Mercurial > hg > blitz_condensed
comparison src/com/go/trove/log/FileLogStreamFactory.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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-1:000000000000 | 0:3dc0c5604566 |
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1 /* ==================================================================== | |
2 * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group | |
3 * ==================================================================== | |
4 * The Tea Software License, Version 1.1 | |
5 * | |
6 * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. | |
7 * | |
8 * Redistribution and use in source and binary forms, with or without | |
9 * modification, are permitted provided that the following conditions | |
10 * are met: | |
11 * | |
12 * 1. Redistributions of source code must retain the above copyright | |
13 * notice, this list of conditions and the following disclaimer. | |
14 * | |
15 * 2. Redistributions in binary form must reproduce the above copyright | |
16 * notice, this list of conditions and the following disclaimer in | |
17 * the documentation and/or other materials provided with the | |
18 * distribution. | |
19 * | |
20 * 3. The end-user documentation included with the redistribution, | |
21 * if any, must include the following acknowledgment: | |
22 * "This product includes software developed by the | |
23 * Walt Disney Internet Group (http://opensource.go.com/)." | |
24 * Alternately, this acknowledgment may appear in the software itself, | |
25 * if and wherever such third-party acknowledgments normally appear. | |
26 * | |
27 * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must | |
28 * not be used to endorse or promote products derived from this | |
29 * software without prior written permission. For written | |
30 * permission, please contact opensource@dig.com. | |
31 * | |
32 * 5. Products derived from this software may not be called "Tea", | |
33 * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", | |
34 * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior | |
35 * written permission of the Walt Disney Internet Group. | |
36 * | |
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED | |
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
40 * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS | |
41 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
42 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
44 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
45 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
48 * ==================================================================== | |
49 * | |
50 * For more information about Tea, please see http://opensource.go.com/. | |
51 */ | |
52 | |
53 package com.go.trove.log; | |
54 | |
55 import java.io.*; | |
56 import java.util.*; | |
57 import java.text.*; | |
58 | |
59 /****************************************************************************** | |
60 * Opens up files to be used by an {@link IntervalLogStream}. | |
61 * | |
62 * @author Brian S O'Neill | |
63 * @version | |
64 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 9/07/00 <!-- $--> | |
65 */ | |
66 public class FileLogStreamFactory implements IntervalLogStream.Factory { | |
67 private File mDirectory; | |
68 private DateFormat mDateFormat; | |
69 private String mExtension; | |
70 | |
71 /** | |
72 * Creates log files in the given directory. The names are created by | |
73 * appending the name of the directory, a hyphen, a time stamp and | |
74 * an extension. | |
75 * | |
76 * For example, if the directory is "/logs/MyApp", the format is | |
77 * "yyyyMMdd", and the extension is ".log", then a generated file might be: | |
78 * "/logs/MyApp/MyApp-19990608.log". | |
79 * | |
80 * @param directory Directory to create log files in. | |
81 * @param format DateFormat to use for creating new file names. | |
82 * @param extension Extension to put at the end of new file name. | |
83 */ | |
84 public FileLogStreamFactory(File directory, | |
85 DateFormat format, | |
86 String extension) { | |
87 | |
88 if (directory == null) { | |
89 throw new NullPointerException | |
90 ("FileLogStreamFactory directory not specified"); | |
91 } | |
92 | |
93 try { | |
94 mDirectory = new File(directory.getCanonicalPath()); | |
95 } | |
96 catch (IOException e) { | |
97 mDirectory = directory; | |
98 } | |
99 | |
100 if (format == null) { | |
101 throw new NullPointerException | |
102 ("FileLogStreamFactory date format not specified"); | |
103 } | |
104 | |
105 mDateFormat = format; | |
106 | |
107 if (extension == null) { | |
108 mExtension = ""; | |
109 } | |
110 else { | |
111 mExtension = extension; | |
112 } | |
113 } | |
114 | |
115 public OutputStream openOutputStream(Date date) throws IOException { | |
116 if (!mDirectory.exists()) { | |
117 if (!mDirectory.mkdirs()) { | |
118 throw new IOException("Unable to create directory: \"" + | |
119 mDirectory + '"'); | |
120 } | |
121 } | |
122 | |
123 String fileName = mDirectory.getName() + '-'; | |
124 synchronized (mDateFormat) { | |
125 fileName += mDateFormat.format(date); | |
126 } | |
127 | |
128 File file = new File(mDirectory, fileName + mExtension); | |
129 return new FileOutputStream(file.getPath(), true); | |
130 } | |
131 } | |
132 |