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501f6777 CB |
1 | /* |
2 | * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | package org.lttng.ust.agent.jul; | |
19 | ||
20 | import java.lang.String; | |
21 | ||
267f7092 | 22 | import java.util.logging.Formatter; |
501f6777 CB |
23 | import java.util.logging.Handler; |
24 | import java.util.logging.LogRecord; | |
25 | ||
26 | class LTTngLogHandler extends Handler { | |
08284556 | 27 | |
267f7092 AM |
28 | /** |
29 | * Dummy Formatter object, so we can use its | |
30 | * {@link Formatter#formatMessage(LogRecord)} method. | |
31 | */ | |
32 | private static final Formatter FORMATTER = new Formatter() { | |
33 | @Override | |
34 | public String format(LogRecord record) { | |
35 | throw new UnsupportedOperationException(); | |
36 | } | |
37 | }; | |
38 | ||
08284556 | 39 | private final Boolean isRoot; |
501f6777 CB |
40 | |
41 | public LTTngLogHandler(Boolean isRoot) { | |
42 | super(); | |
08284556 | 43 | this.isRoot = isRoot; |
501f6777 CB |
44 | /* Initialize LTTng UST tracer. */ |
45 | try { | |
46 | System.loadLibrary("lttng-ust-jul-jni"); //$NON-NLS-1$ | |
47 | } catch (SecurityException e) { | |
48 | e.printStackTrace(); | |
49 | } catch (UnsatisfiedLinkError e) { | |
50 | e.printStackTrace(); | |
51 | } catch (NullPointerException e) { | |
52 | /* Should never happen */ | |
53 | e.printStackTrace(); | |
54 | } | |
55 | } | |
56 | ||
57 | public Boolean isRoot() { | |
08284556 | 58 | return this.isRoot; |
501f6777 CB |
59 | } |
60 | ||
61 | @Override | |
62 | public void close() throws SecurityException {} | |
63 | ||
64 | @Override | |
65 | public void flush() {} | |
66 | ||
67 | @Override | |
68 | public void publish(LogRecord record) { | |
267f7092 AM |
69 | String formattedMessage = FORMATTER.formatMessage(record); |
70 | ||
501f6777 | 71 | /* |
08284556 | 72 | * Specific tracepoint designed for JUL events. The source class of the |
501f6777 CB |
73 | * caller is used for the event name, the raw message is taken, the |
74 | * loglevel of the record and the thread ID. | |
75 | */ | |
08284556 | 76 | if (this.isRoot) { |
267f7092 | 77 | tracepointS(formattedMessage, |
501f6777 CB |
78 | record.getLoggerName(), record.getSourceClassName(), |
79 | record.getSourceMethodName(), record.getMillis(), | |
80 | record.getLevel().intValue(), record.getThreadID()); | |
81 | } else { | |
267f7092 | 82 | tracepointU(formattedMessage, |
501f6777 CB |
83 | record.getLoggerName(), record.getSourceClassName(), |
84 | record.getSourceMethodName(), record.getMillis(), | |
85 | record.getLevel().intValue(), record.getThreadID()); | |
86 | } | |
87 | } | |
88 | ||
89 | /* Use for a user session daemon. */ | |
08284556 AM |
90 | private native void tracepointU(String msg, |
91 | String logger_name, | |
92 | String class_name, | |
93 | String method_name, | |
94 | long millis, | |
95 | int log_level, | |
96 | int thread_id); | |
501f6777 CB |
97 | |
98 | /* Use for a root session daemon. */ | |
08284556 AM |
99 | private native void tracepointS(String msg, |
100 | String logger_name, | |
101 | String class_name, | |
102 | String method_name, | |
103 | long millis, | |
104 | int log_level, | |
105 | int thread_id); | |
501f6777 | 106 | } |