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 }