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1   /*
2    * Copyright 2009 Red Hat, Inc.
3    *
4    * Red Hat licenses this file to you under the Apache License, version 2.0
5    * (the "License"); you may not use this file except in compliance with the
6    * License.  You may obtain a copy of the License at:
7    *
8    *    http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package org.jboss.netty.logging;
17  
18  /**
19   * <em>Internal-use-only</em> logger used by Netty.  <strong>DO NOT</strong>
20   * access this class outside of Netty.
21   *
22   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
23   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
24   *
25   * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
26   */
27  public interface InternalLogger {
28      /**
29       * Returns {@code true} if a DEBUG level message is logged.
30       */
31      boolean isDebugEnabled();
32  
33      /**
34       * Returns {@code true} if an INFO level message is logged.
35       */
36      boolean isInfoEnabled();
37  
38      /**
39       * Returns {@code true} if a WARN level message is logged.
40       */
41      boolean isWarnEnabled();
42  
43      /**
44       * Returns {@code true} if an ERROR level message is logged.
45       */
46      boolean isErrorEnabled();
47  
48      /**
49       * Returns {@code true} if the specified log level message is logged.
50       */
51      boolean isEnabled(InternalLogLevel level);
52  
53      /**
54       * Logs a DEBUG level message.
55       */
56      void debug(String msg);
57  
58      /**
59       * Logs a DEBUG level message.
60       */
61      void debug(String msg, Throwable cause);
62  
63      /**
64       * Logs an INFO level message.
65       */
66      void info(String msg);
67  
68      /**
69       * Logs an INFO level message.
70       */
71      void info(String msg, Throwable cause);
72  
73      /**
74       * Logs a WARN level message.
75       */
76      void warn(String msg);
77  
78      /**
79       * Logs a WARN level message.
80       */
81      void warn(String msg, Throwable cause);
82  
83      /**
84       * Logs an ERROR level message.
85       */
86      void error(String msg);
87  
88      /**
89       * Logs an ERROR level message.
90       */
91      void error(String msg, Throwable cause);
92  
93      /**
94       * Logs a message.
95       */
96      void log(InternalLogLevel level, String msg);
97  
98      /**
99       * Logs a message.
100      */
101     void log(InternalLogLevel level, String msg, Throwable cause);
102 }