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1
2
12 package com.versant.core.logging;
13
14 import com.versant.core.common.BindingSupportImpl;
15
16
20 public final class LogEventStore {
21
22 private int size = 1000;
23 private LogEvent[] buf = new LogEvent[size];
24 private int pos; private int count;
26 private int eventsLogged;
27
28 public static final String  LOG_EVENTS_NONE = "none";
29 public static final String LOG_EVENTS_ERRORS = "errors";
30 public static final String LOG_EVENTS_NORMAL = "normal";
31 public static final String LOG_EVENTS_VERBOSE = "verbose";
32 public static final String LOG_EVENTS_ALL = "all";
33
34 private String logEvents;
35
36 private boolean severe;
37 private boolean warning;
38 private boolean info;
39 private boolean config;
40 private boolean fine;
41 private boolean finer;
42 private boolean finest;
43
44 private boolean logEventsToSysOut = true;
45
46 public LogEventStore() {
47 setLogEvents(LOG_EVENTS_NORMAL);
48 }
49
50 public synchronized void log(LogEvent ev) {
51 synchronized (this) {
52 buf[pos] = ev;
53 pos = (pos + 1) % size;
54 if (count < size) count++;
55 }
56 eventsLogged++;
57 if (logEventsToSysOut) System.out.println(ev);
58 }
59
60 public int getMaxEvents() {
61 return size;
62 }
63
64
67 public int getEventsLogged() {
68 return eventsLogged;
69 }
70
71
74 public synchronized void setMaxEvents(int max) {
75 LogEvent[] old = copyEvents(0);
76 buf = new LogEvent[size = max];
77 if (old != null) {
78 int n = old.length;
79 if (n > max) n = max;
80 System.arraycopy(old, old.length - n, buf, 0, n);
81 count = n;
82 pos = n % size;
83 } else {
84 count = 0;
85 pos = 0;
86 }
87 }
88
89 public synchronized LogEvent[] copyEvents(int id) {
90 if (count < size) {
91 int first;
92 for (first = pos - 1; first >= 0; first--) {
93 if (buf[first].getId() == id) break;
94 }
95 first++;
96 int n = pos - first;
97 if (n == 0) return null;
98 LogEvent[] ans = new LogEvent[n];
99 System.arraycopy(buf, first, ans, 0, n);
100 return ans;
101 } else {
102 if (buf[(pos + size - 1) % size].getId() == id) return null;
103 int first = pos;
104 int c = size;
105 for (; c > 0; first = (first + 1) % size, c--) {
106 if (buf[first].getId() == id) break;
107 }
108 first = (first + 1) % size;
109 if (first >= pos) {
110 int h1 = size - first;
111 int h2 = pos;
112 LogEvent[] ans = new LogEvent[h1 + h2];
113 System.arraycopy(buf, first, ans, 0, h1);
114 System.arraycopy(buf, 0, ans, h1, h2);
115 return ans;
116 } else {
117 int n = pos - first;
118 LogEvent[] ans = new LogEvent[n];
119 System.arraycopy(buf, first, ans, 0, n);
120 return ans;
121 }
122 }
123 }
124
125 public boolean isSevere() {
126 return severe;
127 }
128
129 public boolean isWarning() {
130 return warning;
131 }
132
133 public boolean isInfo() {
134 return info;
135 }
136
137 public boolean isConfig() {
138 return config;
139 }
140
141 public boolean isFine() {
142 return fine;
143 }
144
145 public boolean isFiner() {
146 return finer;
147 }
148
149 public boolean isFinest() {
150 return finest;
151 }
152
153
157 public Object getStatusBean() {
158 return null;
159 }
160
161 public String getLogEvents() {
162 return logEvents;
163 }
164
165 public void setLogEvents(String logEvents) {
166 if (logEvents.equals(LOG_EVENTS_NONE)) {
167 severe = false;
168 warning = false;
169 info = false;
170 config = false;
171 fine = false;
172 finer = false;
173 finest = false;
174 } else if (logEvents.equals(LOG_EVENTS_ERRORS)) {
175 severe = true;
176 warning = false;
177 info = false;
178 config = false;
179 fine = false;
180 finer = false;
181 finest = false;
182 } else if (logEvents.equals(LOG_EVENTS_NORMAL)) {
183 severe = true;
184 warning = true;
185 info = true;
186 config = false;
187 fine = false;
188 finer = false;
189 finest = false;
190 } else if (logEvents.equals(LOG_EVENTS_VERBOSE)) {
191 severe = true;
192 warning = true;
193 info = true;
194 config = true;
195 fine = true;
196 finer = false;
197 finest = false;
198 } else if (logEvents.equals(LOG_EVENTS_ALL)) {
199 severe = true;
200 warning = true;
201 info = true;
202 config = true;
203 fine = true;
204 finer = true;
205 finest = true;
206 } else {
207 throw BindingSupportImpl.getInstance().illegalArgument(
208 "Invalid group: '" + logEvents + "'");
209 }
210 this.logEvents = logEvents;
211 }
212
213 public boolean isLogEventsToSysOut() {
214 return logEventsToSysOut;
215 }
216
217 public void setLogEventsToSysOut(boolean logEventsToSysOut) {
218 this.logEventsToSysOut = logEventsToSysOut;
219 }
220
221 }
222 |
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