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Java > Open Source Codes > net > sourceforge > groboutils > codecoverage > v2 > logger > MinDirChannelLoggerFactory


1 /*
2  * @(#)MinDirChannelLoggerFactory.java
3  *
4  * Copyright (C) 2003 Matt Albrecht
5  * groboclown@users.sourceforge.net
6  * http://groboutils.sourceforge.net
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the "Software"),
10  * to deal in the Software without restriction, including without limitation
11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12  * and/or sell copies of the Software, and to permit persons to whom the
13  * Software is furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice shall be included in
16  * all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24  * DEALINGS IN THE SOFTWARE.
25  */
26
27 package net.sourceforge.groboutils.codecoverage.v2.logger;
28
29 import java.io.File JavaDoc;
30 import java.util.Properties JavaDoc;
31
32 import net.sourceforge.groboutils.codecoverage.v2.IChannelLogger;
33 import net.sourceforge.groboutils.codecoverage.v2.IChannelLoggerFactory;
34
35
36 /**
37  * The singleton invoked at runtime to log each marked bytecode instruction
38  * covered.
39  * <P>
40  * This class needs to be fast, efficient, thread-safe, and classloader-safe.
41  * "Classloader-safe" means that it needs to be resiliant to multiple instances
42  * of this class being loaded, and possibly interfering with each other.
43  *
44  * @author Matt Albrecht <a HREF="mailto:groboclown@users.sourceforge.net">groboclown@users.sourceforge.net</a>
45  * @version $Date: 2003/12/03 22:17:31 $
46  * @since December 3, 2003
47  */
48 public class MinDirChannelLoggerFactory implements IChannelLoggerFactory
49 {
50     public static final String JavaDoc DIRECTORY_PROPERTY = "dir";
51     public static final String JavaDoc DEFAULT_DIRECTORY = "./.cover-logs";
52     
53     /**
54      * Creates a specific logger type. Initializes the logger based on the
55      * given collection of properties.
56      *
57      * @param propertyPrefix the prefix that all logger properties will begin
58      * with. Expect all logger-specific properties to be appended directly
59      * to this string.
60      * @param props the property collection to pull the logger properties from.
61      * @param channelIndex channel number to log to.
62      * @return the initialized logger.
63      */
64     public IChannelLogger createChannelLogger(
65             String JavaDoc propertyPrefix, Properties JavaDoc props, short channelIndex )
66     {
67         String JavaDoc directory = getDirectory( propertyPrefix, props );
68         File JavaDoc dir = new File JavaDoc( directory, Short.toString( channelIndex ) );
69         if (dir.exists())
70         {
71             if (!dir.isDirectory())
72             {
73                 System.err.println(
74                     "MinDirLogger base directory is a file.");
75                 dir = null;
76             }
77         }
78         else
79         {
80             dir.mkdirs();
81         }
82         return new MinDirChannelLogger( dir );
83     }
84     
85     
86     protected String JavaDoc getDirectory( String JavaDoc propertyPrefix, Properties JavaDoc props )
87     {
88         String JavaDoc directory = props.getProperty(
89             propertyPrefix + DIRECTORY_PROPERTY );
90         if (directory == null)
91         {
92             directory = DEFAULT_DIRECTORY;
93         }
94         return directory;
95     }
96 }
97
98
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