THRIFT-893 JavaScript Tutorial: dynamic part
git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1030018 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/tutorial/js/src/Httpd.java b/tutorial/js/src/Httpd.java
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+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InterruptedIOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.net.URLDecoder;
+import java.util.Locale;
+
+import org.apache.http.ConnectionClosedException;
+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.ContentProducer;
+import org.apache.http.entity.EntityTemplate;
+import org.apache.http.entity.FileEntity;
+import org.apache.http.impl.DefaultHttpResponseFactory;
+import org.apache.http.impl.DefaultHttpServerConnection;
+import org.apache.http.impl.NoConnectionReuseStrategy;
+import org.apache.http.params.BasicHttpParams;
+import org.apache.http.params.CoreConnectionPNames;
+import org.apache.http.params.CoreProtocolPNames;
+import org.apache.http.params.HttpParams;
+import org.apache.http.protocol.BasicHttpContext;
+import org.apache.http.protocol.BasicHttpProcessor;
+import org.apache.http.protocol.HttpContext;
+import org.apache.http.protocol.HttpProcessor;
+import org.apache.http.protocol.HttpRequestHandler;
+import org.apache.http.protocol.HttpRequestHandlerRegistry;
+import org.apache.http.protocol.HttpService;
+import org.apache.http.util.EntityUtils;
+import org.apache.thrift.TProcessor;
+import org.apache.thrift.protocol.TJSONProtocol;
+import org.apache.thrift.protocol.TProtocol;
+import org.apache.thrift.transport.TMemoryBuffer;
+
+// Generated code
+import tutorial.*;
+import shared.*;
+
+import java.util.HashMap;
+
+/**
+ * Basic, yet fully functional and spec compliant, HTTP/1.1 file server.
+ * <p>
+ * Please note the purpose of this application is demonstrate the usage of
+ * HttpCore APIs. It is NOT intended to demonstrate the most efficient way of
+ * building an HTTP file server.
+ *
+ *
+ */
+public class Httpd {
+
+ public static void main(String[] args) throws Exception {
+ if (args.length < 1) {
+ System.err.println("Please specify document root directory");
+ System.exit(1);
+ }
+ Thread t = new RequestListenerThread(8088, args[0]);
+ t.setDaemon(false);
+ t.start();
+ }
+
+ static class HttpFileHandler implements HttpRequestHandler {
+
+ private final String docRoot;
+
+ public HttpFileHandler(final String docRoot) {
+ super();
+ this.docRoot = docRoot;
+ }
+
+ public void handle(final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException {
+
+ 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");
+ }
+ String target = request.getRequestLine().getUri();
+
+ if (request instanceof HttpEntityEnclosingRequest && target.equals("/thrift/service/tutorial/")) {
+ HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
+ byte[] entityContent = EntityUtils.toByteArray(entity);
+ System.out.println("Incoming content: " + new String(entityContent));
+
+ final String output = this.thriftRequest(entityContent);
+
+ System.out.println("Outgoing content: "+output);
+
+ EntityTemplate body = new EntityTemplate(new ContentProducer() {
+
+ public void writeTo(final OutputStream outstream) throws IOException {
+ OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
+ writer.write(output);
+ writer.flush();
+ }
+
+ });
+ body.setContentType("text/html; charset=UTF-8");
+ response.setEntity(body);
+ } else {
+ final File file = new File(this.docRoot, URLDecoder.decode(target, "UTF-8"));
+ if (!file.exists()) {
+
+ response.setStatusCode(HttpStatus.SC_NOT_FOUND);
+ EntityTemplate body = new EntityTemplate(new ContentProducer() {
+
+ public void writeTo(final OutputStream outstream) throws IOException {
+ OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
+ writer.write("<html><body><h1>");
+ writer.write("File ");
+ writer.write(file.getPath());
+ writer.write(" not found");
+ writer.write("</h1></body></html>");
+ writer.flush();
+ }
+
+ });
+ body.setContentType("text/html; charset=UTF-8");
+ response.setEntity(body);
+ System.out.println("File " + file.getPath() + " not found");
+
+ } else if (!file.canRead() || file.isDirectory()) {
+
+ response.setStatusCode(HttpStatus.SC_FORBIDDEN);
+ EntityTemplate body = new EntityTemplate(new ContentProducer() {
+
+ public void writeTo(final OutputStream outstream) throws IOException {
+ OutputStreamWriter writer = new OutputStreamWriter(outstream, "UTF-8");
+ writer.write("<html><body><h1>");
+ writer.write("Access denied");
+ writer.write("</h1></body></html>");
+ writer.flush();
+ }
+
+ });
+ body.setContentType("text/html; charset=UTF-8");
+ response.setEntity(body);
+ System.out.println("Cannot read file " + file.getPath());
+
+ } else {
+
+ response.setStatusCode(HttpStatus.SC_OK);
+ FileEntity body = new FileEntity(file, "text/html");
+ response.setEntity(body);
+ System.out.println("Serving file " + file.getPath());
+
+ }
+ }
+ }
+
+ private String thriftRequest(byte[] input){
+ try{
+
+ //Input
+ TMemoryBuffer inbuffer = new TMemoryBuffer(input.length);
+ inbuffer.write(input);
+ TProtocol inprotocol = new TJSONProtocol(inbuffer);
+
+ //Output
+ TMemoryBuffer outbuffer = new TMemoryBuffer(100);
+ TProtocol outprotocol = new TJSONProtocol(outbuffer);
+
+ TProcessor processor = new Calculator.Processor(new CalculatorHandler());
+ processor.process(inprotocol, outprotocol);
+
+ byte[] output = new byte[outbuffer.length()];
+ outbuffer.readAll(output, 0, output.length);
+
+ return new String(output,"UTF-8");
+ }catch(Throwable t){
+ return "Error:"+t.getMessage();
+ }
+
+
+ }
+
+ }
+
+ static class RequestListenerThread extends Thread {
+
+ private final ServerSocket serversocket;
+ private final HttpParams params;
+ private final HttpService httpService;
+
+ public RequestListenerThread(int port, final String docroot) throws IOException {
+ this.serversocket = new ServerSocket(port);
+ this.params = new BasicHttpParams();
+ this.params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 1000).setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
+ .setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false).setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true)
+ .setParameter(CoreProtocolPNames.ORIGIN_SERVER, "HttpComponents/1.1");
+
+ // Set up the HTTP protocol processor
+ HttpProcessor httpproc = new BasicHttpProcessor();
+
+ // Set up request handlers
+ HttpRequestHandlerRegistry reqistry = new HttpRequestHandlerRegistry();
+ reqistry.register("*", new HttpFileHandler(docroot));
+
+ // Set up the HTTP service
+ this.httpService = new HttpService(httpproc, new NoConnectionReuseStrategy(), new DefaultHttpResponseFactory());
+ this.httpService.setParams(this.params);
+ this.httpService.setHandlerResolver(reqistry);
+ }
+
+ public void run() {
+ System.out.println("Listening on port " + this.serversocket.getLocalPort());
+ System.out.println("Point your browser to http://localhost:8088/tutorial/js/tutorial.html");
+
+ while (!Thread.interrupted()) {
+ try {
+ // Set up HTTP connection
+ Socket socket = this.serversocket.accept();
+ DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
+ System.out.println("Incoming connection from " + socket.getInetAddress());
+ conn.bind(socket, this.params);
+
+ // Start worker thread
+ Thread t = new WorkerThread(this.httpService, conn);
+ t.setDaemon(true);
+ 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;
+ }
+
+ 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) {
+ }
+ }
+ }
+
+ }
+
+}