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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 | ||
18 | #define _GNU_SOURCE | |
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> |
8c42d845 | 27 | #include <common/config/config.h> |
1734c658 | 28 | |
8c42d845 JG |
29 | #include "../command.h" |
30 | ||
31 | static char *opt_input_path; | |
8c42d845 JG |
32 | static int opt_force; |
33 | static int opt_load_all; | |
34 | ||
11143783 DG |
35 | static const char *session_name; |
36 | ||
8c42d845 JG |
37 | enum { |
38 | OPT_HELP = 1, | |
39 | OPT_ALL, | |
40 | OPT_FORCE, | |
13a810d5 | 41 | OPT_LIST_OPTIONS, |
8c42d845 JG |
42 | }; |
43 | ||
1734c658 JRJ |
44 | static struct mi_writer *writer; |
45 | ||
8c42d845 JG |
46 | static struct poptOption load_opts[] = { |
47 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
48 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
49 | {"all", 'a', POPT_ARG_NONE, 0, OPT_ALL, 0, 0}, | |
8c42d845 JG |
50 | {"input-path", 'i', POPT_ARG_STRING, &opt_input_path, 0, 0, 0}, |
51 | {"force", 'f', POPT_ARG_NONE, 0, OPT_FORCE, 0, 0}, | |
13a810d5 | 52 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
8c42d845 JG |
53 | {0, 0, 0, 0, 0, 0, 0} |
54 | }; | |
55 | ||
56 | /* | |
57 | * usage | |
58 | */ | |
59 | static void usage(FILE *ofp) | |
60 | { | |
11143783 | 61 | fprintf(ofp, "usage: lttng load [OPTIONS] [SESSION]\n"); |
8c42d845 JG |
62 | fprintf(ofp, "\n"); |
63 | fprintf(ofp, "Options:\n"); | |
d7c6b799 DG |
64 | fprintf(ofp, " -h, --help Show this help\n"); |
65 | fprintf(ofp, " -a, --all Load all sessions (default)\n"); | |
66 | fprintf(ofp, " -i, --input-path PATH Input path of the session file(s).\n"); | |
67 | fprintf(ofp, " If a directory, load all files in it\n"); | |
68 | fprintf(ofp, " else try to load the given file.\n"); | |
69 | fprintf(ofp, " -f, --force Override existing session(s).\n"); | |
70 | fprintf(ofp, " This will destroy existing session(s)\n"); | |
71 | fprintf(ofp, " before creating new one(s).\n"); | |
8c42d845 JG |
72 | } |
73 | ||
1734c658 JRJ |
74 | static int mi_partial_session(const char *session_name) |
75 | { | |
76 | int ret; | |
77 | assert(writer); | |
78 | assert(session_name); | |
79 | ||
80 | /* Open session element */ | |
81 | ret = mi_lttng_writer_open_element(writer, config_element_session); | |
82 | if (ret) { | |
83 | goto end; | |
84 | } | |
85 | ||
86 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
87 | session_name); | |
88 | if (ret) { | |
89 | goto end; | |
90 | } | |
91 | ||
92 | /* Closing session element */ | |
93 | ret = mi_lttng_writer_close_element(writer); | |
94 | end: | |
95 | return ret; | |
96 | } | |
97 | ||
98 | /* | |
99 | * Mi print of load command | |
100 | */ | |
101 | static int mi_load_print(const char *session_name) | |
102 | { | |
103 | int ret; | |
104 | assert(writer); | |
105 | ||
106 | if (opt_load_all) { | |
107 | /* We use a wildcard to represent all sessions */ | |
108 | session_name = "*"; | |
109 | } | |
110 | ||
111 | /* Print load element */ | |
112 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_load); | |
113 | if (ret) { | |
114 | goto end; | |
115 | } | |
116 | ||
117 | /* Print session element */ | |
118 | ret = mi_partial_session(session_name); | |
119 | if (ret) { | |
120 | goto end; | |
121 | } | |
122 | ||
123 | /* Path element */ | |
124 | if (opt_input_path) { | |
125 | ret = mi_lttng_writer_write_element_string(writer, config_element_path, | |
126 | opt_input_path); | |
127 | if (ret) { | |
128 | goto end; | |
129 | } | |
130 | } | |
131 | ||
132 | /* Close load element */ | |
133 | ret = mi_lttng_writer_close_element(writer); | |
134 | ||
135 | end: | |
136 | return ret; | |
137 | } | |
138 | ||
8c42d845 JG |
139 | /* |
140 | * The 'load <options>' first level command | |
141 | */ | |
142 | int cmd_load(int argc, const char **argv) | |
143 | { | |
1734c658 | 144 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success; |
8c42d845 JG |
145 | int opt; |
146 | poptContext pc; | |
147 | ||
148 | pc = poptGetContext(NULL, argc, argv, load_opts, 0); | |
149 | poptReadDefaultConfig(pc, 0); | |
150 | ||
151 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
152 | switch (opt) { | |
153 | case OPT_HELP: | |
154 | usage(stdout); | |
155 | goto end; | |
156 | case OPT_ALL: | |
157 | opt_load_all = 1; | |
158 | break; | |
13a810d5 DG |
159 | case OPT_LIST_OPTIONS: |
160 | list_cmd_options(stdout, load_opts); | |
161 | goto end; | |
8c42d845 JG |
162 | case OPT_FORCE: |
163 | opt_force = 1; | |
164 | break; | |
165 | default: | |
166 | usage(stderr); | |
167 | ret = CMD_UNDEFINED; | |
168 | goto end; | |
169 | } | |
170 | } | |
171 | ||
11143783 DG |
172 | if (!opt_load_all) { |
173 | session_name = poptGetArg(pc); | |
732b768a DG |
174 | if (session_name) { |
175 | DBG2("Loading session name: %s", session_name); | |
1734c658 JRJ |
176 | } else { |
177 | /* Default to load_all */ | |
178 | opt_load_all = 1; | |
11143783 | 179 | } |
8c42d845 JG |
180 | } |
181 | ||
1734c658 JRJ |
182 | /* Mi check */ |
183 | if (lttng_opt_mi) { | |
184 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
185 | if (!writer) { | |
186 | ret = -LTTNG_ERR_NOMEM; | |
187 | goto end; | |
188 | } | |
189 | ||
190 | /* Open command element */ | |
191 | ret = mi_lttng_writer_command_open(writer, | |
192 | mi_lttng_element_command_load); | |
193 | if (ret) { | |
194 | ret = CMD_ERROR; | |
195 | goto end; | |
196 | } | |
197 | ||
198 | /* Open output element */ | |
199 | ret = mi_lttng_writer_open_element(writer, | |
200 | mi_lttng_element_command_output); | |
201 | if (ret) { | |
202 | ret = CMD_ERROR; | |
203 | goto end; | |
204 | } | |
205 | } | |
206 | ||
207 | command_ret = config_load_session(opt_input_path, session_name, opt_force, 0); | |
208 | if (command_ret) { | |
209 | ERR("%s", lttng_strerror(command_ret)); | |
210 | success = 0; | |
279d6193 DG |
211 | } else { |
212 | if (opt_load_all) { | |
213 | MSG("All sessions have been loaded successfully"); | |
732b768a | 214 | } else if (session_name) { |
8e525b95 DG |
215 | ret = config_init((char *)session_name); |
216 | if (ret < 0) { | |
217 | ret = CMD_WARNING; | |
218 | } | |
279d6193 | 219 | MSG("Session %s has been loaded successfully", session_name); |
732b768a DG |
220 | } else { |
221 | MSG("Session has been loaded successfully"); | |
279d6193 | 222 | } |
1734c658 JRJ |
223 | success = 1; |
224 | } | |
225 | ||
226 | /* Mi Printing and closing */ | |
227 | if (lttng_opt_mi) { | |
228 | /* Mi print */ | |
229 | ret = mi_load_print(session_name); | |
230 | if (ret) { | |
231 | ret = CMD_ERROR; | |
232 | goto end; | |
233 | } | |
234 | ||
235 | /* Close output element */ | |
236 | ret = mi_lttng_writer_close_element(writer); | |
237 | if (ret) { | |
238 | ret = CMD_ERROR; | |
239 | goto end; | |
240 | } | |
241 | ||
242 | /* Success ? */ | |
243 | ret = mi_lttng_writer_write_element_bool(writer, | |
244 | mi_lttng_element_command_success, success); | |
245 | if (ret) { | |
246 | ret = CMD_ERROR; | |
247 | goto end; | |
248 | } | |
249 | ||
250 | /* Command element close */ | |
251 | ret = mi_lttng_writer_command_close(writer); | |
252 | if (ret) { | |
253 | ret = CMD_ERROR; | |
254 | goto end; | |
255 | } | |
8c42d845 JG |
256 | } |
257 | end: | |
1734c658 JRJ |
258 | if (writer && mi_lttng_writer_destroy(writer)) { |
259 | /* Preserve original error code */ | |
260 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
261 | } | |
262 | ||
263 | /* Overwrite ret if the was an error with the load command */ | |
264 | ret = command_ret ? -command_ret : ret; | |
265 | ||
8c42d845 JG |
266 | poptFreeContext(pc); |
267 | return ret; | |
268 | } |