/*
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.tools.visualvm.modules.tracer.dynamic.impl;
import com.sun.tools.visualvm.application.Application;
import com.sun.tools.visualvm.modules.tracer.TracerPackage;
import com.sun.tools.visualvm.modules.tracer.TracerPackageProvider;
import com.sun.tools.visualvm.modules.tracer.TracerSupport;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Logger;
import javax.script.Bindings;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import javax.swing.ImageIcon;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileUtil;
import org.openide.modules.ModuleInstall;
import org.openide.util.ImageUtilities;
/**
*
* @author Jaroslav Bachorik
*/
class DynamicPackageProvider extends ModuleInstall {
final private static Logger LOGGER = Logger.getLogger(DynamicPackageProvider.class.getName());
final private static ImageIcon defaultIcon = ImageUtilities.loadImageIcon("com/sun/tools/visualvm/modules/tracer/dynamic/resources/default.png", true); // NOI18N
private Impl provider;
private ScriptEngine jsEngine;
private boolean enabled = false;
@Override
public synchronized void restored() {
if (provider == null) provider = new Impl();
TracerSupport.getInstance().registerPackageProvider(provider);
jsEngine = new ScriptEngineManager().getEngineByExtension("js");
if (jsEngine != null) {
enabled = true;
}
}
@Override
public synchronized void uninstalled() {
if (provider == null) return;
TracerSupport.getInstance().unregisterPackageProvider(provider);
provider = null;
}
private class Impl extends TracerPackageProvider<Application> {
Impl() { super(Application.class); }
@Override
public TracerPackage<Application>[] getPackages(Application application) {
if (!enabled) return new TracerPackage[0];
Set<TracerPackage<Application>> packages = new HashSet<TracerPackage<Application>>();
Bindings bindings = jsEngine.createBindings();
bindings.put("application", application);
try {
FileObject probesRoot = FileUtil.getConfigFile("VisualVM/Tracer/packages"); // NOI18N
if (probesRoot != null) {
jsEngine.eval(readResource("com/sun/tools/visualvm/modules/tracer/dynamic/resources/configurator.js").toString(), bindings);
Enumeration<? extends FileObject> data = probesRoot.getData(false);
while (data.hasMoreElements()) {
FileObject cfg = data.nextElement();
jsEngine.eval(cfg.asText(), bindings);
}
packages.addAll((Collection<TracerPackage<Application>>)bindings.get("configuredPackages"));
}
} catch (IOException e) {
} catch (ScriptException e) {
e.printStackTrace();
}
return packages.toArray(new TracerPackage[packages.size()]);
}
private CharSequence readResource(String resName) {
StringBuilder sb = new StringBuilder();
InputStream is = getClass().getClassLoader().getResourceAsStream(resName);
if (is != null) {
BufferedReader br = new BufferedReader(new InputStreamReader(is));
try {
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line).append('\n');
}
} catch (IOException e) {
} finally {
try {
br.close();
} catch (IOException e) {
}
}
}
return sb;
}
// private static boolean isAvailable(ApplicationValidator validator, Application application) {
// if (validator == null) return true;
//
// if (!application.isLocalApplication() ||
// application.getState() != Stateful.STATE_AVAILABLE)
// return false;
//
// return validator.isPackageApplicable(application);
// }
}
}