wamblee.org Git - utils/blob - crawler/kissweb/src/main/java/org/wamblee/crawler/kiss/servlet/CrawlerServlet.java

   1 /*
   2  * Copyright 2006 the original author or authors.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.wamblee.crawler.kiss.servlet;
  18
  19 import java.io.IOException;
  20 import java.io.OutputStream;
  21
  22 import javax.servlet.ServletException;
  23 import javax.servlet.http.HttpServlet;
  24 import javax.servlet.http.HttpServletRequest;
  25 import javax.servlet.http.HttpServletResponse;
  26
  27 import org.wamblee.crawler.kiss.main.Report;
  28 import org.wamblee.crawler.kiss.notification.Notifier;
  29 import org.wamblee.crawler.kiss.scheduling.CrawlerScheduler;
  30 import org.wamblee.crawler.kiss.scheduling.CrawlerStatus;
  31 import org.wamblee.general.BeanKernel;
  32
  33 /**
  34  *
  35  *
  36  * @author Erik Brakkee
  37  */
  38 public class CrawlerServlet extends HttpServlet {
  39
  40     /*
  41      * (non-Javadoc)
  42      *
  43      * @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest,
  44      *      javax.servlet.http.HttpServletResponse)
  45      */
  46     @Override
  47     protected void doPost(HttpServletRequest aRequest,
  48             HttpServletResponse aResponse) throws ServletException, IOException {
  49
  50         CrawlerScheduler scheduler = BeanKernel.getBeanFactory().find(
  51                 CrawlerScheduler.class);
  52         CrawlerStatus status = BeanKernel.getBeanFactory().find(
  53                 CrawlerStatus.class);
  54
  55         try {
  56             if (aRequest.getParameter("details") != null) {
  57                 Report report = status.getLastReport();
  58                 if (report != null) {
  59                     Notifier notifier = BeanKernel.getBeanFactory().find(Notifier.class);
  60                     aResponse.setContentType("text/html");
  61                     OutputStream os = aResponse.getOutputStream();
  62                     os.write(notifier.asHtml(report.asXml()).getBytes());
  63                     return;
  64                 }
  65             }
  66             if (aRequest.getParameter("runnow") != null) {
  67                 status.setMustExecute(true);
  68                 scheduler.scheduleNow();
  69                 aResponse.sendRedirect("");
  70                 return;
  71             }
  72             aRequest.setAttribute("running", scheduler.isCrawlerRunning());
  73             aRequest.setAttribute("lastExecuted", status.getLastExecuted());
  74             aRequest.setAttribute("lastResult", status.getLastResult());
  75             aRequest.setAttribute("lastException", status.getLastException());
  76             aRequest.setAttribute("lastReport", status.getLastReport());
  77             String msg = "";
  78             Throwable e = status.getLastException();
  79             while (e != null) {
  80                 msg = msg + e.getClass().getName() + ": " + e.getMessage()
  81                         + "<br/>";
  82                 e = e.getCause();
  83             }
  84             aRequest.setAttribute("lastMessage", msg);
  85         } catch (Exception e) {
  86             throw new ServletException("Error getting status", e);
  87         }
  88         aRequest.getRequestDispatcher("WEB-INF/overview.jsp").forward(aRequest,
  89                 aResponse);
  90     }
  91
  92     /*
  93      * (non-Javadoc)
  94      *
  95      * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest,
  96      *      javax.servlet.http.HttpServletResponse)
  97      */
  98     @Override
  99     protected void doGet(HttpServletRequest aRequest,
 100             HttpServletResponse aResponse) throws ServletException, IOException {
 101         doPost(aRequest, aResponse);
 102     }
 103 }