Mercurial > hg > blitz_condensed
comparison src/com/go/trove/log/LogEvent.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 /* ==================================================================== | |
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.lang.ref.WeakReference; | |
58 | |
59 /****************************************************************************** | |
60 * LogEvent captures information that should be logged. LogEvents are one | |
61 * of four types: debug, info, warn or error. All LogEvents have a | |
62 * timestamp for when the event occurred and a reference to the thread | |
63 * that created it. Most have an embedded message, and some have an | |
64 * embedded exception. | |
65 * | |
66 * @author Brian S O'Neill | |
67 * @version | |
68 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 9/07/00 <!-- $--> | |
69 */ | |
70 public class LogEvent extends EventObject { | |
71 /** Debug type of LogEvent */ | |
72 public static final int DEBUG_TYPE = 1; | |
73 | |
74 /** Info type of LogEvent */ | |
75 public static final int INFO_TYPE = 2; | |
76 | |
77 /** Warn type of LogEvent */ | |
78 public static final int WARN_TYPE = 3; | |
79 | |
80 /** Error type of LogEvent */ | |
81 public static final int ERROR_TYPE = 4; | |
82 | |
83 private int mType; | |
84 private Date mTimestamp; | |
85 private String mMessage; | |
86 private Throwable mThrowable; | |
87 private String mThreadName; | |
88 // WeakReference to a Thread. | |
89 private transient WeakReference mThread; | |
90 | |
91 public LogEvent(Log log, int type, | |
92 String message, Throwable throwable, | |
93 Thread thread, Date timestamp) { | |
94 super(log); | |
95 | |
96 if (type < DEBUG_TYPE || type > ERROR_TYPE) { | |
97 throw new IllegalArgumentException | |
98 ("Type out of range: " + type); | |
99 } | |
100 | |
101 mType = type; | |
102 | |
103 if (message == null) { | |
104 if (throwable != null) { | |
105 mMessage = throwable.getMessage(); | |
106 } | |
107 } | |
108 else { | |
109 mMessage = message; | |
110 } | |
111 | |
112 mThrowable = throwable; | |
113 | |
114 if (thread == null) { | |
115 mThread = new WeakReference(Thread.currentThread()); | |
116 } | |
117 else { | |
118 mThread = new WeakReference(thread); | |
119 } | |
120 | |
121 if (timestamp == null) { | |
122 mTimestamp = new Date(); | |
123 } | |
124 else { | |
125 mTimestamp = timestamp; | |
126 } | |
127 } | |
128 | |
129 public LogEvent(Log log, int type, | |
130 String message, Thread thread, Date timestamp) { | |
131 this(log, type, message, null, thread, timestamp); | |
132 } | |
133 | |
134 public LogEvent(Log log, int type, | |
135 Throwable throwable, Thread thread, Date timestamp) { | |
136 this(log, type, null, throwable, thread, timestamp); | |
137 } | |
138 | |
139 public LogEvent(Log log, int type, | |
140 String message, Thread thread) { | |
141 this(log, type, message, null, thread, null); | |
142 } | |
143 | |
144 public LogEvent(Log log, int type, | |
145 Throwable throwable, Thread thread) { | |
146 this(log, type, null, throwable, thread, null); | |
147 } | |
148 | |
149 public LogEvent(Log log, int type, | |
150 String message, Throwable throwable) { | |
151 this(log, type, message, throwable, null, null); | |
152 } | |
153 | |
154 public LogEvent(Log log, int type, String message) { | |
155 this(log, type, message, null, null, null); | |
156 } | |
157 | |
158 public LogEvent(Log log, int type, Throwable throwable) { | |
159 this(log, type, null, throwable, null, null); | |
160 } | |
161 | |
162 public Log getLogSource() { | |
163 return (Log)getSource(); | |
164 } | |
165 | |
166 /** | |
167 * Returns the type of this LogEvent, which matches one of the defined | |
168 * type constants. | |
169 */ | |
170 public int getType() { | |
171 return mType; | |
172 } | |
173 | |
174 /** | |
175 * Returns the date and time of this event. | |
176 */ | |
177 public Date getTimestamp() { | |
178 return mTimestamp; | |
179 } | |
180 | |
181 /** | |
182 * Message may be null. | |
183 */ | |
184 public String getMessage() { | |
185 return mMessage; | |
186 } | |
187 | |
188 /** | |
189 * Returns null if there is no exception logged. | |
190 */ | |
191 public Throwable getException() { | |
192 return mThrowable; | |
193 } | |
194 | |
195 /** | |
196 * Returns null if there is no exception logged. | |
197 */ | |
198 public String getExceptionStackTrace() { | |
199 Throwable t = getException(); | |
200 if (t == null) { | |
201 return null; | |
202 } | |
203 StringWriter sw = new StringWriter(); | |
204 PrintWriter pw = new PrintWriter(sw); | |
205 t.printStackTrace(pw); | |
206 return sw.toString(); | |
207 } | |
208 | |
209 /** | |
210 * Returns the name of the thread that created this event. | |
211 */ | |
212 public String getThreadName() { | |
213 if (mThreadName == null) { | |
214 Thread t = getThread(); | |
215 if (t != null) { | |
216 mThreadName = t.getName(); | |
217 } | |
218 } | |
219 return mThreadName; | |
220 } | |
221 | |
222 /** | |
223 * Returns the thread that created this event, which may be null if | |
224 * this LogEvent was deserialized or the thread has been reclaimed. | |
225 */ | |
226 public Thread getThread() { | |
227 return (Thread)mThread.get(); | |
228 } | |
229 | |
230 public String toString() { | |
231 String msg; | |
232 if (getMessage() == null) { | |
233 msg = "null"; | |
234 } | |
235 else { | |
236 msg = '"' + getMessage() + '"'; | |
237 } | |
238 | |
239 return | |
240 getClass().getName() + "[" + | |
241 getTimestamp() + ',' + | |
242 getThreadName() + ',' + | |
243 msg + | |
244 "] from " + getSource(); | |
245 } | |
246 | |
247 private void writeObject(ObjectOutputStream out) throws IOException { | |
248 getThreadName(); | |
249 out.defaultWriteObject(); | |
250 } | |
251 | |
252 private void readObject(ObjectInputStream in) | |
253 throws IOException, ClassNotFoundException { | |
254 in.defaultReadObject(); | |
255 } | |
256 } |