Commit | Line | Data |
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8c42d845 JG |
1 | /* |
2 | * Copyright (C) 2014 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
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. | |
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 | * | |
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. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
8c42d845 JG |
19 | #include <inttypes.h> |
20 | #include <popt.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <assert.h> | |
25 | ||
1734c658 | 26 | #include <common/mi-lttng.h> |
f40ef1d5 | 27 | #include <common/config/session-config.h> |
b6d4654a | 28 | #include <lttng/load.h> |
1734c658 | 29 | |
8c42d845 JG |
30 | #include "../command.h" |
31 | ||
32 | static char *opt_input_path; | |
fe559816 | 33 | static char *opt_override_url; |
e1f481f6 | 34 | static char *opt_override_session_name; |
8c42d845 JG |
35 | static int opt_force; |
36 | static int opt_load_all; | |
37 | ||
11143783 DG |
38 | static const char *session_name; |
39 | ||
8c42d845 JG |
40 | enum { |
41 | OPT_HELP = 1, | |
42 | OPT_ALL, | |
43 | OPT_FORCE, | |
13a810d5 | 44 | OPT_LIST_OPTIONS, |
8c42d845 JG |
45 | }; |
46 | ||
1734c658 JRJ |
47 | static struct mi_writer *writer; |
48 | ||
8c42d845 JG |
49 | static struct poptOption load_opts[] = { |
50 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
e1f481f6 JR |
51 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, |
52 | {"all", 'a', POPT_ARG_NONE, 0, OPT_ALL, 0, 0}, | |
53 | {"input-path", 'i', POPT_ARG_STRING, &opt_input_path, 0, 0, 0}, | |
54 | {"force", 'f', POPT_ARG_NONE, 0, OPT_FORCE, 0, 0}, | |
55 | {"override-url", 0, POPT_ARG_STRING, &opt_override_url, 0, 0, 0}, | |
56 | {"override-name", 0, POPT_ARG_STRING, &opt_override_session_name, 0, 0, 0}, | |
57 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
8c42d845 JG |
58 | {0, 0, 0, 0, 0, 0, 0} |
59 | }; | |
60 | ||
1734c658 JRJ |
61 | static int mi_partial_session(const char *session_name) |
62 | { | |
63 | int ret; | |
64 | assert(writer); | |
65 | assert(session_name); | |
66 | ||
67 | /* Open session element */ | |
68 | ret = mi_lttng_writer_open_element(writer, config_element_session); | |
69 | if (ret) { | |
70 | goto end; | |
71 | } | |
72 | ||
73 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
74 | session_name); | |
75 | if (ret) { | |
76 | goto end; | |
77 | } | |
78 | ||
79 | /* Closing session element */ | |
80 | ret = mi_lttng_writer_close_element(writer); | |
81 | end: | |
82 | return ret; | |
83 | } | |
84 | ||
85 | /* | |
86 | * Mi print of load command | |
87 | */ | |
88 | static int mi_load_print(const char *session_name) | |
89 | { | |
90 | int ret; | |
91 | assert(writer); | |
92 | ||
93 | if (opt_load_all) { | |
94 | /* We use a wildcard to represent all sessions */ | |
95 | session_name = "*"; | |
96 | } | |
97 | ||
98 | /* Print load element */ | |
99 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_load); | |
100 | if (ret) { | |
101 | goto end; | |
102 | } | |
103 | ||
104 | /* Print session element */ | |
105 | ret = mi_partial_session(session_name); | |
106 | if (ret) { | |
107 | goto end; | |
108 | } | |
109 | ||
110 | /* Path element */ | |
111 | if (opt_input_path) { | |
112 | ret = mi_lttng_writer_write_element_string(writer, config_element_path, | |
113 | opt_input_path); | |
114 | if (ret) { | |
115 | goto end; | |
116 | } | |
117 | } | |
118 | ||
119 | /* Close load element */ | |
120 | ret = mi_lttng_writer_close_element(writer); | |
121 | ||
122 | end: | |
123 | return ret; | |
124 | } | |
125 | ||
8c42d845 JG |
126 | /* |
127 | * The 'load <options>' first level command | |
128 | */ | |
129 | int cmd_load(int argc, const char **argv) | |
130 | { | |
b6d4654a | 131 | int ret, success; |
8c42d845 JG |
132 | int opt; |
133 | poptContext pc; | |
b6d4654a JR |
134 | struct lttng_load_session_attr *session_attr = NULL; |
135 | char *input_path = NULL; | |
8c42d845 JG |
136 | |
137 | pc = poptGetContext(NULL, argc, argv, load_opts, 0); | |
138 | poptReadDefaultConfig(pc, 0); | |
139 | ||
140 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
141 | switch (opt) { | |
142 | case OPT_HELP: | |
4ba92f18 | 143 | SHOW_HELP(); |
b6d4654a | 144 | ret = CMD_SUCCESS; |
8c42d845 JG |
145 | goto end; |
146 | case OPT_ALL: | |
147 | opt_load_all = 1; | |
148 | break; | |
13a810d5 DG |
149 | case OPT_LIST_OPTIONS: |
150 | list_cmd_options(stdout, load_opts); | |
b6d4654a | 151 | ret = CMD_SUCCESS; |
13a810d5 | 152 | goto end; |
8c42d845 JG |
153 | case OPT_FORCE: |
154 | opt_force = 1; | |
155 | break; | |
156 | default: | |
8c42d845 JG |
157 | ret = CMD_UNDEFINED; |
158 | goto end; | |
159 | } | |
160 | } | |
161 | ||
623bc34c JG |
162 | ret = lttng_session_daemon_alive(); |
163 | if (!ret) { | |
164 | ERR("No session daemon is available"); | |
165 | ret = CMD_ERROR; | |
166 | goto end; | |
167 | } | |
168 | ||
11143783 DG |
169 | if (!opt_load_all) { |
170 | session_name = poptGetArg(pc); | |
732b768a DG |
171 | if (session_name) { |
172 | DBG2("Loading session name: %s", session_name); | |
1734c658 JRJ |
173 | } else { |
174 | /* Default to load_all */ | |
175 | opt_load_all = 1; | |
11143783 | 176 | } |
8c42d845 JG |
177 | } |
178 | ||
1734c658 JRJ |
179 | /* Mi check */ |
180 | if (lttng_opt_mi) { | |
181 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
182 | if (!writer) { | |
b6d4654a | 183 | ret = CMD_ERROR; |
1734c658 JRJ |
184 | goto end; |
185 | } | |
186 | ||
187 | /* Open command element */ | |
188 | ret = mi_lttng_writer_command_open(writer, | |
189 | mi_lttng_element_command_load); | |
190 | if (ret) { | |
191 | ret = CMD_ERROR; | |
192 | goto end; | |
193 | } | |
194 | ||
195 | /* Open output element */ | |
196 | ret = mi_lttng_writer_open_element(writer, | |
197 | mi_lttng_element_command_output); | |
198 | if (ret) { | |
199 | ret = CMD_ERROR; | |
200 | goto end; | |
201 | } | |
202 | } | |
203 | ||
b6d4654a JR |
204 | /* Prepare load attributes */ |
205 | session_attr = lttng_load_session_attr_create(); | |
206 | if (!session_attr) { | |
207 | ERR("Failed to create load session attributes"); | |
208 | ret = CMD_ERROR; | |
209 | goto end; | |
210 | } | |
211 | ||
212 | /* | |
213 | * Set the input url | |
214 | * lttng_load_session_attr_set_input_url only suppports absolute path. | |
215 | * Use realpath to resolve any relative path. | |
216 | * */ | |
217 | if (opt_input_path) { | |
218 | input_path = realpath(opt_input_path, NULL); | |
219 | if (!input_path) { | |
220 | PERROR("Invalid input path"); | |
221 | ret = CMD_ERROR; | |
222 | goto end; | |
223 | } | |
224 | } else { | |
225 | input_path = NULL; | |
226 | } | |
227 | ||
228 | ret = lttng_load_session_attr_set_input_url(session_attr, | |
229 | input_path); | |
230 | if (ret) { | |
231 | ERR("Invalid input path"); | |
232 | ret = CMD_ERROR; | |
233 | goto end; | |
234 | } | |
235 | ||
236 | /* Set the session name. NULL means all sessions should be loaded */ | |
237 | ret = lttng_load_session_attr_set_session_name(session_attr, | |
238 | session_name); | |
239 | if (ret) { | |
240 | ERR("Invalid session name"); | |
241 | ret = CMD_ERROR; | |
242 | goto end; | |
243 | } | |
244 | ||
245 | /* Set the overwrite attribute */ | |
246 | ret = lttng_load_session_attr_set_overwrite(session_attr, opt_force); | |
247 | if (ret) { | |
248 | ERR("Force argument could not be applied"); | |
249 | ret = CMD_ERROR; | |
250 | goto end; | |
251 | } | |
252 | ||
fe559816 JR |
253 | /* Set the overrides attributes if any */ |
254 | if (opt_override_url) { | |
255 | ret = lttng_load_session_attr_set_override_url(session_attr, | |
256 | opt_override_url); | |
257 | if (ret) { | |
258 | ERR("Url override is invalid"); | |
259 | goto end; | |
260 | } | |
261 | } | |
262 | ||
e1f481f6 JR |
263 | if (opt_override_session_name) { |
264 | if (opt_load_all) { | |
265 | ERR("Options --all and --override-name cannot be used simultaneously"); | |
266 | ret = CMD_ERROR; | |
267 | goto end; | |
268 | } | |
269 | ret = lttng_load_session_attr_set_override_session_name(session_attr, | |
270 | opt_override_session_name); | |
271 | if (ret) { | |
272 | ERR("Failed to set session name override"); | |
273 | ret = CMD_ERROR; | |
274 | goto end; | |
275 | } | |
276 | } | |
277 | ||
b6d4654a JR |
278 | ret = lttng_load_session(session_attr); |
279 | if (ret) { | |
280 | ERR("%s", lttng_strerror(ret)); | |
1734c658 | 281 | success = 0; |
b6d4654a | 282 | ret = CMD_ERROR; |
279d6193 DG |
283 | } else { |
284 | if (opt_load_all) { | |
285 | MSG("All sessions have been loaded successfully"); | |
732b768a | 286 | } else if (session_name) { |
b6d4654a | 287 | ret = config_init((char *) session_name); |
8e525b95 | 288 | if (ret < 0) { |
96694f0b JG |
289 | WARN("Could not set %s as the default session", |
290 | session_name); | |
8e525b95 | 291 | } |
279d6193 | 292 | MSG("Session %s has been loaded successfully", session_name); |
732b768a DG |
293 | } else { |
294 | MSG("Session has been loaded successfully"); | |
279d6193 | 295 | } |
fe559816 JR |
296 | |
297 | if (opt_override_url) { | |
298 | MSG("Session output url overridden with %s", opt_override_url); | |
299 | } | |
1734c658 | 300 | success = 1; |
b6d4654a | 301 | ret = CMD_SUCCESS; |
1734c658 JRJ |
302 | } |
303 | ||
304 | /* Mi Printing and closing */ | |
305 | if (lttng_opt_mi) { | |
306 | /* Mi print */ | |
307 | ret = mi_load_print(session_name); | |
308 | if (ret) { | |
309 | ret = CMD_ERROR; | |
310 | goto end; | |
311 | } | |
312 | ||
313 | /* Close output element */ | |
314 | ret = mi_lttng_writer_close_element(writer); | |
315 | if (ret) { | |
316 | ret = CMD_ERROR; | |
317 | goto end; | |
318 | } | |
319 | ||
320 | /* Success ? */ | |
321 | ret = mi_lttng_writer_write_element_bool(writer, | |
322 | mi_lttng_element_command_success, success); | |
323 | if (ret) { | |
324 | ret = CMD_ERROR; | |
325 | goto end; | |
326 | } | |
327 | ||
328 | /* Command element close */ | |
329 | ret = mi_lttng_writer_command_close(writer); | |
330 | if (ret) { | |
331 | ret = CMD_ERROR; | |
332 | goto end; | |
333 | } | |
8c42d845 JG |
334 | } |
335 | end: | |
1734c658 | 336 | if (writer && mi_lttng_writer_destroy(writer)) { |
b6d4654a | 337 | ERR("Failed to destroy mi lttng writer"); |
1734c658 JRJ |
338 | } |
339 | ||
b6d4654a JR |
340 | lttng_load_session_attr_destroy(session_attr); |
341 | free(input_path); | |
8c42d845 JG |
342 | poptFreeContext(pc); |
343 | return ret; | |
344 | } |