MantisDuplicateResponseDebug.java

/*
 * Copyright 2014 Netflix, Inc.
 *
 * 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.
 */
package io.reactivex.netty;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import io.reactivex.netty.client.RxClient;
import io.reactivex.netty.pipeline.PipelineConfigurator;
import io.reactivex.netty.protocol.http.client.CompositeHttpClientBuilder;
import io.reactivex.netty.protocol.http.client.HttpClient;
import io.reactivex.netty.protocol.http.client.HttpClientRequest;
import io.reactivex.netty.protocol.http.client.HttpClientResponse;
import io.reactivex.netty.protocol.http.server.HttpServerRequest;
import io.reactivex.netty.protocol.http.server.HttpServerResponse;
import io.reactivex.netty.protocol.http.server.RequestHandler;
import rx.Observable;
import rx.functions.Action1;
import rx.functions.Func1;

import java.nio.charset.Charset;

/**
 * @author Nitesh Kant
 */
public class MantisDuplicateResponseDebug {

    public static void main(String[] args) {

        RxNetty.createHttpServer(8888, new RequestHandler<ByteBuf, ByteBuf>() {
            @Override
            public Observable<Void> handle(HttpServerRequest<ByteBuf> request, HttpServerResponse<ByteBuf> response) {
                return response.writeStringAndFlush("Hello World!!");
            }
        }).start();

        new CompositeHttpClientBuilder<ByteBuf, ByteBuf>()
                .appendPipelineConfigurator(
                        new PipelineConfigurator<HttpClientResponse<ByteBuf>, HttpClientRequest<ByteBuf>>() {
                            @Override
                            public void configureNewPipeline(ChannelPipeline pipeline) {
                                pipeline.addLast("introspecting-handler", new ChannelDuplexHandler() {

                                    private String uri = "<undefined>";

                                    @Override
                                    public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise)
                                            throws Exception {
                                        if (msg instanceof HttpRequest) {
                                            HttpRequest request = (HttpRequest) msg;
                                            uri = request.getUri();
                                            // TODO: Replace with logging
                                            System.out.println("Sending request on channel id: " + ctx.channel().toString() +
                                                               ", request URI: " + uri);
                                        }
                                        super.write(ctx, msg, promise);
                                    }

                                    @Override
                                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                        if (msg instanceof HttpResponse) {
                                            // TODO: Replace with logging
                                            System.out.println("Received response on channel id: " + ctx.channel().toString() +
                                                               ", request URI: " + uri);
                                        }
                                        super.channelRead(ctx, msg);
                                    }
                                });
                            }
                        })
                .build()
                .submit(new RxClient.ServerInfo("localhost", 8888),
                        HttpClientRequest.createGet("/hello"),
                        new HttpClient.HttpClientConfig.Builder().setFollowRedirect(true).followRedirect(2).build())
                .flatMap(new Func1<HttpClientResponse<ByteBuf>, Observable<ByteBuf>>() {
                    @Override
                    public Observable<ByteBuf> call(HttpClientResponse<ByteBuf> r) {
                        return r.getContent();
                    }
                })
                .map(new Func1<ByteBuf, String>() {
                    @Override
                    public String call(ByteBuf o) {
                        return o.toString(Charset.defaultCharset());
                    }
                })
                .toBlocking()
                .forEach(new Action1<String>() {
                    @Override
                    public void call(String s) {
                        System.out.println("s = " + s);
                    }
                });
    }
}