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43e5396b DG |
1 | /* |
2 | * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * | |
5 | * This library is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
7 | * as published by the Free Software Foundation. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public License | |
15 | * along with this library; if not, write to the Free Software Foundation, | |
16 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
19 | package org.lttng.ust.jul; | |
20 | ||
21 | import java.nio.ByteBuffer; | |
22 | import java.nio.ByteOrder; | |
23 | import java.util.logging.Logger; | |
24 | import java.util.ArrayList; | |
529e6def | 25 | import java.util.HashMap; |
43e5396b DG |
26 | import java.util.List; |
27 | import java.util.Enumeration; | |
28 | ||
29 | public interface LTTngSessiondCmd2_4 { | |
30 | /** | |
31 | * Maximum name length for a logger name to be send to sessiond. | |
32 | */ | |
33 | final static int NAME_MAX = 255; | |
34 | ||
35 | public interface SessiondResponse { | |
36 | /** | |
37 | * Gets a byte array of the command so that it may be streamed | |
38 | * | |
39 | * @return the byte array of the command | |
40 | */ | |
41 | public byte[] getBytes(); | |
42 | } | |
43 | ||
44 | public interface SessiondCommand { | |
45 | /** | |
46 | * Populate the class from a byte array | |
47 | * | |
48 | * @param data | |
49 | * the byte array containing the streamed command | |
50 | */ | |
51 | public void populate(byte[] data); | |
52 | } | |
53 | ||
54 | public enum lttng_jul_command { | |
55 | /** List logger(s). */ | |
56 | CMD_LIST(1), | |
57 | /** Enable logger by name. */ | |
58 | CMD_ENABLE(2), | |
59 | /** Disable logger by name. */ | |
60 | CMD_DISABLE(3); | |
61 | private int code; | |
62 | ||
63 | private lttng_jul_command(int c) { | |
64 | code = c; | |
65 | } | |
66 | ||
67 | public int getCommand() { | |
68 | return code; | |
69 | } | |
70 | } | |
71 | ||
72 | enum lttng_jul_ret_code { | |
73 | CODE_SUCCESS_CMD(1), | |
74 | CODE_INVALID_CMD(2), | |
75 | CODE_UNK_LOGGER_NAME(3); | |
76 | private int code; | |
77 | ||
78 | private lttng_jul_ret_code(int c) { | |
79 | code = c; | |
80 | } | |
81 | ||
82 | public int getCode() { | |
83 | return code; | |
84 | } | |
85 | } | |
86 | ||
87 | public class sessiond_hdr implements SessiondCommand { | |
88 | /** ABI size of command header. */ | |
89 | public final static int SIZE = 16; | |
90 | /** Payload size in bytes following this header. */ | |
91 | public long data_size; | |
92 | /** Command type. */ | |
93 | public lttng_jul_command cmd; | |
94 | /** Command version. */ | |
95 | public int cmd_version; | |
96 | ||
97 | public void populate(byte[] data) { | |
98 | ByteBuffer buf = ByteBuffer.wrap(data); | |
99 | buf.order(ByteOrder.BIG_ENDIAN); | |
100 | ||
101 | data_size = buf.getLong(); | |
102 | cmd = lttng_jul_command.values()[buf.getInt() - 1]; | |
103 | cmd_version = buf.getInt(); | |
104 | } | |
105 | } | |
106 | ||
107 | public class sessiond_enable_handler implements SessiondResponse, SessiondCommand { | |
108 | private final static int SIZE = 4; | |
109 | public String name; | |
110 | ||
111 | /** Return status code to the session daemon. */ | |
112 | public lttng_jul_ret_code code; | |
113 | ||
114 | @Override | |
115 | public void populate(byte[] data) { | |
116 | ByteBuffer buf = ByteBuffer.wrap(data); | |
117 | buf.order(ByteOrder.LITTLE_ENDIAN); | |
118 | name = new String(data, 0, data.length); | |
119 | } | |
120 | ||
121 | @Override | |
122 | public byte[] getBytes() { | |
123 | byte data[] = new byte[SIZE]; | |
124 | ByteBuffer buf = ByteBuffer.wrap(data); | |
125 | buf.order(ByteOrder.BIG_ENDIAN); | |
126 | buf.putInt(code.getCode()); | |
127 | return data; | |
128 | } | |
129 | ||
130 | /** | |
131 | * Execute enable handler action which is to enable the given handler | |
132 | * to the received name. | |
133 | * | |
134 | * @return Event name as a string if the event is NOT found thus was | |
135 | * not enabled. | |
136 | */ | |
529e6def | 137 | public String execute(LTTngLogHandler handler, HashMap enabledLoggers) { |
43e5396b DG |
138 | Logger logger; |
139 | ||
140 | if (name == null) { | |
141 | this.code = lttng_jul_ret_code.CODE_INVALID_CMD; | |
142 | return null; | |
143 | } | |
144 | ||
145 | /* Wild card to enable ALL logger. */ | |
146 | if (name.trim().equals("*")) { | |
147 | String loggerName; | |
148 | Enumeration loggers = handler.logManager.getLoggerNames(); | |
149 | while (loggers.hasMoreElements()) { | |
150 | loggerName = loggers.nextElement().toString(); | |
151 | /* Somehow there is always an empty string at the end. */ | |
152 | if (loggerName == "") { | |
153 | continue; | |
154 | } | |
155 | ||
529e6def DG |
156 | if (enabledLoggers.get(loggerName) != null) { |
157 | continue; | |
158 | } | |
159 | ||
43e5396b DG |
160 | logger = handler.logManager.getLogger(loggerName); |
161 | logger.addHandler(handler); | |
529e6def | 162 | enabledLoggers.put(loggerName, logger); |
43e5396b DG |
163 | } |
164 | this.code = lttng_jul_ret_code.CODE_SUCCESS_CMD; | |
529e6def DG |
165 | /* |
166 | * Return the name as a new string so we can add the * event | |
167 | * name to the event list that we need to enable for new | |
168 | * Logger. | |
169 | */ | |
170 | return new String(name); | |
43e5396b DG |
171 | } |
172 | ||
173 | this.code = lttng_jul_ret_code.CODE_SUCCESS_CMD; | |
174 | logger = handler.logManager.getLogger(name.trim()); | |
175 | if (logger != null) { | |
176 | logger.addHandler(handler); | |
529e6def | 177 | enabledLoggers.put(name.trim(), logger); |
43e5396b DG |
178 | return null; |
179 | } else { | |
180 | return new String(name); | |
181 | } | |
182 | } | |
183 | } | |
184 | ||
185 | public class sessiond_disable_handler implements SessiondResponse, SessiondCommand { | |
186 | private final static int SIZE = 4; | |
187 | public String name; | |
188 | ||
189 | /** Return status code to the session daemon. */ | |
190 | public lttng_jul_ret_code code; | |
191 | ||
192 | @Override | |
193 | public void populate(byte[] data) { | |
194 | ByteBuffer buf = ByteBuffer.wrap(data); | |
195 | buf.order(ByteOrder.BIG_ENDIAN); | |
196 | name = new String(data, 0, data.length); | |
197 | } | |
198 | ||
199 | @Override | |
200 | public byte[] getBytes() { | |
201 | byte data[] = new byte[SIZE]; | |
202 | ByteBuffer buf = ByteBuffer.wrap(data); | |
203 | buf.order(ByteOrder.BIG_ENDIAN); | |
204 | buf.putInt(code.getCode()); | |
205 | return data; | |
206 | } | |
207 | ||
208 | /** | |
209 | * Execute disable handler action which is to disable the given handler | |
210 | * to the received name. | |
211 | */ | |
212 | public void execute(LTTngLogHandler handler) { | |
213 | Logger logger; | |
214 | ||
215 | if (name == null) { | |
216 | this.code = lttng_jul_ret_code.CODE_INVALID_CMD; | |
217 | return; | |
218 | } | |
219 | ||
220 | /* Wild card to disable ALL logger. */ | |
221 | if (name.trim().equals("*")) { | |
222 | String loggerName; | |
223 | Enumeration loggers = handler.logManager.getLoggerNames(); | |
224 | while (loggers.hasMoreElements()) { | |
225 | loggerName = loggers.nextElement().toString(); | |
226 | /* Somehow there is always an empty string at the end. */ | |
227 | if (loggerName == "") { | |
228 | continue; | |
229 | } | |
230 | ||
231 | logger = handler.logManager.getLogger(loggerName); | |
232 | logger.removeHandler(handler); | |
233 | } | |
234 | this.code = lttng_jul_ret_code.CODE_SUCCESS_CMD; | |
235 | return; | |
236 | } | |
237 | ||
238 | logger = handler.logManager.getLogger(name.trim()); | |
239 | if (logger == null) { | |
240 | this.code = lttng_jul_ret_code.CODE_UNK_LOGGER_NAME; | |
241 | } else { | |
242 | logger.removeHandler(handler); | |
243 | this.code = lttng_jul_ret_code.CODE_SUCCESS_CMD; | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
248 | public class sessiond_list_logger implements SessiondResponse { | |
249 | private final static int SIZE = 12; | |
250 | ||
251 | private int data_size = 0; | |
252 | private int nb_logger = 0; | |
253 | ||
254 | List<String> logger_list = new ArrayList<String>(); | |
255 | ||
256 | /** Return status code to the session daemon. */ | |
257 | public lttng_jul_ret_code code; | |
258 | ||
259 | @Override | |
260 | public byte[] getBytes() { | |
261 | byte data[] = new byte[SIZE + data_size]; | |
262 | ByteBuffer buf = ByteBuffer.wrap(data); | |
263 | buf.order(ByteOrder.BIG_ENDIAN); | |
264 | ||
265 | /* Returned code */ | |
266 | buf.putInt(code.getCode()); | |
267 | buf.putInt(data_size); | |
268 | buf.putInt(nb_logger); | |
269 | ||
270 | for (String logger: logger_list) { | |
271 | buf.put(logger.getBytes()); | |
272 | /* NULL terminated byte after the logger name. */ | |
273 | buf.put((byte) 0x0); | |
274 | } | |
275 | return data; | |
276 | } | |
277 | ||
278 | /** | |
279 | * Execute enable handler action which is to enable the given handler | |
280 | * to the received name. | |
281 | */ | |
282 | public void execute(LTTngLogHandler handler) { | |
283 | String loggerName; | |
284 | ||
285 | Enumeration loggers = handler.logManager.getLoggerNames(); | |
286 | while (loggers.hasMoreElements()) { | |
287 | loggerName = loggers.nextElement().toString(); | |
288 | /* Somehow there is always an empty string at the end. */ | |
289 | if (loggerName == "") { | |
290 | continue; | |
291 | } | |
292 | ||
293 | this.logger_list.add(loggerName); | |
294 | this.nb_logger++; | |
295 | this.data_size += loggerName.length() + 1; | |
296 | } | |
297 | ||
298 | this.code = lttng_jul_ret_code.CODE_SUCCESS_CMD; | |
299 | } | |
300 | } | |
301 | } |