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.HashMap; 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.SetQueueAttributesRequest; import com.comcast.cmb.common.controller.AdminServletBase; import com.comcast.cmb.common.controller.CMBControllerServlet; import com.comcast.cmb.common.util.CMBProperties; import com.comcast.cqs.util.Util; public class CQSEditQueueAttributePage extends AdminServletBase { private static final long serialVersionUID = 1L; private static Logger logger = Logger.getLogger(CQSEditQueueAttributePage.class); @Override 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"); Map<?, ?> params = request.getParameterMap(); String queueName = request.getParameter("queueName"); String queueUrl = Util.getAbsoluteQueueUrlForName(queueName, userId); connect(request); out.println("<html>"); simpleHeader(request, out, "View/Edit Queue Attributes"); if (params.containsKey("Update")) { String visibilityTimeout = request.getParameter("visibilityTimeout"); String maximumMessageSize = request.getParameter("maximumMessageSize"); String messageRetentionPeriod = request.getParameter("messageRetentionPeriod"); String delaySeconds = request.getParameter("delaySeconds"); String receiveMessageWaitTimeSeconds = request.getParameter("receiveMessageWaitTimeSeconds"); String numberOfPartitions = request.getParameter("numberOfPartitions"); String numberOfShards = request.getParameter("numberOfShards"); String isCompressed = request.getParameter("isCompressed"); try { Map<String, String> attributes = new HashMap<String, String>(); if (visibilityTimeout != null && !visibilityTimeout.equals("")) { attributes.put("VisibilityTimeout", visibilityTimeout); } if (maximumMessageSize != null && !maximumMessageSize.equals("")) { attributes.put("MaximumMessageSize", maximumMessageSize); } if (messageRetentionPeriod != null && !messageRetentionPeriod.equals("")) { attributes.put("MessageRetentionPeriod", messageRetentionPeriod); } if (delaySeconds != null && !delaySeconds.equals("")) { attributes.put("DelaySeconds", delaySeconds); } if (receiveMessageWaitTimeSeconds != null && !receiveMessageWaitTimeSeconds.equals("")) { attributes.put("ReceiveMessageWaitTimeSeconds", receiveMessageWaitTimeSeconds); } if (numberOfPartitions != null && !numberOfPartitions.equals("")) { attributes.put("NumberOfPartitions", numberOfPartitions); } if (numberOfPartitions != null && !numberOfPartitions.equals("")) { attributes.put("NumberOfShards", numberOfShards); } if (isCompressed != null && !isCompressed.equals("")) { attributes.put("IsCompressed", isCompressed); } SetQueueAttributesRequest setQueueAttributesRequest = new SetQueueAttributesRequest(queueUrl, attributes); sqs.setQueueAttributes(setQueueAttributesRequest); logger.debug("event=set_queue_attributes queue_ulr=" + queueUrl + " user_id= " + userId); } catch (Exception ex) { logger.error("event=set_queue_attributes queue_ulr=" + queueUrl + " user_id= " + userId, ex); throw new ServletException(ex); } out.println("<body onload='javascript:window.opener.location.reload();window.close();'>"); } else { String visibilityTimeout = ""; String maximumMessageSize = ""; String messageRetentionPeriod = ""; String delaySeconds = ""; String receiveMessageWaitTimeSeconds = ""; String numberOfPartitions = ""; String numberOfShards = ""; String isCompressed = ""; if (queueUrl != null) { Map<String, String> attributes = null; try { GetQueueAttributesRequest getQueueAttributesRequest = new GetQueueAttributesRequest(queueUrl); getQueueAttributesRequest .setAttributeNames(Arrays.asList("VisibilityTimeout", "MaximumMessageSize", "MessageRetentionPeriod", "DelaySeconds", "ReceiveMessageWaitTimeSeconds", "NumberOfPartitions", "NumberOfShards", "IsCompressed")); GetQueueAttributesResult getQueueAttributesResult = sqs .getQueueAttributes(getQueueAttributesRequest); attributes = getQueueAttributesResult.getAttributes(); visibilityTimeout = attributes.get("VisibilityTimeout"); maximumMessageSize = attributes.get("MaximumMessageSize"); messageRetentionPeriod = attributes.get("MessageRetentionPeriod"); delaySeconds = attributes.get("DelaySeconds"); receiveMessageWaitTimeSeconds = attributes.get("ReceiveMessageWaitTimeSeconds"); numberOfPartitions = attributes.get("NumberOfPartitions"); numberOfShards = attributes.get("NumberOfShards"); isCompressed = attributes.get("IsCompressed"); } catch (Exception ex) { logger.error("event=failed_to_get_attributes queue_url=" + queueUrl, ex); throw new ServletException(ex); } } out.println("<body>"); out.println("<h1>View/Edit Queue Attributes</h1>"); out.println("<h3>" + queueUrl + "</h3>"); out.println( "<form action=\"/webui/cqsuser/editqueueattributes?queueName=" + queueName + "\" method=POST>"); out.println("<input type='hidden' name='userId' value='" + userId + "'>"); out.println("<table>"); out.println("<tr><td colspan=2><b><font color='orange'>Queue Attributes</font></b></td></tr>"); out.println("<tr><td colspan=2><b>Apply these attributes to the queue:</b></td></tr>"); out.println( "<tr><td>Visibility Timeout:</td><td><input type='text' name='visibilityTimeout' size='50' value='" + visibilityTimeout + "'></td></tr>"); out.println("<tr><td> </td><td><I><font color='grey'>Default " + CMBProperties.getInstance().getCQSVisibilityTimeOut() + " sec</font></I></td></tr>"); out.println( "<tr><td>Maximum Message Size:</td><td><input type='text' name='maximumMessageSize' size='50' value='" + maximumMessageSize + "'></td></tr>"); out.println("<tr><td> </td><td><I><font color='grey'>Default " + CMBProperties.getInstance().getCQSMaxMessageSize() + " bytes</font></I></td></tr>"); out.println( "<tr><td>Message Retention Period:</td><td><input type='text' name='messageRetentionPeriod' size='50' value='" + messageRetentionPeriod + "'></td></tr>"); out.println("<tr><td> </td><td><I><font color='grey'>Default " + CMBProperties.getInstance().getCQSMessageRetentionPeriod() + " sec</font></I></td></tr>"); out.println("<tr><td>Delay Seconds:</td><td><input type='text' name='delaySeconds' size='50' value='" + delaySeconds + "'></td></tr>"); out.println("<tr><td> </td><td><I><font color='grey'>Default " + CMBProperties.getInstance().getCQSMessageDelaySeconds() + " sec</font></I></td></tr>"); out.println( "<tr><td>Receive Message Wait Time Seconds:</td><td><input type='text' name='receiveMessageWaitTimeSeconds' size='50' value='" + receiveMessageWaitTimeSeconds + "'></td></tr>"); out.println( "<tr><td> </td><td><I><font color='grey'>Default 0 sec, max 20 sec</font></I></td></tr>"); out.println( "<tr><td>Number Of Partitions:</td><td><input type='text' name='numberOfPartitions' size='50' value='" + numberOfPartitions + "'></td></tr>"); out.println( "<tr><td> </td><td><I><font color='grey'>Default 100, minimum 1 partition(s)</font></I></td></tr>"); out.println( "<tr><td>Number Of Shards:</td><td><input type='text' name='numberOfShards' size='50' value='" + numberOfShards + "'></td></tr>"); out.println( "<tr><td> </td><td><I><font color='grey'>Default 1, maximum 100 shards</font></I></td></tr>"); out.println("<tr><td>Compressed:</td><td><input type='text' name='isCompressed' size='50' value='" + isCompressed + "'></td></tr>"); out.println( "<tr><td> </td><td><I><font color='grey'>Valid values: true or false</font></I></td></tr>"); out.println("<tr><td> </td><td> </td></tr>"); out.println("<tr><td colspan=2><hr/></td></tr>"); out.println( "<tr><td colspan=2 align=right><input type='button' onclick='window.close()' value='Cancel'><input type='submit' name='Update' value='Update'></td></tr></table></form>"); } out.println("</body></html>"); CMBControllerServlet.valueAccumulator.deleteAllCounters(); } @Override public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }