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/*
* Copyright 2013-2014 Richard M. Hightower
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* __________ _____ __ .__
* \______ \ ____ ____ ____ /\ / \ _____ | | _|__| ____ ____
* | | _// _ \ / _ \ / \ \/ / \ / \\__ \ | |/ / |/ \ / ___\
* | | ( <_> | <_> ) | \ /\ / Y \/ __ \| <| | | \/ /_/ >
* |______ /\____/ \____/|___| / \/ \____|__ (____ /__|_ \__|___| /\___ /
* \/ \/ \/ \/ \/ \//_____/
* ____. ___________ _____ ______________.___.
* | |____ ___ _______ \_ _____/ / _ \ / _____/\__ | |
* | \__ \\ \/ /\__ \ | __)_ / /_\ \ \_____ \ / | |
* /\__| |/ __ \\ / / __ \_ | \/ | \/ \ \____ |
* \________(____ /\_/ (____ / /_______ /\____|__ /_______ / / ______|
* \/ \/ \/ \/ \/ \/
*/
package org.boon.logging;
import org.boon.core.Sys;
import java.lang.ref.WeakReference;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* @author Rick Hightower
*/
public class Logging {
private final static Context _context;
private static WeakReference weakContext = new WeakReference<>( null );
private static class Context {
private static volatile LoggerFactory factory;
private static final ConcurrentMap loggers = new ConcurrentHashMap<>();
private static final ConcurrentMap configurableLoggers
= new ConcurrentHashMap<>();
}
static {
boolean noStatics = Boolean.getBoolean( "org.boon.noStatics" );
if ( noStatics || Sys.inContainer() ) {
_context = null;
weakContext = new WeakReference<>( new Context() );
} else {
_context = new Context();
}
}
/* Manages weak references. */
private static Context context() {
if ( _context != null ) {
return _context;
} else {
Context context = weakContext.get();
if ( context == null ) {
context = new Context();
weakContext = new WeakReference<>( context );
}
return context;
}
}
public static final String LOGGER_FACTORY_CLASS_NAME = "org.boon.logger-logger-factory-class-name";
static {
init();
}
public static synchronized void init() {
LoggerFactory factory;
String className = JDKLoggerFactory.class.getName();
try {
className = System.getProperty(LOGGER_FACTORY_CLASS_NAME);
} catch (Exception e) {
}
if (className != null) {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
try {
Class clz = loader.loadClass(className);
factory = (LoggerFactory) clz.newInstance();
} catch (Exception e) {
throw new IllegalArgumentException("Error instantiating transformer class \"" +
className + "\"", e);
}
} else {
factory = new JDKLoggerFactory();
}
context().factory = factory;
}
public static ConfigurableLogger configurableLogger(final Class clazz) {
return configurableLogger(clazz.getName());
}
public static ConfigurableLogger configurableLogger(final String name) {
ConfigurableLogger loggerDelegate = context().configurableLoggers.get(name);
if (loggerDelegate == null) {
loggerDelegate = new ConfigurableLogger(logger(name));
ConfigurableLogger oldLoggerDelegate = context().configurableLoggers.putIfAbsent(name, loggerDelegate);
if (oldLoggerDelegate != null) {
loggerDelegate = oldLoggerDelegate;
}
}
return loggerDelegate;
}
public static LoggerDelegate logger(final Class clazz) {
return logger(clazz.getName());
}
public static LoggerDelegate logger(final String name) {
LoggerDelegate loggerDelegate = context().loggers.get(name);
if (loggerDelegate == null) {
loggerDelegate = context().factory.logger(name);
LoggerDelegate oldLoggerDelegate = context().loggers.putIfAbsent(name, loggerDelegate);
if (oldLoggerDelegate != null) {
loggerDelegate = oldLoggerDelegate;
}
}
return loggerDelegate;
}
public static void setLevel(String name, LogLevel level) {
logger(name).level(level);
}
public static void turnOnInMemoryConfigLoggerAll(String name) {
ConfigurableLogger configurableLogger = configurableLogger(name);
configurableLogger.tee(new InMemoryThreadLocalLogger(LogLevel.ALL));
}
public static void turnOffInMemoryConfigLoggerAll(String name) {
ConfigurableLogger configurableLogger = configurableLogger(name);
configurableLogger.unwrap();
}
public static void removeLogger(String name) {
context().loggers.remove(name);
context().configurableLoggers.remove(name);
}
public static void removeLogger(final Class clazz) {
context().loggers.remove(clazz.getName());
context().configurableLoggers.remove(clazz.getName());
}
public static Object contextToHold() {
return context();
}
}