2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018-2019 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
11 * http://www.apache.org/licenses/LICENSE-2.0
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=========================================================
20 package org.onap.dcae.collectors.veshv.main
22 import arrow.effects.IO
23 import arrow.effects.fix
24 import arrow.effects.instances.io.monad.monad
25 import arrow.typeclasses.binding
26 import org.onap.dcae.collectors.veshv.commandline.handleWrongArgumentErrorCurried
27 import org.onap.dcae.collectors.veshv.healthcheck.api.HealthDescription
28 import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
29 import org.onap.dcae.collectors.veshv.main.servers.HealthCheckServer
30 import org.onap.dcae.collectors.veshv.main.servers.VesServer
31 import org.onap.dcae.collectors.veshv.model.ServerConfiguration
32 import org.onap.dcae.collectors.veshv.model.ServiceContext
33 import org.onap.dcae.collectors.veshv.utils.Closeable
34 import org.onap.dcae.collectors.veshv.utils.ServerHandle
35 import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
36 import org.onap.dcae.collectors.veshv.utils.arrow.unsafeRunEitherSync
37 import org.onap.dcae.collectors.veshv.utils.logging.Logger
38 import org.onap.dcae.collectors.veshv.utils.registerShutdownHook
40 private const val VESHV_PACKAGE = "org.onap.dcae.collectors.veshv"
41 private val logger = Logger("$VESHV_PACKAGE.main")
42 private const val PROGRAM_NAME = "java $VESHV_PACKAGE.main.MainKt"
44 fun main(args: Array<String>) =
45 ArgVesHvConfiguration().parse(args)
46 .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
47 .map(::startAndAwaitServers)
50 logger.withError(ServiceContext::mdc) { log("Failed to start a server", ex) }
53 { logger.debug(ServiceContext::mdc) { "High Volume VES Collector execution finished" } }
56 private fun startAndAwaitServers(config: ServerConfiguration) =
58 Logger.setLogLevel(VESHV_PACKAGE, config.logLevel)
59 logger.info { "Using configuration: $config" }
61 val healthCheckServerHandle = HealthCheckServer.start(config).bind()
62 val hvVesHandle = VesServer.start(config).bind()
64 registerShutdownHook(closeServers(hvVesHandle, healthCheckServerHandle))
65 hvVesHandle.await().bind()
68 internal fun closeServers(vararg handles: ServerHandle,
69 healthState: HealthState = HealthState.INSTANCE) = {
70 logger.debug(ServiceContext::mdc) { "Graceful shutdown started" }
71 healthState.changeState(HealthDescription.SHUTTING_DOWN)
72 Closeable.closeAll(handles.asIterable()).unsafeRunSync()
73 logger.info(ServiceContext::mdc) { "Graceful shutdown completed" }