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