Commit | Line | Data |
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c19092cd | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
c19092cd | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
c19092cd | 5 | * |
c19092cd JG |
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/condition/condition-internal.hpp> |
13 | #include <lttng/condition/session-rotation-internal.hpp> | |
14 | #include <lttng/location-internal.hpp> | |
28ab034a | 15 | |
c19092cd JG |
16 | #include <stdbool.h> |
17 | ||
28ab034a JG |
18 | static bool lttng_condition_session_rotation_validate(const struct lttng_condition *condition); |
19 | static int lttng_condition_session_rotation_serialize(const struct lttng_condition *condition, | |
20 | struct lttng_payload *payload); | |
21 | static bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, | |
22 | const struct lttng_condition *_b); | |
23 | static void lttng_condition_session_rotation_destroy(struct lttng_condition *condition); | |
24 | ||
25 | static enum lttng_error_code | |
26 | lttng_condition_session_rotation_mi_serialize(const struct lttng_condition *condition, | |
27 | struct mi_writer *writer); | |
28 | ||
29 | static const struct lttng_condition rotation_condition_template = { | |
a6bc4ca9 SM |
30 | {}, |
31 | LTTNG_CONDITION_TYPE_UNKNOWN, /* type unset, shall be set on creation. */ | |
32 | lttng_condition_session_rotation_validate, | |
33 | lttng_condition_session_rotation_serialize, | |
34 | lttng_condition_session_rotation_is_equal, | |
35 | lttng_condition_session_rotation_destroy, | |
36 | lttng_condition_session_rotation_mi_serialize, | |
c19092cd JG |
37 | }; |
38 | ||
28ab034a JG |
39 | static int lttng_evaluation_session_rotation_serialize(const struct lttng_evaluation *evaluation, |
40 | struct lttng_payload *payload); | |
41 | static void lttng_evaluation_session_rotation_destroy(struct lttng_evaluation *evaluation); | |
c19092cd | 42 | |
28ab034a | 43 | static const struct lttng_evaluation rotation_evaluation_template = { |
a6bc4ca9 SM |
44 | LTTNG_CONDITION_TYPE_UNKNOWN, /* type unset, shall be set on creation. */ |
45 | lttng_evaluation_session_rotation_serialize, | |
46 | lttng_evaluation_session_rotation_destroy, | |
c19092cd JG |
47 | }; |
48 | ||
28ab034a | 49 | static bool is_rotation_condition(const struct lttng_condition *condition) |
c19092cd JG |
50 | { |
51 | enum lttng_condition_type type = lttng_condition_get_type(condition); | |
52 | ||
53 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || | |
28ab034a | 54 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; |
c19092cd JG |
55 | } |
56 | ||
28ab034a | 57 | static bool is_rotation_evaluation(const struct lttng_evaluation *evaluation) |
c19092cd JG |
58 | { |
59 | enum lttng_condition_type type = lttng_evaluation_get_type(evaluation); | |
60 | ||
61 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || | |
28ab034a | 62 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; |
c19092cd JG |
63 | } |
64 | ||
28ab034a | 65 | static bool lttng_condition_session_rotation_validate(const struct lttng_condition *condition) |
c19092cd JG |
66 | { |
67 | bool valid = false; | |
68 | struct lttng_condition_session_rotation *rotation; | |
69 | ||
70 | if (!condition) { | |
71 | goto end; | |
72 | } | |
73 | ||
28ab034a | 74 | rotation = lttng::utils::container_of(condition, <tng_condition_session_rotation::parent); |
c19092cd JG |
75 | if (!rotation->session_name) { |
76 | ERR("Invalid session rotation condition: a target session name must be set."); | |
77 | goto end; | |
78 | } | |
79 | ||
80 | valid = true; | |
81 | end: | |
82 | return valid; | |
83 | } | |
84 | ||
28ab034a JG |
85 | static int lttng_condition_session_rotation_serialize(const struct lttng_condition *condition, |
86 | struct lttng_payload *payload) | |
c19092cd JG |
87 | { |
88 | int ret; | |
89 | size_t session_name_len; | |
90 | struct lttng_condition_session_rotation *rotation; | |
91 | struct lttng_condition_session_rotation_comm rotation_comm; | |
92 | ||
93 | if (!condition || !is_rotation_condition(condition)) { | |
94 | ret = -1; | |
95 | goto end; | |
96 | } | |
97 | ||
98 | DBG("Serializing session rotation condition"); | |
28ab034a | 99 | rotation = lttng::utils::container_of(condition, <tng_condition_session_rotation::parent); |
c19092cd JG |
100 | |
101 | session_name_len = strlen(rotation->session_name) + 1; | |
102 | if (session_name_len > LTTNG_NAME_MAX) { | |
103 | ret = -1; | |
104 | goto end; | |
105 | } | |
106 | ||
107 | rotation_comm.session_name_len = session_name_len; | |
28ab034a | 108 | ret = lttng_dynamic_buffer_append(&payload->buffer, &rotation_comm, sizeof(rotation_comm)); |
c19092cd JG |
109 | if (ret) { |
110 | goto end; | |
111 | } | |
28ab034a JG |
112 | ret = lttng_dynamic_buffer_append( |
113 | &payload->buffer, rotation->session_name, session_name_len); | |
c19092cd JG |
114 | if (ret) { |
115 | goto end; | |
116 | } | |
117 | end: | |
118 | return ret; | |
119 | } | |
120 | ||
28ab034a JG |
121 | static bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, |
122 | const struct lttng_condition *_b) | |
c19092cd JG |
123 | { |
124 | bool is_equal = false; | |
125 | struct lttng_condition_session_rotation *a, *b; | |
126 | ||
0114db0e JG |
127 | a = lttng::utils::container_of(_a, <tng_condition_session_rotation::parent); |
128 | b = lttng::utils::container_of(_b, <tng_condition_session_rotation::parent); | |
c19092cd JG |
129 | |
130 | /* Both session names must be set or both must be unset. */ | |
28ab034a | 131 | if ((a->session_name && !b->session_name) || (!a->session_name && b->session_name)) { |
c19092cd JG |
132 | WARN("Comparing session rotation conditions with uninitialized session names."); |
133 | goto end; | |
134 | } | |
135 | ||
5c7248cd | 136 | if (a->session_name && b->session_name && strcmp(a->session_name, b->session_name) != 0) { |
c19092cd JG |
137 | goto end; |
138 | } | |
139 | ||
140 | is_equal = true; | |
141 | end: | |
142 | return is_equal; | |
143 | } | |
144 | ||
28ab034a | 145 | static void lttng_condition_session_rotation_destroy(struct lttng_condition *condition) |
c19092cd JG |
146 | { |
147 | struct lttng_condition_session_rotation *rotation; | |
148 | ||
28ab034a | 149 | rotation = lttng::utils::container_of(condition, <tng_condition_session_rotation::parent); |
c19092cd JG |
150 | |
151 | free(rotation->session_name); | |
152 | free(rotation); | |
153 | } | |
154 | ||
28ab034a JG |
155 | static struct lttng_condition * |
156 | lttng_condition_session_rotation_create(enum lttng_condition_type type) | |
c19092cd JG |
157 | { |
158 | struct lttng_condition_session_rotation *condition; | |
159 | ||
64803277 | 160 | condition = zmalloc<lttng_condition_session_rotation>(); |
c19092cd | 161 | if (!condition) { |
cd9adb8b | 162 | return nullptr; |
c19092cd JG |
163 | } |
164 | ||
28ab034a | 165 | memcpy(&condition->parent, &rotation_condition_template, sizeof(condition->parent)); |
c19092cd JG |
166 | lttng_condition_init(&condition->parent, type); |
167 | return &condition->parent; | |
168 | } | |
169 | ||
170 | struct lttng_condition *lttng_condition_session_rotation_ongoing_create(void) | |
171 | { | |
172 | return lttng_condition_session_rotation_create( | |
28ab034a | 173 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); |
c19092cd JG |
174 | } |
175 | ||
176 | struct lttng_condition *lttng_condition_session_rotation_completed_create(void) | |
177 | { | |
178 | return lttng_condition_session_rotation_create( | |
28ab034a | 179 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); |
c19092cd JG |
180 | } |
181 | ||
28ab034a JG |
182 | static ssize_t init_condition_from_payload(struct lttng_condition *condition, |
183 | struct lttng_payload_view *src_view) | |
c19092cd JG |
184 | { |
185 | ssize_t ret, condition_size; | |
186 | enum lttng_condition_status status; | |
c19092cd JG |
187 | const char *session_name; |
188 | struct lttng_buffer_view name_view; | |
3e6e0df2 JG |
189 | const struct lttng_condition_session_rotation_comm *condition_comm; |
190 | struct lttng_payload_view condition_comm_view = | |
28ab034a | 191 | lttng_payload_view_from_view(src_view, 0, sizeof(*condition_comm)); |
c19092cd | 192 | |
3e6e0df2 | 193 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
c19092cd JG |
194 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
195 | ret = -1; | |
196 | goto end; | |
197 | } | |
198 | ||
c0a66c84 | 199 | condition_comm = (typeof(condition_comm)) src_view->buffer.data; |
28ab034a JG |
200 | name_view = lttng_buffer_view_from_view( |
201 | &src_view->buffer, sizeof(*condition_comm), condition_comm->session_name_len); | |
c19092cd | 202 | |
3e6e0df2 JG |
203 | if (!lttng_buffer_view_is_valid(&name_view)) { |
204 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain session name"); | |
c19092cd JG |
205 | ret = -1; |
206 | goto end; | |
207 | } | |
208 | ||
3e6e0df2 JG |
209 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { |
210 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); | |
c19092cd JG |
211 | ret = -1; |
212 | goto end; | |
213 | } | |
214 | ||
215 | session_name = name_view.data; | |
216 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { | |
217 | ERR("Malformed session name encountered in condition buffer"); | |
218 | ret = -1; | |
219 | goto end; | |
220 | } | |
221 | ||
28ab034a | 222 | status = lttng_condition_session_rotation_set_session_name(condition, session_name); |
c19092cd JG |
223 | if (status != LTTNG_CONDITION_STATUS_OK) { |
224 | ERR("Failed to set buffer consumed session name"); | |
225 | ret = -1; | |
226 | goto end; | |
227 | } | |
228 | ||
229 | if (!lttng_condition_validate(condition)) { | |
230 | ret = -1; | |
231 | goto end; | |
232 | } | |
233 | ||
28ab034a | 234 | condition_size = sizeof(*condition_comm) + (ssize_t) condition_comm->session_name_len; |
c19092cd JG |
235 | ret = condition_size; |
236 | end: | |
237 | return ret; | |
238 | } | |
239 | ||
28ab034a JG |
240 | static ssize_t |
241 | lttng_condition_session_rotation_create_from_payload(struct lttng_payload_view *view, | |
242 | struct lttng_condition **_condition, | |
243 | enum lttng_condition_type type) | |
c19092cd JG |
244 | { |
245 | ssize_t ret; | |
cd9adb8b | 246 | struct lttng_condition *condition = nullptr; |
c19092cd JG |
247 | |
248 | switch (type) { | |
249 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
250 | condition = lttng_condition_session_rotation_ongoing_create(); | |
251 | break; | |
252 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
253 | condition = lttng_condition_session_rotation_completed_create(); | |
254 | break; | |
255 | default: | |
256 | ret = -1; | |
257 | goto error; | |
258 | } | |
259 | ||
260 | if (!_condition || !condition) { | |
261 | ret = -1; | |
262 | goto error; | |
263 | } | |
264 | ||
c0a66c84 | 265 | ret = init_condition_from_payload(condition, view); |
c19092cd JG |
266 | if (ret < 0) { |
267 | goto error; | |
268 | } | |
269 | ||
270 | *_condition = condition; | |
271 | return ret; | |
272 | error: | |
273 | lttng_condition_destroy(condition); | |
274 | return ret; | |
275 | } | |
276 | ||
28ab034a JG |
277 | ssize_t |
278 | lttng_condition_session_rotation_ongoing_create_from_payload(struct lttng_payload_view *view, | |
279 | struct lttng_condition **condition) | |
c19092cd | 280 | { |
28ab034a JG |
281 | return lttng_condition_session_rotation_create_from_payload( |
282 | view, condition, LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); | |
c19092cd JG |
283 | } |
284 | ||
28ab034a JG |
285 | ssize_t |
286 | lttng_condition_session_rotation_completed_create_from_payload(struct lttng_payload_view *view, | |
287 | struct lttng_condition **condition) | |
c19092cd | 288 | { |
28ab034a JG |
289 | return lttng_condition_session_rotation_create_from_payload( |
290 | view, condition, LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); | |
c19092cd JG |
291 | } |
292 | ||
28ab034a JG |
293 | static struct lttng_evaluation *lttng_evaluation_session_rotation_create( |
294 | enum lttng_condition_type type, uint64_t id, struct lttng_trace_archive_location *location) | |
c19092cd JG |
295 | { |
296 | struct lttng_evaluation_session_rotation *evaluation; | |
297 | ||
64803277 | 298 | evaluation = zmalloc<lttng_evaluation_session_rotation>(); |
c19092cd | 299 | if (!evaluation) { |
cd9adb8b | 300 | return nullptr; |
c19092cd JG |
301 | } |
302 | ||
28ab034a | 303 | memcpy(&evaluation->parent, &rotation_evaluation_template, sizeof(evaluation->parent)); |
c19092cd JG |
304 | lttng_evaluation_init(&evaluation->parent, type); |
305 | evaluation->id = id; | |
d3740619 JR |
306 | if (location) { |
307 | lttng_trace_archive_location_get(location); | |
308 | } | |
c19092cd JG |
309 | evaluation->location = location; |
310 | return &evaluation->parent; | |
311 | } | |
312 | ||
28ab034a JG |
313 | static ssize_t create_evaluation_from_payload(enum lttng_condition_type type, |
314 | struct lttng_payload_view *view, | |
315 | struct lttng_evaluation **_evaluation) | |
c19092cd JG |
316 | { |
317 | ssize_t ret, size; | |
cd9adb8b JG |
318 | struct lttng_evaluation *evaluation = nullptr; |
319 | struct lttng_trace_archive_location *location = nullptr; | |
3e6e0df2 | 320 | const struct lttng_evaluation_session_rotation_comm *comm; |
28ab034a | 321 | struct lttng_payload_view comm_view = lttng_payload_view_from_view(view, 0, sizeof(*comm)); |
c19092cd | 322 | |
3e6e0df2 | 323 | if (!lttng_payload_view_is_valid(&comm_view)) { |
c19092cd JG |
324 | goto error; |
325 | } | |
326 | ||
3e6e0df2 | 327 | comm = (typeof(comm)) comm_view.buffer.data; |
c19092cd JG |
328 | size = sizeof(*comm); |
329 | if (comm->has_location) { | |
3e6e0df2 | 330 | const struct lttng_buffer_view location_view = |
28ab034a | 331 | lttng_buffer_view_from_view(&view->buffer, sizeof(*comm), -1); |
3e6e0df2 JG |
332 | |
333 | if (!lttng_buffer_view_is_valid(&location_view)) { | |
c19092cd JG |
334 | goto error; |
335 | } | |
336 | ||
28ab034a | 337 | ret = lttng_trace_archive_location_create_from_buffer(&location_view, &location); |
c19092cd JG |
338 | if (ret < 0) { |
339 | goto error; | |
340 | } | |
341 | size += ret; | |
342 | } | |
343 | ||
28ab034a | 344 | evaluation = lttng_evaluation_session_rotation_create(type, comm->id, location); |
c19092cd JG |
345 | if (!evaluation) { |
346 | goto error; | |
347 | } | |
348 | ||
d3740619 | 349 | lttng_trace_archive_location_put(location); |
c19092cd JG |
350 | ret = size; |
351 | *_evaluation = evaluation; | |
352 | return ret; | |
353 | error: | |
d3740619 | 354 | lttng_trace_archive_location_put(location); |
cd9adb8b | 355 | evaluation = nullptr; |
c19092cd JG |
356 | return -1; |
357 | } | |
358 | ||
28ab034a JG |
359 | static ssize_t |
360 | lttng_evaluation_session_rotation_create_from_payload(enum lttng_condition_type type, | |
361 | struct lttng_payload_view *view, | |
362 | struct lttng_evaluation **_evaluation) | |
c19092cd JG |
363 | { |
364 | ssize_t ret; | |
cd9adb8b | 365 | struct lttng_evaluation *evaluation = nullptr; |
c19092cd JG |
366 | |
367 | if (!_evaluation) { | |
368 | ret = -1; | |
369 | goto error; | |
370 | } | |
371 | ||
c0a66c84 | 372 | ret = create_evaluation_from_payload(type, view, &evaluation); |
c19092cd JG |
373 | if (ret < 0) { |
374 | goto error; | |
375 | } | |
376 | ||
377 | *_evaluation = evaluation; | |
378 | return ret; | |
379 | error: | |
380 | lttng_evaluation_destroy(evaluation); | |
381 | return ret; | |
382 | } | |
383 | ||
28ab034a JG |
384 | ssize_t |
385 | lttng_evaluation_session_rotation_ongoing_create_from_payload(struct lttng_payload_view *view, | |
386 | struct lttng_evaluation **evaluation) | |
c19092cd | 387 | { |
c0a66c84 | 388 | return lttng_evaluation_session_rotation_create_from_payload( |
28ab034a | 389 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, view, evaluation); |
c19092cd JG |
390 | } |
391 | ||
c0a66c84 | 392 | ssize_t lttng_evaluation_session_rotation_completed_create_from_payload( |
28ab034a | 393 | struct lttng_payload_view *view, struct lttng_evaluation **evaluation) |
c19092cd | 394 | { |
c0a66c84 | 395 | return lttng_evaluation_session_rotation_create_from_payload( |
28ab034a | 396 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, view, evaluation); |
c19092cd JG |
397 | } |
398 | ||
28ab034a | 399 | struct lttng_evaluation *lttng_evaluation_session_rotation_ongoing_create(uint64_t id) |
c19092cd JG |
400 | { |
401 | return lttng_evaluation_session_rotation_create( | |
cd9adb8b | 402 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, id, nullptr); |
c19092cd JG |
403 | } |
404 | ||
28ab034a JG |
405 | struct lttng_evaluation * |
406 | lttng_evaluation_session_rotation_completed_create(uint64_t id, | |
407 | struct lttng_trace_archive_location *location) | |
c19092cd JG |
408 | { |
409 | return lttng_evaluation_session_rotation_create( | |
28ab034a | 410 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, id, location); |
c19092cd JG |
411 | } |
412 | ||
413 | enum lttng_condition_status | |
28ab034a JG |
414 | lttng_condition_session_rotation_get_session_name(const struct lttng_condition *condition, |
415 | const char **session_name) | |
c19092cd JG |
416 | { |
417 | struct lttng_condition_session_rotation *rotation; | |
418 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
419 | ||
420 | if (!condition || !is_rotation_condition(condition) || !session_name) { | |
421 | status = LTTNG_CONDITION_STATUS_INVALID; | |
422 | goto end; | |
423 | } | |
424 | ||
28ab034a | 425 | rotation = lttng::utils::container_of(condition, <tng_condition_session_rotation::parent); |
c19092cd JG |
426 | if (!rotation->session_name) { |
427 | status = LTTNG_CONDITION_STATUS_UNSET; | |
428 | goto end; | |
429 | } | |
430 | *session_name = rotation->session_name; | |
431 | end: | |
432 | return status; | |
433 | } | |
434 | ||
435 | enum lttng_condition_status | |
28ab034a JG |
436 | lttng_condition_session_rotation_set_session_name(struct lttng_condition *condition, |
437 | const char *session_name) | |
c19092cd JG |
438 | { |
439 | char *session_name_copy; | |
440 | struct lttng_condition_session_rotation *rotation; | |
441 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; | |
442 | ||
28ab034a JG |
443 | if (!condition || !is_rotation_condition(condition) || !session_name || |
444 | strlen(session_name) == 0) { | |
c19092cd JG |
445 | status = LTTNG_CONDITION_STATUS_INVALID; |
446 | goto end; | |
447 | } | |
448 | ||
28ab034a | 449 | rotation = lttng::utils::container_of(condition, <tng_condition_session_rotation::parent); |
c19092cd JG |
450 | session_name_copy = strdup(session_name); |
451 | if (!session_name_copy) { | |
452 | status = LTTNG_CONDITION_STATUS_ERROR; | |
453 | goto end; | |
454 | } | |
455 | ||
456 | free(rotation->session_name); | |
457 | rotation->session_name = session_name_copy; | |
458 | end: | |
459 | return status; | |
460 | } | |
461 | ||
28ab034a JG |
462 | static int lttng_evaluation_session_rotation_serialize(const struct lttng_evaluation *evaluation, |
463 | struct lttng_payload *payload) | |
c19092cd JG |
464 | { |
465 | int ret; | |
466 | struct lttng_evaluation_session_rotation *rotation; | |
1c9a0b0e | 467 | struct lttng_evaluation_session_rotation_comm comm = {}; |
c19092cd | 468 | |
28ab034a JG |
469 | rotation = |
470 | lttng::utils::container_of(evaluation, <tng_evaluation_session_rotation::parent); | |
c19092cd JG |
471 | comm.id = rotation->id; |
472 | comm.has_location = !!rotation->location; | |
28ab034a | 473 | ret = lttng_dynamic_buffer_append(&payload->buffer, &comm, sizeof(comm)); |
c19092cd JG |
474 | if (ret) { |
475 | goto end; | |
476 | } | |
477 | if (!rotation->location) { | |
478 | goto end; | |
479 | } | |
28ab034a | 480 | ret = lttng_trace_archive_location_serialize(rotation->location, &payload->buffer); |
c19092cd JG |
481 | end: |
482 | return ret; | |
483 | } | |
484 | ||
28ab034a | 485 | static void lttng_evaluation_session_rotation_destroy(struct lttng_evaluation *evaluation) |
c19092cd JG |
486 | { |
487 | struct lttng_evaluation_session_rotation *rotation; | |
488 | ||
28ab034a JG |
489 | rotation = |
490 | lttng::utils::container_of(evaluation, <tng_evaluation_session_rotation::parent); | |
d3740619 | 491 | lttng_trace_archive_location_put(rotation->location); |
c19092cd JG |
492 | free(rotation); |
493 | } | |
494 | ||
495 | enum lttng_evaluation_status | |
28ab034a | 496 | lttng_evaluation_session_rotation_get_id(const struct lttng_evaluation *evaluation, uint64_t *id) |
c19092cd JG |
497 | { |
498 | const struct lttng_evaluation_session_rotation *rotation; | |
499 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
500 | ||
501 | if (!evaluation || !id || !is_rotation_evaluation(evaluation)) { | |
502 | status = LTTNG_EVALUATION_STATUS_INVALID; | |
503 | goto end; | |
504 | } | |
505 | ||
28ab034a JG |
506 | rotation = |
507 | lttng::utils::container_of(evaluation, <tng_evaluation_session_rotation::parent); | |
c19092cd JG |
508 | *id = rotation->id; |
509 | end: | |
510 | return status; | |
511 | } | |
512 | ||
d3740619 JR |
513 | /* |
514 | * The public API assumes that trace archive locations are always provided as | |
515 | * "constant". This means that the user of liblttng-ctl never has to destroy a | |
516 | * trace archive location. Hence, users of liblttng-ctl have no visibility of | |
517 | * the reference counting of archive locations. | |
518 | */ | |
28ab034a JG |
519 | enum lttng_evaluation_status lttng_evaluation_session_rotation_completed_get_location( |
520 | const struct lttng_evaluation *evaluation, | |
521 | const struct lttng_trace_archive_location **location) | |
c19092cd JG |
522 | { |
523 | const struct lttng_evaluation_session_rotation *rotation; | |
524 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; | |
525 | ||
526 | if (!evaluation || !location || | |
28ab034a | 527 | evaluation->type != LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED) { |
c19092cd JG |
528 | status = LTTNG_EVALUATION_STATUS_INVALID; |
529 | goto end; | |
530 | } | |
531 | ||
28ab034a JG |
532 | rotation = |
533 | lttng::utils::container_of(evaluation, <tng_evaluation_session_rotation::parent); | |
c19092cd JG |
534 | *location = rotation->location; |
535 | end: | |
536 | return status; | |
537 | } | |
6a751b95 | 538 | |
28ab034a JG |
539 | static enum lttng_error_code |
540 | lttng_condition_session_rotation_mi_serialize(const struct lttng_condition *condition, | |
541 | struct mi_writer *writer) | |
6a751b95 JR |
542 | { |
543 | int ret; | |
544 | enum lttng_error_code ret_code; | |
545 | enum lttng_condition_status status; | |
cd9adb8b JG |
546 | const char *session_name = nullptr; |
547 | const char *type_element_str = nullptr; | |
6a751b95 | 548 | |
a0377dfe FD |
549 | LTTNG_ASSERT(condition); |
550 | LTTNG_ASSERT(writer); | |
551 | LTTNG_ASSERT(is_rotation_condition(condition)); | |
6a751b95 JR |
552 | |
553 | switch (lttng_condition_get_type(condition)) { | |
554 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: | |
28ab034a | 555 | type_element_str = mi_lttng_element_condition_session_rotation_completed; |
6a751b95 JR |
556 | break; |
557 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: | |
28ab034a | 558 | type_element_str = mi_lttng_element_condition_session_rotation_ongoing; |
6a751b95 JR |
559 | break; |
560 | default: | |
561 | abort(); | |
562 | break; | |
563 | } | |
564 | ||
28ab034a | 565 | status = lttng_condition_session_rotation_get_session_name(condition, &session_name); |
a0377dfe FD |
566 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
567 | LTTNG_ASSERT(session_name); | |
6a751b95 JR |
568 | |
569 | /* Open condition session rotation_* element. */ | |
570 | ret = mi_lttng_writer_open_element(writer, type_element_str); | |
571 | if (ret) { | |
572 | goto mi_error; | |
573 | } | |
574 | ||
575 | /* Session name. */ | |
576 | ret = mi_lttng_writer_write_element_string( | |
28ab034a | 577 | writer, mi_lttng_element_session_name, session_name); |
6a751b95 JR |
578 | if (ret) { |
579 | goto mi_error; | |
580 | } | |
581 | ||
582 | /* Close condition session rotation element. */ | |
583 | ret = mi_lttng_writer_close_element(writer); | |
584 | if (ret) { | |
585 | goto mi_error; | |
586 | } | |
587 | ||
588 | ret_code = LTTNG_OK; | |
589 | goto end; | |
590 | ||
591 | mi_error: | |
592 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
593 | end: | |
594 | return ret_code; | |
595 | } |