1 /* 2 * Copyright 2009 Red Hat, Inc. 3 * 4 * Red Hat licenses this file to you under the Apache License, version 2.0 5 * (the "License"); you may not use this file except in compliance with the 6 * License. You may obtain a copy of the License at: 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations 14 * under the License. 15 */ 16 package org.jboss.netty.logging; 17 18 /** 19 * <em>Internal-use-only</em> logger used by Netty. <strong>DO NOT</strong> 20 * access this class outside of Netty. 21 * 22 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a> 23 * @author <a href="http://gleamynode.net/">Trustin Lee</a> 24 * 25 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $ 26 */ 27 public interface InternalLogger { 28 /** 29 * Returns {@code true} if a DEBUG level message is logged. 30 */ 31 boolean isDebugEnabled(); 32 33 /** 34 * Returns {@code true} if an INFO level message is logged. 35 */ 36 boolean isInfoEnabled(); 37 38 /** 39 * Returns {@code true} if a WARN level message is logged. 40 */ 41 boolean isWarnEnabled(); 42 43 /** 44 * Returns {@code true} if an ERROR level message is logged. 45 */ 46 boolean isErrorEnabled(); 47 48 /** 49 * Returns {@code true} if the specified log level message is logged. 50 */ 51 boolean isEnabled(InternalLogLevel level); 52 53 /** 54 * Logs a DEBUG level message. 55 */ 56 void debug(String msg); 57 58 /** 59 * Logs a DEBUG level message. 60 */ 61 void debug(String msg, Throwable cause); 62 63 /** 64 * Logs an INFO level message. 65 */ 66 void info(String msg); 67 68 /** 69 * Logs an INFO level message. 70 */ 71 void info(String msg, Throwable cause); 72 73 /** 74 * Logs a WARN level message. 75 */ 76 void warn(String msg); 77 78 /** 79 * Logs a WARN level message. 80 */ 81 void warn(String msg, Throwable cause); 82 83 /** 84 * Logs an ERROR level message. 85 */ 86 void error(String msg); 87 88 /** 89 * Logs an ERROR level message. 90 */ 91 void error(String msg, Throwable cause); 92 93 /** 94 * Logs a message. 95 */ 96 void log(InternalLogLevel level, String msg); 97 98 /** 99 * Logs a message. 100 */ 101 void log(InternalLogLevel level, String msg, Throwable cause); 102 }