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/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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:
*
* https://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.
*/
/**
* 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 io.netty.util.internal.logging;
/**
* Internal-use-only logger used by Netty. DO NOT
* access this class outside of Netty.
*/
public interface InternalLogger {
/**
* Return the name of this {@link InternalLogger} instance.
*
* @return name of this logger instance
*/
String name();
/**
* Is the logger instance enabled for the TRACE level?
*
* @return True if this Logger is enabled for the TRACE level,
* false otherwise.
*/
boolean isTraceEnabled();
/**
* Log a message at the TRACE level.
*
* @param msg the message string to be logged
*/
void trace(String msg);
/**
* Log a message at the TRACE level according to the specified format
* and argument.
*
* This form avoids superfluous object creation when the logger
* is disabled for the TRACE level.
*
* @param format the format string
* @param arg the argument
*/
void trace(String format, Object arg);
/**
* Log a message at the TRACE level according to the specified format
* and arguments.
*
* This form avoids superfluous object creation when the logger
* is disabled for the TRACE level.
*
* @param format the format string
* @param argA the first argument
* @param argB the second argument
*/
void trace(String format, Object argA, Object argB);
/**
* Log a message at the TRACE level according to the specified format
* and arguments.
*
* This form avoids superfluous string concatenation when the logger
* is disabled for the TRACE level. However, this variant incurs the hidden
* (and relatively small) cost of creating an {@code Object[]} before invoking the method,
* even if this logger is disabled for TRACE. The variants taking {@link #trace(String, Object) one} and
* {@link #trace(String, Object, Object) two} arguments exist solely in order to avoid this hidden cost.
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
void trace(String format, Object... arguments);
/**
* Log an exception (throwable) at the TRACE level with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
void trace(String msg, Throwable t);
/**
* Log an exception (throwable) at the TRACE level.
*
* @param t the exception (throwable) to log
*/
void trace(Throwable t);
/**
* Is the logger instance enabled for the DEBUG level?
*
* @return True if this Logger is enabled for the DEBUG level,
* false otherwise.
*/
boolean isDebugEnabled();
/**
* Log a message at the DEBUG level.
*
* @param msg the message string to be logged
*/
void debug(String msg);
/**
* Log a message at the DEBUG level according to the specified format
* and argument.
*
* This form avoids superfluous object creation when the logger
* is disabled for the DEBUG level.
*
* @param format the format string
* @param arg the argument
*/
void debug(String format, Object arg);
/**
* Log a message at the DEBUG level according to the specified format
* and arguments.
*
* This form avoids superfluous object creation when the logger
* is disabled for the DEBUG level.
*
* @param format the format string
* @param argA the first argument
* @param argB the second argument
*/
void debug(String format, Object argA, Object argB);
/**
* Log a message at the DEBUG level according to the specified format
* and arguments.
*
* This form avoids superfluous string concatenation when the logger
* is disabled for the DEBUG level. However, this variant incurs the hidden
* (and relatively small) cost of creating an {@code Object[]} before invoking the method,
* even if this logger is disabled for DEBUG. The variants taking
* {@link #debug(String, Object) one} and {@link #debug(String, Object, Object) two}
* arguments exist solely in order to avoid this hidden cost.
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
void debug(String format, Object... arguments);
/**
* Log an exception (throwable) at the DEBUG level with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
void debug(String msg, Throwable t);
/**
* Log an exception (throwable) at the DEBUG level.
*
* @param t the exception (throwable) to log
*/
void debug(Throwable t);
/**
* Is the logger instance enabled for the INFO level?
*
* @return True if this Logger is enabled for the INFO level,
* false otherwise.
*/
boolean isInfoEnabled();
/**
* Log a message at the INFO level.
*
* @param msg the message string to be logged
*/
void info(String msg);
/**
* Log a message at the INFO level according to the specified format
* and argument.
*
* This form avoids superfluous object creation when the logger
* is disabled for the INFO level.
*
* @param format the format string
* @param arg the argument
*/
void info(String format, Object arg);
/**
* Log a message at the INFO level according to the specified format
* and arguments.
*
* This form avoids superfluous object creation when the logger
* is disabled for the INFO level.
*
* @param format the format string
* @param argA the first argument
* @param argB the second argument
*/
void info(String format, Object argA, Object argB);
/**
* Log a message at the INFO level according to the specified format
* and arguments.
*
* This form avoids superfluous string concatenation when the logger
* is disabled for the INFO level. However, this variant incurs the hidden
* (and relatively small) cost of creating an {@code Object[]} before invoking the method,
* even if this logger is disabled for INFO. The variants taking
* {@link #info(String, Object) one} and {@link #info(String, Object, Object) two}
* arguments exist solely in order to avoid this hidden cost.
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
void info(String format, Object... arguments);
/**
* Log an exception (throwable) at the INFO level with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
void info(String msg, Throwable t);
/**
* Log an exception (throwable) at the INFO level.
*
* @param t the exception (throwable) to log
*/
void info(Throwable t);
/**
* Is the logger instance enabled for the WARN level?
*
* @return True if this Logger is enabled for the WARN level,
* false otherwise.
*/
boolean isWarnEnabled();
/**
* Log a message at the WARN level.
*
* @param msg the message string to be logged
*/
void warn(String msg);
/**
* Log a message at the WARN level according to the specified format
* and argument.
*
* This form avoids superfluous object creation when the logger
* is disabled for the WARN level.
*
* @param format the format string
* @param arg the argument
*/
void warn(String format, Object arg);
/**
* Log a message at the WARN level according to the specified format
* and arguments.
*
* This form avoids superfluous string concatenation when the logger
* is disabled for the WARN level. However, this variant incurs the hidden
* (and relatively small) cost of creating an {@code Object[]} before invoking the method,
* even if this logger is disabled for WARN. The variants taking
* {@link #warn(String, Object) one} and {@link #warn(String, Object, Object) two}
* arguments exist solely in order to avoid this hidden cost.
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
void warn(String format, Object... arguments);
/**
* Log a message at the WARN level according to the specified format
* and arguments.
*
* This form avoids superfluous object creation when the logger
* is disabled for the WARN level.
*
* @param format the format string
* @param argA the first argument
* @param argB the second argument
*/
void warn(String format, Object argA, Object argB);
/**
* Log an exception (throwable) at the WARN level with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
void warn(String msg, Throwable t);
/**
* Log an exception (throwable) at the WARN level.
*
* @param t the exception (throwable) to log
*/
void warn(Throwable t);
/**
* Is the logger instance enabled for the ERROR level?
*
* @return True if this Logger is enabled for the ERROR level,
* false otherwise.
*/
boolean isErrorEnabled();
/**
* Log a message at the ERROR level.
*
* @param msg the message string to be logged
*/
void error(String msg);
/**
* Log a message at the ERROR level according to the specified format
* and argument.
*
* This form avoids superfluous object creation when the logger
* is disabled for the ERROR level.
*
* @param format the format string
* @param arg the argument
*/
void error(String format, Object arg);
/**
* Log a message at the ERROR level according to the specified format
* and arguments.
*
* This form avoids superfluous object creation when the logger
* is disabled for the ERROR level.
*
* @param format the format string
* @param argA the first argument
* @param argB the second argument
*/
void error(String format, Object argA, Object argB);
/**
* Log a message at the ERROR level according to the specified format
* and arguments.
*
* This form avoids superfluous string concatenation when the logger
* is disabled for the ERROR level. However, this variant incurs the hidden
* (and relatively small) cost of creating an {@code Object[]} before invoking the method,
* even if this logger is disabled for ERROR. The variants taking
* {@link #error(String, Object) one} and {@link #error(String, Object, Object) two}
* arguments exist solely in order to avoid this hidden cost.
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
void error(String format, Object... arguments);
/**
* Log an exception (throwable) at the ERROR level with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
void error(String msg, Throwable t);
/**
* Log an exception (throwable) at the ERROR level.
*
* @param t the exception (throwable) to log
*/
void error(Throwable t);
/**
* Is the logger instance enabled for the specified {@code level}?
*
* @return True if this Logger is enabled for the specified {@code level},
* false otherwise.
*/
boolean isEnabled(InternalLogLevel level);
/**
* Log a message at the specified {@code level}.
*
* @param msg the message string to be logged
*/
void log(InternalLogLevel level, String msg);
/**
* Log a message at the specified {@code level} according to the specified format
* and argument.
*
* This form avoids superfluous object creation when the logger
* is disabled for the specified {@code level}.
*
* @param format the format string
* @param arg the argument
*/
void log(InternalLogLevel level, String format, Object arg);
/**
* Log a message at the specified {@code level} according to the specified format
* and arguments.
*
* This form avoids superfluous object creation when the logger
* is disabled for the specified {@code level}.
*
* @param format the format string
* @param argA the first argument
* @param argB the second argument
*/
void log(InternalLogLevel level, String format, Object argA, Object argB);
/**
* Log a message at the specified {@code level} according to the specified format
* and arguments.
*
* This form avoids superfluous string concatenation when the logger
* is disabled for the specified {@code level}. However, this variant incurs the hidden
* (and relatively small) cost of creating an {@code Object[]} before invoking the method,
* even if this logger is disabled for the specified {@code level}. The variants taking
* {@link #log(InternalLogLevel, String, Object) one} and
* {@link #log(InternalLogLevel, String, Object, Object) two} arguments exist solely
* in order to avoid this hidden cost.
*
* @param format the format string
* @param arguments a list of 3 or more arguments
*/
void log(InternalLogLevel level, String format, Object... arguments);
/**
* Log an exception (throwable) at the specified {@code level} with an
* accompanying message.
*
* @param msg the message accompanying the exception
* @param t the exception (throwable) to log
*/
void log(InternalLogLevel level, String msg, Throwable t);
/**
* Log an exception (throwable) at the specified {@code level}.
*
* @param t the exception (throwable) to log
*/
void log(InternalLogLevel level, Throwable t);
}