/* * Copyright 2017 MongoDB, Inc. * * 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 org.bson.diagnostics; /** * This class is not part of the public API. It may be removed or changed at any time. * */ public interface Logger { /** * Return the name of this <code>Logger</code> instance. * * @return name of this logger instance */ String getName(); /** * Is the logger instance enabled for the TRACE level? * * @return True if this Logger is enabled for the TRACE level, false otherwise. * @since 1.4 */ boolean isTraceEnabled(); /** * Log a message at the TRACE level. * * @param msg the message string to be logged * @since 1.4 */ void trace(String msg); /** * 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 * @since 1.4 */ void trace(String msg, 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 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); /** * 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 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); /** * 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 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); /** * 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 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); }