2 * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
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.
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.
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.
27 #include <common/mi-lttng.h>
29 #include "../command.h"
30 #include <lttng/save.h>
32 static char *opt_output_path
;
34 static int opt_save_all
;
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},
49 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
53 static struct mi_writer
*writer
;
58 static void usage(FILE *ofp
)
60 fprintf(ofp
, "usage: lttng save [OPTIONS] [SESSION]\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");
69 static int mi_partial_session(const char *session_name
)
75 /* Open session element */
76 ret
= mi_lttng_writer_open_element(writer
, config_element_session
);
81 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
87 /* Closing session element */
88 ret
= mi_lttng_writer_close_element(writer
);
94 * Mi print of save command
96 static int mi_save_print(const char *session_name
)
102 /* We use a wildcard to represent all sessions */
106 /* Print save element */
107 ret
= mi_lttng_writer_open_element(writer
, mi_lttng_element_save
);
112 /* Print session element */
113 ret
= mi_partial_session(session_name
);
119 if (opt_output_path
) {
120 ret
= mi_lttng_writer_write_element_string(writer
, config_element_path
,
127 /* Close save element */
128 ret
= mi_lttng_writer_close_element(writer
);
134 * The 'save <options>' first level command
136 int cmd_save(int argc
, const char **argv
)
138 int ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
, success
;
140 const char *session_name
= NULL
;
142 struct lttng_save_session_attr
*attr
;
144 pc
= poptGetContext(NULL
, argc
, argv
, save_opts
, 0);
145 poptReadDefaultConfig(pc
, 0);
147 while ((opt
= poptGetNextOpt(pc
)) != -1) {
158 case OPT_LIST_OPTIONS
:
159 list_cmd_options(stdout
, save_opts
);
169 session_name
= poptGetArg(pc
);
171 DBG2("Session name: %s", session_name
);
173 /* default to opt_save_all */
178 attr
= lttng_save_session_attr_create();
184 if (lttng_save_session_attr_set_session_name(attr
, session_name
)) {
189 if (lttng_save_session_attr_set_overwrite(attr
, opt_force
)) {
194 if (lttng_save_session_attr_set_output_url(attr
, opt_output_path
)) {
201 writer
= mi_lttng_writer_create(fileno(stdout
), lttng_opt_mi
);
203 ret
= -LTTNG_ERR_NOMEM
;
207 /* Open command element */
208 ret
= mi_lttng_writer_command_open(writer
,
209 mi_lttng_element_command_save
);
215 /* Open output element */
216 ret
= mi_lttng_writer_open_element(writer
,
217 mi_lttng_element_command_output
);
224 command_ret
= lttng_save_session(attr
);
225 if (command_ret
< 0) {
226 ERR("%s", lttng_strerror(command_ret
));
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
,
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.",
239 MSG("All sessions have been saved successfully.");
244 /* Mi Printing and closing */
247 ret
= mi_save_print(session_name
);
253 /* Close output element */
254 ret
= mi_lttng_writer_close_element(writer
);
261 ret
= mi_lttng_writer_write_element_bool(writer
,
262 mi_lttng_element_command_success
, success
);
268 /* Command element close */
269 ret
= mi_lttng_writer_command_close(writer
);
276 lttng_save_session_attr_destroy(attr
);
279 if (writer
&& mi_lttng_writer_destroy(writer
)) {
280 /* Preserve original error code */
281 ret
= ret
? ret
: -LTTNG_ERR_MI_IO_FAIL
;
284 /* Overwrite ret if command failed */
285 ret
= command_ret
? -command_ret
: ret
;