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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.logging.log4j.spi;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.Marker;
import org.apache.logging.log4j.message.Message;
import org.apache.logging.log4j.util.MessageSupplier;
import org.apache.logging.log4j.util.Supplier;
/**
* Extends the {@code Logger} interface with methods that facilitate implementing or extending {@code Logger}s. Users
* should not need to use this interface.
*/
public interface ExtendedLogger extends Logger {
/**
* Determines if logging is enabled.
*
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The Message.
* @param t A Throwable.
* @return True if logging is enabled, false otherwise.
*/
boolean isEnabled(Level level, Marker marker, Message message, Throwable t);
/**
* Determines if logging is enabled.
*
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
* @param t A Throwable.
* @return True if logging is enabled, false otherwise.
*/
boolean isEnabled(Level level, Marker marker, Object message, Throwable t);
/**
* Determines if logging is enabled.
*
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
* @return True if logging is enabled, false otherwise.
* @param t the exception to log, including its stack trace.
*/
boolean isEnabled(Level level, Marker marker, String message, Throwable t);
/**
* Determine if logging is enabled.
*
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
* @return True if logging is enabled, false otherwise.
*/
boolean isEnabled(Level level, Marker marker, String message);
/**
* Determines if logging is enabled.
*
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
* @param params The parameters.
* @return True if logging is enabled, false otherwise.
*/
boolean isEnabled(Level level, Marker marker, String message, Object... params);
/**
* Logs a message if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The Message.
* @param t the exception to log, including its stack trace.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, Message message, Throwable t);
/**
* Logs a message if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
* @param t the exception to log, including its stack trace.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, Object message, Throwable t);
/**
* Logs a message if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
* @param t the exception to log, including its stack trace.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, String message, Throwable t);
/**
* Logs a message if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, String message);
/**
* Logs a message if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message format.
* @param params The message parameters.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, String message, Object... params);
/**
* Always logs a message at the specified level. It is the responsibility of the caller to ensure the specified
* level is enabled.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The Message.
* @param t the exception to log, including its stack trace.
*/
void logMessage(String fqcn, Level level, Marker marker, Message message, Throwable t);
/**
* Logs a message which is only to be constructed if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param msgSupplier A function, which when called, produces the desired log message.
* @param t the exception to log, including its stack trace.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, MessageSupplier msgSupplier, Throwable t);
/**
* Logs a message whose parameters are only to be constructed if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param message The message format.
* @param paramSuppliers An array of functions, which when called, produce the desired log message parameters.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, String message, Supplier... paramSuppliers);
/**
* Logs a message which is only to be constructed if the specified level is active.
*
* @param fqcn The fully qualified class name of the logger entry point, used to determine the caller class and
* method when location information needs to be logged.
* @param level The logging Level to check.
* @param marker A Marker or null.
* @param msgSupplier A function, which when called, produces the desired log message.
* @param t the exception to log, including its stack trace.
*/
void logIfEnabled(String fqcn, Level level, Marker marker, Supplier msgSupplier, Throwable t);
}
