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import java.util.HashMap;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.management.*;
import javax.management.remote.*;
import javax.management.openmbean.CompositeData;
import com.sun.messaging.AdminConnectionFactory;
import com.sun.messaging.AdminConnectionConfiguration;
import com.sun.messaging.jms.management.server.*;
public class MQClusterMonitor implements ActionListener, Runnable {
JFrame f;
MQConnectDialog connectDialog = null;
JMenuItem exit, connect, disconnect;
JTextArea logMsgArea, statusTextArea;
JLabel brokerAddress;
JTable clsTable;
String address = null, adminUser = "admin", adminPasswd = "admin";
boolean stopRequested = false;
long seconds = 2;
AdminConnectionFactory acf;
JMXConnector jmxc;
MBeanServerConnection mbsc;
ObjectName clsMon = null;
NotificationFilterSupport myFilter = null;
public MQClusterMonitor(JFrame f, String address, String adminUser, String adminPasswd, long seconds) {
this.f = f;
this.address = address;
this.adminUser = adminUser;
this.adminPasswd = adminPasswd;
this.seconds = seconds;
try {
clsMon = new ObjectName(MQObjectName.CLUSTER_MONITOR_MBEAN_NAME);
} catch (Exception e) {
addStatusText("Caught exception while creating Log MBean ObjectName: " + e);
}
initGUI();
if ((address != null) && (adminUser != null) && (adminPasswd != null)) {
doConnect();
}
}
public synchronized void requestStop() {
stopRequested = true;
ClusterTableModel m = (ClusterTableModel) clsTable.getModel();
m.load(null);
}
public synchronized void resetStop() {
stopRequested = false;
}
public synchronized boolean stopRequested() {
return (stopRequested);
}
public void run() {
addStatusText("Monitor thread started (refresh interval = " + seconds + " seconds).");
while (true) {
try {
Thread.sleep(seconds * 1000);
if (stopRequested()) {
addStatusText("Monitor thread stopped");
break;
}
} catch (java.lang.InterruptedException ie) {
addStatusText("Exception caught while waiting to reload: " + ie);
}
load();
}
}
public void load() {
try {
CompositeData cd[] = (CompositeData[]) mbsc.invoke(clsMon, ClusterOperations.GET_BROKER_INFO, null, null);
ClusterTableModel m = (ClusterTableModel) clsTable.getModel();
m.load(cd);
} catch (Exception e) {
addStatusText("Exception caught while reloading data: " + e);
e.printStackTrace();
}
}
private void initGUI() {
JMenuBar menubar = createMenubar();
JComponent toolbar = createToolBar();
JPanel mainPanel = createMainPanel();
JPanel statusArea = createStatusArea();
f.setJMenuBar(menubar);
f.getContentPane().add(toolbar, BorderLayout.NORTH);
f.getContentPane().add(mainPanel, BorderLayout.CENTER);
f.getContentPane().add(statusArea, BorderLayout.SOUTH);
}
public void addStatusText(String statusText) {
statusTextArea.append(statusText);
statusTextArea.setCaretPosition(statusTextArea.getText().length());
statusTextArea.append("\n");
}
public void clearStatus() {
statusTextArea.setText("");
}
public void doConnect() {
try {
acf = new AdminConnectionFactory();
if (address != null) {
acf.setProperty(AdminConnectionConfiguration.imqAddress, address);
}
jmxc = acf.createConnection(adminUser, adminPasswd);
mbsc = jmxc.getMBeanServerConnection();
addStatusText("Connected to broker at: " + acf.getProperty(AdminConnectionConfiguration.imqAddress));
brokerAddress.setText(acf.getProperty(AdminConnectionConfiguration.imqAddress));
resetStop();
new Thread(this).start();
connect.setEnabled(false);
disconnect.setEnabled(true);
} catch (Exception e) {
addStatusText("Caught exception while connecting: " + e);
}
}
public void doDisconnect() {
try {
requestStop();
addStatusText("Disconnecting from broker at: " + acf.getProperty(AdminConnectionConfiguration.imqAddress));
brokerAddress.setText("<none>");
if (jmxc != null) {
jmxc.close();
}
jmxc = null;
mbsc = null;
acf = null;
connect.setEnabled(true);
disconnect.setEnabled(false);
} catch (Exception e) {
addStatusText("Caught exception while disconnecting: " + e);
}
}
private JMenuBar createMenubar() {
JMenuBar menubar;
JMenu menu, logLevelMenu;
menubar = new JMenuBar();
menu = new JMenu("ClusterMonitor");
menubar.add(menu);
connect = new JMenuItem("Connect");
connect.addActionListener(this);
menu.add(connect);
disconnect = new JMenuItem("Disconnect");
disconnect.addActionListener(this);
disconnect.setEnabled(false);
menu.add(disconnect);
menu.addSeparator();
exit = new JMenuItem("Exit");
exit.addActionListener(this);
menu.add(exit);
return (menubar);
}
private JPanel createMainPanel() {
JPanel p = new JPanel();
p.setLayout(new BorderLayout());
clsTable = new JTable(new ClusterTableModel()) {
public TableCellRenderer getCellRenderer(int row, int col) {
DefaultTableCellRenderer rowRenderer;
if (col != 2) {
return (super.getCellRenderer(row, col));
}
int state = getBrokerState(row);
switch (state) {
case BrokerState.TAKEOVER_COMPLETE:
rowRenderer = new DefaultTableCellRenderer();
rowRenderer.setBackground(Color.yellow);
return (rowRenderer);
case BrokerState.BROKER_DOWN:
case BrokerState.TAKEOVER_STARTED:
case BrokerState.SHUTDOWN_STARTED:
rowRenderer = new DefaultTableCellRenderer();
rowRenderer.setBackground(Color.red);
return (rowRenderer);
/*
* default case handles: BrokerState.OPERATING:
* BrokerState.QUIESCE_STARTED:
* BrokerState.QUIESCE_COMPLETE:
*/
default:
return (super.getCellRenderer(row, col));
}
}
public int getBrokerState(int row) {
ClusterTableModel m = (ClusterTableModel) clsTable.getModel();
return (m.getBrokerState(row));
}
};
JScrollPane tablePane = new JScrollPane(clsTable);
tablePane.setPreferredSize(new Dimension(640, 100));
p.add(BorderLayout.CENTER, tablePane);
return (p);
}
private JComponent createToolBar() {
JPanel p = new JPanel();
JLabel l;
p.setLayout(new FlowLayout(FlowLayout.LEFT));
l = new JLabel("Cluster state as reported by broker at address: ");
p.add(l);
brokerAddress = new JLabel("<none>");
p.add(brokerAddress);
return (p);
}
private JPanel createStatusArea() {
JPanel p = new JPanel();
p.setLayout(new BorderLayout());
statusTextArea = new JTextArea(5, 60);
statusTextArea.setLineWrap(true);
statusTextArea.setEditable(false);
JScrollPane statusTextPane = new JScrollPane(statusTextArea);
p.add(statusTextPane, BorderLayout.CENTER);
return (p);
}
public void actionPerformed(ActionEvent e) {
Object src = e.getSource();
if (src instanceof JMenuItem) {
JMenuItem mi = (JMenuItem) src;
if (src == exit) {
System.exit(0);
} else if (src == connect) {
showConnectDialog();
} else if (src == disconnect) {
doDisconnect();
}
} else if (src instanceof JButton) {
address = connectDialog.getAddress();
adminUser = connectDialog.getUserName();
adminPasswd = connectDialog.getPassword();
doConnect();
}
}
private void showConnectDialog() {
if (connectDialog == null) {
connectDialog = new MQConnectDialog(f, "Connect to Broker", this);
connectDialog.setAddress((address == null) ? getDefaultAddress() : address);
connectDialog.setUserName((adminUser == null) ? getDefaultUserName() : adminUser);
connectDialog.setPassword((adminPasswd == null) ? getDefaultPassword() : adminPasswd);
}
connectDialog.setLocationRelativeTo(f);
connectDialog.setVisible(true);
}
private static void doExit() {
System.exit(0);
}
private String getDefaultUserName() {
AdminConnectionFactory acf = new AdminConnectionFactory();
String addr;
try {
addr = acf.getProperty(AdminConnectionConfiguration.imqDefaultAdminUsername);
} catch (Exception e) {
addr = null;
}
return (addr);
}
private String getDefaultPassword() {
AdminConnectionFactory acf = new AdminConnectionFactory();
String addr;
try {
addr = acf.getProperty(AdminConnectionConfiguration.imqDefaultAdminPassword);
} catch (Exception e) {
addr = null;
}
return (addr);
}
private String getDefaultAddress() {
/*
* AdminConnectionFactory acf = new AdminConnectionFactory(); String
* addr;
*
* try { addr =
* acf.getProperty(AdminConnectionConfiguration.imqAddress); }
* catch(Exception e) { addr = null; }
*
* return (addr);
*/
return ("localhost:7676");
}
public static void main(String[] args) {
JFrame frame;
MQClusterMonitor s;
String address = null, adminUser = null, adminPasswd = null, secondStr = null;
long seconds = 2;
for (int i = 0; i < args.length; ++i) {
if (args[i].equals("-b")) {
if (++i >= args.length) {
usage();
}
address = args[i];
} else if (args[i].equals("-u")) {
if (++i >= args.length) {
usage();
}
adminUser = args[i];
} else if (args[i].equals("-p")) {
if (++i >= args.length) {
usage();
}
adminPasswd = args[i];
} else if (args[i].equals("-int")) {
if (++i >= args.length) {
usage();
}
secondStr = args[i];
try {
seconds = Long.valueOf(secondStr).longValue();
} catch (NumberFormatException nfe) {
usage("Failed to parse interval value: " + secondStr);
}
} else {
usage();
}
}
frame = new JFrame("MQ Cluster Monitor");
s = new MQClusterMonitor(frame, address, adminUser, adminPasswd, seconds);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
doExit();
}
});
frame.pack();
frame.setVisible(true);
}
public static void usage() {
usage(null);
}
public static void usage(String msg) {
if (msg != null) {
System.err.println(msg);
}
System.err.println("java MQClusterMonitor" + "[-b <host:port>] [-u <admin user name>] [-p <admin password>]");
doExit();
}
}
class ClusterTableModel extends AbstractTableModel {
private String[] columnNames = { "Broker ID", "Broker Address", "Broker State", "# Msgs in Store",
"Takeover Broker ID", "Time since last status timestamp" };
CompositeData clusterInfo[];
public ClusterTableModel() {
}
public void load(CompositeData cd[]) {
if (cd != null) {
clusterInfo = cd;
} else {
clusterInfo = null;
}
fireTableDataChanged();
}
public int getRowCount() {
if (clusterInfo == null) {
return (0);
}
return (clusterInfo.length);
}
public int getColumnCount() {
return (columnNames.length);
}
public String getColumnName(int column) {
return columnNames[column];
}
public Object getValueAt(int row, int column) {
if ((clusterInfo == null) || (clusterInfo.length == 0)) {
return ("");
}
CompositeData info = clusterInfo[row];
switch (column) {
case 0:
// only set for HA clusters, otherwise null
return (info.get(BrokerClusterInfo.ID));
case 1:
return (info.get(BrokerClusterInfo.ADDRESS));
case 2:
return (BrokerState.toString(((Integer) info.get(BrokerClusterInfo.STATE)).intValue()));
case 3:
Object numMsgsObj = info.get(BrokerClusterInfo.NUM_MSGS);
// only set for HA clusters, otherwise null
if (numMsgsObj != null) {
return numMsgsObj.toString();
} else {
return "";
}
// return ((info.get(BrokerClusterInfo.NUM_MSGS)).toString());
case 4:
// only set for HA clusters, otherwise null
return (info.get(BrokerClusterInfo.TAKEOVER_BROKER_ID));
case 5:
// only set for HA clusters, otherwise null
Long statusTimestampObj = (Long) info.get(BrokerClusterInfo.STATUS_TIMESTAMP);
if (statusTimestampObj != null) {
long tmpLong = ((Long) info.get(BrokerClusterInfo.STATUS_TIMESTAMP)).longValue();
long idle = System.currentTimeMillis() - tmpLong;
return (getTimeString(idle));
} else {
return "";
}
}
return ("");
}
public int getBrokerState(int row) {
if ((clusterInfo == null) || (clusterInfo.length == 0)) {
return (BrokerState.BROKER_DOWN);
}
CompositeData info = clusterInfo[row];
if (info == null) {
return (BrokerState.BROKER_DOWN);
}
int state = ((Integer) info.get(BrokerClusterInfo.STATE)).intValue();
return (state);
}
private String getTimeString(long millis) {
String ret = null;
if (millis < 1000) {
ret = millis + " milliseconds";
} else if (millis < (60 * 1000)) {
long seconds = millis / 1000;
ret = seconds + " seconds";
} else if (millis < (60 * 60 * 1000)) {
long mins = millis / (60 * 1000);
ret = mins + " minutes";
} else {
ret = "> 1 hour";
}
return (ret);
}
}