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d68c9a04 JD |
1 | /* |
2 | * Copyright (C) 2017 - Julien Desfossez <jdesfossez@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 _LGPL_SOURCE | |
19 | #include <popt.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
26 | #include <inttypes.h> | |
27 | #include <ctype.h> | |
28 | #include <assert.h> | |
29 | ||
30 | #include <common/sessiond-comm/sessiond-comm.h> | |
31 | #include <common/mi-lttng.h> | |
32 | ||
33 | #include "../command.h" | |
34 | #include <lttng/rotation.h> | |
dd73d57b | 35 | #include <lttng/location.h> |
d68c9a04 JD |
36 | |
37 | static char *opt_session_name; | |
38 | static int opt_no_wait; | |
39 | static struct mi_writer *writer; | |
40 | ||
3ae5c539 JD |
41 | #ifdef LTTNG_EMBED_HELP |
42 | static const char help_msg[] = | |
43 | #include <lttng-rotate.1.h> | |
44 | ; | |
45 | #endif | |
46 | ||
d68c9a04 JD |
47 | enum { |
48 | OPT_HELP = 1, | |
49 | OPT_LIST_OPTIONS, | |
50 | }; | |
51 | ||
52 | static struct poptOption long_options[] = { | |
53 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
54 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
55 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
56 | {"no-wait", 'n', POPT_ARG_VAL, &opt_no_wait, 1, 0, 0}, | |
57 | {0, 0, 0, 0, 0, 0, 0} | |
58 | }; | |
59 | ||
dd73d57b JG |
60 | static int output_trace_archive_location( |
61 | const struct lttng_trace_archive_location *location, | |
62 | const char *session_name) | |
63 | { | |
64 | int ret = 0; | |
65 | enum lttng_trace_archive_location_type location_type; | |
66 | enum lttng_trace_archive_location_status status; | |
67 | bool printed_location = false; | |
68 | ||
69 | location_type = lttng_trace_archive_location_get_type(location); | |
70 | ||
71 | _MSG("Trace chunk archive for session %s is now readable", | |
72 | session_name); | |
73 | switch (location_type) { | |
74 | case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_LOCAL: | |
75 | { | |
76 | const char *absolute_path; | |
77 | ||
78 | status = lttng_trace_archive_location_local_get_absolute_path( | |
79 | location, &absolute_path); | |
80 | if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) { | |
81 | ret = -1; | |
82 | goto end; | |
83 | } | |
84 | MSG(" at %s", absolute_path); | |
dd73d57b JG |
85 | printed_location = true; |
86 | break; | |
87 | } | |
88 | case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_RELAY: | |
89 | { | |
90 | uint16_t control_port, data_port; | |
91 | const char *host, *relative_path, *protocol_str; | |
92 | enum lttng_trace_archive_location_relay_protocol_type protocol; | |
93 | ||
94 | /* Fetch all relay location parameters. */ | |
95 | status = lttng_trace_archive_location_relay_get_protocol_type( | |
96 | location, &protocol); | |
97 | if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) { | |
98 | ret = -1; | |
99 | goto end; | |
100 | } | |
101 | ||
102 | status = lttng_trace_archive_location_relay_get_host( | |
103 | location, &host); | |
104 | if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) { | |
105 | ret = -1; | |
106 | goto end; | |
107 | } | |
108 | ||
109 | status = lttng_trace_archive_location_relay_get_control_port( | |
110 | location, &control_port); | |
111 | if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) { | |
112 | ret = -1; | |
113 | goto end; | |
114 | } | |
115 | ||
116 | status = lttng_trace_archive_location_relay_get_data_port( | |
117 | location, &data_port); | |
118 | if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) { | |
119 | ret = -1; | |
120 | goto end; | |
121 | } | |
122 | ||
123 | status = lttng_trace_archive_location_relay_get_relative_path( | |
124 | location, &relative_path); | |
125 | if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) { | |
126 | ret = -1; | |
127 | goto end; | |
128 | } | |
129 | ||
130 | switch (protocol) { | |
131 | case LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP: | |
132 | protocol_str = "tcp"; | |
133 | break; | |
134 | default: | |
135 | protocol_str = "unknown"; | |
136 | break; | |
137 | } | |
138 | ||
139 | MSG(" on relay %s://%s/%s [control port %" PRIu16 ", data port %" | |
140 | PRIu16 "]", protocol_str, host, | |
141 | relative_path, control_port, data_port); | |
142 | printed_location = true; | |
dd73d57b JG |
143 | break; |
144 | } | |
145 | default: | |
146 | break; | |
147 | } | |
148 | end: | |
149 | if (!printed_location) { | |
150 | MSG(" at an unknown location"); | |
151 | } | |
152 | return ret; | |
153 | } | |
154 | ||
d68c9a04 JD |
155 | static int rotate_tracing(char *session_name) |
156 | { | |
157 | int ret; | |
91c4d516 | 158 | enum cmd_error_code cmd_ret = CMD_SUCCESS; |
d68c9a04 JD |
159 | struct lttng_rotation_handle *handle = NULL; |
160 | enum lttng_rotation_status rotation_status; | |
161 | enum lttng_rotation_state rotation_state = LTTNG_ROTATION_STATE_ONGOING; | |
91c4d516 JG |
162 | const struct lttng_trace_archive_location *location = NULL; |
163 | bool print_location = true; | |
d68c9a04 JD |
164 | |
165 | DBG("Rotating the output files of session %s", session_name); | |
166 | ||
dbd512ea | 167 | ret = lttng_rotate_session(session_name, NULL, &handle); |
d68c9a04 JD |
168 | if (ret < 0) { |
169 | switch (-ret) { | |
170 | case LTTNG_ERR_SESSION_NOT_STARTED: | |
171 | WARN("Tracing session %s not started yet", session_name); | |
91c4d516 JG |
172 | cmd_ret = CMD_WARNING; |
173 | goto end; | |
d68c9a04 JD |
174 | default: |
175 | ERR("%s", lttng_strerror(ret)); | |
91c4d516 | 176 | goto error; |
d68c9a04 | 177 | } |
91c4d516 JG |
178 | } |
179 | ||
180 | if (opt_no_wait) { | |
181 | rotation_state = LTTNG_ROTATION_STATE_ONGOING; | |
182 | goto skip_wait; | |
183 | } | |
184 | ||
185 | _MSG("Waiting for rotation to complete"); | |
186 | ret = fflush(stdout); | |
187 | if (ret) { | |
188 | PERROR("fflush"); | |
d68c9a04 JD |
189 | goto error; |
190 | } | |
191 | ||
91c4d516 JG |
192 | do { |
193 | rotation_status = lttng_rotation_handle_get_state(handle, | |
194 | &rotation_state); | |
195 | if (rotation_status != LTTNG_ROTATION_STATUS_OK) { | |
196 | ERR("Failed to query the state of the rotation."); | |
d68c9a04 JD |
197 | goto error; |
198 | } | |
199 | ||
91c4d516 JG |
200 | if (rotation_state == LTTNG_ROTATION_STATE_ONGOING) { |
201 | ret = usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME); | |
202 | if (ret) { | |
203 | PERROR("usleep"); | |
d68c9a04 JD |
204 | goto error; |
205 | } | |
91c4d516 | 206 | _MSG("."); |
d68c9a04 | 207 | |
91c4d516 JG |
208 | ret = fflush(stdout); |
209 | if (ret) { | |
210 | PERROR("fflush"); | |
211 | goto error; | |
d68c9a04 | 212 | } |
91c4d516 JG |
213 | } |
214 | } while (rotation_state == LTTNG_ROTATION_STATE_ONGOING); | |
215 | MSG(""); | |
d68c9a04 | 216 | |
91c4d516 | 217 | skip_wait: |
d68c9a04 JD |
218 | switch (rotation_state) { |
219 | case LTTNG_ROTATION_STATE_COMPLETED: | |
dd73d57b JG |
220 | rotation_status = lttng_rotation_handle_get_archive_location( |
221 | handle, &location); | |
d68c9a04 | 222 | if (rotation_status != LTTNG_ROTATION_STATUS_OK) { |
91c4d516 JG |
223 | ERR("Failed to retrieve the rotation's completed chunk archive location."); |
224 | cmd_ret = CMD_ERROR; | |
d68c9a04 | 225 | } |
91c4d516 | 226 | break; |
d68c9a04 | 227 | case LTTNG_ROTATION_STATE_EXPIRED: |
91c4d516 JG |
228 | break; |
229 | case LTTNG_ROTATION_STATE_ERROR: | |
230 | ERR("Failed to retrieve rotation state."); | |
231 | print_location = false; | |
232 | goto error; | |
233 | case LTTNG_ROTATION_STATE_ONGOING: | |
234 | MSG("Rotation ongoing for session %s", session_name); | |
235 | print_location = false; | |
236 | break; | |
d68c9a04 | 237 | default: |
91c4d516 JG |
238 | ERR("Unexpected rotation state encountered."); |
239 | print_location = false; | |
d68c9a04 JD |
240 | goto error; |
241 | } | |
242 | ||
91c4d516 JG |
243 | if (!lttng_opt_mi && print_location) { |
244 | ret = output_trace_archive_location(location, | |
245 | session_name); | |
246 | } else if (lttng_opt_mi) { | |
247 | ret = mi_lttng_rotate(writer, session_name, rotation_state, | |
248 | location); | |
249 | } | |
250 | ||
251 | if (ret < 0) { | |
252 | cmd_ret = CMD_ERROR; | |
253 | } | |
254 | ||
d68c9a04 JD |
255 | end: |
256 | lttng_rotation_handle_destroy(handle); | |
91c4d516 JG |
257 | return cmd_ret; |
258 | error: | |
259 | cmd_ret = CMD_ERROR; | |
260 | goto end; | |
d68c9a04 JD |
261 | } |
262 | ||
263 | /* | |
264 | * cmd_rotate | |
265 | * | |
266 | * The 'rotate <options>' first level command | |
267 | */ | |
268 | int cmd_rotate(int argc, const char **argv) | |
269 | { | |
91c4d516 JG |
270 | int opt, ret; |
271 | enum cmd_error_code cmd_ret = CMD_SUCCESS; | |
d68c9a04 JD |
272 | int popt_ret; |
273 | static poptContext pc; | |
274 | char *session_name = NULL; | |
275 | bool free_session_name = false; | |
276 | ||
277 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
278 | popt_ret = poptReadDefaultConfig(pc, 0); | |
279 | if (popt_ret) { | |
d68c9a04 | 280 | ERR("poptReadDefaultConfig"); |
91c4d516 | 281 | goto error; |
d68c9a04 JD |
282 | } |
283 | ||
284 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
285 | switch (opt) { | |
286 | case OPT_HELP: | |
287 | SHOW_HELP(); | |
288 | goto end; | |
289 | case OPT_LIST_OPTIONS: | |
290 | list_cmd_options(stdout, long_options); | |
291 | goto end; | |
292 | default: | |
91c4d516 | 293 | cmd_ret = CMD_UNDEFINED; |
d68c9a04 JD |
294 | goto end; |
295 | } | |
296 | } | |
297 | ||
298 | opt_session_name = (char*) poptGetArg(pc); | |
299 | ||
300 | if (!opt_session_name) { | |
301 | session_name = get_session_name(); | |
302 | if (!session_name) { | |
91c4d516 | 303 | goto error; |
d68c9a04 JD |
304 | } |
305 | free_session_name = true; | |
306 | } else { | |
307 | session_name = opt_session_name; | |
308 | } | |
309 | ||
310 | /* Mi check */ | |
311 | if (lttng_opt_mi) { | |
312 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
313 | if (!writer) { | |
91c4d516 | 314 | goto error; |
d68c9a04 JD |
315 | } |
316 | ||
317 | /* Open rotate command */ | |
318 | ret = mi_lttng_writer_command_open(writer, | |
319 | mi_lttng_element_command_rotate); | |
320 | if (ret) { | |
91c4d516 | 321 | goto error; |
d68c9a04 JD |
322 | } |
323 | ||
324 | /* Open output element */ | |
325 | ret = mi_lttng_writer_open_element(writer, | |
326 | mi_lttng_element_command_output); | |
327 | if (ret) { | |
91c4d516 | 328 | goto error; |
d68c9a04 | 329 | } |
d68c9a04 JD |
330 | } |
331 | ||
91c4d516 | 332 | cmd_ret = rotate_tracing(session_name); |
d68c9a04 JD |
333 | |
334 | /* Mi closing */ | |
335 | if (lttng_opt_mi) { | |
66ea93b1 | 336 | /* Close output element */ |
d68c9a04 JD |
337 | ret = mi_lttng_writer_close_element(writer); |
338 | if (ret) { | |
91c4d516 | 339 | goto error; |
d68c9a04 JD |
340 | } |
341 | /* Success ? */ | |
342 | ret = mi_lttng_writer_write_element_bool(writer, | |
91c4d516 JG |
343 | mi_lttng_element_command_success, |
344 | cmd_ret == CMD_SUCCESS); | |
d68c9a04 | 345 | if (ret) { |
91c4d516 | 346 | goto error; |
d68c9a04 JD |
347 | } |
348 | ||
349 | /* Command element close */ | |
350 | ret = mi_lttng_writer_command_close(writer); | |
351 | if (ret) { | |
91c4d516 | 352 | goto error; |
d68c9a04 JD |
353 | } |
354 | } | |
355 | ||
d68c9a04 JD |
356 | /* Mi clean-up */ |
357 | if (writer && mi_lttng_writer_destroy(writer)) { | |
91c4d516 | 358 | goto error; |
d68c9a04 | 359 | } |
91c4d516 | 360 | end: |
d68c9a04 JD |
361 | poptFreeContext(pc); |
362 | if (free_session_name) { | |
363 | free(session_name); | |
364 | } | |
91c4d516 JG |
365 | |
366 | return cmd_ret; | |
367 | error: | |
368 | cmd_ret = CMD_ERROR; | |
369 | goto end; | |
d68c9a04 | 370 | } |