1 files changed, 287 insertions, 0 deletions
diff --git a/pki/base/common/src/com/netscape/cms/servlet/base/SystemInfoServlet.java b/pki/base/common/src/com/netscape/cms/servlet/base/SystemInfoServlet.java
new file mode 100644
index 000000000..ac6889c09
--- /dev/null
+++ b/pki/base/common/src/com/netscape/cms/servlet/base/SystemInfoServlet.java
@@ -0,0 +1,287 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package com.netscape.cms.servlet.base;
+
+
+import com.netscape.cms.servlet.common.*;
+
+import java.util.*;
+import java.io.*;
+import java.security.cert.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+
+import com.netscape.certsrv.apps.*;
+import com.netscape.certsrv.authentication.*;
+import com.netscape.certsrv.base.*;
+import com.netscape.certsrv.profile.*;
+import com.netscape.certsrv.property.*;
+import com.netscape.certsrv.template.*;
+import com.netscape.certsrv.request.*;
+
+/**
+ * Displays detailed information about java VM internals, including
+ * current JVM memory usage, and detailed information about each
+ * thread.
+ * <p>
+ * Also allows user to trigger a new garbage collection
+ *
+ * @version $Revision$, $Date$
+ */
+public class SystemInfoServlet extends HttpServlet { 
+
+    public SystemInfoServlet() {
+    }
+
+    public void init(ServletConfig sc) throws ServletException {
+        super.init(sc);
+    }
+
+    /**
+     * service the request, returning HTML to the client.
+     * This method has different behaviour depending on the
+     * value of the 'op' HTTP parameter.
+     * <UL>
+     * <LI>op = <i>undefined</i> - display a menu with links to the other functionality of this servlet
+     * <li>op = gc - tell the JVM that we want to do a garbage collection and to run finalizers
+     *    (@see java.lang.Runtime.getRuntime#gc() )
+     * <li>op = general  - display information about memory, and other JVM informatino
+     * <li>op = thread  - display details about each thread.
+     * </UL>
+     * @see javax.servlet.http.HttpServlet#service(HttpServletRequest, HttpServletResponse)
+     */
+    public void service(HttpServletRequest request, 
+        HttpServletResponse response)
+        throws ServletException, IOException { 
+        boolean collect = false;
+        String op = request.getParameter("op");
+
+        response.setContentType("text/html");
+        if (op == null) {
+            mainMenu(request, response);
+        } else if (op.equals("gc")) {
+            gc(request, response);
+        } else if (op.equals("general")) {
+            general(request, response);
+        } else if (op.equals("thread")) {
+            thread(request, response);
+        }
+    }
+
+    private void mainMenu(HttpServletRequest request, 
+        HttpServletResponse response)
+        throws ServletException, IOException { 
+        response.getWriter().println("<HTML>");
+        response.getWriter().println("<H1>");
+        response.getWriter().println("<a href=" + request.getServletPath() + ">");
+        response.getWriter().println("Main");
+        response.getWriter().println("</a>");
+        response.getWriter().println("</H1>");
+        response.getWriter().println("<p>");
+        response.getWriter().println("<table>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<li>");
+        response.getWriter().println("<a href=" + request.getServletPath() + "?op=general>");
+        response.getWriter().println("General");
+        response.getWriter().println("</a>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<li>");
+        response.getWriter().println("<a href=" + request.getServletPath() + "?op=gc>");
+        response.getWriter().println("Garbage Collection");
+        response.getWriter().println("</a>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<li>");
+        response.getWriter().println("<a href=" + request.getServletPath() + "?op=thread>");
+        response.getWriter().println("Thread Listing");
+        response.getWriter().println("</a>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("</table>");
+        response.getWriter().println("</HTML>");
+    }
+
+    private void gc(HttpServletRequest request, 
+        HttpServletResponse response)
+        throws ServletException, IOException { 
+        java.lang.Runtime.getRuntime().gc();
+        java.lang.Runtime.getRuntime().runFinalization();
+        response.getWriter().println("<HTML>");
+        response.getWriter().println("<H1>");
+        response.getWriter().println("<a href=" + request.getServletPath() + ">");
+        response.getWriter().println("Main");
+        response.getWriter().println("</a>");
+        response.getWriter().println(" : ");
+        response.getWriter().println("Garbage Collection");
+        response.getWriter().println("</H1>");
+        response.getWriter().println("<p>");
+        response.getWriter().println("The garbage collector has been executed.");
+        response.getWriter().println("</HTML>");
+    }
+
+    private void general(HttpServletRequest request, 
+        HttpServletResponse response)
+        throws ServletException, IOException { 
+        response.getWriter().println("<HTML>");
+        response.getWriter().println("<H1>");
+        response.getWriter().println("<a href=" + request.getServletPath() + ">");
+        response.getWriter().println("Main");
+        response.getWriter().println("</a>");
+        response.getWriter().println(" : ");
+        response.getWriter().println("General");
+        response.getWriter().println("</H1>");
+        response.getWriter().println("<p>");
+        response.getWriter().println("<table>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Server Started Time:");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(new Date(CMS.getStartupTime()));
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Current Time:");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(new Date());
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Available Processors:");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(Runtime.getRuntime().availableProcessors());
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Active Threads:");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(Thread.activeCount());
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Max Memory (in Bytes):");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(Runtime.getRuntime().maxMemory());
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Total Memory (in Bytes):");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(Runtime.getRuntime().totalMemory());
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Free Memory (in Bytes):");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println(Runtime.getRuntime().freeMemory());
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("Free Memory / Total Memory:");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println((Runtime.getRuntime().freeMemory() * 100) / Runtime.getRuntime().totalMemory() + "%");
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        response.getWriter().println("</table>");
+        response.getWriter().println("</HTML>");
+    }
+
+    private void thread(HttpServletRequest request, 
+        HttpServletResponse response)
+        throws ServletException, IOException { 
+        response.getWriter().println("</table>");
+        response.getWriter().println("<HTML>");
+        response.getWriter().println("<H1>");
+        response.getWriter().println("<a href=" + request.getServletPath() + ">");
+        response.getWriter().println("Main");
+        response.getWriter().println("</a>");
+        response.getWriter().println(" : ");
+        response.getWriter().println("Thread Listing");
+        response.getWriter().println("</H1>");
+        response.getWriter().println("<p>");
+        response.getWriter().println("<table width=100% border=1>");
+        response.getWriter().println("<tr>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<b>");
+        response.getWriter().println("#");
+        response.getWriter().println("</b>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<b>");
+        response.getWriter().println("Name");
+        response.getWriter().println("</b>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<b>");
+        response.getWriter().println("Priority");
+        response.getWriter().println("</b>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("<td>");
+        response.getWriter().println("<b>");
+        response.getWriter().println("isDaemon");
+        response.getWriter().println("</b>");
+        response.getWriter().println("</td>");
+        response.getWriter().println("</tr>");
+        int active = Thread.activeCount();
+        Thread threads[] = new Thread[active];
+        int c = Thread.enumerate(threads);
+
+        for (int i = 0; i < c; i++) {
+            response.getWriter().println("<tr>");
+            response.getWriter().println("<td>");
+            response.getWriter().println(i);
+            response.getWriter().println("</td>");
+            response.getWriter().println("<td>");
+            response.getWriter().println(threads[i].getName());
+            response.getWriter().println("</td>");
+            response.getWriter().println("<td>");
+            response.getWriter().println(threads[i].getPriority());
+            response.getWriter().println("</td>");
+            response.getWriter().println("<td>");
+            if (threads[i].isDaemon()) {
+                response.getWriter().println("true");
+            } else {
+                response.getWriter().println("false");
+            }
+            response.getWriter().println("</td>");
+            response.getWriter().println("</tr>");
+        }
+        response.getWriter().println("</table>");
+        response.getWriter().println("</HTML>");
+    }
+}