package org.autoplot.servlet;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Locale;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.autoplot.ApplicationModel;
import org.autoplot.AutoplotUtil;
import org.autoplot.dom.Application;
/**
* servlet for reporting version information. This should be
* updated manually before adding and releasing new features.
* @author faden@cottagesystems.com
*/
public class ServletInfo extends HttpServlet {
private static final long birthMilli= System.currentTimeMillis();
public static final String version = "v20230228.1906";
public static long getAgeMillis() {
return System.currentTimeMillis() - birthMilli;
}
/**
* return the duration in a easily-human-consumable form.
* @param dt the duration in milliseconds.
* @return a duration like "2.6 hours"
*/
public static String getDurationForHumans( long dt ) {
if ( dt<100 ) {
return "just now";
} else if ( dt<2*1000 ) {
return dt+" milliseconds";
} else if ( dt<2*60000 ) {
return String.format( Locale.US, "%.1f",dt/1000.)+" seconds";
} else if ( dt<2*3600000 ) {
return String.format( Locale.US, "%.1f",dt/60000.)+" minutes";
} else if ( dt<2*86400000 ) {
return String.format( Locale.US, "%.1f",dt/3600000.)+" hours";
} else {
return String.format( Locale.US, "%.1f",dt/86400000.)+" days";
}
}
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. You may use following sample code. */
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Autoplot Servlet ServletInfo</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet ServletInfo at " + request.getContextPath() + "</h1>");
boolean isHostPrivileged= false;
try {
SecurityUtil.checkAllowed(request);
isHostPrivileged= true;
} catch ( SecurityException ex ) {
}
if ( !isHostPrivileged ) {
out.println("<h2>You do not have access to see all information.\n</h2>");
}
ApplicationModel appmodel = new ApplicationModel();
if ( isHostPrivileged ) {
String st= AutoplotUtil.getAboutAutoplotHtml(appmodel);
out.println(st);
} else {
}
out.println("<h2>Options</h2>");
Application dom = appmodel.getDocumentModel();
out.println("displayLogLevel: "+dom.getOptions().getDisplayLogLevel());
out.println("<br>printingLogLevel: "+dom.getOptions().getPrintingLogLevel());
out.println("<br>printingTag: "+dom.getOptions().getPrintingTag());
out.println("<h2>Servlet Info</h2>");
out.println("servlet version: "+version+"<br>");
out.println("servlet uptime: "+getDurationForHumans(getAgeMillis())+"<br>");
if ( isHostPrivileged ) {
out.println("<br>user.name: "+ System.getProperty("user.name") + "\n");
out.println("<br>java.home: "+ System.getProperty("java.home") + "\n");
out.println("<br>user.home: "+ System.getProperty("user.home") + "\n");
out.println("<p>PWD: "+ ( new File(".").getAbsolutePath() ) +"\n" );
out.println("<br>Servlet Home: "+ServletUtil.getServletHome() + "\n");
File sd= ServletUtil.getServletHome();
out.println("<br>Cache Directory: " +getCacheDirectory() +"\n" );
File ff= new File( sd, "whitelist.txt" );
out.println("<h2>Whitelist File</h2>\n");
out.println("Whitelist File: "+ff+"<br>");
out.println("<ul>");
List<String> ss= ServletUtil.getWhiteList();
for ( String s1: ss ) {
out.println("<li>"+s1+"\n");
}
if ( ss.isEmpty() ) {
out.println("<li>(whitelist is empty)\n");
}
out.println("</ul>");
}
out.println("Contact Info: "+ServletUtil.getServletContact()+"</sm>");
out.println("</p></body>");
out.println("</html>");
}
}
/**
* return true if we can cache requests.
* @return
*/
public static boolean isCaching() {
return true;
}
private static volatile File cacheDirectory=null;
/**
* return the location of the cache which this server will use, a directory
* in /tmp/apsrv.
* @return
*/
public static File getCacheDirectory() {
File cd0 = ServletInfo.cacheDirectory;
if ( cd0==null ) {
synchronized (ServletInfo.class) {
cd0 = ServletInfo.cacheDirectory;
if ( cd0==null ) {
if ( !new File("/tmp/apsrv/").exists() ) {
if ( ! new File("/tmp/apsrv/").mkdirs() ) {
throw new IllegalArgumentException("unable to make apsrv directory: /tmp/apsrv");
}
}
File cd= new File("/tmp/apsrv/cache/" + AutoplotUtil.getProcessId("000") );
if ( !cd.exists() ) {
if ( !cd.mkdirs() ) {
throw new IllegalArgumentException("fail to make cache directory: "+cd);
}
}
ServletInfo.cacheDirectory= cd0 = cd;
}
}
}
return cd0;
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}