Java tutorial
/* * Copyright 2015 Google Inc. All Rights Reserved. * * 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.google.cloud.bigtable.config; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * Wrapper around {@link org.apache.commons.logging.Log} to conditionally format * messages if a specified log level is enabled. * * @author sduskis * @version $Id: $Id */ public class Logger { protected final Log log; /** * <p>Constructor for Logger.</p> * * @param logClass a {@link java.lang.Class} object. */ public Logger(Class<?> logClass) { this.log = LogFactory.getLog(logClass); } /** * <p>trace</p> * * @see Log#trace * @param message Format string. * @param args Arguments for format string. */ public void trace(String message, Object... args) { if (log.isTraceEnabled()) { log.trace(String.format(message, args)); } } /** * <p>debug</p> * * @see Log#debug * @param message Format string. * @param args Arguments for format string. */ public void debug(String message, Object... args) { if (log.isDebugEnabled()) { log.debug(String.format(message, args)); } } /** * <p>info</p> * * @see Log#info * @param message Format string. * @param args Arguments for format string. */ public void info(String message, Object... args) { if (log.isInfoEnabled()) { log.info(String.format(message, args)); } } /** * <p>info</p> * * @see Log#info * @param message Format string. * @param t a {@link java.lang.Throwable} object. * @param args Arguments for format string. */ public void info(String message, Throwable t, Object... args) { if (log.isInfoEnabled()) { log.info(String.format(message, args), t); } } /** * <p>warn</p> * * @see Log#warn * @param message Format string. * @param args Arguments for format string. */ public void warn(String message, Object... args) { if (log.isWarnEnabled()) { log.warn(String.format(message, args)); } } /** * <p>warn</p> * * @see Log#warn * @param message Format string. * @param t a {@link java.lang.Throwable} object. * @param args Arguments for format string. */ public void warn(String message, Throwable t, Object... args) { if (log.isWarnEnabled()) { log.warn(String.format(message, args), t); } } /** * <p>error</p> * * @see Log#error * @param message Format string. * @param args Arguments for format string. */ public void error(String message, Object... args) { if (log.isErrorEnabled()) { log.error(String.format(message, args)); } } /** * <p>error</p> * * @see Log#error * @param message Format string. * @param t a {@link java.lang.Throwable} object. * @param args Arguments for format string. */ public void error(String message, Throwable t, Object... args) { if (log.isErrorEnabled()) { log.error(String.format(message, args), t); } } /** * <p>fatal</p> * * @see Log#fatal * @param message a {@link java.lang.String} object. * @param args a {@link java.lang.Object} object. */ public void fatal(String message, Object... args) { if (log.isFatalEnabled()) { log.fatal(String.format(message, args)); } } /** * <p>fatal</p> * * @see Log#fatal * @param message Format string. * @param t a {@link java.lang.Throwable} object. * @param args Arguments for format string. */ public void fatal(String message, Throwable t, Object... args) { if (log.isFatalEnabled()) { log.fatal(String.format(message, args), t); } } }