org.graalvm.visualvm.modules.jconsole.JConsolePluginWrapper Maven / Gradle / Ivy
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package org.graalvm.visualvm.modules.jconsole;
import com.sun.tools.jconsole.JConsoleContext;
import static com.sun.tools.jconsole.JConsoleContext.*;
import com.sun.tools.jconsole.JConsoleContext.ConnectionState;
import com.sun.tools.jconsole.JConsolePlugin;
import org.graalvm.visualvm.application.Application;
import org.graalvm.visualvm.core.ui.components.Spacer;
import org.graalvm.visualvm.modules.jconsole.options.JConsoleSettings;
import org.graalvm.visualvm.tools.jmx.JmxModel;
import org.graalvm.visualvm.tools.jmx.JmxModelFactory;
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.ServiceConfigurationError;
import java.util.ServiceLoader;
import java.util.Set;
import java.util.logging.Logger;
import javax.management.MBeanServerConnection;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.SwingWorker;
import javax.swing.Timer;
import javax.swing.event.SwingPropertyChangeSupport;
import org.netbeans.api.options.OptionsDisplayer;
import org.openide.awt.Mnemonics;
import org.openide.util.NbBundle;
import org.openide.util.RequestProcessor;
class JConsolePluginWrapper {
private static final Logger LOGGER = Logger.getLogger(JConsolePluginWrapper.class.getName());
private ServiceLoader pluginService;
private JComponent jconsoleView;
private VMPanel vmPanel;
JConsolePluginWrapper(Application application) {
JmxModel jmxModel = JmxModelFactory.getJmxModelFor(application);
if (jmxModel == null || jmxModel.getConnectionState() != JmxModel.ConnectionState.CONNECTED) {
JTextArea textArea = new JTextArea();
textArea.setBorder(BorderFactory.createEmptyBorder(25, 9, 9, 9));
textArea.setEditable(false);
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
textArea.setText(NbBundle.getMessage(JConsolePluginWrapper.class, "JMX_Not_Available")); // NOI18N
jconsoleView = textArea;
} else {
boolean availablePlugins = getPlugins().iterator().hasNext();
if (availablePlugins) {
vmPanel = new VMPanel(application, this, new ProxyClient(jmxModel));
vmPanel.connect();
JPanel panel = new JPanel(new BorderLayout());
panel.setOpaque(false);
panel.add(new JLabel(" "), BorderLayout.NORTH); // NOI18N
panel.add(vmPanel, BorderLayout.CENTER);
jconsoleView = panel;
} else {
GridBagConstraints c;
JPanel hintPanel = new JPanel(new GridBagLayout());
hintPanel.setOpaque(false);
hintPanel.setBorder(BorderFactory.createEmptyBorder(25, 9, 9, 9));
JLabel hintLabel = new JLabel(NbBundle.getMessage(
JConsolePluginWrapper.class, "NoPluginInstalled")); // NOI18N
hintLabel.setFont(hintLabel.getFont().deriveFont(Font.BOLD));
c = new GridBagConstraints();
c.gridy = 0;
c.anchor = GridBagConstraints.WEST;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(0, 0, 0, 0);
hintPanel.add(hintLabel, c);
JTextArea hintArea = new JTextArea();
hintArea.setEnabled(false);
hintArea.setEditable(false);
hintArea.setLineWrap(true);
hintArea.setWrapStyleWord(true);
hintArea.setDisabledTextColor(hintArea.getForeground());
hintArea.setOpaque(false);
hintArea.setText(NbBundle.getMessage(
JConsolePluginWrapper.class, "InstallPluginHint")); // NOI18N
c = new GridBagConstraints();
c.gridy = 1;
c.weightx = 1;
c.anchor = GridBagConstraints.WEST;
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = new Insets(5, 0, 0, 0);
hintPanel.add(hintArea, c);
JButton optionsButton = new JButton() {
protected void fireActionPerformed(ActionEvent event) {
OptionsDisplayer.getDefault().open("JConsoleOptions"); // NOI18N
}
};
Mnemonics.setLocalizedText(optionsButton, NbBundle.getMessage(
JConsolePluginWrapper.class, "ConfigurePlugins")); // NOI18N
c = new GridBagConstraints();
c.gridy = 2;
c.anchor = GridBagConstraints.EAST;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(10, 0, 0, 0);
hintPanel.add(optionsButton, c);
c = new GridBagConstraints();
c.gridy = 3;
c.weighty = 1;
c.anchor = GridBagConstraints.NORTHWEST;
c.fill = GridBagConstraints.BOTH;
c.gridwidth = GridBagConstraints.REMAINDER;
hintPanel.add(Spacer.create(), c);
jconsoleView = hintPanel;
}
}
}
JComponent getView() {
return jconsoleView;
}
void releasePlugins() {
if (vmPanel != null) {
vmPanel.disconnect();
}
}
// Return a list of newly instantiated JConsolePlugin objects
synchronized List getPlugins() {
if (pluginService == null) {
String pluginPath = JConsoleSettings.getDefault().getPluginsPath();
// First time loading and initializing the plugins
initPluginService(pluginPath == null ? "" : pluginPath); // NOI18N
} else {
// Reload the plugin so that new instances will be created
pluginService.reload();
}
List plugins = new ArrayList();
for (JConsolePlugin p : pluginService) {
plugins.add(p);
}
return plugins;
}
private void initPluginService(String pluginPath) {
if (pluginPath.length() > 0) {
try {
ClassLoader pluginCL = new URLClassLoader(
pathToURLs(pluginPath),
JConsolePluginWrapper.class.getClassLoader());
ServiceLoader plugins =
ServiceLoader.load(JConsolePlugin.class, pluginCL);
// Validate all plugins
for (JConsolePlugin p : plugins) {
LOGGER.finer("JConsole plugin " + p.getClass().getName() + " loaded."); // NOI18N
}
pluginService = plugins;
} catch (ServiceConfigurationError e) {
// Error occurs during initialization of plugin
LOGGER.warning("Fail to load JConsole plugin: " + e.getMessage()); // NOI18N
LOGGER.throwing(JConsolePluginWrapper.class.getName(), "initPluginService", e); // NOI18N
} catch (MalformedURLException e) {
LOGGER.warning("Invalid JConsole plugin path: " + e.getMessage()); // NOI18N
LOGGER.throwing(JConsolePluginWrapper.class.getName(), "initPluginService", e); // NOI18N
}
}
if (pluginService == null) {
initEmptyPlugin();
}
}
private void initEmptyPlugin() {
ClassLoader pluginCL = new URLClassLoader(new URL[0], JConsolePluginWrapper.class.getClassLoader());
pluginService = ServiceLoader.load(JConsolePlugin.class, pluginCL);
}
/**
* Utility method for converting a search path string to an array
* of directory and JAR file URLs.
*
* @param path the search path string
* @return the resulting array of directory and JAR file URLs
*/
private static URL[] pathToURLs(String path) throws MalformedURLException {
String[] names = path.split(File.pathSeparator);
URL[] urls = new URL[names.length + 1];
urls[0] = JConsolePluginWrapper.class.getProtectionDomain().getCodeSource().getLocation();
int count = 1;
for (String f : names) {
URL url = fileToURL(new File(f));
urls[count++] = url;
}
return urls;
}
/**
* Returns the directory or JAR file URL corresponding to the specified
* local file name.
*
* @param file the File object
* @return the resulting directory or JAR file URL, or null if unknown
*/
private static URL fileToURL(File file) throws MalformedURLException {
String name;
try {
name = file.getCanonicalPath();
} catch (IOException e) {
name = file.getAbsolutePath();
}
name = name.replace(File.separatorChar, '/');
if (!name.startsWith("/")) { // NOI18N
name = "/" + name; // NOI18N
}
// If the file does not exist, then assume that it's a directory
if (!file.isFile()) {
name = name + "/"; // NOI18N
}
return new URL("file", "", name); // NOI18N
}
class ProxyClient implements JConsoleContext, PropertyChangeListener {
private ConnectionState connectionState = ConnectionState.DISCONNECTED;
// The SwingPropertyChangeSupport will fire events on the EDT
private SwingPropertyChangeSupport propertyChangeSupport =
new SwingPropertyChangeSupport(this, true);
private volatile boolean isDead = true;
private JmxModel jmxModel = null;
private MBeanServerConnection server = null;
ProxyClient(JmxModel jmxModel) {
this.jmxModel = jmxModel;
}
private void setConnectionState(ConnectionState state) {
ConnectionState oldState = this.connectionState;
this.connectionState = state;
propertyChangeSupport.firePropertyChange(CONNECTION_STATE_PROPERTY,
oldState, state);
}
public ConnectionState getConnectionState() {
return this.connectionState;
}
void connect() {
setConnectionState(ConnectionState.CONNECTING);
try {
tryConnect();
setConnectionState(ConnectionState.CONNECTED);
} catch (Exception e) {
e.printStackTrace();
setConnectionState(ConnectionState.DISCONNECTED);
}
}
private void tryConnect() throws IOException {
jmxModel.addPropertyChangeListener(this);
this.server = jmxModel.getMBeanServerConnection();
this.isDead = false;
}
public MBeanServerConnection getMBeanServerConnection() {
return server;
}
synchronized void disconnect() {
jmxModel.removePropertyChangeListener(this);
// Set connection state to DISCONNECTED
if (!isDead) {
isDead = true;
setConnectionState(ConnectionState.DISCONNECTED);
}
}
boolean isDead() {
return isDead;
}
boolean isConnected() {
return !isDead();
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.removePropertyChangeListener(listener);
}
public void propertyChange(PropertyChangeEvent evt) {
String prop = evt.getPropertyName();
if (CONNECTION_STATE_PROPERTY.equals(prop)) {
org.graalvm.visualvm.tools.jmx.JmxModel.ConnectionState newState = (org.graalvm.visualvm.tools.jmx.JmxModel.ConnectionState) evt.getNewValue();
setConnectionState(ConnectionState.valueOf(newState.name()));
}
}
}
class VMPanel extends JTabbedPane implements PropertyChangeListener {
private Application application;
private ProxyClient proxyClient;
private Timer timer;
private int updateInterval = JConsoleSettings.getDefault().getPolling() * 1000;
private boolean wasConnected = false;
// Each VMPanel has its own instance of the JConsolePlugin.
// A map of JConsolePlugin to the previous SwingWorker.
private Map> plugins = null;
private boolean pluginTabsAdded = false;
VMPanel(Application application, JConsolePluginWrapper wrapper, ProxyClient proxyClient) {
this.application = application;
this.proxyClient = proxyClient;
plugins = new LinkedHashMap>();
for (JConsolePlugin p : wrapper.getPlugins()) {
p.setContext(proxyClient);
plugins.put(p, null);
}
// Start listening to connection state events
//
proxyClient.addPropertyChangeListener(this);
}
boolean isConnected() {
return proxyClient.isConnected();
}
// Call on EDT
void connect() {
if (isConnected()) {
// Create plugin tabs if not done
createPluginTabs();
// Start/Restart update timer on connect/reconnect
startUpdateTimer();
} else {
proxyClient.connect();
}
}
// Call on EDT
void disconnect() {
// Disconnect
proxyClient.disconnect();
// Dispose JConsole plugins
disposePlugins(plugins.keySet());
// Cancel pending update tasks
//
if (timer != null) {
timer.stop();
}
// Stop listening to connection state events
//
proxyClient.removePropertyChangeListener(this);
}
// Called on EDT
public void propertyChange(PropertyChangeEvent ev) {
String prop = ev.getPropertyName();
if (CONNECTION_STATE_PROPERTY.equals(prop)) {
ConnectionState newState = (ConnectionState) ev.getNewValue();
switch (newState) {
case CONNECTED:
// Create tabs if not done
createPluginTabs();
repaint();
// Start/Restart update timer on connect/reconnect
startUpdateTimer();
break;
case DISCONNECTED:
disconnect();
break;
}
}
}
private void startUpdateTimer() {
if (timer != null) {
timer.stop();
}
timer = new Timer(updateInterval, new ActionListener() {
public void actionPerformed(ActionEvent e) {
RequestProcessor.getDefault().post(new Runnable() {
public void run() {
update();
}
});
}
});
timer.setCoalesce(true);
timer.setInitialDelay(0);
timer.start();
}
// Note: This method is called on a TimerTask thread. Any GUI manipulation
// must be performed with invokeLater() or invokeAndWait().
private Object lockObject = new Object();
private void update() {
synchronized (lockObject) {
if (!isConnected()) {
if (wasConnected) {
disconnect();
}
wasConnected = false;
return;
} else {
wasConnected = true;
}
// Plugin GUI update
for (JConsolePlugin p : plugins.keySet()) {
SwingWorker sw = p.newSwingWorker();
SwingWorker prevSW = plugins.get(p);
// Schedule SwingWorker to run only if the previous
// SwingWorker has finished its task and it hasn't started.
if (prevSW == null || prevSW.isDone()) {
if (sw == null || sw.getState() == SwingWorker.StateValue.PENDING) {
plugins.put(p, sw);
if (sw != null) {
RequestProcessor.getDefault().post(sw);
}
}
}
}
}
}
private void createPluginTabs() {
// Add plugin tabs if not done
if (!pluginTabsAdded) {
Set failedPlugins = new HashSet();
for (JConsolePlugin p : plugins.keySet()) {
try {
Map tabs = p.getTabs();
for (Map.Entry e : tabs.entrySet()) {
addTab(e.getKey(), e.getValue());
}
} catch (Throwable t) {
// Error occurs during plugin tab creation.
failedPlugins.add(p);
LOGGER.warning("JConsole plugin " + p.getClass().getName() + " removed: Failed to create JConsole plugin tabs."); // NOI18N
LOGGER.throwing(VMPanel.class.getName(), "createPluginTabs", t); // NOI18N
}
}
// Remove plugins that failed to return the plugin tabs
for (JConsolePlugin p : failedPlugins) {
plugins.remove(p);
}
disposePlugins(failedPlugins);
pluginTabsAdded = true;
}
}
private void disposePlugins(Set pluginSet) {
for (JConsolePlugin p : pluginSet) {
try {
p.dispose();
} catch (Throwable t) {
// Best effort, ignore if plugin fails to cleanup itself.
}
}
}
}
}
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