2 * Copyright (C) 2015 - Julien Desfossez <jdesfossez@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"
31 static char *opt_session_name
;
32 static char *session_name
= NULL
;
34 static int regenerate_metadata(int argc
, const char **argv
);
35 static int regenerate_statedump(int argc
, const char **argv
);
43 static struct mi_writer
*writer
;
45 static struct poptOption long_options
[] = {
46 /* { longName, shortName, argInfo, argPtr, value, descrip, argDesc, } */
47 { "help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0, },
48 { "session", 's', POPT_ARG_STRING
, &opt_session_name
, 0, 0, 0},
49 { "list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, 0, 0, },
50 { "list-commands", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_COMMANDS
},
51 { 0, 0, 0, 0, 0, 0, 0, },
54 static struct cmd_struct actions
[] = {
55 { "metadata", regenerate_metadata
},
56 { "statedump", regenerate_statedump
},
57 { NULL
, NULL
} /* Array closure */
61 * Count and return the number of arguments in argv.
63 static int count_arguments(const char **argv
)
69 while (argv
[i
] != NULL
) {
76 static int regenerate_metadata(int argc
, const char **argv
)
81 ret
= -LTTNG_ERR_INVALID
;
84 ret
= lttng_regenerate_metadata(session_name
);
86 MSG("Metadata successfully regenerated for session %s", session_name
);
93 static int regenerate_statedump(int argc
, const char **argv
)
98 ret
= -LTTNG_ERR_INVALID
;
101 ret
= lttng_regenerate_statedump(session_name
);
103 MSG("State dump successfully regenerated for session %s", session_name
);
110 static int handle_command(const char **argv
)
112 struct cmd_struct
*cmd
;
113 int ret
= CMD_SUCCESS
, i
= 0, argc
, command_ret
= CMD_SUCCESS
;
117 command_ret
= CMD_ERROR
;
121 argc
= count_arguments(argv
);
124 while (cmd
->func
!= NULL
) {
126 if (strcmp(argv
[0], cmd
->name
) == 0) {
129 ret
= mi_lttng_writer_open_element(writer
,
130 mi_lttng_element_command_regenerate_action
);
136 /* Name of the action */
137 ret
= mi_lttng_writer_write_element_string(writer
,
138 config_element_name
, argv
[0]);
144 command_ret
= cmd
->func(argc
, argv
);
146 /* Close output and action element */
147 ret
= mi_lttng_writer_close_element(writer
);
162 /* Overwrite ret if an error occurred in cmd->func() */
163 ret
= command_ret
? command_ret
: ret
;
168 * regenerate command handling.
170 int cmd_regenerate(int argc
, const char **argv
)
172 int opt
, ret
= CMD_SUCCESS
, command_ret
= CMD_SUCCESS
, success
= 1;
173 static poptContext pc
;
181 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
182 poptReadDefaultConfig(pc
, 0);
185 writer
= mi_lttng_writer_create(fileno(stdout
), lttng_opt_mi
);
187 ret
= -LTTNG_ERR_NOMEM
;
190 /* Open command element */
191 ret
= mi_lttng_writer_command_open(writer
,
192 mi_lttng_element_command_regenerate
);
198 /* Open output element */
199 ret
= mi_lttng_writer_open_element(writer
,
200 mi_lttng_element_command_output
);
207 while ((opt
= poptGetNextOpt(pc
)) != -1) {
212 case OPT_LIST_OPTIONS
:
213 list_cmd_options(stdout
, long_options
);
215 case OPT_LIST_COMMANDS
:
216 list_commands(actions
, stdout
);
225 if (!opt_session_name
) {
226 session_name
= get_session_name();
227 if (session_name
== NULL
) {
232 session_name
= opt_session_name
;
235 command_ret
= handle_command(poptGetArgs(pc
));
237 switch (-command_ret
) {
239 ERR("%s", lttng_strerror(command_ret
));
246 /* Close output element */
247 ret
= mi_lttng_writer_close_element(writer
);
254 ret
= mi_lttng_writer_write_element_bool(writer
,
255 mi_lttng_element_command_success
, success
);
261 /* Command element close */
262 ret
= mi_lttng_writer_command_close(writer
);
271 if (writer
&& mi_lttng_writer_destroy(writer
)) {
272 /* Preserve original error code */
273 ret
= ret
? ret
: -LTTNG_ERR_MI_IO_FAIL
;
276 if (!opt_session_name
) {
280 /* Overwrite ret if an error occurred during handle_command() */
281 ret
= command_ret
? command_ret
: ret
;