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/**
* Copyright (c) 2004-2011 QOS.ch
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
package org.slf4j.helpers;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Queue;
import org.slf4j.Logger;
import org.slf4j.Marker;
import org.slf4j.event.EventRecodingLogger;
import org.slf4j.event.LoggingEvent;
import org.slf4j.event.SubstituteLoggingEvent;
/**
* A logger implementation which logs via a delegate logger. By default, the delegate is a
* {@link NOPLogger}. However, a different delegate can be set at any time.
*
* See also the relevant
* error code documentation.
*
* @author Chetan Mehrotra
* @author Ceki Gulcu
*/
public class SubstituteLogger implements Logger {
private final String name;
private volatile Logger _delegate;
private Boolean delegateEventAware;
private Method logMethodCache;
private EventRecodingLogger eventRecodingLogger;
private Queue eventQueue;
private final boolean createdPostInitialization;
public SubstituteLogger(String name, Queue eventQueue, boolean createdPostInitialization) {
this.name = name;
this.eventQueue = eventQueue;
this.createdPostInitialization = createdPostInitialization;
}
public String getName() {
return name;
}
public boolean isTraceEnabled() {
return delegate().isTraceEnabled();
}
public void trace(String msg) {
delegate().trace(msg);
}
public void trace(String format, Object arg) {
delegate().trace(format, arg);
}
public void trace(String format, Object arg1, Object arg2) {
delegate().trace(format, arg1, arg2);
}
public void trace(String format, Object... arguments) {
delegate().trace(format, arguments);
}
public void trace(String msg, Throwable t) {
delegate().trace(msg, t);
}
public boolean isTraceEnabled(Marker marker) {
return delegate().isTraceEnabled(marker);
}
public void trace(Marker marker, String msg) {
delegate().trace(marker, msg);
}
public void trace(Marker marker, String format, Object arg) {
delegate().trace(marker, format, arg);
}
public void trace(Marker marker, String format, Object arg1, Object arg2) {
delegate().trace(marker, format, arg1, arg2);
}
public void trace(Marker marker, String format, Object... arguments) {
delegate().trace(marker, format, arguments);
}
public void trace(Marker marker, String msg, Throwable t) {
delegate().trace(marker, msg, t);
}
public boolean isDebugEnabled() {
return delegate().isDebugEnabled();
}
public void debug(String msg) {
delegate().debug(msg);
}
public void debug(String format, Object arg) {
delegate().debug(format, arg);
}
public void debug(String format, Object arg1, Object arg2) {
delegate().debug(format, arg1, arg2);
}
public void debug(String format, Object... arguments) {
delegate().debug(format, arguments);
}
public void debug(String msg, Throwable t) {
delegate().debug(msg, t);
}
public boolean isDebugEnabled(Marker marker) {
return delegate().isDebugEnabled(marker);
}
public void debug(Marker marker, String msg) {
delegate().debug(marker, msg);
}
public void debug(Marker marker, String format, Object arg) {
delegate().debug(marker, format, arg);
}
public void debug(Marker marker, String format, Object arg1, Object arg2) {
delegate().debug(marker, format, arg1, arg2);
}
public void debug(Marker marker, String format, Object... arguments) {
delegate().debug(marker, format, arguments);
}
public void debug(Marker marker, String msg, Throwable t) {
delegate().debug(marker, msg, t);
}
public boolean isInfoEnabled() {
return delegate().isInfoEnabled();
}
public void info(String msg) {
delegate().info(msg);
}
public void info(String format, Object arg) {
delegate().info(format, arg);
}
public void info(String format, Object arg1, Object arg2) {
delegate().info(format, arg1, arg2);
}
public void info(String format, Object... arguments) {
delegate().info(format, arguments);
}
public void info(String msg, Throwable t) {
delegate().info(msg, t);
}
public boolean isInfoEnabled(Marker marker) {
return delegate().isInfoEnabled(marker);
}
public void info(Marker marker, String msg) {
delegate().info(marker, msg);
}
public void info(Marker marker, String format, Object arg) {
delegate().info(marker, format, arg);
}
public void info(Marker marker, String format, Object arg1, Object arg2) {
delegate().info(marker, format, arg1, arg2);
}
public void info(Marker marker, String format, Object... arguments) {
delegate().info(marker, format, arguments);
}
public void info(Marker marker, String msg, Throwable t) {
delegate().info(marker, msg, t);
}
public boolean isWarnEnabled() {
return delegate().isWarnEnabled();
}
public void warn(String msg) {
delegate().warn(msg);
}
public void warn(String format, Object arg) {
delegate().warn(format, arg);
}
public void warn(String format, Object arg1, Object arg2) {
delegate().warn(format, arg1, arg2);
}
public void warn(String format, Object... arguments) {
delegate().warn(format, arguments);
}
public void warn(String msg, Throwable t) {
delegate().warn(msg, t);
}
public boolean isWarnEnabled(Marker marker) {
return delegate().isWarnEnabled(marker);
}
public void warn(Marker marker, String msg) {
delegate().warn(marker, msg);
}
public void warn(Marker marker, String format, Object arg) {
delegate().warn(marker, format, arg);
}
public void warn(Marker marker, String format, Object arg1, Object arg2) {
delegate().warn(marker, format, arg1, arg2);
}
public void warn(Marker marker, String format, Object... arguments) {
delegate().warn(marker, format, arguments);
}
public void warn(Marker marker, String msg, Throwable t) {
delegate().warn(marker, msg, t);
}
public boolean isErrorEnabled() {
return delegate().isErrorEnabled();
}
public void error(String msg) {
delegate().error(msg);
}
public void error(String format, Object arg) {
delegate().error(format, arg);
}
public void error(String format, Object arg1, Object arg2) {
delegate().error(format, arg1, arg2);
}
public void error(String format, Object... arguments) {
delegate().error(format, arguments);
}
public void error(String msg, Throwable t) {
delegate().error(msg, t);
}
public boolean isErrorEnabled(Marker marker) {
return delegate().isErrorEnabled(marker);
}
public void error(Marker marker, String msg) {
delegate().error(marker, msg);
}
public void error(Marker marker, String format, Object arg) {
delegate().error(marker, format, arg);
}
public void error(Marker marker, String format, Object arg1, Object arg2) {
delegate().error(marker, format, arg1, arg2);
}
public void error(Marker marker, String format, Object... arguments) {
delegate().error(marker, format, arguments);
}
public void error(Marker marker, String msg, Throwable t) {
delegate().error(marker, msg, t);
}
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
SubstituteLogger that = (SubstituteLogger) o;
if (!name.equals(that.name))
return false;
return true;
}
@Override
public int hashCode() {
return name.hashCode();
}
/**
* Return the delegate logger instance if set. Otherwise, return a {@link NOPLogger}
* instance.
*/
Logger delegate() {
if(_delegate != null) {
return _delegate;
}
if(createdPostInitialization) {
return NOPLogger.NOP_LOGGER;
} else {
return getEventRecordingLogger();
}
}
private Logger getEventRecordingLogger() {
if (eventRecodingLogger == null) {
eventRecodingLogger = new EventRecodingLogger(this, eventQueue);
}
return eventRecodingLogger;
}
/**
* Typically called after the {@link org.slf4j.LoggerFactory} initialization phase is completed.
* @param delegate
*/
public void setDelegate(Logger delegate) {
this._delegate = delegate;
}
public boolean isDelegateEventAware() {
if (delegateEventAware != null)
return delegateEventAware;
try {
logMethodCache = _delegate.getClass().getMethod("log", LoggingEvent.class);
delegateEventAware = Boolean.TRUE;
} catch (NoSuchMethodException e) {
delegateEventAware = Boolean.FALSE;
}
return delegateEventAware;
}
public void log(LoggingEvent event) {
if (isDelegateEventAware()) {
try {
logMethodCache.invoke(_delegate, event);
} catch (IllegalAccessException e) {
} catch (IllegalArgumentException e) {
} catch (InvocationTargetException e) {
}
}
}
public boolean isDelegateNull() {
return _delegate == null;
}
public boolean isDelegateNOP() {
return _delegate instanceof NOPLogger;
}
}
