1 package org.eclipse.aether.spi.log; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 /** 23 * A simple logger to facilitate emission of diagnostic messages. In general, unrecoverable errors should be reported 24 * via exceptions and informational notifications should be reported via events, hence this logger interface focuses on 25 * support for tracing. 26 * 27 * @deprecated Use SLF4J instead 28 */ 29 @Deprecated 30 public interface Logger 31 { 32 33 /** 34 * Indicates whether debug logging is enabled. 35 * 36 * @return {@code true} if debug logging is enabled, {@code false} otherwise. 37 */ 38 boolean isDebugEnabled(); 39 40 /** 41 * Emits the specified message. 42 * 43 * @param msg The message to log, must not be {@code null}. 44 */ 45 void debug( String msg ); 46 47 /** 48 * Emits the specified message along with a stack trace of the given exception. 49 * 50 * @param msg The message to log, must not be {@code null}. 51 * @param error The exception to log, may be {@code null}. 52 */ 53 void debug( String msg, Throwable error ); 54 55 /** 56 * Indicates whether warn logging is enabled. 57 * 58 * @return {@code true} if warn logging is enabled, {@code false} otherwise. 59 */ 60 boolean isWarnEnabled(); 61 62 /** 63 * Emits the specified message. 64 * 65 * @param msg The message to log, must not be {@code null}. 66 */ 67 void warn( String msg ); 68 69 /** 70 * Emits the specified message along with a stack trace of the given exception. 71 * 72 * @param msg The message to log, must not be {@code null}. 73 * @param error The exception to log, may be {@code null}. 74 */ 75 void warn( String msg, Throwable error ); 76 77 }