/interpreter/tags/at2dist041108/src/edu/vub/at/util/logging/Logging.java

 1/**
 2 * AmbientTalk/2 Project
 3 * Logging.java created on 20-feb-2007 at 10:05:26
 4 * (c) Programming Technology Lab, 2006 - 2007
 5 * Authors: Tom Van Cutsem & Stijn Mostinckx
 6 * 
 7 * Permission is hereby granted, free of charge, to any person
 8 * obtaining a copy of this software and associated documentation
 9 * files (the "Software"), to deal in the Software without
10 * restriction, including without limitation the rights to use,
11 * copy, modify, merge, publish, distribute, sublicense, and/or
12 * sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following
14 * conditions:
15 *
16 * The above copyright notice and this permission notice shall be
17 * included in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
21 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
23 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
24 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26 * OTHER DEALINGS IN THE SOFTWARE.
27 */
28package edu.vub.at.util.logging;
29
30import java.io.IOException;
31import java.util.Enumeration;
32import java.util.Properties;
33
34
35/**
36 * Auxiliary class used to more easily access AmbientTalk/2 loggers.
37 * 
38 * @author tvcutsem
39 */
40public final class Logging {
41
42	/**
43	 * Logs information regarding all event loops in the AT/2 runtime.
44	 */
45	public static final Logger EventLoop_LOG = Logger.getInstance("at.eventloops");
46	
47	/**
48	 * Logs information of all actor event loops in the AT/2 runtime.
49	 */
50	public static final Logger Actor_LOG = Logger.getInstance("at.eventloops.actors");
51
52	/**
53	 * Logs information of all remote reference event loops in the AT/2 runtime.
54	 */
55	public static final Logger RemoteRef_LOG = Logger.getInstance("at.eventloops.remoterefs");
56	
57	/**
58	 * Logs information of the VM event loops of the AT/2 runtime.
59	 */
60	public static final Logger VirtualMachine_LOG = Logger.getInstance("at.eventloops.vm");
61
62	/**
63	 * Logs information related to the object path, init file, etc.
64	 */
65	public static final Logger Init_LOG = Logger.getInstance("at.init");
66	
67	/**
68	 * Logs information related to network communication
69	 */
70	public static final Logger Network_LOG = Logger.getInstance("at.network");
71	
72
73	static {
74		// intialize the Logging API
75	
76		Properties props = new Properties();
77		try {
78			props.load(Logging.class.getResourceAsStream("logging.props"));
79			Enumeration allProperties = props.propertyNames();
80			// interpret each KEY=VALUE pair in the log file as
81			// Logger(KEY).setPriority(VALUE)
82			// where KEY = the name of a logger and VALUE = a priority level (e.g. WARN, DEBUG, ...)
83			while (allProperties.hasMoreElements()) {
84				String loggerName = (String) allProperties.nextElement();
85				try {
86					Logger.getInstance(loggerName).setPriority(props.getProperty(loggerName));
87				} catch (IllegalArgumentException e) {
88					System.err.println("Illegal priority level for logger " + loggerName + ": " + props.getProperty(loggerName));
89				}
90			}
91		} catch (IOException e) {
92			System.err.println("Could not read properties file: " + e.getMessage());
93		}
94	}
95	
96}