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
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.simulators.xnf.impl.adapters
22 import arrow.core.Option
23 import arrow.core.getOrElse
24 import io.netty.handler.ssl.SslContext
25 import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
26 import org.onap.dcae.collectors.veshv.domain.SecurityConfiguration
27 import org.onap.dcae.collectors.veshv.domain.WireFrameEncoder
28 import org.onap.dcae.collectors.veshv.simulators.xnf.impl.config.SimulatorConfiguration
29 import org.onap.dcae.collectors.veshv.ssl.boundary.ClientSslContextFactory
30 import org.onap.dcae.collectors.veshv.utils.arrow.asIo
31 import org.onap.dcae.collectors.veshv.utils.logging.Logger
32 import org.reactivestreams.Publisher
33 import reactor.core.publisher.Flux
34 import reactor.core.publisher.Mono
35 import reactor.core.publisher.ReplayProcessor
36 import reactor.netty.NettyOutbound
37 import reactor.netty.tcp.TcpClient
40 * @author Jakub Dudycz <jakub.dudycz@nokia.com>
43 class VesHvClient(private val configuration: SimulatorConfiguration) {
45 private val client: TcpClient = TcpClient.create()
46 .host(configuration.vesHost)
47 .port(configuration.vesPort)
50 private fun TcpClient.configureSsl() =
51 createSslContext(configuration.security)
52 .map { sslContext -> this.secure(sslContext) }
55 fun sendIo(messages: Flux<WireFrameMessage>) =
56 sendRx(messages).then(Mono.just(Unit)).asIo()
58 private fun sendRx(messages: Flux<WireFrameMessage>): Mono<Void> {
59 val complete = ReplayProcessor.create<Void>(1)
61 .handle { _, output -> handler(complete, messages, output) }
65 "Failed to connect to VesHvCollector on ${configuration.vesHost}:${configuration.vesPort}"
70 "Connected to VesHvCollector on ${configuration.vesHost}:${configuration.vesPort}"
73 return complete.then()
76 private fun handler(complete: ReplayProcessor<Void>,
77 messages: Flux<WireFrameMessage>,
78 nettyOutbound: NettyOutbound): Publisher<Void> {
80 val allocator = nettyOutbound.alloc()
81 val encoder = WireFrameEncoder(allocator)
84 .window(MAX_BATCH_SIZE)
87 .logConnectionClosed()
88 .options { it.flushOnBoundary() }
91 logger.info { "Messages have been sent" }
97 private fun createSslContext(config: SecurityConfiguration): Option<SslContext> =
98 ClientSslContextFactory().createSslContext(config)
100 private fun NettyOutbound.logConnectionClosed() =
101 withConnection { conn ->
102 conn.onTerminate().subscribe {
103 logger.info { "Connection to ${conn.address()} has been closed" }
108 private val logger = Logger(VesHvClient::class)
109 private const val MAX_BATCH_SIZE = 128