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c864d6d7 JG |
1 | /* |
2 | * Copyright (C) 2013 - 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 | ||
18 | #define _GNU_SOURCE | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
c864d6d7 JG |
20 | #include <inttypes.h> |
21 | #include <popt.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <assert.h> | |
26 | ||
1734c658 JRJ |
27 | #include <common/mi-lttng.h> |
28 | ||
c864d6d7 JG |
29 | #include "../command.h" |
30 | #include <lttng/save.h> | |
31 | ||
32 | static char *opt_output_path; | |
33 | static int opt_force; | |
34 | static int opt_save_all; | |
35 | ||
36 | enum { | |
37 | OPT_HELP = 1, | |
38 | OPT_ALL, | |
39 | OPT_FORCE, | |
13a810d5 | 40 | OPT_LIST_OPTIONS, |
c864d6d7 JG |
41 | }; |
42 | ||
43 | static struct poptOption save_opts[] = { | |
44 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
45 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
46 | {"all", 'a', POPT_ARG_NONE, 0, OPT_ALL, 0, 0}, | |
47 | {"output-path", 'o', POPT_ARG_STRING, &opt_output_path, 0, 0, 0}, | |
48 | {"force", 'f', POPT_ARG_NONE, 0, OPT_FORCE, 0, 0}, | |
13a810d5 | 49 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
c864d6d7 JG |
50 | {0, 0, 0, 0, 0, 0, 0} |
51 | }; | |
52 | ||
1734c658 JRJ |
53 | static struct mi_writer *writer; |
54 | ||
c864d6d7 JG |
55 | /* |
56 | * usage | |
57 | */ | |
58 | static void usage(FILE *ofp) | |
59 | { | |
60 | fprintf(ofp, "usage: lttng save [OPTIONS] [SESSION]\n"); | |
61 | fprintf(ofp, "\n"); | |
62 | fprintf(ofp, "Options:\n"); | |
63 | fprintf(ofp, " -h, --help Show this help\n"); | |
64 | fprintf(ofp, " -a, --all Save all sessions (default)\n"); | |
65 | fprintf(ofp, " -o, --output-path Output path of the session configuration(s)\n"); | |
66 | fprintf(ofp, " -f, --force Overwrite existing session configuration(s)\n"); | |
67 | } | |
68 | ||
1734c658 JRJ |
69 | static int mi_partial_session(const char *session_name) |
70 | { | |
71 | int ret; | |
72 | assert(writer); | |
73 | assert(session_name); | |
74 | ||
75 | /* Open session element */ | |
76 | ret = mi_lttng_writer_open_element(writer, config_element_session); | |
77 | if (ret) { | |
78 | goto end; | |
79 | } | |
80 | ||
81 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
82 | session_name); | |
83 | if (ret) { | |
84 | goto end; | |
85 | } | |
86 | ||
87 | /* Closing session element */ | |
88 | ret = mi_lttng_writer_close_element(writer); | |
89 | end: | |
90 | return ret; | |
91 | } | |
92 | ||
93 | /* | |
94 | * Mi print of save command | |
95 | */ | |
96 | static int mi_save_print(const char *session_name) | |
97 | { | |
98 | int ret; | |
99 | assert(writer); | |
100 | ||
101 | if (opt_save_all) { | |
102 | /* We use a wildcard to represent all sessions */ | |
103 | session_name = "*"; | |
104 | } | |
105 | ||
106 | /* Print save element */ | |
107 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_save); | |
108 | if (ret) { | |
109 | goto end; | |
110 | } | |
111 | ||
112 | /* Print session element */ | |
113 | ret = mi_partial_session(session_name); | |
114 | if (ret) { | |
115 | goto end; | |
116 | } | |
117 | ||
118 | /* Path element */ | |
119 | if (opt_output_path) { | |
120 | ret = mi_lttng_writer_write_element_string(writer, config_element_path, | |
121 | opt_output_path); | |
122 | if (ret) { | |
123 | goto end; | |
124 | } | |
125 | } | |
126 | ||
127 | /* Close save element */ | |
128 | ret = mi_lttng_writer_close_element(writer); | |
129 | end: | |
130 | return ret; | |
131 | } | |
132 | ||
c864d6d7 JG |
133 | /* |
134 | * The 'save <options>' first level command | |
135 | */ | |
136 | int cmd_save(int argc, const char **argv) | |
137 | { | |
1734c658 | 138 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success; |
c864d6d7 JG |
139 | int opt; |
140 | const char *session_name = NULL; | |
141 | poptContext pc; | |
142 | struct lttng_save_session_attr *attr; | |
143 | ||
144 | pc = poptGetContext(NULL, argc, argv, save_opts, 0); | |
145 | poptReadDefaultConfig(pc, 0); | |
146 | ||
147 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
148 | switch (opt) { | |
149 | case OPT_HELP: | |
150 | usage(stdout); | |
151 | goto end; | |
152 | case OPT_ALL: | |
153 | opt_save_all = 1; | |
154 | break; | |
155 | case OPT_FORCE: | |
156 | opt_force = 1; | |
157 | break; | |
13a810d5 DG |
158 | case OPT_LIST_OPTIONS: |
159 | list_cmd_options(stdout, save_opts); | |
160 | goto end; | |
c864d6d7 JG |
161 | default: |
162 | usage(stderr); | |
163 | ret = CMD_UNDEFINED; | |
164 | goto end; | |
165 | } | |
166 | } | |
167 | ||
168 | if (!opt_save_all) { | |
169 | session_name = poptGetArg(pc); | |
59b41aa2 JRJ |
170 | if (session_name) { |
171 | DBG2("Session name: %s", session_name); | |
1734c658 JRJ |
172 | } else { |
173 | /* default to opt_save_all */ | |
174 | opt_save_all = 1; | |
c864d6d7 | 175 | } |
c864d6d7 JG |
176 | } |
177 | ||
178 | attr = lttng_save_session_attr_create(); | |
179 | if (!attr) { | |
180 | ret = CMD_FATAL; | |
181 | goto end_destroy; | |
182 | } | |
183 | ||
184 | if (lttng_save_session_attr_set_session_name(attr, session_name)) { | |
185 | ret = CMD_ERROR; | |
186 | goto end_destroy; | |
187 | } | |
188 | ||
189 | if (lttng_save_session_attr_set_overwrite(attr, opt_force)) { | |
190 | ret = CMD_ERROR; | |
191 | goto end_destroy; | |
192 | } | |
193 | ||
ab85fc7f | 194 | if (lttng_save_session_attr_set_output_url(attr, opt_output_path)) { |
c864d6d7 JG |
195 | ret = CMD_ERROR; |
196 | goto end_destroy; | |
197 | } | |
198 | ||
1734c658 JRJ |
199 | /* Mi check */ |
200 | if (lttng_opt_mi) { | |
201 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
202 | if (!writer) { | |
203 | ret = -LTTNG_ERR_NOMEM; | |
204 | goto end_destroy; | |
205 | } | |
206 | ||
207 | /* Open command element */ | |
208 | ret = mi_lttng_writer_command_open(writer, | |
209 | mi_lttng_element_command_save); | |
210 | if (ret) { | |
211 | ret = CMD_ERROR; | |
212 | goto end_destroy; | |
213 | } | |
214 | ||
215 | /* Open output element */ | |
216 | ret = mi_lttng_writer_open_element(writer, | |
217 | mi_lttng_element_command_output); | |
218 | if (ret) { | |
219 | ret = CMD_ERROR; | |
220 | goto end_destroy; | |
221 | } | |
222 | } | |
223 | ||
224 | command_ret = lttng_save_session(attr); | |
225 | if (command_ret < 0) { | |
226 | ERR("%s", lttng_strerror(command_ret)); | |
227 | success = 0; | |
ab85fc7f DG |
228 | } else { |
229 | /* Inform the user of what just happened on success. */ | |
230 | if (session_name && opt_output_path) { | |
231 | MSG("Session %s saved successfully in %s.", session_name, | |
232 | opt_output_path); | |
233 | } else if (session_name && !opt_output_path) { | |
234 | MSG("Session %s saved successfully.", session_name); | |
235 | } else if (!session_name && opt_output_path) { | |
236 | MSG("All sessions have been saved successfully in %s.", | |
237 | opt_output_path); | |
238 | } else { | |
239 | MSG("All sessions have been saved successfully."); | |
c864d6d7 | 240 | } |
1734c658 JRJ |
241 | success = 1; |
242 | } | |
243 | ||
244 | /* Mi Printing and closing */ | |
245 | if (lttng_opt_mi) { | |
246 | /* Mi print */ | |
247 | ret = mi_save_print(session_name); | |
248 | if (ret) { | |
249 | ret = CMD_ERROR; | |
250 | goto end_destroy; | |
251 | } | |
252 | ||
253 | /* Close output element */ | |
254 | ret = mi_lttng_writer_close_element(writer); | |
255 | if (ret) { | |
256 | ret = CMD_ERROR; | |
257 | goto end_destroy; | |
258 | } | |
259 | ||
260 | /* Success ? */ | |
261 | ret = mi_lttng_writer_write_element_bool(writer, | |
262 | mi_lttng_element_command_success, success); | |
263 | if (ret) { | |
264 | ret = CMD_ERROR; | |
265 | goto end_destroy; | |
266 | } | |
267 | ||
268 | /* Command element close */ | |
269 | ret = mi_lttng_writer_command_close(writer); | |
270 | if (ret) { | |
271 | ret = CMD_ERROR; | |
272 | goto end_destroy; | |
273 | } | |
c864d6d7 JG |
274 | } |
275 | end_destroy: | |
276 | lttng_save_session_attr_destroy(attr); | |
277 | end: | |
1734c658 JRJ |
278 | /* Mi clean-up */ |
279 | if (writer && mi_lttng_writer_destroy(writer)) { | |
280 | /* Preserve original error code */ | |
281 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
282 | } | |
283 | ||
284 | /* Overwrite ret if command failed */ | |
285 | ret = command_ret ? -command_ret : ret; | |
286 | ||
c864d6d7 JG |
287 | poptFreeContext(pc); |
288 | return ret; | |
289 | } |