Java tutorial
/** * Copyright 2012 Comcast Corporation * * 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 com.comcast.cqs.controller; import java.io.IOException; import java.io.PrintWriter; import java.util.Arrays; import java.util.List; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import com.amazonaws.services.sqs.model.GetQueueAttributesRequest; import com.amazonaws.services.sqs.model.GetQueueAttributesResult; import com.amazonaws.services.sqs.model.RemovePermissionRequest; import com.comcast.cmb.common.controller.AdminServletBase; import com.comcast.cmb.common.controller.CMBControllerServlet; import com.comcast.cmb.common.model.CMBPolicy; import com.comcast.cmb.common.model.CMBStatement; import com.comcast.cqs.util.Util; /** * Admin page for queue permissions * @author bwolf, tina, baosen, aseem * */ public class CQSQueuePermissionsPage extends AdminServletBase { private static final long serialVersionUID = 1L; private Logger logger = Logger.getLogger(CQSQueuePermissionsPage.class); public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if (redirectUnauthenticatedUser(request, response)) { return; } CMBControllerServlet.valueAccumulator.initializeAllCounters(); response.setContentType("text/html"); PrintWriter out = response.getWriter(); String userId = request.getParameter("userId"); String queueName = request.getParameter("queueName"); String labelSid = request.getParameter("sid"); Map<?, ?> params = request.getParameterMap(); String queueUrl = Util.getAbsoluteQueueUrlForName(queueName, userId); connect(request); if (params.containsKey("Remove")) { try { RemovePermissionRequest removePermissionRequest = new RemovePermissionRequest(queueUrl, labelSid); sqs.removePermission(removePermissionRequest); logger.debug("event=remove_permission queue_url=" + queueUrl + " label=" + labelSid + " user_id=" + userId); } catch (Exception ex) { logger.error("event=remove_permission queue_url=" + queueUrl + " label=" + labelSid + " user_id=" + userId, ex); throw new ServletException(ex); } } out.println("<html>"); header(request, out, "Permissions for Queue " + Util.getNameForAbsoluteQueueUrl(queueUrl)); out.println("<body>"); out.println("<h2>Permissions for Queue " + Util.getNameForAbsoluteQueueUrl(queueUrl) + "</h2>"); if (user != null) { out.println("<table><tr><td><b>User Name:</b></td><td>" + user.getUserName() + "</td></tr>"); out.println("<tr><td><b>User ID:</b></td><td>" + user.getUserId() + "</td></tr>"); out.println("<tr><td><b>Access Key:</b></td><td>" + user.getAccessKey() + "</td></tr>"); out.println("<tr><td><b>Access Secret:</b></td><td>" + user.getAccessSecret() + "</td></tr>"); out.println("<tr><td><b>Queue Name:</b></td><td>" + Util.getNameForAbsoluteQueueUrl(queueUrl) + "</td></tr>"); out.println("<tr><td><b>Queue Url:</b></td><td>" + queueUrl + "</td></tr></table><br>"); } Map<String, String> attributes = null; try { GetQueueAttributesRequest getQueueAttributesRequest = new GetQueueAttributesRequest(queueUrl); getQueueAttributesRequest.setAttributeNames(Arrays.asList("Policy")); GetQueueAttributesResult getQueueAttributesResult = sqs.getQueueAttributes(getQueueAttributesRequest); attributes = getQueueAttributesResult.getAttributes(); } catch (Exception ex) { logger.error("event_failed_to_get_attributes queue_url=" + queueUrl, ex); throw new ServletException(ex); } CMBPolicy policy; try { policy = new CMBPolicy(attributes.get("Policy")); } catch (Exception ex) { throw new ServletException(ex); } if (policy != null && !policy.getStatements().isEmpty()) { List<CMBStatement> stmts = policy.getStatements(); if (stmts != null && stmts.size() > 0) { out.println( "<span class='content'><table border='1' width='70%'><tr><th>Effect</th><th>Principals</th><th>Actions</th><th>Label</th><th> </th></tr>"); } for (int i = 0; stmts != null && i < stmts.size(); i++) { out.print("<form action=\"/webui/cqsuser/permissions/?userId=" + user.getUserId() + "&queueUrl=" + queueUrl + "\" method=POST>"); CMBStatement stmt = stmts.get(i); out.println("<tr><td>" + stmt.getEffect().toString() + "</td><td>"); if (stmt.getPrincipal() != null && stmt.getPrincipal().size() > 0) { for (int k = 0; k < stmt.getPrincipal().size(); k++) { String user1 = stmt.getPrincipal().get(k); out.println(user1 + "<br>"); } } out.println("</td><td>"); if (stmt.getAction() != null && stmt.getAction().size() > 0) { for (int j = 0; j < stmt.getAction().size(); j++) { String action1 = stmt.getAction().get(j); out.println(action1 + "<br>"); } } String sid = stmt.getSid(); out.println("</td>"); out.println("<td>" + sid + "</td>"); out.println( "<td><input type='submit' value='Remove' name='Remove'><input type='hidden' name='sid' value='" + sid + "'><input type='hidden' name='userId' value='" + userId + "'><input type='hidden' name='queueName' value='" + queueName + "'></td></tr></form>"); } out.println("</table></span>"); } out.println("<p><a href='' onclick=\"window.open('/webui/cqsuser/addpermission/?queueName=" + queueName + "&userId=" + userId + "', 'AddQueuePermission', 'location=0,menubar=0,scrollbars=0,status=0,titlebar=0,toolbar=0,height=470,width=730')\">Add permission</a></p>"); out.println("<h5 style='text-align:center;'><a href='/webui'>ADMIN HOME</a>"); out.println("<a href='/webui/cqsuser?userId=" + userId + "'>BACK TO QUEUE</a></h5>"); out.println("</body></html>"); CMBControllerServlet.valueAccumulator.deleteAllCounters(); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }