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/*
* ============LICENSE_START=======================================================
* DCAEGEN2-SERVICES-SDK
* ================================================================================
* Copyright (C) 2019 Nokia. All rights reserved.
* ================================================================================
* 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.dcaegen2.services.sdk.services.hvves.client.producer.ct;
import io.netty.buffer.ByteBuf;
import java.net.InetSocketAddress;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.stream.IntStream;
import io.netty.handler.ssl.SslContext;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.ReplayProcessor;
import reactor.netty.DisposableServer;
import reactor.netty.NettyInbound;
import reactor.netty.NettyOutbound;
import reactor.netty.tcp.TcpServer;
import reactor.util.function.Tuple2;
/**
* @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
*/
public class DummyCollector {
private Optional<SslContext> sslContext;
private final List<ByteBuf> receivedData = Collections.synchronizedList(new ArrayList<>());
private DisposableServer server;
private ReplayProcessor<ClientDisconnected> clientDisconnected = ReplayProcessor.create();
private Flux<Integer> handledClientsCount = Flux.fromStream(IntStream.iterate(0, x -> x + 1).boxed())
.zipWith(clientDisconnected)
.map(Tuple2::getT1)
.share();
DummyCollector(Optional<SslContext> sslContext) {
this.sslContext = sslContext;
}
public InetSocketAddress start() {
TcpServer tcpServer =
sslContext.map(context -> TcpServer.create()
.secure(ssl -> ssl.sslContext(context)))
.orElseGet(TcpServer::create)
.host("localhost")
.port(6666)
.wiretap(true)
.handle(this::handleConnection);
server = tcpServer.bindNow();
return server.address();
}
public void stop() {
server.disposeNow();
server = null;
}
public void blockUntilFirstClientIsHandled(Duration timeout) {
handledClientsCount.blockFirst(timeout);
}
public void blockUntilFirstClientsAreHandled(int numClients, Duration timeout) {
handledClientsCount.take(numClients).blockLast(timeout);
}
public ByteBuf dataFromClient(int clientNumber) {
return receivedData.get(clientNumber);
}
public ByteBuf dataFromFirstClient() {
return dataFromClient(0);
}
private Publisher<Void> handleConnection(NettyInbound nettyInbound, NettyOutbound nettyOutbound) {
nettyInbound.receive()
.aggregate()
.retain()
.log()
.doOnNext(this::collect)
.subscribe();
return nettyOutbound.neverComplete();
}
private void collect(ByteBuf buf) {
receivedData.add(buf);
clientDisconnected.onNext(ClientDisconnected.INSTANCE);
}
private static final class ClientDisconnected {
private static final ClientDisconnected INSTANCE = new ClientDisconnected();
}
}
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