1 package org.apache.maven.cli.logging;
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 import org.codehaus.plexus.logging.Logger;
23 import org.codehaus.plexus.logging.LoggerManager;
24 import org.slf4j.ILoggerFactory;
25 import org.slf4j.LoggerFactory;
26
27 /**
28 * Use an SLF4J {@link org.slf4j.ILoggerFactory} as a backing for a Plexus
29 * {@link org.codehaus.plexus.logging.LoggerManager},
30 * ignoring Plexus logger API parts that are not classical and probably not really used.
31 *
32 * @author Jason van Zyl
33 * @since 3.1
34 */
35 public class Slf4jLoggerManager
36 implements LoggerManager
37 {
38
39 private ILoggerFactory loggerFactory;
40
41 public Slf4jLoggerManager()
42 {
43 loggerFactory = LoggerFactory.getILoggerFactory();
44 }
45
46 public Logger getLoggerForComponent( String role )
47 {
48 return new Slf4jLogger( loggerFactory.getLogger( role ) );
49 }
50
51 /**
52 * The logger name for a component with a non-null hint is <code>role.hint</code>.
53 * <b>Warning</b>: this does not conform to logger name as class name convention.
54 * (and what about <code>null</code> and <code>default</code> hint equivalence?)
55 */
56 public Logger getLoggerForComponent( String role, String hint )
57 {
58 return ( null == hint
59 ? getLoggerForComponent( role )
60 : new Slf4jLogger( loggerFactory.getLogger( role + '.' + hint ) ) );
61 }
62
63 //
64 // Trying to give loggers back is a bad idea. Ceki said so :-)
65 // notice to self: what was this method supposed to do?
66 //
67 /**
68 * <b>Warning</b>: ignored.
69 */
70 public void returnComponentLogger( String role )
71 {
72 }
73
74 /**
75 * <b>Warning</b>: ignored.
76 */
77 public void returnComponentLogger( String role, String hint )
78 {
79 }
80
81 /**
82 * <b>Warning</b>: ignored (always return <code>0</code>).
83 */
84 public int getThreshold()
85 {
86 return 0;
87 }
88
89 /**
90 * <b>Warning</b>: ignored.
91 */
92 public void setThreshold( int threshold )
93 {
94 }
95
96 /**
97 * <b>Warning</b>: ignored.
98 */
99 public void setThresholds( int threshold )
100 {
101 }
102
103 /**
104 * <b>Warning</b>: ignored (always return <code>0</code>).
105 */
106 public int getActiveLoggerCount()
107 {
108 return 0;
109 }
110
111 }