Mercurial > hg > blitz_stable

comparison src/com/go/trove/log/FileLogStreamFactory.java @ 0:3dc0c5604566

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:3dc0c5604566
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