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 import java.util.Collections;\r
   9 \r
  10 import javax.servlet.RequestDispatcher;\r
  11 import javax.servlet.ServletException;\r
  12 import javax.servlet.http.HttpServlet;\r
  13 import javax.servlet.http.HttpServletRequest;\r
  14 import javax.servlet.http.HttpServletResponse;\r
  15 import javax.servlet.ServletContext;\r
  16 \r
  17 import org.apache.log4j.Logger;\r
  18 \r
  19 import compbio.stat.servlet.util.Totals;\r
  20 import compbio.ws.client.Services;\r
  21 import compbio.ws.client.WSTester;\r
  22 \r
  23 /**\r
  24  * Use cases:\r
  25  * <dl>\r
  26  * <li>Test web services and display results on the web page</li>\r
  27  * </dl>\r
  28  * \r
  29  * @author pvtroshin\r
  30  * \r
  31  */\r
  32 public class ServiceStatus extends HttpServlet {\r
  33 \r
  34         private final static Logger log = Logger.getLogger(ServiceStatus.class);\r
  35 \r
  36 \r
  37         private static String getURL(HttpServletRequest req) {\r
  38                 String scheme = req.getScheme();             // http\r
  39                 String serverName = req.getServerName();     // hostname.com\r
  40                 int serverPort = req.getServerPort();        // 80\r
  41                 String contextPath = req.getContextPath();   // /mywebapp\r
  42                 String servletPath = req.getServletPath();   // /servlet/MyServlet\r
  43                 String pathInfo = req.getPathInfo();         // /a/b;c=123\r
  44                 String queryString = req.getQueryString();          // d=789\r
  45 \r
  46                 // Reconstruct original requesting URL\r
  47                 StringBuffer url =  new StringBuffer();\r
  48                 url.append(scheme).append("://").append(serverName);\r
  49 \r
  50                 if ((serverPort != 80) && (serverPort != 443)) {\r
  51                         url.append(":").append(serverPort);\r
  52                 }\r
  53 \r
  54                 url.append(contextPath).append(servletPath);\r
  55 \r
  56                 if (pathInfo != null) {\r
  57                         url.append(pathInfo);\r
  58                 }\r
  59                 if (queryString != null) {\r
  60                         url.append("?").append(queryString);\r
  61                 }\r
  62                 return url.toString();\r
  63         }\r
  64 \r
  65         @Override\r
  66         protected void doGet(HttpServletRequest req, HttpServletResponse resp)\r
  67                         throws ServletException, IOException {\r
  68                 StringBuffer jabawspath = req.getRequestURL();\r
  69                 jabawspath = jabawspath.delete(jabawspath.lastIndexOf("/"), jabawspath.length());\r
  70                 String serverPath = jabawspath.toString();\r
  71 /**\r
  72                 String host = java.net.InetAddress.getLocalHost().getCanonicalHostName();\r
  73                 System.out.println("Testing services at " + req.getRequestURL()); \r
  74                 System.out.println("Really: Testing services at " + serverPath); \r
  75                 System.out.println("      serverPath2 is " + getURL(req)); \r
  76                 System.out.println("      Context Path is " + req.getContextPath()); \r
  77                 System.out.println("      Host is " + host); \r
  78                 System.out.println("      Request URI is " + req.getRequestURI());\r
  79                 System.out.println("      Servlet Path is " + req.getServletPath());\r
  80                 System.out.println("      Path Info is " + req.getPathInfo());\r
  81                 System.out.println("      Local Port is " + req.getLocalPort());\r
  82                 System.out.println("      Remote Port is " + req.getRemotePort());\r
  83                 System.out.println("      Local address is " + req.getLocalAddr());\r
  84                 System.out.println("      Remote address is " + req.getRemoteAddr());\r
  85                 @SuppressWarnings("unchecked")\r
  86                 List<String> list = Collections.list(req.getHeaderNames());\r
  87                 System.out.println("      HTTP header names are " + list.toString());\r
  88                 for (String hdr : list) {\r
  89                         System.out.println("      " + hdr + " header is " + req.getHeader(hdr));\r
  90                 }\r
  91 */\r
  92                 List<ServiceTestResult> testResults = new ArrayList<ServiceTestResult>();\r
  93                 long startTime = System.nanoTime();\r
  94                 for (Services service : Services.values()) {\r
  95                         StringWriter testres = new StringWriter();\r
  96                         PrintWriter writer = new PrintWriter(testres, true);\r
  97                         WSTester tester = new WSTester(serverPath, writer);\r
  98                         ServiceTestResult result = new ServiceTestResult(service);\r
  99                         try {\r
 100                                 result.failed = tester.checkService(service);\r
 101                         } catch (Exception e) {\r
 102                                 log.info(e, e.getCause());\r
 103                                 String mess = "Fails to connect to the web service: " + service + ". Reason: ";\r
 104                                 writer.println(mess + e.getLocalizedMessage() + "\nDetails: ");\r
 105                                 e.printStackTrace(writer);\r
 106                         } finally {\r
 107                                 writer.close();\r
 108                         }\r
 109                         result.details = testres.toString();\r
 110                         testResults.add(result);\r
 111                 }\r
 112                 req.setAttribute("results", testResults);\r
 113                 long endTime = System.nanoTime();\r
 114                 req.setAttribute("timeexec", (endTime - startTime) / 1000000);\r
 115                 RequestDispatcher rd = req.getRequestDispatcher("statpages/ServicesStatus.jsp");\r
 116                 rd.forward(req, resp);\r
 117         }\r
 118 \r
 119 }\r