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> | |
28ab034a | 11 | |
c9e313bc SM |
12 | #include <lttng/action/action-internal.hpp> |
13 | #include <lttng/action/rate-policy-internal.hpp> | |
7f4d5b07 | 14 | #include <lttng/action/rate-policy.h> |
c9e313bc | 15 | #include <lttng/action/rotate-session-internal.hpp> |
bfb2ec6a SM |
16 | #include <lttng/action/rotate-session.h> |
17 | ||
18 | #define IS_ROTATE_SESSION_ACTION(action) \ | |
17182cfd | 19 | (lttng_action_get_type(action) == LTTNG_ACTION_TYPE_ROTATE_SESSION) |
bfb2ec6a | 20 | |
f1494934 | 21 | namespace { |
bfb2ec6a SM |
22 | struct lttng_action_rotate_session { |
23 | struct lttng_action parent; | |
24 | ||
25 | /* Owned by this. */ | |
26 | char *session_name; | |
7f4d5b07 | 27 | struct lttng_rate_policy *policy; |
bfb2ec6a SM |
28 | }; |
29 | ||
30 | struct lttng_action_rotate_session_comm { | |
31 | /* Includes the trailing \0. */ | |
32 | uint32_t session_name_len; | |
33 | ||
34 | /* | |
35 | * Variable data: | |
36 | * | |
37 | * - session name (null terminated) | |
c2c58434 | 38 | * - policy |
bfb2ec6a SM |
39 | */ |
40 | char data[]; | |
41 | } LTTNG_PACKED; | |
f1494934 | 42 | } /* namespace */ |
bfb2ec6a | 43 | |
7f4d5b07 | 44 | static const struct lttng_rate_policy * |
28ab034a | 45 | lttng_action_rotate_session_internal_get_rate_policy(const struct lttng_action *action); |
2d57482c | 46 | |
28ab034a JG |
47 | static struct lttng_action_rotate_session * |
48 | action_rotate_session_from_action(struct lttng_action *action) | |
bfb2ec6a | 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 || | |
28ab034a | 77 | strlen(action_rotate_session->session_name) == 0) { |
bfb2ec6a SM |
78 | valid = false; |
79 | goto end; | |
80 | } | |
81 | ||
82 | valid = true; | |
83 | end: | |
84 | return valid; | |
85 | } | |
86 | ||
28ab034a JG |
87 | static bool lttng_action_rotate_session_is_equal(const struct lttng_action *_a, |
88 | const struct lttng_action *_b) | |
bfb2ec6a SM |
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); | |
5c7248cd | 99 | if (strcmp(a->session_name, b->session_name) != 0) { |
bfb2ec6a SM |
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 | } | |
28ab034a JG |
107 | static int lttng_action_rotate_session_serialize(struct lttng_action *action, |
108 | 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", | |
28ab034a | 123 | action_rotate_session->session_name); |
bfb2ec6a SM |
124 | |
125 | session_name_len = strlen(action_rotate_session->session_name) + 1; | |
126 | comm.session_name_len = session_name_len; | |
127 | ||
28ab034a | 128 | ret = lttng_dynamic_buffer_append(&payload->buffer, &comm, sizeof(comm)); |
bfb2ec6a SM |
129 | if (ret) { |
130 | ret = -1; | |
131 | goto end; | |
132 | } | |
133 | ||
28ab034a JG |
134 | ret = lttng_dynamic_buffer_append( |
135 | &payload->buffer, action_rotate_session->session_name, session_name_len); | |
bfb2ec6a SM |
136 | if (ret) { |
137 | ret = -1; | |
138 | goto end; | |
139 | } | |
140 | ||
28ab034a | 141 | ret = lttng_rate_policy_serialize(action_rotate_session->policy, payload); |
c2c58434 JR |
142 | if (ret) { |
143 | ret = -1; | |
144 | goto end; | |
145 | } | |
bfb2ec6a SM |
146 | end: |
147 | return ret; | |
148 | } | |
149 | ||
150 | static void lttng_action_rotate_session_destroy(struct lttng_action *action) | |
151 | { | |
152 | struct lttng_action_rotate_session *action_rotate_session; | |
153 | ||
154 | if (!action) { | |
155 | goto end; | |
156 | } | |
157 | ||
158 | action_rotate_session = action_rotate_session_from_action(action); | |
159 | ||
7f4d5b07 | 160 | lttng_rate_policy_destroy(action_rotate_session->policy); |
bfb2ec6a SM |
161 | free(action_rotate_session->session_name); |
162 | free(action_rotate_session); | |
163 | ||
164 | end: | |
165 | return; | |
166 | } | |
167 | ||
28ab034a JG |
168 | ssize_t lttng_action_rotate_session_create_from_payload(struct lttng_payload_view *view, |
169 | struct lttng_action **p_action) | |
bfb2ec6a | 170 | { |
c2c58434 | 171 | ssize_t consumed_len, ret; |
bfb2ec6a SM |
172 | const struct lttng_action_rotate_session_comm *comm; |
173 | const char *session_name; | |
174 | struct lttng_action *action; | |
175 | enum lttng_action_status status; | |
cd9adb8b | 176 | struct lttng_rate_policy *policy = nullptr; |
bfb2ec6a SM |
177 | |
178 | action = lttng_action_rotate_session_create(); | |
179 | if (!action) { | |
180 | consumed_len = -1; | |
181 | goto end; | |
182 | } | |
183 | ||
c0a66c84 | 184 | comm = (typeof(comm)) view->buffer.data; |
bfb2ec6a SM |
185 | session_name = (const char *) &comm->data; |
186 | ||
187 | if (!lttng_buffer_view_contains_string( | |
28ab034a | 188 | &view->buffer, session_name, comm->session_name_len)) { |
bfb2ec6a SM |
189 | consumed_len = -1; |
190 | goto end; | |
191 | } | |
c2c58434 JR |
192 | consumed_len = sizeof(*comm) + comm->session_name_len; |
193 | ||
7f4d5b07 | 194 | /* Rate policy. */ |
c2c58434 JR |
195 | { |
196 | struct lttng_payload_view policy_view = | |
28ab034a JG |
197 | lttng_payload_view_from_view(view, consumed_len, -1); |
198 | ret = lttng_rate_policy_create_from_payload(&policy_view, &policy); | |
c2c58434 JR |
199 | if (ret < 0) { |
200 | consumed_len = -1; | |
201 | goto end; | |
202 | } | |
203 | consumed_len += ret; | |
204 | } | |
bfb2ec6a | 205 | |
28ab034a | 206 | status = lttng_action_rotate_session_set_session_name(action, session_name); |
bfb2ec6a SM |
207 | if (status != LTTNG_ACTION_STATUS_OK) { |
208 | consumed_len = -1; | |
209 | goto end; | |
210 | } | |
211 | ||
a0377dfe | 212 | LTTNG_ASSERT(policy); |
7f4d5b07 | 213 | status = lttng_action_rotate_session_set_rate_policy(action, policy); |
c2c58434 JR |
214 | if (status != LTTNG_ACTION_STATUS_OK) { |
215 | consumed_len = -1; | |
216 | goto end; | |
217 | } | |
218 | ||
bfb2ec6a | 219 | *p_action = action; |
cd9adb8b | 220 | action = nullptr; |
bfb2ec6a SM |
221 | |
222 | end: | |
7f4d5b07 | 223 | lttng_rate_policy_destroy(policy); |
bfb2ec6a SM |
224 | lttng_action_rotate_session_destroy(action); |
225 | ||
226 | return consumed_len; | |
227 | } | |
228 | ||
28ab034a JG |
229 | static enum lttng_error_code |
230 | lttng_action_rotate_session_mi_serialize(const struct lttng_action *action, | |
231 | struct mi_writer *writer) | |
6a751b95 JR |
232 | { |
233 | int ret; | |
234 | enum lttng_error_code ret_code; | |
235 | enum lttng_action_status status; | |
cd9adb8b JG |
236 | const char *session_name = nullptr; |
237 | const struct lttng_rate_policy *policy = nullptr; | |
6a751b95 | 238 | |
a0377dfe FD |
239 | LTTNG_ASSERT(action); |
240 | LTTNG_ASSERT(IS_ROTATE_SESSION_ACTION(action)); | |
6a751b95 | 241 | |
28ab034a | 242 | status = lttng_action_rotate_session_get_session_name(action, &session_name); |
a0377dfe | 243 | LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK); |
cd9adb8b | 244 | LTTNG_ASSERT(session_name != nullptr); |
6a751b95 JR |
245 | |
246 | status = lttng_action_notify_get_rate_policy(action, &policy); | |
a0377dfe | 247 | LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK); |
cd9adb8b | 248 | LTTNG_ASSERT(policy != nullptr); |
6a751b95 JR |
249 | |
250 | /* Open action rotate session element. */ | |
28ab034a | 251 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_action_rotate_session); |
6a751b95 JR |
252 | if (ret) { |
253 | goto mi_error; | |
254 | } | |
255 | ||
256 | /* Session name. */ | |
257 | ret = mi_lttng_writer_write_element_string( | |
28ab034a | 258 | writer, mi_lttng_element_session_name, session_name); |
6a751b95 JR |
259 | if (ret) { |
260 | goto mi_error; | |
261 | } | |
262 | ||
263 | /* Rate policy. */ | |
264 | ret_code = lttng_rate_policy_mi_serialize(policy, writer); | |
265 | if (ret_code != LTTNG_OK) { | |
266 | goto end; | |
267 | } | |
268 | ||
269 | /* Close action rotate session element. */ | |
270 | ret = mi_lttng_writer_close_element(writer); | |
271 | if (ret) { | |
272 | goto mi_error; | |
273 | } | |
274 | ||
275 | ret_code = LTTNG_OK; | |
276 | goto end; | |
277 | ||
278 | mi_error: | |
279 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
280 | end: | |
281 | return ret_code; | |
282 | } | |
283 | ||
bfb2ec6a SM |
284 | struct lttng_action *lttng_action_rotate_session_create(void) |
285 | { | |
cd9adb8b JG |
286 | struct lttng_action_rotate_session *action_rotate = nullptr; |
287 | struct lttng_rate_policy *policy = nullptr; | |
c2c58434 JR |
288 | enum lttng_action_status status; |
289 | ||
7f4d5b07 JR |
290 | /* Create a every N = 1 rate policy. */ |
291 | policy = lttng_rate_policy_every_n_create(1); | |
c2c58434 JR |
292 | if (!policy) { |
293 | goto end; | |
294 | } | |
bfb2ec6a | 295 | |
64803277 SM |
296 | action_rotate = zmalloc<lttng_action_rotate_session>(); |
297 | if (!action_rotate) { | |
bfb2ec6a SM |
298 | goto end; |
299 | } | |
300 | ||
64803277 | 301 | lttng_action_init(&action_rotate->parent, |
28ab034a JG |
302 | LTTNG_ACTION_TYPE_ROTATE_SESSION, |
303 | lttng_action_rotate_session_validate, | |
304 | lttng_action_rotate_session_serialize, | |
305 | lttng_action_rotate_session_is_equal, | |
306 | lttng_action_rotate_session_destroy, | |
307 | lttng_action_rotate_session_internal_get_rate_policy, | |
308 | lttng_action_generic_add_error_query_results, | |
309 | lttng_action_rotate_session_mi_serialize); | |
310 | ||
311 | status = lttng_action_rotate_session_set_rate_policy(&action_rotate->parent, policy); | |
c2c58434 | 312 | if (status != LTTNG_ACTION_STATUS_OK) { |
64803277 | 313 | lttng_action_destroy(&action_rotate->parent); |
cd9adb8b | 314 | action_rotate = nullptr; |
c2c58434 JR |
315 | goto end; |
316 | } | |
317 | ||
bfb2ec6a | 318 | end: |
7f4d5b07 | 319 | lttng_rate_policy_destroy(policy); |
64803277 | 320 | return action_rotate ? &action_rotate->parent : nullptr; |
bfb2ec6a SM |
321 | } |
322 | ||
28ab034a JG |
323 | enum lttng_action_status lttng_action_rotate_session_set_session_name(struct lttng_action *action, |
324 | const char *session_name) | |
bfb2ec6a SM |
325 | { |
326 | struct lttng_action_rotate_session *action_rotate_session; | |
327 | enum lttng_action_status status; | |
328 | ||
329 | if (!action || !IS_ROTATE_SESSION_ACTION(action) || !session_name || | |
28ab034a | 330 | strlen(session_name) == 0) { |
bfb2ec6a SM |
331 | status = LTTNG_ACTION_STATUS_INVALID; |
332 | goto end; | |
333 | } | |
334 | ||
335 | action_rotate_session = action_rotate_session_from_action(action); | |
336 | ||
337 | free(action_rotate_session->session_name); | |
338 | ||
339 | action_rotate_session->session_name = strdup(session_name); | |
340 | if (!action_rotate_session->session_name) { | |
341 | status = LTTNG_ACTION_STATUS_ERROR; | |
342 | goto end; | |
343 | } | |
344 | ||
345 | status = LTTNG_ACTION_STATUS_OK; | |
346 | end: | |
347 | return status; | |
348 | } | |
349 | ||
28ab034a JG |
350 | enum lttng_action_status |
351 | lttng_action_rotate_session_get_session_name(const struct lttng_action *action, | |
352 | const char **session_name) | |
bfb2ec6a SM |
353 | { |
354 | const struct lttng_action_rotate_session *action_rotate_session; | |
355 | enum lttng_action_status status; | |
356 | ||
357 | if (!action || !IS_ROTATE_SESSION_ACTION(action) || !session_name) { | |
358 | status = LTTNG_ACTION_STATUS_INVALID; | |
359 | goto end; | |
360 | } | |
361 | ||
362 | action_rotate_session = action_rotate_session_from_action_const(action); | |
363 | ||
364 | *session_name = action_rotate_session->session_name; | |
365 | ||
366 | status = LTTNG_ACTION_STATUS_OK; | |
367 | end: | |
368 | return status; | |
369 | } | |
c2c58434 | 370 | |
28ab034a JG |
371 | enum lttng_action_status |
372 | lttng_action_rotate_session_set_rate_policy(struct lttng_action *action, | |
373 | const struct lttng_rate_policy *policy) | |
c2c58434 JR |
374 | { |
375 | enum lttng_action_status status; | |
376 | struct lttng_action_rotate_session *rotate_session_action; | |
cd9adb8b | 377 | struct lttng_rate_policy *copy = nullptr; |
c2c58434 JR |
378 | |
379 | if (!action || !policy || !IS_ROTATE_SESSION_ACTION(action)) { | |
380 | status = LTTNG_ACTION_STATUS_INVALID; | |
381 | goto end; | |
382 | } | |
383 | ||
7f4d5b07 | 384 | copy = lttng_rate_policy_copy(policy); |
c2c58434 JR |
385 | if (!copy) { |
386 | status = LTTNG_ACTION_STATUS_ERROR; | |
387 | goto end; | |
388 | } | |
389 | ||
390 | rotate_session_action = action_rotate_session_from_action(action); | |
391 | ||
7f4d5b07 JR |
392 | /* Free the previous rate policy .*/ |
393 | lttng_rate_policy_destroy(rotate_session_action->policy); | |
c2c58434 JR |
394 | |
395 | /* Assign the policy. */ | |
396 | rotate_session_action->policy = copy; | |
397 | status = LTTNG_ACTION_STATUS_OK; | |
cd9adb8b | 398 | copy = nullptr; |
c2c58434 JR |
399 | |
400 | end: | |
7f4d5b07 | 401 | lttng_rate_policy_destroy(copy); |
c2c58434 JR |
402 | return status; |
403 | } | |
404 | ||
28ab034a JG |
405 | enum lttng_action_status |
406 | lttng_action_rotate_session_get_rate_policy(const struct lttng_action *action, | |
407 | const struct lttng_rate_policy **policy) | |
c2c58434 JR |
408 | { |
409 | enum lttng_action_status status; | |
410 | const struct lttng_action_rotate_session *rotate_session_action; | |
411 | ||
412 | if (!action || !policy || !IS_ROTATE_SESSION_ACTION(action)) { | |
413 | status = LTTNG_ACTION_STATUS_INVALID; | |
414 | goto end; | |
415 | } | |
416 | ||
417 | rotate_session_action = action_rotate_session_from_action_const(action); | |
418 | ||
419 | *policy = rotate_session_action->policy; | |
420 | status = LTTNG_ACTION_STATUS_OK; | |
421 | end: | |
422 | return status; | |
423 | } | |
2d57482c | 424 | |
7f4d5b07 | 425 | static const struct lttng_rate_policy * |
28ab034a | 426 | lttng_action_rotate_session_internal_get_rate_policy(const struct lttng_action *action) |
2d57482c JR |
427 | { |
428 | const struct lttng_action_rotate_session *_action; | |
429 | _action = action_rotate_session_from_action_const(action); | |
430 | ||
431 | return _action->policy; | |
432 | } |