webservices/compbio/stat/servlet/ServiceStatus.java

   1 /* Copyright (c) 2013 Alexander Sherstnev\r
   2  * Copyright (c) 2011 Peter Troshin\r
   3  *  \r
   4  *  JAva Bioinformatics Analysis Web Services (JABAWS) @version: 2.0     \r
   5  * \r
   6  *  This library is free software; you can redistribute it and/or modify it under the terms of the\r
   7  *  Apache License version 2 as published by the Apache Software Foundation\r
   8  * \r
   9  *  This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without\r
  10  *  even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Apache \r
  11  *  License for more details.\r
  12  * \r
  13  *  A copy of the license is in apache_license.txt. It is also available here:\r
  14  * @see: http://www.apache.org/licenses/LICENSE-2.0.txt\r
  15  * \r
  16  * Any republication or derived work distributed in source code form\r
  17  * must include this copyright and license notice.\r
  18  */\r
  19 \r
  20 package compbio.stat.servlet;\r
  21 \r
  22 import java.io.IOException;\r
  23 import java.io.PrintWriter;\r
  24 import java.io.StringWriter;\r
  25 import java.lang.management.ManagementFactory;\r
  26 import java.net.InetAddress;\r
  27 import java.net.UnknownHostException;\r
  28 import java.util.ArrayList;\r
  29 import java.util.Iterator;\r
  30 import java.util.List;\r
  31 import java.util.Set;\r
  32 import java.util.Collections;\r
  33 \r
  34 import javax.management.AttributeNotFoundException;\r
  35 import javax.management.InstanceNotFoundException;\r
  36 import javax.management.MBeanException;\r
  37 import javax.management.MBeanServer;\r
  38 import javax.management.MalformedObjectNameException;\r
  39 import javax.management.ObjectName;\r
  40 import javax.management.Query;\r
  41 import javax.management.ReflectionException;\r
  42 import javax.servlet.RequestDispatcher;\r
  43 import javax.servlet.ServletException;\r
  44 import javax.servlet.http.HttpServlet;\r
  45 import javax.servlet.http.HttpServletRequest;\r
  46 import javax.servlet.http.HttpServletResponse;\r
  47 \r
  48 import org.apache.log4j.Logger;\r
  49 \r
  50 import compbio.ws.client.Services;\r
  51 import compbio.ws.client.WSTester;\r
  52 \r
  53 /**\r
  54  * Use cases:\r
  55  * <dl>\r
  56  * <li>Test web services and display results on the web page</li>\r
  57  * </dl>\r
  58  * \r
  59  * @author pvtroshin\r
  60  * \r
  61  */\r
  62 \r
  63 public class ServiceStatus extends HttpServlet {\r
  64 \r
  65         private final static Logger log = Logger.getLogger(ServiceStatus.class);\r
  66 \r
  67         private List<String> getEndPoints() throws MalformedObjectNameException, NullPointerException, UnknownHostException,\r
  68                         AttributeNotFoundException, InstanceNotFoundException, MBeanException, ReflectionException {\r
  69                 MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();\r
  70                 Set<ObjectName> objs = mbs.queryNames(new ObjectName("*:type=Connector,*"),\r
  71                                 Query.match(Query.attr("protocol"), Query.value("HTTP/1.1")));\r
  72                 List<String> endPoints = new ArrayList<String>();\r
  73                 for (Iterator<ObjectName> i = objs.iterator(); i.hasNext();) {\r
  74                         ObjectName obj = i.next();\r
  75                         String scheme = mbs.getAttribute(obj, "scheme").toString();\r
  76                         String port = obj.getKeyProperty("port");\r
  77                         String hostname = InetAddress.getLocalHost().getHostName();\r
  78                         endPoints.add(scheme + "://" + hostname + ":" + port);\r
  79                 }\r
  80                 return endPoints;\r
  81         }\r
  82 \r
  83         @Override\r
  84         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\r
  85                 /**\r
  86                  * // PROBLEM: the code tries to test not WS endpoints on an internal\r
  87                  * Tomcat, but on an external // endpoints with wrong info on the\r
  88                  * proxing StringBuffer jabawspath = req.getRequestURL(); jabawspath =\r
  89                  * jabawspath.delete(jabawspath.lastIndexOf("/"), jabawspath.length());\r
  90                  * String serverPath = jabawspath.toString();\r
  91                  */\r
  92                 List<String> eps = new ArrayList<String>();\r
  93                 try {\r
  94                         eps = getEndPoints();\r
  95                 } catch (MalformedObjectNameException e) {\r
  96                         // TODO Auto-generated catch block\r
  97                         e.printStackTrace();\r
  98                 } catch (AttributeNotFoundException e) {\r
  99                         // TODO Auto-generated catch block\r
 100                         e.printStackTrace();\r
 101                 } catch (InstanceNotFoundException e) {\r
 102                         // TODO Auto-generated catch block\r
 103                         e.printStackTrace();\r
 104                 } catch (NullPointerException e) {\r
 105                         // TODO Auto-generated catch block\r
 106                         e.printStackTrace();\r
 107                 } catch (MBeanException e) {\r
 108                         // TODO Auto-generated catch block\r
 109                         e.printStackTrace();\r
 110                 } catch (ReflectionException e) {\r
 111                         // TODO Auto-generated catch block\r
 112                         e.printStackTrace();\r
 113                 }\r
 114                 if (1 != eps.size()) {\r
 115                         log.info(eps.size() + "EndPoints found");\r
 116                         //System.out.println("      " + eps.size() + " EndPoints found");\r
 117                         for (String endpoint : eps) {\r
 118                                 log.info(eps.size() + "EndPoint is " + endpoint);\r
 119                                 //System.out.println("   EndPoint is " + endpoint);\r
 120                         }\r
 121                 }\r
 122 \r
 123                 String serverPath = new String();\r
 124                 for (String endpoint : eps) {\r
 125                         serverPath = endpoint + req.getContextPath();\r
 126                 }\r
 127                 //System.out.println("Testing services at " + serverPath);\r
 128 \r
 129                 List<ServiceTestResult> testResults = new ArrayList<ServiceTestResult>();\r
 130                 long startTime = System.nanoTime();\r
 131                 for (Services service : Services.values()) {\r
 132                         StringWriter testres = new StringWriter();\r
 133                         PrintWriter writer = new PrintWriter(testres, true);\r
 134                         WSTester tester = new WSTester(serverPath, writer);\r
 135                         ServiceTestResult result = new ServiceTestResult(service);\r
 136                         try {\r
 137                                 result.failed = tester.checkService(service);\r
 138                         } catch (Exception e) {\r
 139                                 log.info(e, e.getCause());\r
 140                                 String mess = "Fails to connect to the web service: " + service + ". Reason: ";\r
 141                                 writer.println(mess + e.getLocalizedMessage() + "\nDetails: ");\r
 142                                 e.printStackTrace(writer);\r
 143                         } finally {\r
 144                                 writer.close();\r
 145                         }\r
 146                         result.details = testres.toString();\r
 147                         testResults.add(result);\r
 148                 }\r
 149                 req.setAttribute("results", testResults);\r
 150                 long endTime = System.nanoTime();\r
 151                 req.setAttribute("timeexec", (endTime - startTime) / 1000000);\r
 152                 RequestDispatcher rd = req.getRequestDispatcher("statpages/ServicesStatus.jsp");\r
 153                 rd.forward(req, resp);\r
 154         }\r
 155 \r
 156 }\r