
  72
  73     private fun createVesHvCollector(config: CollectorConfiguration, ctx: ClientContext): Collector =
  74             VesHvCollector(
  75                     clientContext = ctx,
  76                     wireChunkDecoder = WireChunkDecoder(WireFrameDecoder(maximumPayloadSizeBytes), ctx),
  77                     protobufDecoder = VesDecoder(),
  78                     router = Router(config.routing, ctx),
  79                     sink = sinkProvider(ctx),
  80                     metrics = metrics)
  81
  82     companion object {
  83         private val logger = Logger(CollectorFactory::class)
  84     }
  85 }
  86