Commit | Line | Data |
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f3ed775e DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
f3ed775e DG |
7 | * |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
f3ed775e DG |
16 | */ |
17 | ||
18 | #define _GNU_SOURCE | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
a4b92340 | 20 | #include <assert.h> |
ecc48a90 | 21 | #include <ctype.h> |
f3ed775e DG |
22 | #include <popt.h> |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/types.h> | |
28 | #include <time.h> | |
29 | #include <unistd.h> | |
30 | ||
37d03ff7 JRJ |
31 | #include <common/mi-lttng.h> |
32 | ||
c399183f | 33 | #include "../command.h" |
679b4943 | 34 | #include "../utils.h" |
f3ed775e | 35 | |
00e2e675 | 36 | #include <common/defaults.h> |
42224349 | 37 | #include <common/sessiond-comm/sessiond-comm.h> |
00e2e675 | 38 | #include <common/uri.h> |
81b86775 | 39 | #include <common/utils.h> |
16f6f820 | 40 | #include <lttng/snapshot.h> |
42224349 | 41 | |
f3ed775e DG |
42 | static char *opt_output_path; |
43 | static char *opt_session_name; | |
a4b92340 DG |
44 | static char *opt_url; |
45 | static char *opt_ctrl_url; | |
46 | static char *opt_data_url; | |
47 | static int opt_no_consumer; | |
96fe6b8d | 48 | static int opt_no_output; |
16f6f820 | 49 | static int opt_snapshot; |
ecc48a90 | 50 | static unsigned int opt_live_timer; |
f3ed775e DG |
51 | |
52 | enum { | |
53 | OPT_HELP = 1, | |
679b4943 | 54 | OPT_LIST_OPTIONS, |
ecc48a90 | 55 | OPT_LIVE_TIMER, |
f3ed775e DG |
56 | }; |
57 | ||
37d03ff7 JRJ |
58 | static struct mi_writer *writer; |
59 | ||
f3ed775e DG |
60 | static struct poptOption long_options[] = { |
61 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
679b4943 SM |
62 | {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL}, |
63 | {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL}, | |
64 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
23d14dff DG |
65 | {"set-url", 'U', POPT_ARG_STRING, &opt_url, 0, 0, 0}, |
66 | {"ctrl-url", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0}, | |
67 | {"data-url", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0}, | |
96fe6b8d | 68 | {"no-output", 0, POPT_ARG_VAL, &opt_no_output, 1, 0, 0}, |
2bba9e53 | 69 | {"no-consumer", 0, POPT_ARG_VAL, &opt_no_consumer, 1, 0, 0}, |
16f6f820 | 70 | {"snapshot", 0, POPT_ARG_VAL, &opt_snapshot, 1, 0, 0}, |
d73c5802 | 71 | {"live", 0, POPT_ARG_INT | POPT_ARGFLAG_OPTIONAL, 0, OPT_LIVE_TIMER, 0, 0}, |
f3ed775e DG |
72 | {0, 0, 0, 0, 0, 0, 0} |
73 | }; | |
74 | ||
16de1a24 DG |
75 | /* |
76 | * Please have a look at src/lib/lttng-ctl/lttng-ctl.c for more information on | |
77 | * why this declaration exists and used ONLY in for this command. | |
78 | */ | |
07424f16 | 79 | extern int _lttng_create_session_ext(const char *name, const char *url, |
ecc48a90 | 80 | const char *datetime, int live_timer); |
07424f16 | 81 | |
f3ed775e DG |
82 | /* |
83 | * usage | |
84 | */ | |
85 | static void usage(FILE *ofp) | |
86 | { | |
a4b92340 | 87 | fprintf(ofp, "usage: lttng create [NAME] [OPTIONS] \n"); |
f3ed775e | 88 | fprintf(ofp, "\n"); |
a4b92340 DG |
89 | fprintf(ofp, "Without a given NAME, the default is 'auto-<yyyymmdd>-<hhmmss>'\n"); |
90 | fprintf(ofp, "\n"); | |
91 | fprintf(ofp, "Options:\n"); | |
f3ed775e | 92 | fprintf(ofp, " -h, --help Show this help\n"); |
1c8d13c8 | 93 | fprintf(ofp, " --list-options Simple listing of options\n"); |
58a97671 | 94 | fprintf(ofp, " -o, --output PATH Specify output path for traces\n"); |
96fe6b8d | 95 | fprintf(ofp, " --no-output Traces will not be outputted\n"); |
a2d6893b | 96 | fprintf(ofp, " --snapshot Set the session in snapshot mode.\n"); |
96fe6b8d | 97 | fprintf(ofp, " Created in no-output mode and uses the URL,\n"); |
16f6f820 DG |
98 | fprintf(ofp, " if one, as the default snapshot output.\n"); |
99 | fprintf(ofp, " Every channel will be set in overwrite mode\n"); | |
100 | fprintf(ofp, " and with mmap output (splice not supported).\n"); | |
d73c5802 | 101 | fprintf(ofp, " --live [USEC] Set the session in live-reading mode.\n"); |
ecc48a90 JD |
102 | fprintf(ofp, " The delay parameter in micro-seconds is the\n"); |
103 | fprintf(ofp, " maximum time the user can wait for the data\n"); | |
d73c5802 DG |
104 | fprintf(ofp, " to be flushed. Can be set with a network\n"); |
105 | fprintf(ofp, " URL (-U or -C/-D) and must have a relayd listening.\n"); | |
106 | fprintf(ofp, " By default, %u is used for the timer and the\n", | |
107 | DEFAULT_LTTNG_LIVE_TIMER); | |
108 | fprintf(ofp, " network URL is set to net://127.0.0.1.\n"); | |
a4b92340 DG |
109 | fprintf(ofp, "\n"); |
110 | fprintf(ofp, "Extended Options:\n"); | |
111 | fprintf(ofp, "\n"); | |
112 | fprintf(ofp, "Using these options, each API call can be controlled individually.\n"); | |
113 | fprintf(ofp, "\n"); | |
114 | fprintf(ofp, " -U, --set-url=URL Set URL destination of the trace data.\n"); | |
00e2e675 | 115 | fprintf(ofp, " It is persistent for the session lifetime.\n"); |
a4b92340 | 116 | fprintf(ofp, " This will set both data and control URL.\n"); |
a4b92340 DG |
117 | fprintf(ofp, " -C, --ctrl-url=URL Set control path URL. (Must use -D also)\n"); |
118 | fprintf(ofp, " -D, --data-url=URL Set data path URL. (Must use -C also)\n"); | |
a4b92340 DG |
119 | fprintf(ofp, "\n"); |
120 | fprintf(ofp, "Please refer to the man page (lttng(1)) for more information on network\n"); | |
121 | fprintf(ofp, "streaming mechanisms and explanation of the control and data port\n"); | |
122 | fprintf(ofp, "You must have a running remote lttng-relayd for network streaming\n"); | |
123 | fprintf(ofp, "\n"); | |
124 | fprintf(ofp, "URL format is has followed:\n"); | |
125 | fprintf(ofp, "\n"); | |
126 | fprintf(ofp, " proto://[HOST|IP][:PORT1[:PORT2]][/TRACE_PATH]\n"); | |
127 | fprintf(ofp, "\n"); | |
128 | fprintf(ofp, " Supported protocols are (proto):\n"); | |
129 | fprintf(ofp, " > file://...\n"); | |
130 | fprintf(ofp, " Local filesystem full path.\n"); | |
131 | fprintf(ofp, "\n"); | |
16de1a24 | 132 | fprintf(ofp, " > net[6]://...\n"); |
a4b92340 DG |
133 | fprintf(ofp, " This will use the default network transport layer which is\n"); |
134 | fprintf(ofp, " TCP for both control (PORT1) and data port (PORT2).\n"); | |
135 | fprintf(ofp, " The default ports are respectively 5342 and 5343.\n"); | |
136 | fprintf(ofp, "\n"); | |
0ab61906 | 137 | fprintf(ofp, " > tcp[6]://...\n"); |
a4b92340 DG |
138 | fprintf(ofp, " Can only be used with -C and -D together\n"); |
139 | fprintf(ofp, "\n"); | |
140 | fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n"); | |
141 | fprintf(ofp, "\n"); | |
142 | fprintf(ofp, "Examples:\n"); | |
143 | fprintf(ofp, " # lttng create -U net://192.168.1.42\n"); | |
144 | fprintf(ofp, " Uses TCP and default ports for the given destination.\n"); | |
145 | fprintf(ofp, " # lttng create -U net6://[fe80::f66d:4ff:fe53:d220]\n"); | |
146 | fprintf(ofp, " Uses TCP, default ports and IPv6.\n"); | |
147 | fprintf(ofp, " # lttng create s1 -U net://myhost.com:3229\n"); | |
148 | fprintf(ofp, " Set the consumer to the remote HOST on port 3229 for control.\n"); | |
f3ed775e DG |
149 | fprintf(ofp, "\n"); |
150 | } | |
151 | ||
37d03ff7 | 152 | /* |
485ca16f | 153 | * Retrieve the created session and mi output it based on provided argument |
37d03ff7 JRJ |
154 | * This is currently a summary of what was pretty printed and is subject to |
155 | * enhancements. | |
37d03ff7 JRJ |
156 | */ |
157 | static int mi_created_session(const char *session_name) | |
158 | { | |
159 | int ret, i, count, found; | |
160 | struct lttng_session *sessions; | |
161 | ||
162 | /* session_name should not be null */ | |
163 | assert(session_name); | |
164 | assert(writer); | |
165 | ||
166 | count = lttng_list_sessions(&sessions); | |
167 | if (count < 0) { | |
168 | ret = count; | |
169 | ERR("%s", lttng_strerror(ret)); | |
170 | goto error; | |
171 | } | |
172 | ||
173 | if (count == 0) { | |
174 | ERR("Error session creation failed: session %s not found", session_name); | |
175 | ret = -LTTNG_ERR_SESS_NOT_FOUND; | |
176 | goto end; | |
177 | } | |
178 | ||
179 | found = 0; | |
180 | for (i = 0; i < count; i++) { | |
181 | if (strncmp(sessions[i].name, session_name, NAME_MAX) == 0) { | |
182 | found = 1; | |
183 | ret = mi_lttng_session(writer, &sessions[i], 0); | |
184 | if (ret) { | |
185 | goto error; | |
186 | } | |
187 | break; | |
188 | } | |
189 | } | |
190 | ||
191 | if (!found) { | |
192 | ret = -LTTNG_ERR_SESS_NOT_FOUND; | |
193 | } else { | |
194 | ret = CMD_SUCCESS; | |
195 | } | |
196 | ||
197 | error: | |
198 | free(sessions); | |
199 | end: | |
200 | return ret; | |
201 | } | |
202 | ||
00e2e675 | 203 | /* |
a4b92340 | 204 | * For a session name, set the consumer URLs. |
00e2e675 | 205 | */ |
a4b92340 DG |
206 | static int set_consumer_url(const char *session_name, const char *ctrl_url, |
207 | const char *data_url) | |
00e2e675 | 208 | { |
a4b92340 DG |
209 | int ret; |
210 | struct lttng_handle *handle; | |
211 | struct lttng_domain dom; | |
212 | ||
213 | assert(session_name); | |
214 | ||
215 | /* | |
216 | * Set handle with the session name and the domain set to 0. This means to | |
217 | * the session daemon that the next action applies on the tracing session | |
218 | * rather then the domain specific session. | |
219 | */ | |
220 | memset(&dom, 0, sizeof(dom)); | |
221 | ||
222 | handle = lttng_create_handle(session_name, &dom); | |
223 | if (handle == NULL) { | |
224 | ret = CMD_FATAL; | |
225 | goto error; | |
226 | } | |
00e2e675 | 227 | |
a4b92340 DG |
228 | ret = lttng_set_consumer_url(handle, ctrl_url, data_url); |
229 | if (ret < 0) { | |
230 | goto error; | |
00e2e675 DG |
231 | } |
232 | ||
a4b92340 DG |
233 | if (ctrl_url) { |
234 | MSG("Control URL %s set for session %s", ctrl_url, session_name); | |
00e2e675 DG |
235 | } |
236 | ||
a4b92340 DG |
237 | if (data_url) { |
238 | MSG("Data URL %s set for session %s", data_url, session_name); | |
239 | } | |
240 | ||
241 | error: | |
242 | lttng_destroy_handle(handle); | |
243 | return ret; | |
244 | } | |
245 | ||
16f6f820 DG |
246 | static int add_snapshot_output(const char *session_name, const char *ctrl_url, |
247 | const char *data_url) | |
248 | { | |
249 | int ret; | |
250 | struct lttng_snapshot_output *output = NULL; | |
251 | ||
252 | assert(session_name); | |
253 | ||
254 | output = lttng_snapshot_output_create(); | |
255 | if (!output) { | |
256 | ret = CMD_FATAL; | |
257 | goto error_create; | |
258 | } | |
259 | ||
260 | if (ctrl_url) { | |
261 | ret = lttng_snapshot_output_set_ctrl_url(ctrl_url, output); | |
262 | if (ret < 0) { | |
263 | goto error; | |
264 | } | |
265 | } | |
266 | ||
267 | if (data_url) { | |
268 | ret = lttng_snapshot_output_set_data_url(data_url, output); | |
269 | if (ret < 0) { | |
270 | goto error; | |
271 | } | |
272 | } | |
273 | ||
274 | /* This call, if successful, populates the id of the output object. */ | |
275 | ret = lttng_snapshot_add_output(session_name, output); | |
276 | if (ret < 0) { | |
277 | goto error; | |
278 | } | |
279 | ||
280 | error: | |
281 | lttng_snapshot_output_destroy(output); | |
282 | error_create: | |
283 | return ret; | |
284 | } | |
285 | ||
f3ed775e | 286 | /* |
1c8d13c8 TD |
287 | * Create a tracing session. |
288 | * If no name is specified, a default name is generated. | |
f3ed775e | 289 | * |
1c8d13c8 | 290 | * Returns one of the CMD_* result constants. |
f3ed775e | 291 | */ |
a4b92340 | 292 | static int create_session(void) |
f3ed775e | 293 | { |
a4b92340 | 294 | int ret; |
07424f16 | 295 | char *session_name = NULL, *traces_path = NULL, *alloc_path = NULL; |
a4b92340 | 296 | char *alloc_url = NULL, *url = NULL, datetime[16]; |
487b253b | 297 | char session_name_date[NAME_MAX + 17], *print_str_url = NULL; |
f3ed775e DG |
298 | time_t rawtime; |
299 | struct tm *timeinfo; | |
300 | ||
d6175221 DG |
301 | /* Get date and time for automatic session name/path */ |
302 | time(&rawtime); | |
303 | timeinfo = localtime(&rawtime); | |
304 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
305 | ||
f3ed775e DG |
306 | /* Auto session name creation */ |
307 | if (opt_session_name == NULL) { | |
07424f16 DG |
308 | ret = snprintf(session_name_date, sizeof(session_name_date), |
309 | DEFAULT_SESSION_NAME "-%s", datetime); | |
d6175221 | 310 | if (ret < 0) { |
07424f16 DG |
311 | PERROR("snprintf session name"); |
312 | goto error; | |
313 | } | |
04965770 | 314 | session_name = session_name_date; |
07424f16 | 315 | DBG("Auto session name set to %s", session_name_date); |
f3ed775e | 316 | } else { |
487b253b DG |
317 | if (strlen(opt_session_name) > NAME_MAX) { |
318 | ERR("Session name too long. Length must be lower or equal to %d", | |
319 | NAME_MAX); | |
320 | ret = LTTNG_ERR_SESSION_FAIL; | |
321 | goto error; | |
322 | } | |
4b861950 DG |
323 | /* |
324 | * Check if the session name begins with "auto-" or is exactly "auto". | |
325 | * Both are reserved for the default session name. See bug #449 to | |
326 | * understand why we need to check both here. | |
327 | */ | |
328 | if ((strncmp(opt_session_name, DEFAULT_SESSION_NAME "-", | |
329 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) || | |
330 | (strncmp(opt_session_name, DEFAULT_SESSION_NAME, | |
61b35a5a | 331 | strlen(DEFAULT_SESSION_NAME)) == 0 && |
4b861950 | 332 | strlen(opt_session_name) == strlen(DEFAULT_SESSION_NAME))) { |
61b35a5a DG |
333 | ERR("%s is a reserved keyword for default session(s)", |
334 | DEFAULT_SESSION_NAME); | |
335 | ret = CMD_ERROR; | |
336 | goto error; | |
337 | } | |
f3ed775e | 338 | session_name = opt_session_name; |
07424f16 DG |
339 | ret = snprintf(session_name_date, sizeof(session_name_date), |
340 | "%s-%s", session_name, datetime); | |
341 | if (ret < 0) { | |
342 | PERROR("snprintf session name"); | |
343 | goto error; | |
344 | } | |
f3ed775e DG |
345 | } |
346 | ||
1a241656 DG |
347 | if ((!opt_ctrl_url && opt_data_url) || (opt_ctrl_url && !opt_data_url)) { |
348 | ERR("You need both control and data URL."); | |
349 | ret = CMD_ERROR; | |
350 | goto error; | |
351 | } | |
352 | ||
785d2d0d | 353 | if (opt_output_path != NULL) { |
81b86775 | 354 | traces_path = utils_expand_path(opt_output_path); |
00e2e675 DG |
355 | if (traces_path == NULL) { |
356 | ret = CMD_ERROR; | |
357 | goto error; | |
358 | } | |
359 | ||
37d03ff7 | 360 | /* Create URL string from the local file system path */ |
a4b92340 | 361 | ret = asprintf(&alloc_url, "file://%s", traces_path); |
00e2e675 | 362 | if (ret < 0) { |
a4b92340 | 363 | PERROR("asprintf url path"); |
00e2e675 DG |
364 | ret = CMD_FATAL; |
365 | goto error; | |
366 | } | |
a4b92340 DG |
367 | /* URL to use in the lttng_create_session() call */ |
368 | url = alloc_url; | |
40b03f52 | 369 | print_str_url = traces_path; |
a4b92340 DG |
370 | } else if (opt_url) { /* Handling URL (-U opt) */ |
371 | url = opt_url; | |
40b03f52 | 372 | print_str_url = url; |
1a241656 DG |
373 | } else if (opt_data_url && opt_ctrl_url) { |
374 | /* | |
375 | * With both control and data, we'll be setting the consumer URL after | |
376 | * session creation thus use no URL. | |
377 | */ | |
378 | url = NULL; | |
2bba9e53 | 379 | } else if (!opt_no_output) { |
00e2e675 | 380 | /* Auto output path */ |
feb0f3e5 | 381 | alloc_path = utils_get_home_dir(); |
f3ed775e | 382 | if (alloc_path == NULL) { |
d386b234 | 383 | ERR("HOME path not found.\n \ |
00e2e675 | 384 | Please specify an output path using -o, --output PATH"); |
f3ed775e DG |
385 | ret = CMD_FATAL; |
386 | goto error; | |
387 | } | |
d386b234 | 388 | alloc_path = strdup(alloc_path); |
f3ed775e | 389 | |
07424f16 DG |
390 | ret = asprintf(&alloc_url, |
391 | "file://%s/" DEFAULT_TRACE_DIR_NAME "/%s", | |
392 | alloc_path, session_name_date); | |
58a97671 | 393 | if (ret < 0) { |
00e2e675 DG |
394 | PERROR("asprintf trace dir name"); |
395 | ret = CMD_FATAL; | |
58a97671 DG |
396 | goto error; |
397 | } | |
00e2e675 | 398 | |
a4b92340 | 399 | url = alloc_url; |
1a241656 | 400 | print_str_url = alloc_url + strlen("file://"); |
2bba9e53 | 401 | } else { |
96fe6b8d | 402 | /* No output means --no-output or --snapshot mode. */ |
2bba9e53 | 403 | url = NULL; |
00e2e675 DG |
404 | } |
405 | ||
1a241656 | 406 | /* Use default live URL if NO url is/are found. */ |
ecc48a90 | 407 | if ((opt_live_timer && !opt_url) && (opt_live_timer && !opt_data_url)) { |
d73c5802 DG |
408 | ret = asprintf(&alloc_url, "net://127.0.0.1"); |
409 | if (ret < 0) { | |
410 | PERROR("asprintf default live URL"); | |
411 | ret = CMD_FATAL; | |
412 | goto error; | |
413 | } | |
414 | url = alloc_url; | |
415 | print_str_url = url; | |
ecc48a90 JD |
416 | } |
417 | ||
418 | if (opt_snapshot && opt_live_timer) { | |
419 | ERR("Snapshot and live modes are mutually exclusive."); | |
420 | ret = CMD_ERROR; | |
421 | goto error; | |
422 | } | |
423 | ||
16f6f820 DG |
424 | if (opt_snapshot) { |
425 | /* No output by default. */ | |
426 | const char *snapshot_url = NULL; | |
427 | ||
428 | if (opt_url) { | |
429 | snapshot_url = url; | |
430 | } else if (!opt_data_url && !opt_ctrl_url) { | |
431 | /* This is the session path that we need to use as output. */ | |
432 | snapshot_url = url; | |
433 | } | |
434 | ret = lttng_create_session_snapshot(session_name, snapshot_url); | |
ecc48a90 | 435 | } else if (opt_live_timer) { |
8960e9cd DG |
436 | const char *pathname; |
437 | ||
438 | if (opt_relayd_path) { | |
439 | pathname = opt_relayd_path; | |
440 | } else { | |
441 | pathname = INSTALL_BIN_PATH "/lttng-relayd"; | |
442 | } | |
2c521c63 DG |
443 | if (!opt_url && !opt_data_url && !check_relayd() && |
444 | spawn_relayd(pathname, 0) < 0) { | |
8960e9cd DG |
445 | goto error; |
446 | } | |
ecc48a90 | 447 | ret = lttng_create_session_live(session_name, url, opt_live_timer); |
16f6f820 | 448 | } else { |
ecc48a90 | 449 | ret = _lttng_create_session_ext(session_name, url, datetime, -1); |
16f6f820 | 450 | } |
f3ed775e | 451 | if (ret < 0) { |
ae856491 | 452 | /* Don't set ret so lttng can interpret the sessiond error. */ |
42224349 | 453 | switch (-ret) { |
f73fabfd | 454 | case LTTNG_ERR_EXIST_SESS: |
42224349 DG |
455 | WARN("Session %s already exists", session_name); |
456 | break; | |
60e835ca | 457 | default: |
60e835ca | 458 | break; |
42224349 | 459 | } |
f3ed775e DG |
460 | goto error; |
461 | } | |
462 | ||
0ab61906 | 463 | if (opt_ctrl_url && opt_data_url) { |
16f6f820 DG |
464 | if (opt_snapshot) { |
465 | ret = add_snapshot_output(session_name, opt_ctrl_url, | |
466 | opt_data_url); | |
467 | } else { | |
468 | /* Setting up control URI (-C or/and -D opt) */ | |
469 | ret = set_consumer_url(session_name, opt_ctrl_url, opt_data_url); | |
470 | } | |
a4b92340 | 471 | if (ret < 0) { |
4f50c803 DG |
472 | /* Destroy created session because the URL are not valid. */ |
473 | lttng_destroy_session(session_name); | |
a4b92340 DG |
474 | goto error; |
475 | } | |
4f50c803 DG |
476 | } |
477 | ||
478 | MSG("Session %s created.", session_name); | |
16f6f820 | 479 | if (print_str_url && !opt_snapshot) { |
4f50c803 | 480 | MSG("Traces will be written in %s", print_str_url); |
d73c5802 DG |
481 | |
482 | if (opt_live_timer) { | |
483 | MSG("Live timer set to %u usec", opt_live_timer); | |
484 | } | |
16f6f820 DG |
485 | } else if (opt_snapshot) { |
486 | if (print_str_url) { | |
487 | MSG("Default snapshot output set to: %s", print_str_url); | |
488 | } | |
489 | MSG("Snapshot mode set. Every channel enabled for that session will " | |
1daafe0d | 490 | "be set in overwrite mode and mmap output."); |
a4b92340 DG |
491 | } |
492 | ||
37d03ff7 JRJ |
493 | /* Mi output */ |
494 | if (lttng_opt_mi) { | |
495 | ret = mi_created_session(session_name); | |
496 | if (ret) { | |
497 | ret = CMD_ERROR; | |
498 | goto error; | |
499 | } | |
500 | } | |
501 | ||
58a97671 DG |
502 | /* Init lttng session config */ |
503 | ret = config_init(session_name); | |
f3ed775e | 504 | if (ret < 0) { |
27089920 | 505 | ret = CMD_ERROR; |
f3ed775e DG |
506 | goto error; |
507 | } | |
508 | ||
f3ed775e DG |
509 | ret = CMD_SUCCESS; |
510 | ||
511 | error: | |
0e428499 DG |
512 | free(alloc_url); |
513 | free(traces_path); | |
87f222b6 | 514 | free(alloc_path); |
a4b92340 DG |
515 | |
516 | if (ret < 0) { | |
517 | ERR("%s", lttng_strerror(ret)); | |
518 | } | |
f3ed775e DG |
519 | return ret; |
520 | } | |
521 | ||
522 | /* | |
74cc1d0f | 523 | * The 'create <options>' first level command |
1c8d13c8 TD |
524 | * |
525 | * Returns one of the CMD_* result constants. | |
f3ed775e DG |
526 | */ |
527 | int cmd_create(int argc, const char **argv) | |
528 | { | |
37d03ff7 | 529 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; |
ecc48a90 | 530 | char *opt_arg = NULL; |
f3ed775e DG |
531 | static poptContext pc; |
532 | ||
533 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
534 | poptReadDefaultConfig(pc, 0); | |
535 | ||
536 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
537 | switch (opt) { | |
538 | case OPT_HELP: | |
27089920 | 539 | usage(stdout); |
f3ed775e | 540 | goto end; |
679b4943 SM |
541 | case OPT_LIST_OPTIONS: |
542 | list_cmd_options(stdout, long_options); | |
679b4943 | 543 | goto end; |
ecc48a90 JD |
544 | case OPT_LIVE_TIMER: |
545 | { | |
546 | unsigned long v; | |
547 | ||
548 | errno = 0; | |
549 | opt_arg = poptGetOptArg(pc); | |
d73c5802 DG |
550 | if (!opt_arg) { |
551 | /* Set up default values. */ | |
552 | opt_live_timer = (uint32_t) DEFAULT_LTTNG_LIVE_TIMER; | |
553 | DBG("Session live timer interval set to default value %d", | |
554 | opt_live_timer); | |
555 | break; | |
556 | } | |
557 | ||
ecc48a90 JD |
558 | v = strtoul(opt_arg, NULL, 0); |
559 | if (errno != 0 || !isdigit(opt_arg[0])) { | |
560 | ERR("Wrong value in --live parameter: %s", opt_arg); | |
561 | ret = CMD_ERROR; | |
562 | goto end; | |
563 | } | |
564 | if (v != (uint32_t) v) { | |
565 | ERR("32-bit overflow in --live parameter: %s", opt_arg); | |
566 | ret = CMD_ERROR; | |
567 | goto end; | |
568 | } | |
569 | opt_live_timer = (uint32_t) v; | |
570 | DBG("Session live timer interval set to %d", opt_live_timer); | |
571 | break; | |
572 | } | |
f3ed775e DG |
573 | default: |
574 | usage(stderr); | |
575 | ret = CMD_UNDEFINED; | |
576 | goto end; | |
577 | } | |
578 | } | |
579 | ||
785d2d0d | 580 | if (opt_no_consumer) { |
96fe6b8d | 581 | MSG("The option --no-consumer is obsolete. Use --no-output now."); |
785d2d0d DG |
582 | ret = CMD_WARNING; |
583 | goto end; | |
584 | } | |
585 | ||
acc09215 | 586 | /* MI initialization */ |
37d03ff7 JRJ |
587 | if (lttng_opt_mi) { |
588 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
589 | if (!writer) { | |
590 | ret = -LTTNG_ERR_NOMEM; | |
591 | goto end; | |
592 | } | |
593 | ||
594 | /* Open command element */ | |
595 | ret = mi_lttng_writer_command_open(writer, | |
596 | mi_lttng_element_command_create); | |
597 | if (ret) { | |
598 | ret = CMD_ERROR; | |
599 | goto end; | |
600 | } | |
601 | ||
602 | /* Open output element */ | |
603 | ret = mi_lttng_writer_open_element(writer, | |
604 | mi_lttng_element_command_output); | |
605 | if (ret) { | |
606 | ret = CMD_ERROR; | |
607 | goto end; | |
608 | } | |
609 | } | |
f3ed775e DG |
610 | opt_session_name = (char*) poptGetArg(pc); |
611 | ||
37d03ff7 JRJ |
612 | command_ret = create_session(); |
613 | if (command_ret) { | |
614 | success = 0; | |
615 | } | |
616 | ||
617 | if (lttng_opt_mi) { | |
618 | /* Close output element */ | |
619 | ret = mi_lttng_writer_close_element(writer); | |
620 | if (ret) { | |
621 | ret = CMD_ERROR; | |
622 | goto end; | |
623 | } | |
624 | ||
625 | /* Success ? */ | |
626 | ret = mi_lttng_writer_write_element_bool(writer, | |
627 | mi_lttng_element_command_success, success); | |
628 | if (ret) { | |
629 | ret = CMD_ERROR; | |
630 | goto end; | |
631 | } | |
632 | ||
633 | /* Command element close */ | |
634 | ret = mi_lttng_writer_command_close(writer); | |
635 | if (ret) { | |
636 | ret = CMD_ERROR; | |
637 | goto end; | |
638 | } | |
639 | } | |
f3ed775e DG |
640 | |
641 | end: | |
37d03ff7 JRJ |
642 | /* Mi clean-up */ |
643 | if (writer && mi_lttng_writer_destroy(writer)) { | |
644 | /* Preserve original error code */ | |
645 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
646 | } | |
647 | ||
acc09215 | 648 | /* Overwrite ret if an error occurred in create_session() */ |
37d03ff7 JRJ |
649 | ret = command_ret ? command_ret : ret; |
650 | ||
ca1c3607 | 651 | poptFreeContext(pc); |
f3ed775e DG |
652 | return ret; |
653 | } |