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.
26 #include <common/mi-lttng.h>
28 #include "../command.h"
29 #include <lttng/save.h>
31 static char *opt_output_path
;
33 static int opt_save_all
;
41 static struct poptOption save_opts
[] = {
42 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
43 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
44 {"all", 'a', POPT_ARG_NONE
, 0, OPT_ALL
, 0, 0},
45 {"output-path", 'o', POPT_ARG_STRING
, &opt_output_path
, 0, 0, 0},
46 {"force", 'f', POPT_ARG_NONE
, 0, OPT_FORCE
, 0, 0},
50 static struct mi_writer
*writer
;
55 static void usage(FILE *ofp
)
57 fprintf(ofp
, "usage: lttng save [OPTIONS] [SESSION]\n");
59 fprintf(ofp
, "Options:\n");
60 fprintf(ofp
, " -h, --help Show this help\n");
61 fprintf(ofp
, " -a, --all Save all sessions (default)\n");
62 fprintf(ofp
, " -o, --output-path Output path of the session configuration(s)\n");
63 fprintf(ofp
, " -f, --force Overwrite existing session configuration(s)\n");
66 static int mi_partial_session(const char *session_name
)
72 /* Open session element */
73 ret
= mi_lttng_writer_open_element(writer
, config_element_session
);
78 ret
= mi_lttng_writer_write_element_string(writer
, config_element_name
,
84 /* Closing session element */
85 ret
= mi_lttng_writer_close_element(writer
);
91 * Mi print of save command
93 static int mi_save_print(const char *session_name
)
99 /* We use a wildcard to represent all sessions */
103 /* Print save element */
104 ret
= mi_lttng_writer_open_element(writer
, mi_lttng_element_save
);
109 /* Print session element */
110 ret
= mi_partial_session(session_name
);
116 if (opt_output_path
) {
117 ret
= mi_lttng_writer_write_element_string(writer
, config_element_path
,
124 /* Close save element */
125 ret
= mi_lttng_writer_close_element(writer
);
131 * The 'save <options>' first level command
133 int cmd_save(int argc
, const char **argv
)
135 int ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
, success
;
137 const char *session_name
= NULL
;
139 struct lttng_save_session_attr
*attr
;
141 pc
= poptGetContext(NULL
, argc
, argv
, save_opts
, 0);
142 poptReadDefaultConfig(pc
, 0);
144 while ((opt
= poptGetNextOpt(pc
)) != -1) {
163 session_name
= poptGetArg(pc
);
165 DBG2("Session name: %s", session_name
);
167 /* default to opt_save_all */
172 attr
= lttng_save_session_attr_create();
178 if (lttng_save_session_attr_set_session_name(attr
, session_name
)) {
183 if (lttng_save_session_attr_set_overwrite(attr
, opt_force
)) {
188 if (lttng_save_session_attr_set_output_url(attr
, opt_output_path
)) {
195 writer
= mi_lttng_writer_create(fileno(stdout
), lttng_opt_mi
);
197 ret
= -LTTNG_ERR_NOMEM
;
201 /* Open command element */
202 ret
= mi_lttng_writer_command_open(writer
,
203 mi_lttng_element_command_save
);
209 /* Open output element */
210 ret
= mi_lttng_writer_open_element(writer
,
211 mi_lttng_element_command_output
);
218 command_ret
= lttng_save_session(attr
);
219 if (command_ret
< 0) {
220 ERR("%s", lttng_strerror(command_ret
));
223 /* Inform the user of what just happened on success. */
224 if (session_name
&& opt_output_path
) {
225 MSG("Session %s saved successfully in %s.", session_name
,
227 } else if (session_name
&& !opt_output_path
) {
228 MSG("Session %s saved successfully.", session_name
);
229 } else if (!session_name
&& opt_output_path
) {
230 MSG("All sessions have been saved successfully in %s.",
233 MSG("All sessions have been saved successfully.");
238 /* Mi Printing and closing */
241 ret
= mi_save_print(session_name
);
247 /* Close output element */
248 ret
= mi_lttng_writer_close_element(writer
);
255 ret
= mi_lttng_writer_write_element_bool(writer
,
256 mi_lttng_element_command_success
, success
);
262 /* Command element close */
263 ret
= mi_lttng_writer_command_close(writer
);
270 lttng_save_session_attr_destroy(attr
);
273 if (writer
&& mi_lttng_writer_destroy(writer
)) {
274 /* Preserve original error code */
275 ret
= ret
? ret
: -LTTNG_ERR_MI_IO_FAIL
;
278 /* Overwrite ret if command failed */
279 ret
= command_ret
? -command_ret
: ret
;