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 | |
a4b92340 | 19 | #include <assert.h> |
f3ed775e DG |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <time.h> | |
27 | #include <unistd.h> | |
28 | ||
c399183f | 29 | #include "../command.h" |
679b4943 | 30 | #include "../utils.h" |
f3ed775e | 31 | |
00e2e675 | 32 | #include <common/defaults.h> |
42224349 | 33 | #include <common/sessiond-comm/sessiond-comm.h> |
00e2e675 | 34 | #include <common/uri.h> |
81b86775 | 35 | #include <common/utils.h> |
42224349 | 36 | |
f3ed775e DG |
37 | static char *opt_output_path; |
38 | static char *opt_session_name; | |
a4b92340 DG |
39 | static char *opt_url; |
40 | static char *opt_ctrl_url; | |
41 | static char *opt_data_url; | |
42 | static int opt_no_consumer; | |
43 | static int opt_disable_consumer; | |
f3ed775e DG |
44 | |
45 | enum { | |
46 | OPT_HELP = 1, | |
679b4943 | 47 | OPT_LIST_OPTIONS, |
f3ed775e DG |
48 | }; |
49 | ||
50 | static struct poptOption long_options[] = { | |
51 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
679b4943 SM |
52 | {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL}, |
53 | {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL}, | |
54 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
23d14dff DG |
55 | {"set-url", 'U', POPT_ARG_STRING, &opt_url, 0, 0, 0}, |
56 | {"ctrl-url", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0}, | |
57 | {"data-url", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0}, | |
a4b92340 DG |
58 | {"no-consumer", 0, POPT_ARG_VAL, &opt_no_consumer, 1, 0, 0}, |
59 | {"disable-consumer", 0, POPT_ARG_VAL, &opt_disable_consumer, 1, 0, 0}, | |
f3ed775e DG |
60 | {0, 0, 0, 0, 0, 0, 0} |
61 | }; | |
62 | ||
16de1a24 DG |
63 | /* |
64 | * Please have a look at src/lib/lttng-ctl/lttng-ctl.c for more information on | |
65 | * why this declaration exists and used ONLY in for this command. | |
66 | */ | |
07424f16 DG |
67 | extern int _lttng_create_session_ext(const char *name, const char *url, |
68 | const char *datetime); | |
69 | ||
f3ed775e DG |
70 | /* |
71 | * usage | |
72 | */ | |
73 | static void usage(FILE *ofp) | |
74 | { | |
a4b92340 | 75 | fprintf(ofp, "usage: lttng create [NAME] [OPTIONS] \n"); |
f3ed775e | 76 | fprintf(ofp, "\n"); |
a4b92340 DG |
77 | fprintf(ofp, "Without a given NAME, the default is 'auto-<yyyymmdd>-<hhmmss>'\n"); |
78 | fprintf(ofp, "\n"); | |
79 | fprintf(ofp, "Options:\n"); | |
f3ed775e | 80 | fprintf(ofp, " -h, --help Show this help\n"); |
1c8d13c8 | 81 | fprintf(ofp, " --list-options Simple listing of options\n"); |
58a97671 | 82 | fprintf(ofp, " -o, --output PATH Specify output path for traces\n"); |
a4b92340 DG |
83 | fprintf(ofp, "\n"); |
84 | fprintf(ofp, "Extended Options:\n"); | |
85 | fprintf(ofp, "\n"); | |
86 | fprintf(ofp, "Using these options, each API call can be controlled individually.\n"); | |
87 | fprintf(ofp, "\n"); | |
88 | fprintf(ofp, " -U, --set-url=URL Set URL destination of the trace data.\n"); | |
00e2e675 | 89 | fprintf(ofp, " It is persistent for the session lifetime.\n"); |
a4b92340 DG |
90 | fprintf(ofp, " This will set both data and control URL.\n"); |
91 | fprintf(ofp, " You can change it with the enable-consumer cmd\n"); | |
92 | fprintf(ofp, " -C, --ctrl-url=URL Set control path URL. (Must use -D also)\n"); | |
93 | fprintf(ofp, " -D, --data-url=URL Set data path URL. (Must use -C also)\n"); | |
94 | fprintf(ofp, " --no-consumer Don't activate a consumer for this session.\n"); | |
785d2d0d | 95 | fprintf(ofp, " OBSELETE\n"); |
a4b92340 DG |
96 | fprintf(ofp, " --disable-consumer\n"); |
97 | fprintf(ofp, " Disable consumer for this session.\n"); | |
785d2d0d | 98 | fprintf(ofp, " OBSELETE\n"); |
a4b92340 DG |
99 | fprintf(ofp, "\n"); |
100 | fprintf(ofp, "Please refer to the man page (lttng(1)) for more information on network\n"); | |
101 | fprintf(ofp, "streaming mechanisms and explanation of the control and data port\n"); | |
102 | fprintf(ofp, "You must have a running remote lttng-relayd for network streaming\n"); | |
103 | fprintf(ofp, "\n"); | |
104 | fprintf(ofp, "URL format is has followed:\n"); | |
105 | fprintf(ofp, "\n"); | |
106 | fprintf(ofp, " proto://[HOST|IP][:PORT1[:PORT2]][/TRACE_PATH]\n"); | |
107 | fprintf(ofp, "\n"); | |
108 | fprintf(ofp, " Supported protocols are (proto):\n"); | |
109 | fprintf(ofp, " > file://...\n"); | |
110 | fprintf(ofp, " Local filesystem full path.\n"); | |
111 | fprintf(ofp, "\n"); | |
16de1a24 | 112 | fprintf(ofp, " > net[6]://...\n"); |
a4b92340 DG |
113 | fprintf(ofp, " This will use the default network transport layer which is\n"); |
114 | fprintf(ofp, " TCP for both control (PORT1) and data port (PORT2).\n"); | |
115 | fprintf(ofp, " The default ports are respectively 5342 and 5343.\n"); | |
116 | fprintf(ofp, "\n"); | |
0ab61906 | 117 | fprintf(ofp, " > tcp[6]://...\n"); |
a4b92340 DG |
118 | fprintf(ofp, " Can only be used with -C and -D together\n"); |
119 | fprintf(ofp, "\n"); | |
120 | fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n"); | |
121 | fprintf(ofp, "\n"); | |
122 | fprintf(ofp, "Examples:\n"); | |
123 | fprintf(ofp, " # lttng create -U net://192.168.1.42\n"); | |
124 | fprintf(ofp, " Uses TCP and default ports for the given destination.\n"); | |
125 | fprintf(ofp, " # lttng create -U net6://[fe80::f66d:4ff:fe53:d220]\n"); | |
126 | fprintf(ofp, " Uses TCP, default ports and IPv6.\n"); | |
127 | fprintf(ofp, " # lttng create s1 -U net://myhost.com:3229\n"); | |
128 | fprintf(ofp, " Set the consumer to the remote HOST on port 3229 for control.\n"); | |
f3ed775e DG |
129 | fprintf(ofp, "\n"); |
130 | } | |
131 | ||
00e2e675 | 132 | /* |
a4b92340 | 133 | * For a session name, set the consumer URLs. |
00e2e675 | 134 | */ |
a4b92340 DG |
135 | static int set_consumer_url(const char *session_name, const char *ctrl_url, |
136 | const char *data_url) | |
00e2e675 | 137 | { |
a4b92340 DG |
138 | int ret; |
139 | struct lttng_handle *handle; | |
140 | struct lttng_domain dom; | |
141 | ||
142 | assert(session_name); | |
143 | ||
144 | /* | |
145 | * Set handle with the session name and the domain set to 0. This means to | |
146 | * the session daemon that the next action applies on the tracing session | |
147 | * rather then the domain specific session. | |
148 | */ | |
149 | memset(&dom, 0, sizeof(dom)); | |
150 | ||
151 | handle = lttng_create_handle(session_name, &dom); | |
152 | if (handle == NULL) { | |
153 | ret = CMD_FATAL; | |
154 | goto error; | |
155 | } | |
00e2e675 | 156 | |
a4b92340 DG |
157 | ret = lttng_set_consumer_url(handle, ctrl_url, data_url); |
158 | if (ret < 0) { | |
159 | goto error; | |
00e2e675 DG |
160 | } |
161 | ||
a4b92340 DG |
162 | if (ctrl_url) { |
163 | MSG("Control URL %s set for session %s", ctrl_url, session_name); | |
00e2e675 DG |
164 | } |
165 | ||
a4b92340 DG |
166 | if (data_url) { |
167 | MSG("Data URL %s set for session %s", data_url, session_name); | |
168 | } | |
169 | ||
170 | error: | |
171 | lttng_destroy_handle(handle); | |
172 | return ret; | |
173 | } | |
174 | ||
f3ed775e | 175 | /* |
1c8d13c8 TD |
176 | * Create a tracing session. |
177 | * If no name is specified, a default name is generated. | |
f3ed775e | 178 | * |
1c8d13c8 | 179 | * Returns one of the CMD_* result constants. |
f3ed775e | 180 | */ |
a4b92340 | 181 | static int create_session(void) |
f3ed775e | 182 | { |
a4b92340 | 183 | int ret; |
07424f16 | 184 | char *session_name = NULL, *traces_path = NULL, *alloc_path = NULL; |
a4b92340 | 185 | char *alloc_url = NULL, *url = NULL, datetime[16]; |
487b253b | 186 | char session_name_date[NAME_MAX + 17], *print_str_url = NULL; |
f3ed775e DG |
187 | time_t rawtime; |
188 | struct tm *timeinfo; | |
189 | ||
d6175221 DG |
190 | /* Get date and time for automatic session name/path */ |
191 | time(&rawtime); | |
192 | timeinfo = localtime(&rawtime); | |
193 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
194 | ||
f3ed775e DG |
195 | /* Auto session name creation */ |
196 | if (opt_session_name == NULL) { | |
07424f16 DG |
197 | ret = snprintf(session_name_date, sizeof(session_name_date), |
198 | DEFAULT_SESSION_NAME "-%s", datetime); | |
d6175221 | 199 | if (ret < 0) { |
07424f16 DG |
200 | PERROR("snprintf session name"); |
201 | goto error; | |
202 | } | |
04965770 | 203 | session_name = session_name_date; |
07424f16 | 204 | DBG("Auto session name set to %s", session_name_date); |
f3ed775e | 205 | } else { |
487b253b DG |
206 | if (strlen(opt_session_name) > NAME_MAX) { |
207 | ERR("Session name too long. Length must be lower or equal to %d", | |
208 | NAME_MAX); | |
209 | ret = LTTNG_ERR_SESSION_FAIL; | |
210 | goto error; | |
211 | } | |
61b35a5a DG |
212 | if (strncmp(opt_session_name, DEFAULT_SESSION_NAME, |
213 | strlen(DEFAULT_SESSION_NAME)) == 0 && | |
214 | strlen(opt_session_name) == strlen(DEFAULT_SESSION_NAME)) { | |
215 | ERR("%s is a reserved keyword for default session(s)", | |
216 | DEFAULT_SESSION_NAME); | |
217 | ret = CMD_ERROR; | |
218 | goto error; | |
219 | } | |
f3ed775e | 220 | session_name = opt_session_name; |
07424f16 DG |
221 | ret = snprintf(session_name_date, sizeof(session_name_date), |
222 | "%s-%s", session_name, datetime); | |
223 | if (ret < 0) { | |
224 | PERROR("snprintf session name"); | |
225 | goto error; | |
226 | } | |
f3ed775e DG |
227 | } |
228 | ||
785d2d0d | 229 | if (opt_output_path != NULL) { |
81b86775 | 230 | traces_path = utils_expand_path(opt_output_path); |
00e2e675 DG |
231 | if (traces_path == NULL) { |
232 | ret = CMD_ERROR; | |
233 | goto error; | |
234 | } | |
235 | ||
a4b92340 DG |
236 | /* Create URL string from the local filesytem path */ |
237 | ret = asprintf(&alloc_url, "file://%s", traces_path); | |
00e2e675 | 238 | if (ret < 0) { |
a4b92340 | 239 | PERROR("asprintf url path"); |
00e2e675 DG |
240 | ret = CMD_FATAL; |
241 | goto error; | |
242 | } | |
a4b92340 DG |
243 | /* URL to use in the lttng_create_session() call */ |
244 | url = alloc_url; | |
40b03f52 | 245 | print_str_url = traces_path; |
a4b92340 DG |
246 | } else if (opt_url) { /* Handling URL (-U opt) */ |
247 | url = opt_url; | |
40b03f52 | 248 | print_str_url = url; |
a4b92340 | 249 | } else if (opt_ctrl_url == NULL && opt_data_url == NULL) { |
00e2e675 | 250 | /* Auto output path */ |
d386b234 | 251 | alloc_path = config_get_default_path(); |
f3ed775e | 252 | if (alloc_path == NULL) { |
d386b234 | 253 | ERR("HOME path not found.\n \ |
00e2e675 | 254 | Please specify an output path using -o, --output PATH"); |
f3ed775e DG |
255 | ret = CMD_FATAL; |
256 | goto error; | |
257 | } | |
d386b234 | 258 | alloc_path = strdup(alloc_path); |
f3ed775e | 259 | |
07424f16 DG |
260 | ret = asprintf(&alloc_url, |
261 | "file://%s/" DEFAULT_TRACE_DIR_NAME "/%s", | |
262 | alloc_path, session_name_date); | |
58a97671 | 263 | if (ret < 0) { |
00e2e675 DG |
264 | PERROR("asprintf trace dir name"); |
265 | ret = CMD_FATAL; | |
58a97671 DG |
266 | goto error; |
267 | } | |
00e2e675 | 268 | |
a4b92340 | 269 | url = alloc_url; |
40b03f52 | 270 | print_str_url = alloc_url + strlen("file://"); |
00e2e675 DG |
271 | } |
272 | ||
785d2d0d DG |
273 | assert(url); |
274 | ||
07424f16 | 275 | ret = _lttng_create_session_ext(session_name, url, datetime); |
f3ed775e | 276 | if (ret < 0) { |
ae856491 | 277 | /* Don't set ret so lttng can interpret the sessiond error. */ |
42224349 | 278 | switch (-ret) { |
f73fabfd | 279 | case LTTNG_ERR_EXIST_SESS: |
42224349 DG |
280 | WARN("Session %s already exists", session_name); |
281 | break; | |
282 | } | |
f3ed775e DG |
283 | goto error; |
284 | } | |
285 | ||
04965770 | 286 | MSG("Session %s created.", session_name); |
0ab61906 DG |
287 | if (print_str_url) { |
288 | MSG("Traces will be written in %s", print_str_url); | |
289 | } | |
a4b92340 | 290 | |
0ab61906 | 291 | if (opt_ctrl_url && opt_data_url) { |
a4b92340 DG |
292 | /* Setting up control URI (-C or/and -D opt) */ |
293 | ret = set_consumer_url(session_name, opt_ctrl_url, opt_data_url); | |
294 | if (ret < 0) { | |
295 | goto error; | |
296 | } | |
0ab61906 DG |
297 | } else if ((!opt_ctrl_url && opt_data_url) || |
298 | (opt_ctrl_url && !opt_data_url)) { | |
299 | ERR("You need both control and data URL."); | |
300 | ret = CMD_ERROR; | |
301 | goto error; | |
a4b92340 DG |
302 | } |
303 | ||
58a97671 DG |
304 | /* Init lttng session config */ |
305 | ret = config_init(session_name); | |
f3ed775e | 306 | if (ret < 0) { |
27089920 | 307 | ret = CMD_ERROR; |
f3ed775e DG |
308 | goto error; |
309 | } | |
310 | ||
07424f16 | 311 | |
f3ed775e DG |
312 | ret = CMD_SUCCESS; |
313 | ||
314 | error: | |
0e428499 DG |
315 | free(alloc_url); |
316 | free(traces_path); | |
87f222b6 | 317 | free(alloc_path); |
a4b92340 DG |
318 | |
319 | if (ret < 0) { | |
320 | ERR("%s", lttng_strerror(ret)); | |
321 | } | |
f3ed775e DG |
322 | return ret; |
323 | } | |
324 | ||
325 | /* | |
74cc1d0f | 326 | * The 'create <options>' first level command |
1c8d13c8 TD |
327 | * |
328 | * Returns one of the CMD_* result constants. | |
f3ed775e DG |
329 | */ |
330 | int cmd_create(int argc, const char **argv) | |
331 | { | |
332 | int opt, ret = CMD_SUCCESS; | |
333 | static poptContext pc; | |
334 | ||
335 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
336 | poptReadDefaultConfig(pc, 0); | |
337 | ||
338 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
339 | switch (opt) { | |
340 | case OPT_HELP: | |
27089920 | 341 | usage(stdout); |
f3ed775e | 342 | goto end; |
679b4943 SM |
343 | case OPT_LIST_OPTIONS: |
344 | list_cmd_options(stdout, long_options); | |
679b4943 | 345 | goto end; |
f3ed775e DG |
346 | default: |
347 | usage(stderr); | |
348 | ret = CMD_UNDEFINED; | |
349 | goto end; | |
350 | } | |
351 | } | |
352 | ||
785d2d0d DG |
353 | if (opt_no_consumer) { |
354 | MSG("The option --no-consumer is obsolete."); | |
355 | ret = CMD_WARNING; | |
356 | goto end; | |
357 | } | |
358 | ||
359 | if (opt_disable_consumer) { | |
360 | MSG("The option --disable-consumer is obsolete."); | |
361 | ret = CMD_WARNING; | |
362 | goto end; | |
363 | } | |
364 | ||
f3ed775e DG |
365 | opt_session_name = (char*) poptGetArg(pc); |
366 | ||
367 | ret = create_session(); | |
368 | ||
369 | end: | |
ca1c3607 | 370 | poptFreeContext(pc); |
f3ed775e DG |
371 | return ret; |
372 | } |