Commit | Line | Data |
---|---|---|
bfb2ec6a SM |
1 | /* |
2 | * Copyright (C) 2019 Simon Marchi <simon.marchi@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
c9e313bc SM |
8 | #include <common/error.hpp> |
9 | #include <common/macros.hpp> | |
10 | #include <common/mi-lttng.hpp> | |
11 | #include <lttng/action/action-internal.hpp> | |
12 | #include <lttng/action/rate-policy-internal.hpp> | |
7f4d5b07 | 13 | #include <lttng/action/rate-policy.h> |
c9e313bc | 14 | #include <lttng/action/rotate-session-internal.hpp> |
bfb2ec6a SM |
15 | #include <lttng/action/rotate-session.h> |
16 | ||
17 | #define IS_ROTATE_SESSION_ACTION(action) \ | |
17182cfd | 18 | (lttng_action_get_type(action) == LTTNG_ACTION_TYPE_ROTATE_SESSION) |
bfb2ec6a | 19 | |
f1494934 | 20 | namespace { |
bfb2ec6a SM |
21 | struct lttng_action_rotate_session { |
22 | struct lttng_action parent; | |
23 | ||
24 | /* Owned by this. */ | |
25 | char *session_name; | |
7f4d5b07 | 26 | struct lttng_rate_policy *policy; |
bfb2ec6a SM |
27 | }; |
28 | ||
29 | struct lttng_action_rotate_session_comm { | |
30 | /* Includes the trailing \0. */ | |
31 | uint32_t session_name_len; | |
32 | ||
33 | /* | |
34 | * Variable data: | |
35 | * | |
36 | * - session name (null terminated) | |
c2c58434 | 37 | * - policy |
bfb2ec6a SM |
38 | */ |
39 | char data[]; | |
40 | } LTTNG_PACKED; | |
f1494934 | 41 | } /* namespace */ |
bfb2ec6a | 42 | |
7f4d5b07 JR |
43 | static const struct lttng_rate_policy * |
44 | lttng_action_rotate_session_internal_get_rate_policy( | |
2d57482c JR |
45 | const struct lttng_action *action); |
46 | ||
bfb2ec6a SM |
47 | static struct lttng_action_rotate_session *action_rotate_session_from_action( |
48 | struct lttng_action *action) | |
49 | { | |
a0377dfe | 50 | LTTNG_ASSERT(action); |
bfb2ec6a | 51 | |
0114db0e | 52 | return lttng::utils::container_of(action, <tng_action_rotate_session::parent); |
bfb2ec6a SM |
53 | } |
54 | ||
55 | static const struct lttng_action_rotate_session * | |
56 | action_rotate_session_from_action_const(const struct lttng_action *action) | |
57 | { | |
a0377dfe | 58 | LTTNG_ASSERT(action); |
bfb2ec6a | 59 | |
0114db0e | 60 | return lttng::utils::container_of(action, <tng_action_rotate_session::parent); |
bfb2ec6a SM |
61 | } |
62 | ||
63 | static bool lttng_action_rotate_session_validate(struct lttng_action *action) | |
64 | { | |
65 | bool valid; | |
66 | struct lttng_action_rotate_session *action_rotate_session; | |
67 | ||
68 | if (!action) { | |
69 | valid = false; | |
70 | goto end; | |
71 | } | |
72 | ||
73 | action_rotate_session = action_rotate_session_from_action(action); | |
74 | ||
75 | /* A non-empty session name is mandatory. */ | |
76 | if (!action_rotate_session->session_name || | |
77 | strlen(action_rotate_session->session_name) == 0) { | |
78 | valid = false; | |
79 | goto end; | |
80 | } | |
81 | ||
82 | valid = true; | |
83 | end: | |
84 | return valid; | |
85 | } | |
86 | ||
87 | static bool lttng_action_rotate_session_is_equal( | |
88 | const struct lttng_action *_a, const struct lttng_action *_b) | |
89 | { | |
90 | bool is_equal = false; | |
91 | const struct lttng_action_rotate_session *a, *b; | |
92 | ||
93 | a = action_rotate_session_from_action_const(_a); | |
94 | b = action_rotate_session_from_action_const(_b); | |
95 | ||
96 | /* Action is not valid if this is not true. */ | |
a0377dfe FD |
97 | LTTNG_ASSERT(a->session_name); |
98 | LTTNG_ASSERT(b->session_name); | |
bfb2ec6a SM |
99 | if (strcmp(a->session_name, b->session_name)) { |
100 | goto end; | |
101 | } | |
102 | ||
7f4d5b07 | 103 | is_equal = lttng_rate_policy_is_equal(a->policy, b->policy); |
bfb2ec6a SM |
104 | end: |
105 | return is_equal; | |
106 | } | |
107 | static int lttng_action_rotate_session_serialize( | |
c0a66c84 | 108 | struct lttng_action *action, struct lttng_payload *payload) |
bfb2ec6a SM |
109 | { |
110 | struct lttng_action_rotate_session *action_rotate_session; | |
111 | struct lttng_action_rotate_session_comm comm; | |
112 | size_t session_name_len; | |
113 | int ret; | |
114 | ||
a0377dfe FD |
115 | LTTNG_ASSERT(action); |
116 | LTTNG_ASSERT(payload); | |
bfb2ec6a SM |
117 | |
118 | action_rotate_session = action_rotate_session_from_action(action); | |
119 | ||
a0377dfe | 120 | LTTNG_ASSERT(action_rotate_session->session_name); |
bfb2ec6a SM |
121 | |
122 | DBG("Serializing rotate session action: session-name: %s", | |
123 | action_rotate_session->session_name); | |
124 | ||
125 | session_name_len = strlen(action_rotate_session->session_name) + 1; | |
126 | comm.session_name_len = session_name_len; | |
127 | ||
c0a66c84 JG |
128 | ret = lttng_dynamic_buffer_append( |
129 | &payload->buffer, &comm, sizeof(comm)); | |
bfb2ec6a SM |
130 | if (ret) { |
131 | ret = -1; | |
132 | goto end; | |
133 | } | |
134 | ||
c0a66c84 | 135 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
bfb2ec6a SM |
136 | action_rotate_session->session_name, session_name_len); |
137 | if (ret) { | |
138 | ret = -1; | |
139 | goto end; | |
140 | } | |
141 | ||
7f4d5b07 | 142 | ret = lttng_rate_policy_serialize( |
c2c58434 JR |
143 | action_rotate_session->policy, payload); |
144 | if (ret) { | |
145 | ret = -1; | |
146 | goto end; | |
147 | } | |
bfb2ec6a SM |
148 | end: |
149 | return ret; | |
150 | } | |
151 | ||
152 | static void lttng_action_rotate_session_destroy(struct lttng_action *action) | |
153 | { | |
154 | struct lttng_action_rotate_session *action_rotate_session; | |
155 | ||
156 | if (!action) { | |
157 | goto end; | |
158 | } | |
159 | ||
160 | action_rotate_session = action_rotate_session_from_action(action); | |
161 | ||
7f4d5b07 | 162 | lttng_rate_policy_destroy(action_rotate_session->policy); |
bfb2ec6a SM |
163 | free(action_rotate_session->session_name); |
164 | free(action_rotate_session); | |
165 | ||
166 | end: | |
167 | return; | |
168 | } | |
169 | ||
c0a66c84 JG |
170 | ssize_t lttng_action_rotate_session_create_from_payload( |
171 | struct lttng_payload_view *view, | |
bfb2ec6a SM |
172 | struct lttng_action **p_action) |
173 | { | |
c2c58434 | 174 | ssize_t consumed_len, ret; |
bfb2ec6a SM |
175 | const struct lttng_action_rotate_session_comm *comm; |
176 | const char *session_name; | |
177 | struct lttng_action *action; | |
178 | enum lttng_action_status status; | |
7f4d5b07 | 179 | struct lttng_rate_policy *policy = NULL; |
bfb2ec6a SM |
180 | |
181 | action = lttng_action_rotate_session_create(); | |
182 | if (!action) { | |
183 | consumed_len = -1; | |
184 | goto end; | |
185 | } | |
186 | ||
c0a66c84 | 187 | comm = (typeof(comm)) view->buffer.data; |
bfb2ec6a SM |
188 | session_name = (const char *) &comm->data; |
189 | ||
190 | if (!lttng_buffer_view_contains_string( | |
c0a66c84 | 191 | &view->buffer, session_name, comm->session_name_len)) { |
bfb2ec6a SM |
192 | consumed_len = -1; |
193 | goto end; | |
194 | } | |
c2c58434 JR |
195 | consumed_len = sizeof(*comm) + comm->session_name_len; |
196 | ||
7f4d5b07 | 197 | /* Rate policy. */ |
c2c58434 JR |
198 | { |
199 | struct lttng_payload_view policy_view = | |
200 | lttng_payload_view_from_view( | |
201 | view, consumed_len, -1); | |
7f4d5b07 | 202 | ret = lttng_rate_policy_create_from_payload( |
c2c58434 JR |
203 | &policy_view, &policy); |
204 | if (ret < 0) { | |
205 | consumed_len = -1; | |
206 | goto end; | |
207 | } | |
208 | consumed_len += ret; | |
209 | } | |
bfb2ec6a SM |
210 | |
211 | status = lttng_action_rotate_session_set_session_name( | |
212 | action, session_name); | |
213 | if (status != LTTNG_ACTION_STATUS_OK) { | |
214 | consumed_len = -1; | |
215 | goto end; | |
216 | } | |
217 | ||
a0377dfe | 218 | LTTNG_ASSERT(policy); |
7f4d5b07 | 219 | status = lttng_action_rotate_session_set_rate_policy(action, policy); |
c2c58434 JR |
220 | if (status != LTTNG_ACTION_STATUS_OK) { |
221 | consumed_len = -1; | |
222 | goto end; | |
223 | } | |
224 | ||
bfb2ec6a SM |
225 | *p_action = action; |
226 | action = NULL; | |
227 | ||
228 | end: | |
7f4d5b07 | 229 | lttng_rate_policy_destroy(policy); |
bfb2ec6a SM |
230 | lttng_action_rotate_session_destroy(action); |
231 | ||
232 | return consumed_len; | |
233 | } | |
234 | ||
6a751b95 JR |
235 | static enum lttng_error_code lttng_action_rotate_session_mi_serialize( |
236 | const struct lttng_action *action, struct mi_writer *writer) | |
237 | { | |
238 | int ret; | |
239 | enum lttng_error_code ret_code; | |
240 | enum lttng_action_status status; | |
241 | const char *session_name = NULL; | |
242 | const struct lttng_rate_policy *policy = NULL; | |
243 | ||
a0377dfe FD |
244 | LTTNG_ASSERT(action); |
245 | LTTNG_ASSERT(IS_ROTATE_SESSION_ACTION(action)); | |
6a751b95 JR |
246 | |
247 | status = lttng_action_rotate_session_get_session_name( | |
248 | action, &session_name); | |
a0377dfe FD |
249 | LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK); |
250 | LTTNG_ASSERT(session_name != NULL); | |
6a751b95 JR |
251 | |
252 | status = lttng_action_notify_get_rate_policy(action, &policy); | |
a0377dfe FD |
253 | LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK); |
254 | LTTNG_ASSERT(policy != NULL); | |
6a751b95 JR |
255 | |
256 | /* Open action rotate session element. */ | |
257 | ret = mi_lttng_writer_open_element( | |
258 | writer, mi_lttng_element_action_rotate_session); | |
259 | if (ret) { | |
260 | goto mi_error; | |
261 | } | |
262 | ||
263 | /* Session name. */ | |
264 | ret = mi_lttng_writer_write_element_string( | |
265 | writer, mi_lttng_element_session_name, session_name); | |
266 | if (ret) { | |
267 | goto mi_error; | |
268 | } | |
269 | ||
270 | /* Rate policy. */ | |
271 | ret_code = lttng_rate_policy_mi_serialize(policy, writer); | |
272 | if (ret_code != LTTNG_OK) { | |
273 | goto end; | |
274 | } | |
275 | ||
276 | /* Close action rotate session element. */ | |
277 | ret = mi_lttng_writer_close_element(writer); | |
278 | if (ret) { | |
279 | goto mi_error; | |
280 | } | |
281 | ||
282 | ret_code = LTTNG_OK; | |
283 | goto end; | |
284 | ||
285 | mi_error: | |
286 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
287 | end: | |
288 | return ret_code; | |
289 | } | |
290 | ||
bfb2ec6a SM |
291 | struct lttng_action *lttng_action_rotate_session_create(void) |
292 | { | |
64803277 | 293 | struct lttng_action_rotate_session *action_rotate = NULL; |
7f4d5b07 | 294 | struct lttng_rate_policy *policy = NULL; |
c2c58434 JR |
295 | enum lttng_action_status status; |
296 | ||
7f4d5b07 JR |
297 | /* Create a every N = 1 rate policy. */ |
298 | policy = lttng_rate_policy_every_n_create(1); | |
c2c58434 JR |
299 | if (!policy) { |
300 | goto end; | |
301 | } | |
bfb2ec6a | 302 | |
64803277 SM |
303 | action_rotate = zmalloc<lttng_action_rotate_session>(); |
304 | if (!action_rotate) { | |
bfb2ec6a SM |
305 | goto end; |
306 | } | |
307 | ||
64803277 SM |
308 | lttng_action_init(&action_rotate->parent, |
309 | LTTNG_ACTION_TYPE_ROTATE_SESSION, | |
bfb2ec6a SM |
310 | lttng_action_rotate_session_validate, |
311 | lttng_action_rotate_session_serialize, | |
312 | lttng_action_rotate_session_is_equal, | |
2d57482c | 313 | lttng_action_rotate_session_destroy, |
588c4b0d | 314 | lttng_action_rotate_session_internal_get_rate_policy, |
6a751b95 JR |
315 | lttng_action_generic_add_error_query_results, |
316 | lttng_action_rotate_session_mi_serialize); | |
bfb2ec6a | 317 | |
64803277 SM |
318 | status = lttng_action_rotate_session_set_rate_policy( |
319 | &action_rotate->parent, policy); | |
c2c58434 | 320 | if (status != LTTNG_ACTION_STATUS_OK) { |
64803277 SM |
321 | lttng_action_destroy(&action_rotate->parent); |
322 | action_rotate = NULL; | |
c2c58434 JR |
323 | goto end; |
324 | } | |
325 | ||
bfb2ec6a | 326 | end: |
7f4d5b07 | 327 | lttng_rate_policy_destroy(policy); |
64803277 | 328 | return action_rotate ? &action_rotate->parent : nullptr; |
bfb2ec6a SM |
329 | } |
330 | ||
331 | enum lttng_action_status lttng_action_rotate_session_set_session_name( | |
332 | struct lttng_action *action, const char *session_name) | |
333 | { | |
334 | struct lttng_action_rotate_session *action_rotate_session; | |
335 | enum lttng_action_status status; | |
336 | ||
337 | if (!action || !IS_ROTATE_SESSION_ACTION(action) || !session_name || | |
338 | strlen(session_name) == 0) { | |
339 | status = LTTNG_ACTION_STATUS_INVALID; | |
340 | goto end; | |
341 | } | |
342 | ||
343 | action_rotate_session = action_rotate_session_from_action(action); | |
344 | ||
345 | free(action_rotate_session->session_name); | |
346 | ||
347 | action_rotate_session->session_name = strdup(session_name); | |
348 | if (!action_rotate_session->session_name) { | |
349 | status = LTTNG_ACTION_STATUS_ERROR; | |
350 | goto end; | |
351 | } | |
352 | ||
353 | status = LTTNG_ACTION_STATUS_OK; | |
354 | end: | |
355 | return status; | |
356 | } | |
357 | ||
358 | enum lttng_action_status lttng_action_rotate_session_get_session_name( | |
359 | const struct lttng_action *action, const char **session_name) | |
360 | { | |
361 | const struct lttng_action_rotate_session *action_rotate_session; | |
362 | enum lttng_action_status status; | |
363 | ||
364 | if (!action || !IS_ROTATE_SESSION_ACTION(action) || !session_name) { | |
365 | status = LTTNG_ACTION_STATUS_INVALID; | |
366 | goto end; | |
367 | } | |
368 | ||
369 | action_rotate_session = action_rotate_session_from_action_const(action); | |
370 | ||
371 | *session_name = action_rotate_session->session_name; | |
372 | ||
373 | status = LTTNG_ACTION_STATUS_OK; | |
374 | end: | |
375 | return status; | |
376 | } | |
c2c58434 | 377 | |
7f4d5b07 | 378 | enum lttng_action_status lttng_action_rotate_session_set_rate_policy( |
c2c58434 | 379 | struct lttng_action *action, |
7f4d5b07 | 380 | const struct lttng_rate_policy *policy) |
c2c58434 JR |
381 | { |
382 | enum lttng_action_status status; | |
383 | struct lttng_action_rotate_session *rotate_session_action; | |
7f4d5b07 | 384 | struct lttng_rate_policy *copy = NULL; |
c2c58434 JR |
385 | |
386 | if (!action || !policy || !IS_ROTATE_SESSION_ACTION(action)) { | |
387 | status = LTTNG_ACTION_STATUS_INVALID; | |
388 | goto end; | |
389 | } | |
390 | ||
7f4d5b07 | 391 | copy = lttng_rate_policy_copy(policy); |
c2c58434 JR |
392 | if (!copy) { |
393 | status = LTTNG_ACTION_STATUS_ERROR; | |
394 | goto end; | |
395 | } | |
396 | ||
397 | rotate_session_action = action_rotate_session_from_action(action); | |
398 | ||
7f4d5b07 JR |
399 | /* Free the previous rate policy .*/ |
400 | lttng_rate_policy_destroy(rotate_session_action->policy); | |
c2c58434 JR |
401 | |
402 | /* Assign the policy. */ | |
403 | rotate_session_action->policy = copy; | |
404 | status = LTTNG_ACTION_STATUS_OK; | |
405 | copy = NULL; | |
406 | ||
407 | end: | |
7f4d5b07 | 408 | lttng_rate_policy_destroy(copy); |
c2c58434 JR |
409 | return status; |
410 | } | |
411 | ||
7f4d5b07 | 412 | enum lttng_action_status lttng_action_rotate_session_get_rate_policy( |
c2c58434 | 413 | const struct lttng_action *action, |
7f4d5b07 | 414 | const struct lttng_rate_policy **policy) |
c2c58434 JR |
415 | { |
416 | enum lttng_action_status status; | |
417 | const struct lttng_action_rotate_session *rotate_session_action; | |
418 | ||
419 | if (!action || !policy || !IS_ROTATE_SESSION_ACTION(action)) { | |
420 | status = LTTNG_ACTION_STATUS_INVALID; | |
421 | goto end; | |
422 | } | |
423 | ||
424 | rotate_session_action = action_rotate_session_from_action_const(action); | |
425 | ||
426 | *policy = rotate_session_action->policy; | |
427 | status = LTTNG_ACTION_STATUS_OK; | |
428 | end: | |
429 | return status; | |
430 | } | |
2d57482c | 431 | |
7f4d5b07 JR |
432 | static const struct lttng_rate_policy * |
433 | lttng_action_rotate_session_internal_get_rate_policy( | |
2d57482c JR |
434 | const struct lttng_action *action) |
435 | { | |
436 | const struct lttng_action_rotate_session *_action; | |
437 | _action = action_rotate_session_from_action_const(action); | |
438 | ||
439 | return _action->policy; | |
440 | } |