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Kernel for Resin Java Application Server
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/*
* Copyright (c) 1998-2012 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.loader;
import java.lang.management.ManagementFactory;
import java.security.Permission;
import java.util.ArrayList;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.naming.NamingException;
import com.caucho.config.ConfigException;
import com.caucho.jmx.Jmx;
import com.caucho.lifecycle.StartLifecycleException;
import com.caucho.log.EnvironmentStream;
import com.caucho.log.LogManagerImpl;
import com.caucho.naming.Jndi;
import com.caucho.server.util.CauchoSystem;
import com.caucho.vfs.Depend;
import com.caucho.vfs.Dependency;
import com.caucho.vfs.Path;
import com.caucho.vfs.Vfs;
/**
* Static utility classes.
*/
public class Environment {
private static boolean _isStaticInit;
private static Logger _log;
private static ArrayList _globalEnvironmentListeners
= new ArrayList();
private static ArrayList _globalLoaderListeners
= new ArrayList();
private static boolean _isInitComplete;
private static ClassLoader _systemClassLoader;
/**
* Returns the local environment.
*/
public static EnvironmentClassLoader getEnvironmentClassLoader()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader)
return (EnvironmentClassLoader) loader;
}
loader = getSystemClassLoader();
if (loader instanceof EnvironmentClassLoader)
return (EnvironmentClassLoader) loader;
return null;
}
/**
* Returns the local environment.
*/
public static EnvironmentClassLoader
getEnvironmentClassLoader(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader)
return (EnvironmentClassLoader) loader;
}
return null;
}
/**
* Add listener.
*
* @param listener object to listen for environment start/stop
*/
public static void addEnvironmentListener(EnvironmentListener listener)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
addEnvironmentListener(listener, loader);
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addEnvironmentListener(EnvironmentListener listener,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).addListener(listener);
return;
}
}
/*
if (_envSystemClassLoader != null) {
_envSystemClassLoader.addNotificationListener(listener);
return;
}
*/
_globalEnvironmentListeners.add(listener);
}
/**
* Remove listener.
*
* @param listener object to listen for environment start/stop
*/
public static void removeEnvironmentListener(EnvironmentListener listener)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
removeEnvironmentListener(listener, loader);
}
/**
* Remove listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void removeEnvironmentListener(EnvironmentListener listener,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).removeListener(listener);
return;
}
}
_globalEnvironmentListeners.remove(listener);
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addChildEnvironmentListener(EnvironmentListener listener)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
addChildEnvironmentListener(listener, loader);
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addChildEnvironmentListener(EnvironmentListener listener,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).addChildListener(listener);
return;
}
}
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addChildLoaderListener(AddLoaderListener listener)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
addChildLoaderListener(listener, loader);
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addChildLoaderListener(AddLoaderListener listener,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).addLoaderListener(listener);
return;
}
}
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
*/
public static void addClassLoaderListener(ClassLoaderListener listener)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
addClassLoaderListener(listener, loader);
}
/**
* Add listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addClassLoaderListener(ClassLoaderListener listener,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).addListener(listener);
return;
}
}
/*
if (_envSystemClassLoader != null) {
_envSystemClassLoader.addNotificationListener(listener);
return;
}
*/
_globalLoaderListeners.add(listener);
}
/**
* Add start listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addStartListener(Object obj)
{
addEnvironmentListener(new StartListener(obj));
}
/**
* Add close listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addCloseListener(Object obj)
{
addClassLoaderListener(new CloseListener(obj));
}
/**
* Add close listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addCloseListener(Object obj, ClassLoader loader)
{
addClassLoaderListener(new CloseListener(obj), loader);
}
/**
* Add close listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addWeakCloseListener(Object obj)
{
addClassLoaderListener(new WeakCloseListener(obj));
}
/**
* Add close listener.
*
* @param listener object to listen for environment create/destroy
* @param loader the context class loader
*/
public static void addWeakCloseListener(Object obj, ClassLoader loader)
{
addClassLoaderListener(new WeakCloseListener(obj), loader);
}
/**
* Starts the current environment.
*/
public static void init()
{
initializeEnvironment();
init(Thread.currentThread().getContextClassLoader());
}
/**
* Starts the current environment.
*/
public static void init(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).init();
return;
}
}
for (int i = 0; i < _globalLoaderListeners.size(); i++) {
ClassLoaderListener listener = _globalLoaderListeners.get(i);
listener.classLoaderInit(null);
}
}
/**
* Starts the current environment.
*/
public static void start()
throws StartLifecycleException
{
start(Thread.currentThread().getContextClassLoader());
}
/**
* Starts the current environment.
*/
public static void start(ClassLoader loader)
throws StartLifecycleException
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).start();
return;
}
}
init(loader);
for (int i = 0; i < _globalEnvironmentListeners.size(); i++) {
EnvironmentListener listener = _globalEnvironmentListeners.get(i);
listener.environmentStart(null);
}
}
/**
* Starts the current environment.
*/
public static void stop()
{
stop(Thread.currentThread().getContextClassLoader());
}
/**
* Starts the current environment.
*/
public static void stop(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).stop();
return;
}
}
ArrayList listeners;
listeners = new ArrayList();
listeners.addAll(_globalEnvironmentListeners);
_globalEnvironmentListeners.clear();
for (int i = 0; i < listeners.size(); i++) {
EnvironmentListener listener = listeners.get(i);
listener.environmentStop(null);
}
}
/**
* Adds a dependency to the current environment.
*
* @param depend the dependency to add
*/
public static void addDependency(Dependency depend)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
addDependency(depend, loader);
}
/**
* Adds a dependency to the current environment.
*
* @param depend the dependency to add
* @param loader the context loader
*/
public static void addDependency(Dependency depend,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
((EnvironmentClassLoader) loader).addDependency(depend);
return;
}
}
}
/**
* Returns the topmost dynamic class loader.
*/
public static DynamicClassLoader getDynamicClassLoader()
{
Thread thread = Thread.currentThread();
return getDynamicClassLoader(thread.getContextClassLoader());
}
/**
* Returns the topmost dynamic class loader.
*
* @param loader the context loader
*/
public static DynamicClassLoader getDynamicClassLoader(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof DynamicClassLoader) {
return (DynamicClassLoader) loader;
}
}
return null;
}
/**
* Adds a dependency to the current environment.
*
* @param depend the dependency to add
*/
public static void addDependency(Path path)
{
addDependency(new Depend(path));
}
/**
* Adds a dependency to the current environment.
*
* @param path the dependency to add
* @param loader the context loader
*/
public static void addDependency(Path path, ClassLoader loader)
{
addDependency(new Depend(path), loader);
}
/**
* Gets a local variable for the current environment.
*
* @param name the attribute name
*
* @return the attribute value
*/
public static Object getAttribute(String name)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return getAttribute(name, loader);
}
/**
* Returns the current dependency check interval.
*/
public static long getDependencyCheckInterval()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof DynamicClassLoader)
return ((DynamicClassLoader) loader).getDependencyCheckInterval();
}
return DynamicClassLoader.getGlobalDependencyCheckInterval();
}
/**
* Returns the current dependency check interval.
*/
public static long getDependencyCheckInterval(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof DynamicClassLoader)
return ((DynamicClassLoader) loader).getDependencyCheckInterval();
}
return DynamicClassLoader.getGlobalDependencyCheckInterval();
}
/**
* Gets a local variable for the current environment.
*
* @param name the attribute name
* @param loader the context loader
*
* @return the attribute value
*/
public static Object getAttribute(String name, ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
Object value = ((EnvironmentClassLoader) loader).getAttribute(name);
if (value != null)
return value;
}
}
/*
if (_envSystemClassLoader != null)
return _envSystemClassLoader.getAttribute(name);
*/
return null;
}
/**
* Gets a local variable for the current environment.
*
* @param name the attribute name
*
* @return the attribute value
*/
public static Object getLevelAttribute(String name)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return getLevelAttribute(name, loader);
}
/**
* Gets a local variable for the current environment.
*
* @param name the attribute name
* @param loader the context loader
*
* @return the attribute value
*/
public static Object getLevelAttribute(String name, ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
return ((EnvironmentClassLoader) loader).getAttribute(name);
}
}
/*
if (_envSystemClassLoader != null)
return _envSystemClassLoader.getAttribute(name);
*/
return null;
}
/**
* Sets a local variable for the current environment.
*
* @param name the attribute name
* @param value the new attribute value
*
* @return the old attribute value
*/
public static Object setAttribute(String name, Object value)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return setAttribute(name, value, loader);
}
/**
* Sets a local variable for the current environment.
*
* @param name the attribute name
* @param value the new attribute value
* @param loader the context loader
*
* @return the old attribute value
*/
public static Object setAttribute(String name,
Object value,
ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
EnvironmentClassLoader envLoader = (EnvironmentClassLoader) loader;
Object oldValue = envLoader.getAttribute(name);
envLoader.setAttribute(name, value);
return oldValue;
}
}
/*
if (_envSystemClassLoader != null) {
Object oldValue = _envSystemClassLoader.getAttribute(name);
_envSystemClassLoader.setAttribute(name, value);
return oldValue;
}
*/
return null;
}
/**
* Adds a permission to the current environment.
*
* @param perm the permission to add.
*
* @return the old attribute value
*/
public static void addPermission(Permission perm)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
addPermission(perm, loader);
}
/**
* Adds a permission to the current environment.
*
* @param perm the permission to add.
*
* @return the old attribute value
*/
public static void addPermission(Permission perm, ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
EnvironmentClassLoader envLoader = (EnvironmentClassLoader) loader;
envLoader.addPermission(perm);
}
}
}
/**
* Gets the class loader owner.
*/
public static Object getOwner()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return getOwner(loader);
}
/**
* Gets the class loader owner.
*/
public static Object getOwner(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
EnvironmentClassLoader envLoader = (EnvironmentClassLoader) loader;
Object owner = envLoader.getOwner();
if (owner != null)
return owner;
}
}
return null;
}
/**
* Sets a configuration exception.
*/
public static void setConfigException(Throwable e)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
EnvironmentClassLoader envLoader = (EnvironmentClassLoader) loader;
envLoader.setConfigException(e);
return;
}
}
}
/**
* Returns any configuration exception.
*/
public static Throwable getConfigException()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
EnvironmentClassLoader envLoader = (EnvironmentClassLoader) loader;
if (envLoader.getConfigException() != null)
return envLoader.getConfigException();
}
}
return null;
}
/**
* Returns the environment name.
*/
public static String getEnvironmentName()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return getEnvironmentName(loader);
}
/**
* Returns the environment name.
*/
public static String getEnvironmentName(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
String name = ((EnvironmentClassLoader) loader).getId();
if (name != null)
return name;
else
return "";
}
}
/*
if (_envSystemClassLoader != null) {
String name = _envSystemClassLoader.getId();
if (name != null)
return name;
else
return "";
}
*/
return Thread.currentThread().getContextClassLoader().toString();
}
/**
* Apply the action to visible classloaders
*/
public static void applyVisibleModules(EnvironmentApply apply)
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
EnvironmentClassLoader envLoader = (EnvironmentClassLoader) loader;
envLoader.applyVisibleModules(apply);
return;
}
}
/*
if (_envSystemClassLoader != null) {
_envSystemClassLoader.applyVisibleModules(apply);
}
*/
}
/**
* Returns the classpath for the environment level.
*/
public static String getLocalClassPath()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
return getLocalClassPath(loader);
}
/**
* Returns the classpath for the environment level.
*/
public static String getLocalClassPath(ClassLoader loader)
{
for (; loader != null; loader = loader.getParent()) {
if (loader instanceof EnvironmentClassLoader) {
return ((EnvironmentClassLoader) loader).getLocalClassPath();
}
}
return CauchoSystem.getClassPath();
}
/**
* destroys the current environment.
*/
public static void closeGlobal()
{
ArrayList listeners;
listeners = new ArrayList();
listeners.addAll(_globalLoaderListeners);
_globalLoaderListeners.clear();
for (int i = 0; i < listeners.size(); i++) {
ClassLoaderListener listener = listeners.get(i);
listener.classLoaderDestroy(null);
}
}
/**
* @return
*/
public static boolean isLoggingInitialized()
{
String logManager = System.getProperty("java.util.logging.manager");
return _isInitComplete && LogManagerImpl.class.getName().equals(logManager);
}
/**
* Initializes the environment
*/
public static synchronized void initializeEnvironment()
{
if (_isStaticInit)
return;
_isStaticInit = true;
ClassLoader systemLoader = ClassLoader.getSystemClassLoader();
Thread thread = Thread.currentThread();
ClassLoader oldLoader = thread.getContextClassLoader();
try {
thread.setContextClassLoader(systemLoader);
if ("1.6.".compareTo(System.getProperty("java.runtime.version")) > 0)
throw new ConfigException("Resin requires JDK 1.6 or later");
// #2281
// PolicyImpl.init();
EnvironmentStream.setStdout(System.out);
EnvironmentStream.setStderr(System.err);
try {
Vfs.initJNI();
} catch (Throwable e) {
}
Properties props = System.getProperties();
/*
if (props.get("java.util.logging.manager") == null) {
props.put("java.util.logging.manager",
"com.caucho.log.LogManagerImpl");
}
*/
ClassLoader envClassLoader
= EnvironmentClassLoader.class.getClassLoader();
boolean isGlobalLoadable = false;
try {
Class cl = Class.forName("com.caucho.naming.InitialContextFactoryImpl",
false,
systemLoader);
isGlobalLoadable = (cl != null);
} catch (Exception e) {
log().log(Level.FINER, e.toString(), e);
}
// #3486
String namingPkgs = (String) props.get("java.naming.factory.url.pkgs");
if (namingPkgs == null)
namingPkgs = "com.caucho.naming";
else
namingPkgs = namingPkgs + ":" + "com.caucho.naming";
props.put("java.naming.factory.url.pkgs", namingPkgs);
if (isGlobalLoadable) {
// These properties require Resin to be at the system loader
if (props.get("java.naming.factory.initial") == null) {
props.put("java.naming.factory.initial",
"com.caucho.naming.InitialContextFactoryImpl");
}
defaultProperty(props, "jdk.tls.ephemeralDHKeySize", "2048");
defaultProperty(props, "jdk.tls.rejectClientInitiatedRenegotiation", "true");
defaultProperty(props, "sun.security.ssl.allowUnsafeRenegotiation", "false");
defaultProperty(props, "sun.security.ssl.allowLegacyHelloMessages", "false");
// props.put("java.naming.factory.url.pkgs", "com.caucho.naming");
EnvironmentProperties.enableEnvironmentSystemProperties(true);
String oldBuilder = props.getProperty("javax.management.builder.initial");
if (oldBuilder == null) {
oldBuilder = "com.caucho.jmx.MBeanServerBuilderImpl";
props.put("javax.management.builder.initial", oldBuilder);
}
/*
props.put("javax.management.builder.initial",
"com.caucho.jmx.EnvironmentMBeanServerBuilder");
*/
// server/21ab
/*
if (MBeanServerFactory.findMBeanServer(null).size() == 0)
MBeanServerFactory.createMBeanServer("Resin");
*/
ManagementFactory.getPlatformMBeanServer();
}
Jndi.bindDeep("java:comp/env/jmx/MBeanServer",
Jmx.getGlobalMBeanServer());
Jndi.bindDeep("java:comp/env/jmx/GlobalMBeanServer",
Jmx.getGlobalMBeanServer());
try {
Class cl = Class.forName("com.caucho.server.resin.EnvInit",
false,
systemLoader);
cl.newInstance();
} catch (Exception e) {
log().log(Level.FINE, e.toString(), e);
}
/*
try {
Jndi.rebindDeep("java:comp/ORB",
new com.caucho.iiop.orb.ORBImpl());
} catch (Exception e) {
e.printStackTrace();
}
*/
} catch (NamingException e) {
log().log(Level.FINE, e.toString(), e);
} catch (Throwable e) {
e.printStackTrace();
} finally {
thread.setContextClassLoader(oldLoader);
_isInitComplete = true;
}
}
private static void defaultProperty(Properties props, String key, String value)
{
if (props.get(key) == null) {
props.setProperty(key, value);
}
}
private static final Logger log()
{
if (_log == null)
_log = Logger.getLogger(Environment.class.getName());
return _log;
}
private static ClassLoader getSystemClassLoader()
{
try {
if (_systemClassLoader == null) {
if (_systemClassLoader == null) {
_systemClassLoader = ClassLoader.getSystemClassLoader();
if (_systemClassLoader != null)
_systemClassLoader = RootDynamicClassLoader.getSystemRootClassLoader();
}
}
} catch (Exception e) {
// can't log this early in startup
_systemClassLoader = Environment.class.getClassLoader();
}
return _systemClassLoader;
}
}