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