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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018 NOKIA
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.collectors.veshv.utils
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import reactor.core.publisher.Mono
import reactor.netty.DisposableServer
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since August 2018
*/
abstract class ServerHandle(val host: String, val port: Int) : Closeable {
abstract fun await(): Mono<Void>
}
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since August 2018
*/
class NettyServerHandle(private val ctx: DisposableServer,
private val closeAction: Mono<Void> = Mono.empty())
: ServerHandle(ctx.host(), ctx.port()) {
override fun close(): Mono<Void> =
Mono.just(ctx)
.filter { !it.isDisposed }
.flatMap {
closeAction.thenReturn(it)
}
.then(dispose())
private fun dispose(): Mono<Void> =
Mono.create { callback ->
logger.debug { "About to dispose NettyServer" }
ctx.dispose()
ctx.onDispose {
logger.debug { "Netty server disposed" }
callback.success()
}
}
override fun await(): Mono<Void> = Mono.create { callback ->
ctx.channel().closeFuture().addListener {
callback.success()
}
}
companion object {
private val logger = Logger(NettyServerHandle::class)
}
}
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