webservices/compbio/stat/servlet/ServiceStatus.java

   1 package compbio.stat.servlet;\r
   2 \r
   3 import java.io.IOException;\r
   4 import java.io.PrintWriter;\r
   5 import java.io.StringWriter;\r
   6 import java.util.ArrayList;\r
   7 import java.util.List;\r
   8 \r
   9 import javax.servlet.RequestDispatcher;\r
  10 import javax.servlet.ServletException;\r
  11 import javax.servlet.http.HttpServlet;\r
  12 import javax.servlet.http.HttpServletRequest;\r
  13 import javax.servlet.http.HttpServletResponse;\r
  14 \r
  15 import org.apache.log4j.Logger;\r
  16 \r
  17 import compbio.ws.client.Services;\r
  18 import compbio.ws.client.WSTester;\r
  19 \r
  20 /**\r
  21  * Use cases:\r
  22  * <dl>\r
  23  * <li>Test web services and display results on the web page</li>\r
  24  * </dl>\r
  25  * \r
  26  * @author pvtroshin\r
  27  * \r
  28  */\r
  29 public class ServiceStatus extends HttpServlet {\r
  30 \r
  31         private final static Logger log = Logger.getLogger(ServiceStatus.class);\r
  32 \r
  33         @Override\r
  34         protected void doGet(HttpServletRequest req, HttpServletResponse resp)\r
  35                         throws ServletException, IOException {\r
  36 \r
  37                 StringBuffer jabawspath = req.getRequestURL();\r
  38                 jabawspath = jabawspath.delete(jabawspath.lastIndexOf("/"),\r
  39                                 jabawspath.length());\r
  40                 String serverPath = jabawspath.toString();\r
  41 \r
  42                 List<ServiceTestResult> testResults = new ArrayList<ServiceTestResult>();\r
  43 \r
  44                 for (Services service : Services.values()) {\r
  45                         StringWriter testres = new StringWriter();\r
  46                         PrintWriter writer = new PrintWriter(testres, true);\r
  47                         WSTester tester = new WSTester(serverPath, writer);\r
  48                         ServiceTestResult result = new ServiceTestResult(service);\r
  49                         try {\r
  50                                 result.failed = tester.checkService(service);\r
  51                         } catch (Exception e) {\r
  52                                 log.info(e, e.getCause());\r
  53                                 writer.println("Fails to connect to a web service: " + service\r
  54                                                 + " With " + e.getLocalizedMessage() + "\nDetails: ");\r
  55                                 e.printStackTrace(writer);\r
  56                         } finally {\r
  57                                 writer.close();\r
  58                         }\r
  59                         result.details = testres.toString();\r
  60                         testResults.add(result);\r
  61                 }\r
  62                 req.setAttribute("results", testResults);\r
  63                 RequestDispatcher rd = req\r
  64                                 .getRequestDispatcher("statpages/ServicesStatus.jsp");\r
  65                 rd.forward(req, resp);\r
  66         }\r
  67 \r
  68 }\r