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  * <li>Test web service or services by the user request</li>\r
  25  * </dl>\r
  26  * \r
  27  * @author pvtroshin\r
  28  * \r
  29  */\r
  30 public class ServiceStatus extends HttpServlet {\r
  31 \r
  32         private final static Logger log = Logger.getLogger(ServiceStatus.class);\r
  33 \r
  34         @Override\r
  35         protected void doGet(HttpServletRequest req, HttpServletResponse resp)\r
  36                         throws ServletException, IOException {\r
  37 \r
  38                 StringBuffer jabawspath = req.getRequestURL();\r
  39                 jabawspath = jabawspath.delete(jabawspath.lastIndexOf("/"),\r
  40                                 jabawspath.length());\r
  41                 String serverPath = jabawspath.toString();\r
  42 \r
  43                 List<ServiceTestResult> testResults = new ArrayList<ServiceTestResult>();\r
  44 \r
  45                 for (Services service : Services.values()) {\r
  46                         StringWriter testres = new StringWriter();\r
  47                         PrintWriter writer = new PrintWriter(testres, true);\r
  48                         WSTester tester = new WSTester(serverPath, writer);\r
  49                         ServiceTestResult result = new ServiceTestResult(service);\r
  50                         try {\r
  51                                 result.failed = tester.checkService(service);\r
  52                         } catch (Exception e) {\r
  53                                 log.info(e, e.getCause());\r
  54                                 writer.println("Fails to connect to a web service: " + service\r
  55                                                 + " With " + e.getLocalizedMessage() + "\nDetails: ");\r
  56                                 e.printStackTrace(writer);\r
  57                         } finally {\r
  58                                 writer.close();\r
  59                         }\r
  60                         result.details = testres.toString();\r
  61                         testResults.add(result);\r
  62                 }\r
  63                 req.setAttribute("results", testResults);\r
  64                 RequestDispatcher rd = req\r
  65                                 .getRequestDispatcher("statpages/ServicesStatus.jsp");\r
  66                 rd.forward(req, resp);\r
  67         }\r
  68 \r
  69 }\r