Initial version. JM-914

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@6403 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/wildfire/commands/admin/GetServerStats.java

+package org.jivesoftware.wildfire.commands.admin;
+
+import org.dom4j.Element;
+import org.jivesoftware.admin.AdminConsole;
+import org.jivesoftware.util.FastDateFormat;
+import org.jivesoftware.util.JiveConstants;
+import org.jivesoftware.util.LocaleUtils;
+import org.jivesoftware.wildfire.ClientSession;
+import org.jivesoftware.wildfire.SessionManager;
+import org.jivesoftware.wildfire.XMPPServer;
+import org.jivesoftware.wildfire.commands.AdHocCommand;
+import org.jivesoftware.wildfire.commands.SessionData;
+import org.jivesoftware.wildfire.component.InternalComponentManager;
+import org.xmpp.forms.DataForm;
+import org.xmpp.forms.FormField;
+import org.xmpp.packet.JID;
+
+import java.text.DecimalFormat;
+import java.util.*;
+
+/**
+ * Command that returns information about the server and some basic statistics. This command
+ * can only be executed by administrators or components of the server.
+ *
+ * TODO Use i18n
+ * 
+ * @author Gaston Dombiak
+ */
+public class GetServerStats extends AdHocCommand {
+    final private FastDateFormat dateFormat = FastDateFormat.getInstance(JiveConstants.XMPP_DATETIME_FORMAT, TimeZone.getTimeZone("UTC"));
+
+    protected void addStageInformation(SessionData data, Element command) {
+        //Do nothing since there are no stages
+    }
+
+    public void execute(SessionData data, Element command) {
+        DataForm form = new DataForm(DataForm.Type.result);
+
+        FormField field = form.addField();
+        field.setType(FormField.Type.hidden);
+        field.setVariable("FORM_TYPE");
+        field.addValue("http://jabber.org/protocol/admin");
+
+        field = form.addField();
+        field.setLabel(LocaleUtils.getLocalizedString("index.server_name"));
+        field.setVariable("name");
+        field.addValue(AdminConsole.getAppName());
+
+        field = form.addField();
+        field.setLabel(LocaleUtils.getLocalizedString("index.version"));
+        field.setVariable("version");
+        field.addValue(AdminConsole.getVersionString());
+
+        field = form.addField();
+        field.setLabel(LocaleUtils.getLocalizedString("index.domain_name"));
+        field.setVariable("domain");
+        field.addValue(XMPPServer.getInstance().getServerInfo().getName());
+
+        field = form.addField();
+        field.setLabel(LocaleUtils.getLocalizedString("index.jvm"));
+        field.setVariable("os");
+        String vmName = System.getProperty("java.vm.name");
+        if (vmName == null) {
+            vmName = "";
+        }
+        else {
+            vmName = " -- " + vmName;
+        }
+        field.addValue(System.getProperty("java.version") + " " +System.getProperty("java.vendor") +vmName);
+
+        field = form.addField();
+        field.setLabel(LocaleUtils.getLocalizedString("index.uptime"));
+        field.setVariable("uptime");
+        field.addValue(dateFormat.format(XMPPServer.getInstance().getServerInfo().getLastStarted()));
+
+        DecimalFormat mbFormat = new DecimalFormat("#0.00");
+        DecimalFormat percentFormat = new DecimalFormat("#0.0");
+        Runtime runtime = Runtime.getRuntime();
+        double freeMemory = (double)runtime.freeMemory()/(1024*1024);
+        double maxMemory = (double)runtime.maxMemory()/(1024*1024);
+        double totalMemory = (double)runtime.totalMemory()/(1024*1024);
+        double usedMemory = totalMemory - freeMemory;
+        double percentFree = ((maxMemory - usedMemory)/maxMemory)*100.0;
+        double percentUsed = 100 - percentFree;
+        field = form.addField();
+        field.setLabel(LocaleUtils.getLocalizedString("index.memory"));
+        field.setVariable("memory");
+        field.addValue(mbFormat.format(usedMemory) + " MB of " + mbFormat.format(maxMemory) + " MB (" +
+                percentFormat.format(percentUsed) + "%) used");
+
+        // Make sure that we are only counting based on bareJIDs and not fullJIDs
+        Collection<ClientSession> sessions = SessionManager.getInstance().getSessions();
+        Set<String> users = new HashSet<String>(sessions.size());
+        int availableSessions = 0;
+        for (ClientSession session : sessions) {
+            if (session.getPresence().isAvailable()) {
+                users.add(session.getAddress().toBareJID());
+                availableSessions++;
+            }
+        }
+        field = form.addField();
+        field.setLabel("Available Users");
+        field.setVariable("activeusersnum");
+        field.addValue(users.size());
+
+        field = form.addField();
+        field.setLabel("Available Users Sessions");
+        field.setVariable("sessionsnum");
+        field.addValue(availableSessions);
+
+        command.add(form.getElement());
+    }
+
+    protected List<Action> getActions(SessionData data) {
+        //Do nothing since there are no stages
+        return null;
+    }
+
+    public String getCode() {
+        return "http://jabber.org/protocol/admin#get-server-stats";
+    }
+
+    public String getDefaultLabel() {
+        return "Get basic statistics of the server.";
+    }
+
+    protected Action getExecuteAction(SessionData data) {
+        //Do nothing since there are no stages
+        return null;
+    }
+
+    public int getMaxStages(SessionData data) {
+        return 0;
+    }
+
+    /**
+     * Returns if the requester can access this command. Only admins and components
+     * are allowed to execute this command.
+     *
+     * @param requester the JID of the user requesting to execute this command.
+     * @return true if the requester can access this command.
+     */
+    public boolean hasPermission(JID requester) {
+        return super.hasPermission(requester) || InternalComponentManager.getInstance().getComponent(requester) != null;
+    }
+}