2 * Copyright (C) 2019 Simon Marchi <simon.marchi@efficios.com>
4 * SPDX-License-Identifier: LGPL-2.1-only
9 #include <common/error.h>
10 #include <common/macros.h>
11 #include <common/mi-lttng.h>
12 #include <lttng/action/action-internal.h>
13 #include <lttng/action/rate-policy-internal.h>
14 #include <lttng/action/rate-policy.h>
15 #include <lttng/action/rotate-session-internal.h>
16 #include <lttng/action/rotate-session.h>
18 #define IS_ROTATE_SESSION_ACTION(action) \
19 (lttng_action_get_type(action) == LTTNG_ACTION_TYPE_ROTATE_SESSION)
21 struct lttng_action_rotate_session
{
22 struct lttng_action parent
;
26 struct lttng_rate_policy
*policy
;
29 struct lttng_action_rotate_session_comm
{
30 /* Includes the trailing \0. */
31 uint32_t session_name_len
;
36 * - session name (null terminated)
42 static const struct lttng_rate_policy
*
43 lttng_action_rotate_session_internal_get_rate_policy(
44 const struct lttng_action
*action
);
46 static struct lttng_action_rotate_session
*action_rotate_session_from_action(
47 struct lttng_action
*action
)
51 return container_of(action
, struct lttng_action_rotate_session
, parent
);
54 static const struct lttng_action_rotate_session
*
55 action_rotate_session_from_action_const(const struct lttng_action
*action
)
59 return container_of(action
, struct lttng_action_rotate_session
, parent
);
62 static bool lttng_action_rotate_session_validate(struct lttng_action
*action
)
65 struct lttng_action_rotate_session
*action_rotate_session
;
72 action_rotate_session
= action_rotate_session_from_action(action
);
74 /* A non-empty session name is mandatory. */
75 if (!action_rotate_session
->session_name
||
76 strlen(action_rotate_session
->session_name
) == 0) {
86 static bool lttng_action_rotate_session_is_equal(
87 const struct lttng_action
*_a
, const struct lttng_action
*_b
)
89 bool is_equal
= false;
90 const struct lttng_action_rotate_session
*a
, *b
;
92 a
= action_rotate_session_from_action_const(_a
);
93 b
= action_rotate_session_from_action_const(_b
);
95 /* Action is not valid if this is not true. */
96 assert(a
->session_name
);
97 assert(b
->session_name
);
98 if (strcmp(a
->session_name
, b
->session_name
)) {
102 is_equal
= lttng_rate_policy_is_equal(a
->policy
, b
->policy
);
106 static int lttng_action_rotate_session_serialize(
107 struct lttng_action
*action
, struct lttng_payload
*payload
)
109 struct lttng_action_rotate_session
*action_rotate_session
;
110 struct lttng_action_rotate_session_comm comm
;
111 size_t session_name_len
;
117 action_rotate_session
= action_rotate_session_from_action(action
);
119 assert(action_rotate_session
->session_name
);
121 DBG("Serializing rotate session action: session-name: %s",
122 action_rotate_session
->session_name
);
124 session_name_len
= strlen(action_rotate_session
->session_name
) + 1;
125 comm
.session_name_len
= session_name_len
;
127 ret
= lttng_dynamic_buffer_append(
128 &payload
->buffer
, &comm
, sizeof(comm
));
134 ret
= lttng_dynamic_buffer_append(&payload
->buffer
,
135 action_rotate_session
->session_name
, session_name_len
);
141 ret
= lttng_rate_policy_serialize(
142 action_rotate_session
->policy
, payload
);
151 static void lttng_action_rotate_session_destroy(struct lttng_action
*action
)
153 struct lttng_action_rotate_session
*action_rotate_session
;
159 action_rotate_session
= action_rotate_session_from_action(action
);
161 lttng_rate_policy_destroy(action_rotate_session
->policy
);
162 free(action_rotate_session
->session_name
);
163 free(action_rotate_session
);
169 ssize_t
lttng_action_rotate_session_create_from_payload(
170 struct lttng_payload_view
*view
,
171 struct lttng_action
**p_action
)
173 ssize_t consumed_len
, ret
;
174 const struct lttng_action_rotate_session_comm
*comm
;
175 const char *session_name
;
176 struct lttng_action
*action
;
177 enum lttng_action_status status
;
178 struct lttng_rate_policy
*policy
= NULL
;
180 action
= lttng_action_rotate_session_create();
186 comm
= (typeof(comm
)) view
->buffer
.data
;
187 session_name
= (const char *) &comm
->data
;
189 if (!lttng_buffer_view_contains_string(
190 &view
->buffer
, session_name
, comm
->session_name_len
)) {
194 consumed_len
= sizeof(*comm
) + comm
->session_name_len
;
198 struct lttng_payload_view policy_view
=
199 lttng_payload_view_from_view(
200 view
, consumed_len
, -1);
201 ret
= lttng_rate_policy_create_from_payload(
202 &policy_view
, &policy
);
210 status
= lttng_action_rotate_session_set_session_name(
211 action
, session_name
);
212 if (status
!= LTTNG_ACTION_STATUS_OK
) {
218 status
= lttng_action_rotate_session_set_rate_policy(action
, policy
);
219 if (status
!= LTTNG_ACTION_STATUS_OK
) {
228 lttng_rate_policy_destroy(policy
);
229 lttng_action_rotate_session_destroy(action
);
234 static enum lttng_error_code
lttng_action_rotate_session_mi_serialize(
235 const struct lttng_action
*action
, struct mi_writer
*writer
)
238 enum lttng_error_code ret_code
;
239 enum lttng_action_status status
;
240 const char *session_name
= NULL
;
241 const struct lttng_rate_policy
*policy
= NULL
;
244 assert(IS_ROTATE_SESSION_ACTION(action
));
246 status
= lttng_action_rotate_session_get_session_name(
247 action
, &session_name
);
248 assert(status
== LTTNG_ACTION_STATUS_OK
);
249 assert(session_name
!= NULL
);
251 status
= lttng_action_notify_get_rate_policy(action
, &policy
);
252 assert(status
== LTTNG_ACTION_STATUS_OK
);
253 assert(policy
!= NULL
);
255 /* Open action rotate session element. */
256 ret
= mi_lttng_writer_open_element(
257 writer
, mi_lttng_element_action_rotate_session
);
263 ret
= mi_lttng_writer_write_element_string(
264 writer
, mi_lttng_element_session_name
, session_name
);
270 ret_code
= lttng_rate_policy_mi_serialize(policy
, writer
);
271 if (ret_code
!= LTTNG_OK
) {
275 /* Close action rotate session element. */
276 ret
= mi_lttng_writer_close_element(writer
);
285 ret_code
= LTTNG_ERR_MI_IO_FAIL
;
290 struct lttng_action
*lttng_action_rotate_session_create(void)
292 struct lttng_action
*action
= NULL
;
293 struct lttng_rate_policy
*policy
= NULL
;
294 enum lttng_action_status status
;
296 /* Create a every N = 1 rate policy. */
297 policy
= lttng_rate_policy_every_n_create(1);
302 action
= zmalloc(sizeof(struct lttng_action_rotate_session
));
307 lttng_action_init(action
, LTTNG_ACTION_TYPE_ROTATE_SESSION
,
308 lttng_action_rotate_session_validate
,
309 lttng_action_rotate_session_serialize
,
310 lttng_action_rotate_session_is_equal
,
311 lttng_action_rotate_session_destroy
,
312 lttng_action_rotate_session_internal_get_rate_policy
,
313 lttng_action_generic_add_error_query_results
,
314 lttng_action_rotate_session_mi_serialize
);
316 status
= lttng_action_rotate_session_set_rate_policy(action
, policy
);
317 if (status
!= LTTNG_ACTION_STATUS_OK
) {
324 lttng_rate_policy_destroy(policy
);
328 enum lttng_action_status
lttng_action_rotate_session_set_session_name(
329 struct lttng_action
*action
, const char *session_name
)
331 struct lttng_action_rotate_session
*action_rotate_session
;
332 enum lttng_action_status status
;
334 if (!action
|| !IS_ROTATE_SESSION_ACTION(action
) || !session_name
||
335 strlen(session_name
) == 0) {
336 status
= LTTNG_ACTION_STATUS_INVALID
;
340 action_rotate_session
= action_rotate_session_from_action(action
);
342 free(action_rotate_session
->session_name
);
344 action_rotate_session
->session_name
= strdup(session_name
);
345 if (!action_rotate_session
->session_name
) {
346 status
= LTTNG_ACTION_STATUS_ERROR
;
350 status
= LTTNG_ACTION_STATUS_OK
;
355 enum lttng_action_status
lttng_action_rotate_session_get_session_name(
356 const struct lttng_action
*action
, const char **session_name
)
358 const struct lttng_action_rotate_session
*action_rotate_session
;
359 enum lttng_action_status status
;
361 if (!action
|| !IS_ROTATE_SESSION_ACTION(action
) || !session_name
) {
362 status
= LTTNG_ACTION_STATUS_INVALID
;
366 action_rotate_session
= action_rotate_session_from_action_const(action
);
368 *session_name
= action_rotate_session
->session_name
;
370 status
= LTTNG_ACTION_STATUS_OK
;
375 enum lttng_action_status
lttng_action_rotate_session_set_rate_policy(
376 struct lttng_action
*action
,
377 const struct lttng_rate_policy
*policy
)
379 enum lttng_action_status status
;
380 struct lttng_action_rotate_session
*rotate_session_action
;
381 struct lttng_rate_policy
*copy
= NULL
;
383 if (!action
|| !policy
|| !IS_ROTATE_SESSION_ACTION(action
)) {
384 status
= LTTNG_ACTION_STATUS_INVALID
;
388 copy
= lttng_rate_policy_copy(policy
);
390 status
= LTTNG_ACTION_STATUS_ERROR
;
394 rotate_session_action
= action_rotate_session_from_action(action
);
396 /* Free the previous rate policy .*/
397 lttng_rate_policy_destroy(rotate_session_action
->policy
);
399 /* Assign the policy. */
400 rotate_session_action
->policy
= copy
;
401 status
= LTTNG_ACTION_STATUS_OK
;
405 lttng_rate_policy_destroy(copy
);
409 enum lttng_action_status
lttng_action_rotate_session_get_rate_policy(
410 const struct lttng_action
*action
,
411 const struct lttng_rate_policy
**policy
)
413 enum lttng_action_status status
;
414 const struct lttng_action_rotate_session
*rotate_session_action
;
416 if (!action
|| !policy
|| !IS_ROTATE_SESSION_ACTION(action
)) {
417 status
= LTTNG_ACTION_STATUS_INVALID
;
421 rotate_session_action
= action_rotate_session_from_action_const(action
);
423 *policy
= rotate_session_action
->policy
;
424 status
= LTTNG_ACTION_STATUS_OK
;
429 static const struct lttng_rate_policy
*
430 lttng_action_rotate_session_internal_get_rate_policy(
431 const struct lttng_action
*action
)
433 const struct lttng_action_rotate_session
*_action
;
434 _action
= action_rotate_session_from_action_const(action
);
436 return _action
->policy
;