org.slf4j.impl.ConsoleLogger Maven / Gradle / Ivy
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/*
* Copyright (c) Aeontronix 2021
*/
package org.slf4j.impl;
import org.fusesource.jansi.Ansi;
import org.slf4j.Logger;
import org.slf4j.event.LoggingEvent;
import org.slf4j.helpers.FormattingTuple;
import org.slf4j.helpers.MarkerIgnoringBase;
import org.slf4j.helpers.MessageFormatter;
import org.slf4j.spi.LocationAwareLogger;
import java.io.PrintStream;
import java.util.Date;
import static org.fusesource.jansi.Ansi.ansi;
public class ConsoleLogger extends MarkerIgnoringBase {
private static final long serialVersionUID = -632788891211436180L;
private static long START_TIME = System.currentTimeMillis();
protected static final int LOG_LEVEL_TRACE = LocationAwareLogger.TRACE_INT;
protected static final int LOG_LEVEL_DEBUG = LocationAwareLogger.DEBUG_INT;
protected static final int LOG_LEVEL_INFO = LocationAwareLogger.INFO_INT;
protected static final int LOG_LEVEL_WARN = LocationAwareLogger.WARN_INT;
protected static final int LOG_LEVEL_ERROR = LocationAwareLogger.ERROR_INT;
protected static final int LOG_LEVEL_OFF = LOG_LEVEL_ERROR + 10;
public static final String SYSTEM_PREFIX = "org.slf4j.simpleLogger.";
ConsoleLogger(String name) {
this.name = name;
}
/**
* This is our internal implementation for logging regular
* (non-parameterized) log messages.
*
* @param level
* One of the LOG_LEVEL_XXX constants defining the log level
* @param message
* The message itself
* @param t
* The exception whose stack trace should be logged
*/
private void log(int level, String message, Throwable t) {
if( level < LOG_LEVEL_INFO ) {
return;
}
StringBuilder buf = new StringBuilder(32);
Ansi ansi = ansi();
if( level == LOG_LEVEL_DEBUG ) {
ansi = ansi.fg(Ansi.Color.CYAN).a("DEBUG: ");
} else if( level >= LOG_LEVEL_WARN ) {
ansi = ansi.fg(Ansi.Color.RED).a("WARNING: ");
}
write(ansi.a(message).reset(), t);
}
protected String renderLevel(int level) {
switch (level) {
case LOG_LEVEL_TRACE:
return "TRACE";
case LOG_LEVEL_DEBUG:
return ("DEBUG");
case LOG_LEVEL_INFO:
return "INFO";
case LOG_LEVEL_WARN:
return "WARNING";
case LOG_LEVEL_ERROR:
return "ERROR";
}
throw new IllegalStateException("Unrecognized level [" + level + "]");
}
/**
* To avoid intermingling of log messages and associated stack traces, the two
* operations are done in a synchronized block.
*
* @param buf
* @param t
*/
void write(Appendable buf, Throwable t) {
PrintStream targetStream = System.out;
targetStream.println(buf);
writeThrowable(t, targetStream);
targetStream.flush();
}
protected void writeThrowable(Throwable t, PrintStream targetStream) {
if (t != null) {
t.printStackTrace(targetStream);
}
}
private String computeShortName() {
return name.substring(name.lastIndexOf(".") + 1);
}
/**
* For formatted messages, first substitute arguments and then log.
*
* @param level
* @param format
* @param arg1
* @param arg2
*/
private void formatAndLog(int level, String format, Object arg1, Object arg2) {
if (!isLevelEnabled(level)) {
return;
}
FormattingTuple tp = MessageFormatter.format(format, arg1, arg2);
log(level, tp.getMessage(), tp.getThrowable());
}
/**
* For formatted messages, first substitute arguments and then log.
*
* @param level
* @param format
* @param arguments
* a list of 3 ore more arguments
*/
private void formatAndLog(int level, String format, Object... arguments) {
if (!isLevelEnabled(level)) {
return;
}
FormattingTuple tp = MessageFormatter.arrayFormat(format, arguments);
log(level, tp.getMessage(), tp.getThrowable());
}
/** Are {@code trace} messages currently enabled? */
public boolean isTraceEnabled() {
return false;
}
/**
* A simple implementation which logs messages of level TRACE according to
* the format outlined above.
*/
public void trace(String msg) {
log(LOG_LEVEL_TRACE, msg, null);
}
/**
* Perform single parameter substitution before logging the message of level
* TRACE according to the format outlined above.
*/
public void trace(String format, Object param1) {
formatAndLog(LOG_LEVEL_TRACE, format, param1, null);
}
/**
* Perform double parameter substitution before logging the message of level
* TRACE according to the format outlined above.
*/
public void trace(String format, Object param1, Object param2) {
formatAndLog(LOG_LEVEL_TRACE, format, param1, param2);
}
/**
* Perform double parameter substitution before logging the message of level
* TRACE according to the format outlined above.
*/
public void trace(String format, Object... argArray) {
formatAndLog(LOG_LEVEL_TRACE, format, argArray);
}
/** Log a message of level TRACE, including an exception. */
public void trace(String msg, Throwable t) {
log(LOG_LEVEL_TRACE, msg, t);
}
/** Are {@code debug} messages currently enabled? */
public boolean isDebugEnabled() {
return false;
}
/**
* A simple implementation which logs messages of level DEBUG according to
* the format outlined above.
*/
public void debug(String msg) {
log(LOG_LEVEL_DEBUG, msg, null);
}
/**
* Perform single parameter substitution before logging the message of level
* DEBUG according to the format outlined above.
*/
public void debug(String format, Object param1) {
formatAndLog(LOG_LEVEL_DEBUG, format, param1, null);
}
/**
* Perform double parameter substitution before logging the message of level
* DEBUG according to the format outlined above.
*/
public void debug(String format, Object param1, Object param2) {
formatAndLog(LOG_LEVEL_DEBUG, format, param1, param2);
}
/**
* Perform double parameter substitution before logging the message of level
* DEBUG according to the format outlined above.
*/
public void debug(String format, Object... argArray) {
formatAndLog(LOG_LEVEL_DEBUG, format, argArray);
}
/** Log a message of level DEBUG, including an exception. */
public void debug(String msg, Throwable t) {
log(LOG_LEVEL_DEBUG, msg, t);
}
/** Are {@code info} messages currently enabled? */
public boolean isInfoEnabled() {
return true;
}
/**
* A simple implementation which logs messages of level INFO according to
* the format outlined above.
*/
public void info(String msg) {
log(LOG_LEVEL_INFO, msg, null);
}
/**
* Perform single parameter substitution before logging the message of level
* INFO according to the format outlined above.
*/
public void info(String format, Object arg) {
formatAndLog(LOG_LEVEL_INFO, format, arg, null);
}
/**
* Perform double parameter substitution before logging the message of level
* INFO according to the format outlined above.
*/
public void info(String format, Object arg1, Object arg2) {
formatAndLog(LOG_LEVEL_INFO, format, arg1, arg2);
}
/**
* Perform double parameter substitution before logging the message of level
* INFO according to the format outlined above.
*/
public void info(String format, Object... argArray) {
formatAndLog(LOG_LEVEL_INFO, format, argArray);
}
/** Log a message of level INFO, including an exception. */
public void info(String msg, Throwable t) {
log(LOG_LEVEL_INFO, msg, t);
}
/** Are {@code warn} messages currently enabled? */
public boolean isWarnEnabled() {
return true;
}
/**
* A simple implementation which always logs messages of level WARN
* according to the format outlined above.
*/
public void warn(String msg) {
log(LOG_LEVEL_WARN, msg, null);
}
/**
* Perform single parameter substitution before logging the message of level
* WARN according to the format outlined above.
*/
public void warn(String format, Object arg) {
formatAndLog(LOG_LEVEL_WARN, format, arg, null);
}
/**
* Perform double parameter substitution before logging the message of level
* WARN according to the format outlined above.
*/
public void warn(String format, Object arg1, Object arg2) {
formatAndLog(LOG_LEVEL_WARN, format, arg1, arg2);
}
/**
* Perform double parameter substitution before logging the message of level
* WARN according to the format outlined above.
*/
public void warn(String format, Object... argArray) {
formatAndLog(LOG_LEVEL_WARN, format, argArray);
}
/** Log a message of level WARN, including an exception. */
public void warn(String msg, Throwable t) {
log(LOG_LEVEL_WARN, msg, t);
}
/** Are {@code error} messages currently enabled? */
public boolean isErrorEnabled() {
return true;
}
/**
* A simple implementation which always logs messages of level ERROR
* according to the format outlined above.
*/
public void error(String msg) {
log(LOG_LEVEL_ERROR, msg, null);
}
/**
* Perform single parameter substitution before logging the message of level
* ERROR according to the format outlined above.
*/
public void error(String format, Object arg) {
formatAndLog(LOG_LEVEL_ERROR, format, arg, null);
}
/**
* Perform double parameter substitution before logging the message of level
* ERROR according to the format outlined above.
*/
public void error(String format, Object arg1, Object arg2) {
formatAndLog(LOG_LEVEL_ERROR, format, arg1, arg2);
}
/**
* Perform double parameter substitution before logging the message of level
* ERROR according to the format outlined above.
*/
public void error(String format, Object... argArray) {
formatAndLog(LOG_LEVEL_ERROR, format, argArray);
}
/** Log a message of level ERROR, including an exception. */
public void error(String msg, Throwable t) {
log(LOG_LEVEL_ERROR, msg, t);
}
public void log(LoggingEvent event) {
int levelInt = event.getLevel().toInt();
if (!isLevelEnabled(levelInt)) {
return;
}
FormattingTuple tp = MessageFormatter.arrayFormat(event.getMessage(), event.getArgumentArray(), event.getThrowable());
log(levelInt, tp.getMessage(), event.getThrowable());
}
private boolean isLevelEnabled(int levelInt) {
return levelInt >= LocationAwareLogger.INFO_INT;
}
}