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Java 1.8+ Library with tons of utility classes required in all projects
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/*
* Copyright (C) 2014-2024 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* 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.
*/
package com.helger.commons.log;
import java.util.function.Supplier;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.PresentForCodeCoverage;
import com.helger.commons.error.level.EErrorLevel;
import com.helger.commons.error.level.IErrorLevel;
import com.helger.commons.error.level.IHasErrorLevel;
/**
* Some utility functions to help integrating the {@link IErrorLevel} enum in
* this package with SLF4J logger.
*
* @author Philip Helger
*/
@Immutable
public final class LogHelper
{
/**
* Abstraction interface for logger.is...Enabled () depending on
* the error level.
*
* @author Philip Helger
* @since 9.1.3
*/
@FunctionalInterface
public interface IFuncIsLoggingEnabled
{
boolean isEnabled ();
}
/**
* Abstraction interface for logger.debug or
* logger.info depending on the error level.
*
* @author Philip Helger
* @since 9.1.3
*/
@FunctionalInterface
public interface IFuncLogger
{
void log (@Nonnull String sMsg, @Nullable Throwable t);
}
@PresentForCodeCoverage
private static final LogHelper INSTANCE = new LogHelper ();
private LogHelper ()
{}
@Nonnull
public static IFuncIsLoggingEnabled getFuncIsEnabled (@Nonnull final Logger aLogger, @Nonnull final IErrorLevel aErrorLevel)
{
ValueEnforcer.notNull (aLogger, "Logger");
ValueEnforcer.notNull (aErrorLevel, "ErrorLevel");
if (aErrorLevel.isGE (EErrorLevel.ERROR))
return aLogger::isErrorEnabled;
if (aErrorLevel.isGE (EErrorLevel.WARN))
return aLogger::isWarnEnabled;
if (aErrorLevel.isGE (EErrorLevel.INFO))
return aLogger::isInfoEnabled;
return aLogger::isDebugEnabled;
}
@Nonnull
public static IFuncLogger getFuncLogger (@Nonnull final Logger aLogger, @Nonnull final IErrorLevel aErrorLevel)
{
ValueEnforcer.notNull (aLogger, "Logger");
ValueEnforcer.notNull (aErrorLevel, "ErrorLevel");
if (aErrorLevel.isGE (EErrorLevel.ERROR))
return aLogger::error;
if (aErrorLevel.isGE (EErrorLevel.WARN))
return aLogger::warn;
if (aErrorLevel.isGE (EErrorLevel.INFO))
return aLogger::info;
return aLogger::debug;
}
/**
* Check if logging is enabled for the passed class based on the error level
* provider by the passed object
*
* @param aLoggingClass
* The class to determine the logger from. May not be null
* .
* @param aErrorLevelProvider
* The error level provider. May not be null.
* @return true if the respective log level is allowed,
* false if not
*/
public static boolean isEnabled (@Nonnull final Class aLoggingClass, @Nonnull final IHasErrorLevel aErrorLevelProvider)
{
return isEnabled (LoggerFactory.getLogger (aLoggingClass), aErrorLevelProvider.getErrorLevel ());
}
/**
* Check if logging is enabled for the passed logger based on the error level
* provider by the passed object
*
* @param aLogger
* The logger. May not be null.
* @param aErrorLevelProvider
* The error level provider. May not be null.
* @return true if the respective log level is allowed,
* false if not
*/
public static boolean isEnabled (@Nonnull final Logger aLogger, @Nonnull final IHasErrorLevel aErrorLevelProvider)
{
return isEnabled (aLogger, aErrorLevelProvider.getErrorLevel ());
}
/**
* Check if logging is enabled for the passed class based on the error level
* provided
*
* @param aLoggingClass
* The class to determine the logger from. May not be null
* .
* @param aErrorLevel
* The error level. May not be null.
* @return true if the respective log level is allowed,
* false if not
*/
public static boolean isEnabled (@Nonnull final Class aLoggingClass, @Nonnull final IErrorLevel aErrorLevel)
{
return isEnabled (LoggerFactory.getLogger (aLoggingClass), aErrorLevel);
}
/**
* Check if logging is enabled for the passed logger based on the error level
* provided
*
* @param aLogger
* The logger. May not be null.
* @param aErrorLevel
* The error level. May not be null.
* @return true if the respective log level is allowed,
* false if not
*/
public static boolean isEnabled (@Nonnull final Logger aLogger, @Nonnull final IErrorLevel aErrorLevel)
{
return getFuncIsEnabled (aLogger, aErrorLevel).isEnabled ();
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevelProvider
* Error level provided to use. May not be null.
* @param sMsg
* The message to log. May not be null.
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final String sMsg)
{
log (aLoggingClass, aErrorLevelProvider.getErrorLevel (), sMsg, null);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevelProvider
* Error level provided to use. May not be null.
* @param sMsg
* The message to log. May not be null.
* @param t
* Optional exception that occurred. May be null.
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final String sMsg,
@Nullable final Throwable t)
{
log (LoggerFactory.getLogger (aLoggingClass), aErrorLevelProvider.getErrorLevel (), sMsg, t);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevelProvider
* Error level provider to use. May not be null.
* @param sMsg
* The message to log. May not be null.
*/
public static void log (@Nonnull final Logger aLogger, @Nonnull final IHasErrorLevel aErrorLevelProvider, @Nonnull final String sMsg)
{
log (aLogger, aErrorLevelProvider.getErrorLevel (), sMsg, null);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevelProvider
* Error level provider to use. May not be null.
* @param sMsg
* The message to log. May not be null.
* @param t
* Optional exception that occurred. May be null.
*/
public static void log (@Nonnull final Logger aLogger,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final String sMsg,
@Nullable final Throwable t)
{
log (aLogger, aErrorLevelProvider.getErrorLevel (), sMsg, t);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param sMsg
* The message to log. May not be null.
*/
public static void log (@Nonnull final Class aLoggingClass, @Nonnull final IErrorLevel aErrorLevel, @Nonnull final String sMsg)
{
log (aLoggingClass, aErrorLevel, sMsg, null);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param sMsg
* The message to log. May not be null.
* @param t
* Optional exception that occurred. May be null.
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IErrorLevel aErrorLevel,
@Nonnull final String sMsg,
@Nullable final Throwable t)
{
log (LoggerFactory.getLogger (aLoggingClass), aErrorLevel, sMsg, t);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param sMsg
* The message to log. May not be null.
*/
public static void log (@Nonnull final Logger aLogger, @Nonnull final IErrorLevel aErrorLevel, @Nonnull final String sMsg)
{
log (aLogger, aErrorLevel, sMsg, null);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param sMsg
* The message to log. May not be null.
* @param t
* Optional exception that occurred. May be null.
*/
public static void log (@Nonnull final Logger aLogger,
@Nonnull final IErrorLevel aErrorLevel,
@Nonnull final String sMsg,
@Nullable final Throwable t)
{
ValueEnforcer.notNull (aLogger, "Logger");
ValueEnforcer.notNull (aErrorLevel, "ErrorLevel");
ValueEnforcer.notNull (sMsg, "Message");
if (isEnabled (aLogger, aErrorLevel))
getFuncLogger (aLogger, aErrorLevel).log (sMsg, t);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevelProvider
* Error level provided to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @since 9.1.3
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final Supplier aMsgSupplier)
{
log (aLoggingClass, aErrorLevelProvider.getErrorLevel (), aMsgSupplier, null);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevelProvider
* Error level provided to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @param t
* Optional exception that occurred. May be null.
* @since 9.1.3
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final Supplier aMsgSupplier,
@Nullable final Throwable t)
{
log (LoggerFactory.getLogger (aLoggingClass), aErrorLevelProvider.getErrorLevel (), aMsgSupplier, t);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevelProvider
* Error level provider to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @since 9.1.3
*/
public static void log (@Nonnull final Logger aLogger,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final Supplier aMsgSupplier)
{
log (aLogger, aErrorLevelProvider.getErrorLevel (), aMsgSupplier, null);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevelProvider
* Error level provider to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @param t
* Optional exception that occurred. May be null.
* @since 9.1.3
*/
public static void log (@Nonnull final Logger aLogger,
@Nonnull final IHasErrorLevel aErrorLevelProvider,
@Nonnull final Supplier aMsgSupplier,
@Nullable final Throwable t)
{
log (aLogger, aErrorLevelProvider.getErrorLevel (), aMsgSupplier, t);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @since 9.1.3
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IErrorLevel aErrorLevel,
@Nonnull final Supplier aMsgSupplier)
{
log (aLoggingClass, aErrorLevel, aMsgSupplier, null);
}
/**
* Generically log something
*
* @param aLoggingClass
* Logging class to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @param t
* Optional exception that occurred. May be null.
* @since 9.1.3
*/
public static void log (@Nonnull final Class aLoggingClass,
@Nonnull final IErrorLevel aErrorLevel,
@Nonnull final Supplier aMsgSupplier,
@Nullable final Throwable t)
{
log (LoggerFactory.getLogger (aLoggingClass), aErrorLevel, aMsgSupplier, t);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @since 9.1.3
*/
public static void log (@Nonnull final Logger aLogger,
@Nonnull final IErrorLevel aErrorLevel,
@Nonnull final Supplier aMsgSupplier)
{
log (aLogger, aErrorLevel, aMsgSupplier, null);
}
/**
* Generically log something
*
* @param aLogger
* Logger to use. May not be null.
* @param aErrorLevel
* Error level to use. May not be null.
* @param aMsgSupplier
* Message supplier to use. The supplier is only invoked if the log
* level is enabled on the provided logger. May not be
* null.
* @param t
* Optional exception that occurred. May be null.
* @since 9.1.3
*/
public static void log (@Nonnull final Logger aLogger,
@Nonnull final IErrorLevel aErrorLevel,
@Nonnull final Supplier aMsgSupplier,
@Nullable final Throwable t)
{
ValueEnforcer.notNull (aLogger, "Logger");
ValueEnforcer.notNull (aErrorLevel, "ErrorLevel");
ValueEnforcer.notNull (aMsgSupplier, "MessageSupplier");
if (isEnabled (aLogger, aErrorLevel))
getFuncLogger (aLogger, aErrorLevel).log (aMsgSupplier.get (), t);
}
}