| /******************************************************************************* |
| * 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. |
| *******************************************************************************/ |
| |
| import java.applet.Applet; |
| import java.applet.AppletContext; |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.PrintWriter; |
| import java.io.UnsupportedEncodingException; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import java.net.URLEncoder; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import javolution.util.FastMap; |
| |
| import org.ofbiz.base.util.UtilValidate; |
| |
| /** |
| * Control Applet - Client applet for page pushing and (future) chat |
| */ |
| @SuppressWarnings("serial") |
| public class ControlApplet extends Applet implements Runnable { |
| |
| private static String pushUrl = "/commonapp/control/pushapplet"; |
| private static String pullUrl = "/commonapp/control/pullapplet"; |
| |
| protected AppletContext ctx = null; |
| |
| protected String sessionId = null; |
| protected String visitId = null; |
| protected String serverUrl = null; |
| protected String timeoutUrl = null; |
| protected String currentPage = null; |
| protected String debug = null; |
| |
| protected int waitTime = 1500; |
| protected int timeout = 300000; |
| |
| protected boolean isRunning = false; |
| protected boolean stopped = true; |
| |
| protected Thread thread = null; |
| |
| @Override |
| public void init() { |
| ctx = this.getAppletContext(); |
| this.sessionId = this.getParameter("sessionId"); |
| this.visitId = this.getParameter("visitId"); |
| this.serverUrl = this.getParameter("serverUrl"); |
| this.timeoutUrl = this.getParameter("timeoutUrl"); |
| this.currentPage = this.getParameter("currentPage"); |
| this.debug = this.getParameter("debug"); |
| |
| // see if we override the integer values |
| try { |
| int waitInt = Integer.parseInt(this.getParameter("waitTime")); |
| if (waitInt > 0) |
| waitTime = waitInt; |
| } catch (NumberFormatException e) { |
| } |
| try { |
| int outInt = Integer.parseInt(this.getParameter("timeout")); |
| if (outInt > 0) |
| timeout = outInt; |
| } catch (NumberFormatException e) { |
| } |
| |
| if (serverUrl != null) { |
| boolean sessionOkay = false; |
| boolean visitOkay = false; |
| boolean pageOkay = false; |
| |
| if (UtilValidate.isNotEmpty(sessionId)) |
| sessionOkay = true; |
| if (UtilValidate.isNotEmpty(visitId)) |
| visitOkay = true; |
| if (UtilValidate.isNotEmpty(currentPage)) |
| pageOkay = true; |
| |
| if (sessionOkay && visitOkay && pageOkay) { |
| // tell the host about our current page (mainly for followers) |
| this.push(); |
| } |
| |
| // start the polling thread |
| this.isRunning = true; |
| this.stopped = false; |
| thread = new Thread(this); |
| thread.setDaemon(false); |
| thread.start(); |
| } |
| } |
| |
| @Override |
| public void destroy() { |
| this.stopped = true; |
| } |
| |
| // poll the servlet for page request |
| public void run() { |
| while (isRunning && !stopped) { |
| this.pull(); |
| try { |
| Thread.sleep(waitTime); |
| } catch (InterruptedException e) { |
| this.stopped = true; |
| this.isRunning = false; |
| } |
| } |
| if (debug != null && debug.equalsIgnoreCase("true")) |
| System.out.println("Polling finished."); |
| } |
| |
| protected void pull() { |
| Map<String, Object> params = FastMap.newInstance(); |
| params.put("sessionId", this.sessionId.trim()); |
| params.put("visitId", this.visitId.trim()); |
| |
| String pullResp = null; |
| URL callPullUrl = null; |
| try { |
| callPullUrl = new URL(serverUrl + pullUrl); |
| } catch (MalformedURLException e) { |
| } |
| |
| if (callPullUrl != null) { |
| try { |
| pullResp = callServer(callPullUrl, params); |
| } catch (IOException e) { |
| } |
| } |
| |
| if (UtilValidate.isNotEmpty(pullResp)) { |
| URL docUrl = null; |
| try { |
| docUrl = new URL(pullResp); |
| } catch (MalformedURLException e) { |
| } |
| if (docUrl != null) |
| ctx.showDocument(docUrl, "appletWindow"); |
| } |
| } |
| |
| protected void push() { |
| Map<String, Object> params = FastMap.newInstance(); |
| params.put("sessionId", this.sessionId.trim()); |
| params.put("visitId", this.visitId.trim()); |
| params.put("currentPage", this.currentPage.trim()); |
| |
| URL callPushUrl = null; |
| try { |
| callPushUrl = new URL(serverUrl + pushUrl); |
| } catch (MalformedURLException e) { |
| } |
| |
| if (callPushUrl != null) { |
| try { |
| callServer(callPushUrl, params); |
| } catch (IOException e) { |
| } |
| } |
| } |
| |
| private String callServer(URL serverUrl, Map<String, Object> parms) throws IOException { |
| // send the request |
| String parameters = this.encodeArgs(parms); |
| if (debug != null && debug.equalsIgnoreCase("true")) { |
| System.out.println("Sending parameters: " + parameters); |
| } |
| URLConnection uc = serverUrl.openConnection(); |
| uc.setDoOutput(true); |
| uc.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); |
| PrintWriter pw = new PrintWriter(uc.getOutputStream()); |
| pw.println(parameters); |
| pw.close(); |
| |
| // read the response |
| BufferedReader in = new BufferedReader(new InputStreamReader(uc.getInputStream())); |
| String responseStr = in.readLine(); |
| in.close(); |
| if (responseStr != null) { |
| responseStr = responseStr.trim(); |
| } |
| if (debug != null && debug.equalsIgnoreCase("true")) { |
| System.out.println("Receive response: " + responseStr); |
| } |
| return responseStr; |
| } |
| |
| public String encodeArgs(Map<String, Object> args) { |
| StringBuffer buf = new StringBuffer(); |
| if (args != null) { |
| Set<Map.Entry<String, Object>> entrySet = args.entrySet(); |
| for (Map.Entry<String, Object> entry : entrySet) { |
| String name = entry.getKey(); |
| Object value = entry.getValue(); |
| String valueStr = null; |
| if (name != null && value != null) { |
| if (value instanceof String) { |
| valueStr = (String) value; |
| } else { |
| valueStr = value.toString(); |
| } |
| |
| if (UtilValidate.isNotEmpty(valueStr)) { |
| if (buf.length() > 0) buf.append('&'); |
| try { |
| buf.append(URLEncoder.encode(name, "UTF-8")); |
| } catch (UnsupportedEncodingException e) { |
| e.printStackTrace(); |
| } |
| buf.append('='); |
| try { |
| buf.append(URLEncoder.encode(valueStr, "UTF-8")); |
| } catch (UnsupportedEncodingException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |
| } |
| return buf.toString(); |
| } |
| } |