#include <common/credentials.h>
#include <common/dynamic-array.h>
#include <common/error.h>
+#include <common/mi-lttng.h>
#include <common/optional.h>
#include <common/payload-view.h>
#include <common/payload.h>
#include <lttng/condition/event-rule-matches-internal.h>
#include <lttng/condition/event-rule-matches.h>
#include <lttng/domain.h>
+#include <lttng/error-query-internal.h>
#include <lttng/event-expr-internal.h>
#include <lttng/event-rule/event-rule-internal.h>
#include <lttng/trigger/trigger-internal.h>
{
pthread_mutex_unlock(&trigger->lock);
}
+
+LTTNG_HIDDEN
+enum lttng_error_code lttng_trigger_mi_serialize(const struct lttng_trigger *trigger,
+ struct mi_writer *writer,
+ const struct mi_lttng_error_query_callbacks
+ *error_query_callbacks)
+{
+ int ret;
+ enum lttng_error_code ret_code;
+ enum lttng_trigger_status trigger_status;
+ const struct lttng_condition *condition = NULL;
+ const struct lttng_action *action = NULL;
+ struct lttng_dynamic_array action_path_indexes;
+ uid_t owner_uid;
+
+ assert(trigger);
+ assert(writer);
+
+ lttng_dynamic_array_init(&action_path_indexes, sizeof(uint64_t), NULL);
+
+ /* Open trigger element. */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_trigger);
+ if (ret) {
+ goto mi_error;
+ }
+
+ trigger_status = lttng_trigger_get_owner_uid(trigger, &owner_uid);
+ assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
+
+ /* Name. */
+ ret = mi_lttng_writer_write_element_string(
+ writer, config_element_name, trigger->name);
+ if (ret) {
+ goto mi_error;
+ }
+
+ /* Owner uid. */
+ ret = mi_lttng_writer_write_element_signed_int(writer,
+ mi_lttng_element_trigger_owner_uid,
+ (int64_t) owner_uid);
+ if (ret) {
+ goto mi_error;
+ }
+
+ /* Condition. */
+ condition = lttng_trigger_get_const_condition(trigger);
+ assert(condition);
+ ret_code = lttng_condition_mi_serialize(
+ trigger, condition, writer, error_query_callbacks);
+ if (ret_code != LTTNG_OK) {
+ goto end;
+ }
+
+ /* Action. */
+ action = lttng_trigger_get_const_action(trigger);
+ assert(action);
+ ret_code = lttng_action_mi_serialize(trigger, action, writer,
+ error_query_callbacks, &action_path_indexes);
+ if (ret_code != LTTNG_OK) {
+ goto end;
+ }
+
+ if (error_query_callbacks && error_query_callbacks->trigger_cb) {
+ struct lttng_error_query_results *results = NULL;
+
+ ret_code = error_query_callbacks->trigger_cb(trigger, &results);
+ if (ret_code != LTTNG_OK) {
+ goto end;
+ }
+
+ ret_code = lttng_error_query_results_mi_serialize(
+ results, writer);
+ lttng_error_query_results_destroy(results);
+ if (ret_code != LTTNG_OK) {
+ goto end;
+ }
+ }
+
+ /* Close trigger element. */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ goto mi_error;
+ }
+
+ ret_code = LTTNG_OK;
+ goto end;
+
+mi_error:
+ ret_code = LTTNG_ERR_MI_IO_FAIL;
+end:
+ lttng_dynamic_array_reset(&action_path_indexes);
+ return ret_code;
+}
+
+/* Used by qsort, which expects the semantics of strcmp(). */
+static int compare_triggers_by_name(const void *a, const void *b)
+{
+ const struct lttng_trigger *trigger_a =
+ *((const struct lttng_trigger **) a);
+ const struct lttng_trigger *trigger_b =
+ *((const struct lttng_trigger **) b);
+ const char *name_a, *name_b;
+ enum lttng_trigger_status trigger_status;
+
+ /* Anonymous triggers are not reachable here. */
+ trigger_status = lttng_trigger_get_name(trigger_a, &name_a);
+ assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
+
+ trigger_status = lttng_trigger_get_name(trigger_b, &name_b);
+ assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
+
+ return strcmp(name_a, name_b);
+}
+
+LTTNG_HIDDEN
+enum lttng_error_code lttng_triggers_mi_serialize(const struct lttng_triggers *triggers,
+ struct mi_writer *writer,
+ const struct mi_lttng_error_query_callbacks
+ *error_query_callbacks)
+{
+ int ret;
+ enum lttng_error_code ret_code;
+ enum lttng_trigger_status status;
+ unsigned int count, i;
+ struct lttng_dynamic_pointer_array sorted_triggers;
+
+ assert(triggers);
+ assert(writer);
+
+ /*
+ * Sort trigger by name to ensure an order at the MI level and ignore
+ * any anonymous trigger present.
+ */
+ lttng_dynamic_pointer_array_init(&sorted_triggers, NULL);
+
+ status = lttng_triggers_get_count(triggers, &count);
+ assert(status == LTTNG_TRIGGER_STATUS_OK);
+
+ for (i = 0; i < count; i++) {
+ int add_ret;
+ const char *unused_name;
+ const struct lttng_trigger *trigger =
+ lttng_triggers_get_at_index(triggers, i);
+
+ status = lttng_trigger_get_name(trigger, &unused_name);
+ switch (status) {
+ case LTTNG_TRIGGER_STATUS_OK:
+ break;
+ case LTTNG_TRIGGER_STATUS_UNSET:
+ /* Don't list anonymous triggers. */
+ continue;
+ default:
+ abort();
+ }
+
+ add_ret = lttng_dynamic_pointer_array_add_pointer(
+ &sorted_triggers, (void *) trigger);
+
+ if (add_ret) {
+ ERR("Failed to lttng_trigger to sorting array.");
+ ret_code = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ }
+
+ qsort(sorted_triggers.array.buffer.data, count,
+ sizeof(struct lttng_trigger *),
+ compare_triggers_by_name);
+
+ /* Open triggers element. */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_triggers);
+ if (ret) {
+ ret_code = LTTNG_ERR_MI_IO_FAIL;
+ goto error;
+ }
+
+ for (i = 0; i < lttng_dynamic_pointer_array_get_count(&sorted_triggers); i++) {
+ const struct lttng_trigger *trigger =
+ (const struct lttng_trigger *)
+ lttng_dynamic_pointer_array_get_pointer(
+ &sorted_triggers, i);
+
+ lttng_trigger_mi_serialize(trigger, writer, error_query_callbacks);
+ }
+
+ /* Close triggers element. */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ ret_code = LTTNG_ERR_MI_IO_FAIL;
+ goto error;
+ }
+
+ ret_code = LTTNG_OK;
+
+error:
+ lttng_dynamic_pointer_array_reset(&sorted_triggers);
+ return ret_code;
+}
projects / lttng-tools.git / blobdiff