reactor.ipc.netty.http.server.HttpServer.java Source code

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Here is the source code for reactor.ipc.netty.http.server.HttpServer.java

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/*
 * Copyright (c) 2011-2016 Pivotal Software Inc, 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.
 */

package reactor.ipc.netty.http.server;

import java.util.Objects;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import java.util.function.Consumer;

import io.netty.channel.Channel;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.logging.LoggingHandler;
import io.netty.util.NetUtil;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Mono;
import reactor.core.publisher.MonoSink;
import reactor.ipc.netty.NettyConnector;
import reactor.ipc.netty.NettyContext;
import reactor.ipc.netty.NettyInbound;
import reactor.ipc.netty.NettyOutbound;
import reactor.ipc.netty.NettyPipeline;
import reactor.ipc.netty.channel.ContextHandler;
import reactor.ipc.netty.http.HttpResources;
import reactor.ipc.netty.options.NettyOptions;
import reactor.ipc.netty.options.ServerOptions;
import reactor.ipc.netty.tcp.TcpServer;

/**
 * Base functionality needed by all servers that communicate with clients over HTTP.
 *
 * @author Stephane Maldini
 */
public final class HttpServer implements NettyConnector<HttpServerRequest, HttpServerResponse> {

    /**
     * Build a simple Netty HTTP server listening on 127.0.0.1 and 12012
     *
     * @return a simple HTTP Server
     */
    public static HttpServer create() {
        return create(NetUtil.LOCALHOST.getHostAddress());
    }

    /**
     * Build a simple Netty HTTP server listening othe passed bind address and port
     *
     * @param options
     *
     * @return a simple HTTP server
     */
    public static HttpServer create(Consumer<? super HttpServerOptions> options) {
        Objects.requireNonNull(options, "options");
        HttpServerOptions serverOptions = HttpServerOptions.create();
        serverOptions.loopResources(HttpResources.get());
        options.accept(serverOptions);
        return new HttpServer(serverOptions.duplicate());
    }

    /**
     * Build a simple Netty HTTP server listening on 127.0.0.1 and the passed port
     *
     * @param port the port to listen to
     *
     * @return a simple HTTP server
     */
    public static HttpServer create(int port) {
        return create("0.0.0.0", port);
    }

    /**
     * Build a simple Netty HTTP server listening on 127.0.0.1 and 12012
     *
     * @param bindAddress address to listen for (e.g. 0.0.0.0 or 127.0.0.1)
     *
     * @return a simple HTTP server
     */
    public static HttpServer create(String bindAddress) {
        return create(bindAddress, NettyOptions.DEFAULT_PORT);
    }

    /**
     * Build a simple Netty HTTP server listening othe passed bind address and port
     *
     * @param bindAddress address to listen for (e.g. 0.0.0.0 or 127.0.0.1)
     * @param port the port to listen to
     *
     * @return a simple HTTP server
     */
    public static HttpServer create(String bindAddress, int port) {
        return create(opts -> opts.listen(bindAddress, port));
    }

    final TcpBridgeServer server;
    final HttpServerOptions options;

    HttpServer(HttpServerOptions options) {
        this.server = new TcpBridgeServer(options);
        this.options = options;
    }

    @Override
    @SuppressWarnings("unchecked")
    public Mono<? extends NettyContext> newHandler(
            BiFunction<? super HttpServerRequest, ? super HttpServerResponse, ? extends Publisher<Void>> handler) {
        Objects.requireNonNull(handler, "handler");
        return server.newHandler((BiFunction<NettyInbound, NettyOutbound, Publisher<Void>>) handler);
    }

    /**
     *
     * @param routesBuilder a mutable route builder
     * @return a new {@link Mono} starting the router on subscribe
     */
    public Mono<? extends NettyContext> newRouter(Consumer<? super HttpServerRoutes> routesBuilder) {
        Objects.requireNonNull(routesBuilder, "routeBuilder");
        HttpServerRoutes routes = HttpServerRoutes.newRoutes();
        routesBuilder.accept(routes);
        return newHandler(routes);
    }

    static final LoggingHandler loggingHandler = new LoggingHandler(HttpServer.class);

    final class TcpBridgeServer extends TcpServer implements BiConsumer<ChannelPipeline, ContextHandler<Channel>> {

        TcpBridgeServer(ServerOptions options) {
            super(options);
        }

        @Override
        protected ContextHandler<Channel> doHandler(
                BiFunction<? super NettyInbound, ? super NettyOutbound, ? extends Publisher<Void>> handler,
                MonoSink<NettyContext> sink) {
            return ContextHandler
                    .newServerContext(sink, options, loggingHandler,
                            (ch, c, msg) -> HttpServerOperations.bindHttp(ch, handler, c, msg))
                    .onPipeline(this).autoCreateOperations(false);
        }

        @Override
        public void accept(ChannelPipeline p, ContextHandler<Channel> c) {
            p.addLast(NettyPipeline.HttpDecoder, new HttpRequestDecoder())
                    .addLast(NettyPipeline.HttpEncoder, new HttpResponseEncoder())
                    .addLast(NettyPipeline.HttpServerHandler, new HttpServerHandler(c));
        }

        @Override
        protected LoggingHandler loggingHandler() {
            return loggingHandler;
        }
    }
}