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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.jul;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import org.slf4j.Logger;
import org.slf4j.Marker;
import org.slf4j.event.EventConstants;
import org.slf4j.event.LoggingEvent;
import org.slf4j.helpers.AbstractLogger;
import org.slf4j.helpers.FormattingTuple;
import org.slf4j.helpers.LegacyAbstractLogger;
import org.slf4j.helpers.MessageFormatter;
import org.slf4j.helpers.NormalizedParameters;
import org.slf4j.helpers.SubstituteLogger;
import org.slf4j.spi.DefaultLoggingEventBuilder;
import org.slf4j.spi.LocationAwareLogger;
/**
* A wrapper over {@link java.util.logging.Logger java.util.logging.Logger} in
* conformity with the {@link Logger} interface. Note that the logging levels
* mentioned in this class refer to those defined in the java.util.logging
* package.
*
* @author Ceki Gülcü
* @author Peter Royal
*/
public final class JDK14LoggerAdapter extends LegacyAbstractLogger implements LocationAwareLogger {
private static final long serialVersionUID = -8053026990503422791L;
transient final java.util.logging.Logger logger;
// WARN: JDK14LoggerAdapter constructor should have only package access so
// that only JDK14LoggerFactory be able to create one.
JDK14LoggerAdapter(java.util.logging.Logger logger) {
this.logger = logger;
this.name = logger.getName();
}
/**
* Is this logger instance enabled for the FINEST level?
*
* @return True if this Logger is enabled for level FINEST, false otherwise.
*/
public boolean isTraceEnabled() {
return logger.isLoggable(Level.FINEST);
}
/**
* Is this logger instance enabled for the FINE level?
*
* @return True if this Logger is enabled for level FINE, false otherwise.
*/
public boolean isDebugEnabled() {
return logger.isLoggable(Level.FINE);
}
/**
* Is this logger instance enabled for the INFO level?
*
* @return True if this Logger is enabled for the INFO level, false otherwise.
*/
public boolean isInfoEnabled() {
return logger.isLoggable(Level.INFO);
}
/**
* Is this logger instance enabled for the WARNING level?
*
* @return True if this Logger is enabled for the WARNING level, false
* otherwise.
*/
public boolean isWarnEnabled() {
return logger.isLoggable(Level.WARNING);
}
/**
* Is this logger instance enabled for level SEVERE?
*
* @return True if this Logger is enabled for level SEVERE, false otherwise.
*/
public boolean isErrorEnabled() {
return logger.isLoggable(Level.SEVERE);
}
// /**
// * Log the message at the specified level with the specified throwable if any.
// * This method creates a LogRecord and fills in caller date before calling
// * this instance's JDK14 logger.
// *
// * See bug report #13 for more details.
// *
// * @param level
// * @param msg
// * @param t
// */
// private void log(String callerFQCN, Level level, String msg, Throwable t) {
// // millis and thread are filled by the constructor
// LogRecord record = new LogRecord(level, msg);
// record.setLoggerName(getName());
// record.setThrown(t);
// // Note: parameters in record are not set because SLF4J only
// // supports a single formatting style
// fillCallerData(callerFQCN, record);
// logger.log(record);
// }
/**
* Log the message at the specified level with the specified throwable if any.
* This method creates a LogRecord and fills in caller date before calling this
* instance's JDK14 logger.
*/
@Override
protected void handleNormalizedLoggingCall(org.slf4j.event.Level level, Marker marker, String msg, Object[] args, Throwable throwable) {
innerNormalizedLoggingCallHandler(getFullyQualifiedCallerName(), level, marker, msg, args, throwable);
}
private void innerNormalizedLoggingCallHandler(String fqcn, org.slf4j.event.Level level, Marker marker, String msg, Object[] args, Throwable throwable) {
// millis and thread are filled by the constructor
Level julLevel = slf4jLevelToJULLevel(level);
String formattedMessage = MessageFormatter.basicArrayFormat(msg, args);
LogRecord record = new LogRecord(julLevel, formattedMessage);
// https://jira.qos.ch/browse/SLF4J-13
record.setLoggerName(getName());
record.setThrown(throwable);
// Note: parameters in record are not set because SLF4J only
// supports a single formatting style
// See also https://jira.qos.ch/browse/SLF4J-10
fillCallerData(fqcn, record);
logger.log(record);
}
@Override
protected String getFullyQualifiedCallerName() {
return SELF;
}
@Override
public void log(Marker marker, String callerFQCN, int slf4jLevelInt, String message, Object[] arguments, Throwable throwable) {
org.slf4j.event.Level slf4jLevel = org.slf4j.event.Level.intToLevel(slf4jLevelInt);
Level julLevel = slf4jLevelIntToJULLevel(slf4jLevelInt);
if (logger.isLoggable(julLevel)) {
NormalizedParameters np = NormalizedParameters.normalize(message, arguments, throwable);
innerNormalizedLoggingCallHandler(callerFQCN, slf4jLevel, marker, np.getMessage(), np.getArguments(), np.getThrowable());
}
}
/**
* Fill in caller data if possible.
*
* @param record The record to update
*/
final private void fillCallerData(String callerFQCN, LogRecord record) {
StackTraceElement[] steArray = new Throwable().getStackTrace();
int selfIndex = -1;
for (int i = 0; i < steArray.length; i++) {
final String className = steArray[i].getClassName();
if (barrierMatch(callerFQCN, className)) {
selfIndex = i;
break;
}
}
int found = -1;
for (int i = selfIndex + 1; i < steArray.length; i++) {
final String className = steArray[i].getClassName();
if (!(barrierMatch(callerFQCN, className))) {
found = i;
break;
}
}
if (found != -1) {
StackTraceElement ste = steArray[found];
// setting the class name has the side effect of setting
// the needToInferCaller variable to false.
record.setSourceClassName(ste.getClassName());
record.setSourceMethodName(ste.getMethodName());
}
}
static String SELF = JDK14LoggerAdapter.class.getName();
static String SUPER = LegacyAbstractLogger.class.getName();
static String SUPER_OF_SUPER = AbstractLogger.class.getName();
static String SUBSTITUE = SubstituteLogger.class.getName();
static String FLUENT = DefaultLoggingEventBuilder.class.getName();
static String[] BARRIER_CLASSES = new String[] { SUPER_OF_SUPER, SUPER, SELF, SUBSTITUE, FLUENT };
private boolean barrierMatch(String callerFQCN, String candidateClassName) {
if (candidateClassName.equals(callerFQCN))
return true;
for (String barrierClassName : BARRIER_CLASSES) {
if (barrierClassName.equals(candidateClassName)) {
return true;
}
}
return false;
}
private static Level slf4jLevelIntToJULLevel(int levelInt) {
org.slf4j.event.Level slf4jLevel = org.slf4j.event.Level.intToLevel(levelInt);
return slf4jLevelToJULLevel(slf4jLevel);
}
private static Level slf4jLevelToJULLevel(org.slf4j.event.Level slf4jLevel) {
Level julLevel;
switch (slf4jLevel) {
case TRACE:
julLevel = Level.FINEST;
break;
case DEBUG:
julLevel = Level.FINE;
break;
case INFO:
julLevel = Level.INFO;
break;
case WARN:
julLevel = Level.WARNING;
break;
case ERROR:
julLevel = Level.SEVERE;
break;
default:
throw new IllegalStateException("Level " + slf4jLevel + " is not recognized.");
}
return julLevel;
}
/**
* @since 1.7.15
*/
public void log(LoggingEvent event) {
// assumes that the invocation is made from a substitute logger
// this assumption might change in the future with the advent of a fluent API
Level julLevel = slf4jLevelToJULLevel(event.getLevel());
if (logger.isLoggable(julLevel)) {
LogRecord record = eventToRecord(event, julLevel);
logger.log(record);
}
}
private LogRecord eventToRecord(LoggingEvent event, Level julLevel) {
String format = event.getMessage();
Object[] arguments = event.getArgumentArray();
FormattingTuple ft = MessageFormatter.arrayFormat(format, arguments);
if (ft.getThrowable() != null && event.getThrowable() != null) {
throw new IllegalArgumentException("both last element in argument array and last argument are of type Throwable");
}
Throwable t = event.getThrowable();
if (ft.getThrowable() != null) {
t = ft.getThrowable();
throw new IllegalStateException("fix above code");
}
LogRecord record = new LogRecord(julLevel, ft.getMessage());
record.setLoggerName(event.getLoggerName());
record.setMillis(event.getTimeStamp());
record.setSourceClassName(EventConstants.NA_SUBST);
record.setSourceMethodName(EventConstants.NA_SUBST);
record.setThrown(t);
return record;
}
}
