org.slf4j.impl.StaticLoggerBinder Maven / Gradle / Ivy
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* Licensed under the Apache License, Version 2.0 (the "License");
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/*
* Created 21.10.2009
*
* Copyright (c) 2009-2012 SLF4J.ORG
*
* 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.impl;
import static org.slf4j.impl.AndroidLogger.LogLevel.DEBUG;
import static org.slf4j.impl.AndroidLogger.LogLevel.ERROR;
import static org.slf4j.impl.AndroidLogger.LogLevel.INFO;
import static org.slf4j.impl.AndroidLogger.LogLevel.OFF;
import static org.slf4j.impl.AndroidLogger.LogLevel.VERBOSE;
import static org.slf4j.impl.AndroidLogger.LogLevel.WARN;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Locale;
import org.slf4j.ILoggerFactory;
import org.slf4j.LoggerFactory;
import org.slf4j.spi.LoggerFactoryBinder;
import android.support.annotation.StringDef;
/**
* The binding of {@link LoggerFactory} class with an actual instance of
* {@link ILoggerFactory} is performed using information returned by this class.
*
* @author Ceki Gülcü
* @author Thorsten Möler
* @author CTW
*/
public class StaticLoggerBinder implements LoggerFactoryBinder {
/**
* The unique instance of this class.
*/
private static final StaticLoggerBinder SINGLETON = new StaticLoggerBinder();
/**
* Declare the version of the SLF4J API this implementation is compiled
* against. The value of this field is usually modified with each release.
*/
// to avoid constant folding by the compiler, this field must *not* be final
public static String REQUESTED_API_VERSION = "1.6.99"; // !final
/**
* The ILoggerFactory instance returned by the {@link #getLoggerFactory}
* method should always be the same object
*/
private final ILoggerFactory loggerFactory;
private StaticLoggerBinder() {
loggerFactory = new AndroidLoggerFactory();
}
/**
* Return the singleton of this class.
*
* @return the StaticLoggerBinder singleton
*/
public static StaticLoggerBinder getSingleton() {
return SINGLETON;
}
/**
* Set the log level to use for all Android logs that make use of SLF4J Android. This is one
* of {@link org.slf4j.impl.AndroidLogger.LogLevel}'s interface. By setting this, you will
* set the same level for all currently existing as well as newly created loggers.
*
* @param logLevel The {@link org.slf4j.impl.AndroidLogger.LogLevel} to set.
*/
public static void setLogLevel(@AndroidLogger.LogLevel final int logLevel) {
((AndroidLoggerFactory) getSingleton().getLoggerFactory()).loggerMap.forEach((k, v) -> v.setLogLevel(logLevel));
((AndroidLoggerFactory) getSingleton().getLoggerFactory()).setLogLevel(logLevel);
}
/**
* Return a valid mapping for log level by using the
* {@link org.slf4j.impl.AndroidLogger.LogLevel} {@link android.support.annotation.IntDef}
* annotation. Valid values from lower to higher priority, ignoring case:
*
* - VERBOSE
* - DEBUG
* - INFO
* - WARN
* - ERROR
* - OFF (turns logging off)
*
*
* @param logLevel The log level as a {@link String}. Use one of VERBOSE, DEBUG, INFO, WARN,
* ERROR and OFF.
* @return The mapped value for use with the SLF4J Android implementation, which you can then
* pass to {@link StaticLoggerBinder#setLogLevel(int)}. If an invalid value is passed, you
* will receive {@link org.slf4j.impl.AndroidLogger.LogLevel#WARN} as it is the default log
* level.
*/
@AndroidLogger.LogLevel
public static int getValidLogLevel(final String logLevel) {
switch (logLevel.toUpperCase(Locale.ENGLISH)) {
case LogLevelString.VERBOSE:
return VERBOSE;
case LogLevelString.DEBUG:
return DEBUG;
case LogLevelString.INFO:
return INFO;
case LogLevelString.WARN:
return WARN;
case LogLevelString.ERROR:
return ERROR;
case LogLevelString.OFF:
return OFF;
default:
return WARN;
}
}
@Override
public ILoggerFactory getLoggerFactory() {
return loggerFactory;
}
@Override
public String getLoggerFactoryClassStr() {
return AndroidLoggerFactory.class.getName();
}
@StringDef({ LogLevelString.VERBOSE, LogLevelString.DEBUG, LogLevelString.INFO, LogLevelString.WARN,
LogLevelString.ERROR, LogLevelString.OFF })
@Retention(RetentionPolicy.SOURCE)
private @interface LogLevelString {
String VERBOSE = "VERBOSE";
String DEBUG = "DEBUG";
String INFO = "INFO";
String WARN = "WARN";
String ERROR = "ERROR";
String OFF = "OFF";
}
}
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