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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.impl.socket
import org.onap.dcae.collectors.veshv.boundary.CollectorProvider
import org.onap.dcae.collectors.veshv.boundary.Server
import org.onap.dcae.collectors.veshv.model.ServerConfiguration
import org.onap.dcae.collectors.veshv.utils.logging.Logger
import org.reactivestreams.Publisher
import reactor.core.publisher.Mono
import reactor.ipc.netty.NettyInbound
import reactor.ipc.netty.NettyOutbound
import reactor.ipc.netty.options.ServerOptions
import reactor.ipc.netty.tcp.TcpServer
import java.util.function.BiFunction
/**
* @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
* @since May 2018
*/
internal class NettyTcpServer(private val serverConfig: ServerConfiguration,
private val sslContextFactory: SslContextFactory,
private val collectorProvider: CollectorProvider) : Server {
override fun start(): Mono<Void> {
logger.info { "Listening on port ${serverConfig.port}" }
return Mono.defer {
val nettyContext = TcpServer.builder()
.options(this::configureServer)
.build()
.start(BiFunction<NettyInbound, NettyOutbound, Publisher<Void>> { t, u ->
handleConnection(t, u)
})
Mono.never<Void>().doFinally { _ -> nettyContext.shutdown() }
}
}
private fun configureServer(opts: ServerOptions.Builder<*>) {
opts.port(serverConfig.port)
opts.sslContext(sslContextFactory.createSslContext(serverConfig.securityConfiguration))
}
private fun handleConnection(nettyInbound: NettyInbound, nettyOutbound: NettyOutbound): Mono<Void> {
logger.debug("Got connection")
nettyOutbound.alloc()
val sendHello = nettyOutbound
.options { it.flushOnEach() }
.sendString(Mono.just("ONAP_VES_HV/0.1\n"))
.then()
val handleIncomingMessages = collectorProvider()
.handleConnection(nettyInbound.context().channel().alloc(), nettyInbound.receive().retain())
return sendHello.then(handleIncomingMessages)
}
companion object {
private val logger = Logger(NettyTcpServer::class)
}
}
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