Java tutorial
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For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package com.gravspace.core; import java.io.IOException; import java.io.InterruptedIOException; import java.net.ServerSocket; import java.net.Socket; import java.net.URL; import java.security.KeyStore; import java.util.Date; import java.util.Locale; import java.util.Properties; import java.util.concurrent.ExecutorService; import java.util.concurrent.TimeUnit; import javax.net.ssl.KeyManager; import javax.net.ssl.KeyManagerFactory; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLServerSocketFactory; import org.apache.http.ConnectionClosedException; import org.apache.http.Consts; import org.apache.http.Header; import org.apache.http.HttpConnectionFactory; import org.apache.http.HttpEntity; import org.apache.http.HttpEntityEnclosingRequest; import org.apache.http.HttpException; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.HttpServerConnection; import org.apache.http.HttpStatus; import org.apache.http.MethodNotSupportedException; import org.apache.http.entity.ContentType; import org.apache.http.entity.StringEntity; import org.apache.http.impl.DefaultBHttpServerConnection; import org.apache.http.impl.DefaultBHttpServerConnectionFactory; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.HttpProcessor; import org.apache.http.protocol.HttpProcessorBuilder; import org.apache.http.protocol.HttpRequestHandler; import org.apache.http.protocol.HttpService; import org.apache.http.protocol.ResponseConnControl; import org.apache.http.protocol.ResponseContent; import org.apache.http.protocol.ResponseDate; import org.apache.http.protocol.ResponseServer; import org.apache.http.protocol.UriHttpRequestHandlerMapper; import org.apache.http.util.EntityUtils; import akka.actor.ActorRef; import akka.actor.ActorSystem; import akka.actor.Props; import akka.actor.TypedActor; import akka.actor.TypedProps; import akka.japi.Creator; import com.gravspace.entrypoint.IRequestHandlerActor; import com.gravspace.entrypoint.RequestHandlerActor; import com.gravspace.messages.ResponseMessage; import com.gravspace.util.Cookie; import com.gravspace.util.LimitedQueue; /** * Basic, yet fully functional and spec compliant, HTTP/1.1 file server. */ public class HttpServer { public static void start(String[] args) throws Exception { int port = 8082; if (args.length >= 1) { port = Integer.parseInt(args[0]); } ActorSystem system = ActorSystem.create("Application-System"); Properties config = new Properties(); config.load(HttpServer.class.getResourceAsStream("/megapode.conf")); ActorRef master = system.actorOf(Props.create(CoordinatingActor.class, config), "Coordinator"); // Set up the HTTP protocol processor HttpProcessor httpproc = HttpProcessorBuilder.create().add(new ResponseDate()) .add(new ResponseServer("Test/1.1")).add(new ResponseContent()).add(new ResponseConnControl()) .build(); // Set up request handlers UriHttpRequestHandlerMapper reqistry = new UriHttpRequestHandlerMapper(); reqistry.register("*", new HttpHandler(system, master)); // Set up the HTTP service HttpService httpService = new HttpService(httpproc, reqistry); SSLServerSocketFactory sf = null; if (port == 8443) { // Initialize SSL context ClassLoader cl = HttpServer.class.getClassLoader(); URL url = cl.getResource("my.keystore"); if (url == null) { System.out.println("Keystore not found"); System.exit(1); } KeyStore keystore = KeyStore.getInstance("jks"); keystore.load(url.openStream(), "secret".toCharArray()); KeyManagerFactory kmfactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm()); kmfactory.init(keystore, "secret".toCharArray()); KeyManager[] keymanagers = kmfactory.getKeyManagers(); SSLContext sslcontext = SSLContext.getInstance("TLS"); sslcontext.init(keymanagers, null, null); sf = sslcontext.getServerSocketFactory(); } RequestListenerThread t = new RequestListenerThread(port, httpService, sf); t.setDaemon(false); t.start(); t.join(); } static class HttpHandler implements HttpRequestHandler { private ActorRef coordinator; private ActorSystem system; private IRequestHandlerActor requester; public HttpHandler(final ActorSystem system, final ActorRef coordinator) { super(); this.coordinator = coordinator; this.system = system; requester = TypedActor.get(system).typedActorOf(new TypedProps<RequestHandlerActor>( RequestHandlerActor.class, new Creator<RequestHandlerActor>() { public RequestHandlerActor create() { return new RequestHandlerActor(coordinator); } }), "entrypoint"); } public void handle(final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException { Date now = new Date(); String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH); if (!method.equals("GET") && !method.equals("HEAD") && !method.equals("POST")) { throw new MethodNotSupportedException(method + " method not supported"); } byte[] entityContent = null; if (request instanceof HttpEntityEnclosingRequest) { HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity(); entityContent = EntityUtils.toByteArray(entity); } // ByteArrayEntity ResponseMessage result; try { result = requester.process(request.getRequestLine(), request.getAllHeaders(), entityContent); HttpEntity body = new StringEntity(new String(result.getResponseContent()), ContentType.create(result.getContentType(), Consts.UTF_8)); response.setEntity(body); response.setStatusCode(result.getStatus()); response.setHeaders(result.getHeaders().toArray(new Header[0])); System.out.println(((new Date()).getTime() - now.getTime()) + " ms"); } catch (Exception e) { e.printStackTrace(); // System.out.println("Got here"); response.setStatusCode(HttpStatus.SC_METHOD_FAILURE); HttpEntity body = new StringEntity(e.getMessage(), ContentType.create("text/plain", Consts.UTF_8)); response.setEntity(body); } } } static class RequestListenerThread extends Thread { private final HttpConnectionFactory<DefaultBHttpServerConnection> connFactory; private final ServerSocket serversocket; private final HttpService httpService; ExecutorService executor; public RequestListenerThread(final int port, final HttpService httpService, final SSLServerSocketFactory sf) throws IOException { this.connFactory = DefaultBHttpServerConnectionFactory.INSTANCE; this.serversocket = sf != null ? sf.createServerSocket(port) : new ServerSocket(port); this.httpService = httpService; LimitedQueue<Runnable> blockingQueue = new LimitedQueue<Runnable>(10); executor = new java.util.concurrent.ThreadPoolExecutor(1, 10, 0L, TimeUnit.MILLISECONDS, blockingQueue); } @Override public void run() { System.out.println("Listening on port " + this.serversocket.getLocalPort()); while (!Thread.interrupted()) { try { // Set up HTTP connection /** * TODO: Change this to use an executor service */ Socket socket = this.serversocket.accept(); System.out.println("Incoming connection from " + socket.getInetAddress()); HttpServerConnection conn = this.connFactory.createConnection(socket); // Start worker thread Thread t = new WorkerThread(this.httpService, conn); t.setDaemon(true); // executor.submit(t); t.start(); } catch (InterruptedIOException ex) { break; } catch (IOException e) { System.err.println("I/O error initialising connection thread: " + e.getMessage()); break; } } } } static class WorkerThread extends Thread { private final HttpService httpservice; private final HttpServerConnection conn; public WorkerThread(final HttpService httpservice, final HttpServerConnection conn) { super(); this.httpservice = httpservice; this.conn = conn; } @Override public void run() { System.out.println("New connection thread"); HttpContext context = new BasicHttpContext(null); try { while (!Thread.interrupted() && this.conn.isOpen()) { this.httpservice.handleRequest(this.conn, context); } } catch (ConnectionClosedException ex) { System.err.println("Client closed connection"); } catch (IOException ex) { System.err.println("I/O error: " + ex.getMessage()); } catch (HttpException ex) { System.err.println("Unrecoverable HTTP protocol violation: " + ex.getMessage()); } finally { try { this.conn.shutdown(); } catch (IOException ignore) { } } } } }