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.apache.maven.cli.logging;
20
21 import org.codehaus.plexus.logging.Logger;
22 import org.codehaus.plexus.logging.LoggerManager;
23 import org.slf4j.ILoggerFactory;
24 import org.slf4j.LoggerFactory;
25
26 /**
27 * Use an SLF4J {@link org.slf4j.ILoggerFactory} as a backing for a Plexus
28 * {@link org.codehaus.plexus.logging.LoggerManager},
29 * ignoring Plexus logger API parts that are not classical and probably not really used.
30 *
31 * @since 3.1
32 */
33 public class Slf4jLoggerManager implements LoggerManager {
34
35 private ILoggerFactory loggerFactory;
36
37 public Slf4jLoggerManager() {
38 loggerFactory = LoggerFactory.getILoggerFactory();
39 }
40
41 public Logger getLoggerForComponent(String role) {
42 return new Slf4jLogger(loggerFactory.getLogger(role));
43 }
44
45 /**
46 * The logger name for a component with a non-null hint is <code>role.hint</code>.
47 * <b>Warning</b>: this does not conform to logger name as class name convention.
48 * (and what about <code>null</code> and <code>default</code> hint equivalence?)
49 */
50 public Logger getLoggerForComponent(String role, String hint) {
51 return (null == hint
52 ? getLoggerForComponent(role)
53 : new Slf4jLogger(loggerFactory.getLogger(role + '.' + hint)));
54 }
55
56 //
57 // Trying to give loggers back is a bad idea. Ceki said so :-)
58 // notice to self: what was this method supposed to do?
59 //
60 /**
61 * <b>Warning</b>: ignored.
62 */
63 public void returnComponentLogger(String role) {}
64
65 /**
66 * <b>Warning</b>: ignored.
67 */
68 public void returnComponentLogger(String role, String hint) {}
69
70 /**
71 * <b>Warning</b>: ignored (always return <code>0</code>).
72 */
73 public int getThreshold() {
74 return 0;
75 }
76
77 /**
78 * <b>Warning</b>: ignored.
79 */
80 public void setThreshold(int threshold) {}
81
82 /**
83 * <b>Warning</b>: ignored.
84 */
85 public void setThresholds(int threshold) {}
86
87 /**
88 * <b>Warning</b>: ignored (always return <code>0</code>).
89 */
90 public int getActiveLoggerCount() {
91 return 0;
92 }
93 }