+/*
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <common/error.h>
+#include <common/macros.h>
+#include <common/mi-lttng.h>
+#include <lttng/action/action-internal.h>
+#include <lttng/action/notify-internal.h>
+#include <lttng/action/rate-policy-internal.h>
+#include <lttng/lttng-error.h>
+
+#define IS_NOTIFY_ACTION(action) \
+ (lttng_action_get_type(action) == LTTNG_ACTION_TYPE_NOTIFY)
+
+static struct lttng_action_notify *action_notify_from_action(
+ struct lttng_action *action)
+{
+ LTTNG_ASSERT(action);
+
+ return container_of(action, struct lttng_action_notify, parent);
+}
+
+static const struct lttng_action_notify *action_notify_from_action_const(
+ const struct lttng_action *action)
+{
+ LTTNG_ASSERT(action);
+
+ return container_of(action, struct lttng_action_notify, parent);
+}
+
+static
+void lttng_action_notify_destroy(struct lttng_action *action)
+{
+ struct lttng_action_notify *notify_action;
+ notify_action = action_notify_from_action(action);
+ lttng_rate_policy_destroy(notify_action->policy);
+ free(notify_action);
+}
+
+static
+int lttng_action_notify_serialize(struct lttng_action *action,
+ struct lttng_payload *payload)
+{
+ int ret;
+ struct lttng_action_notify *notify_action;
+
+ if (!action || !IS_NOTIFY_ACTION(action) || !payload) {
+ ret = -1;
+ goto end;
+ }
+
+ DBG("Serializing notify action");
+
+ notify_action = action_notify_from_action(action);
+ DBG("Serializing notify action rate policy");
+ ret = lttng_rate_policy_serialize(notify_action->policy, payload);
+
+end:
+ return ret;
+}
+
+static
+bool lttng_action_notify_is_equal(const struct lttng_action *a,
+ const struct lttng_action *b)
+{
+ const struct lttng_action_notify *_a, *_b;
+
+ _a = action_notify_from_action_const(a);
+ _b = action_notify_from_action_const(b);
+ return lttng_rate_policy_is_equal(_a->policy, _b->policy);
+}
+
+static const struct lttng_rate_policy *
+lttng_action_notify_internal_get_rate_policy(const struct lttng_action *action)
+{
+ const struct lttng_action_notify *_action;
+ _action = action_notify_from_action_const(action);
+
+ return _action->policy;
+}
+
+static enum lttng_error_code lttng_action_notify_mi_serialize(
+ const struct lttng_action *action, struct mi_writer *writer)
+{
+ int ret;
+ enum lttng_action_status status;
+ enum lttng_error_code ret_code;
+ const struct lttng_rate_policy *policy = NULL;
+
+ LTTNG_ASSERT(action);
+ LTTNG_ASSERT(IS_NOTIFY_ACTION(action));
+ LTTNG_ASSERT(writer);
+
+ status = lttng_action_notify_get_rate_policy(action, &policy);
+ LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK);
+ LTTNG_ASSERT(policy != NULL);
+
+ /* Open action notify. */
+ ret = mi_lttng_writer_open_element(
+ writer, mi_lttng_element_action_notify);
+ if (ret) {
+ goto mi_error;
+ }
+
+ ret_code = lttng_rate_policy_mi_serialize(policy, writer);
+ if (ret_code != LTTNG_OK) {
+ goto end;
+ }
+
+ /* Close action notify 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:
+ return ret_code;
+}
+
+struct lttng_action *lttng_action_notify_create(void)
+{
+ struct lttng_rate_policy *policy = NULL;
+ struct lttng_action_notify *notify = NULL;
+ struct lttng_action *action = NULL;
+
+ notify = (lttng_action_notify *) zmalloc(sizeof(struct lttng_action_notify));
+ if (!notify) {
+ goto end;
+ }
+
+ /* Default policy. */
+ policy = lttng_rate_policy_every_n_create(1);
+ if (!policy) {
+ goto end;
+ }
+
+ lttng_action_init(¬ify->parent, LTTNG_ACTION_TYPE_NOTIFY, NULL,
+ lttng_action_notify_serialize,
+ lttng_action_notify_is_equal,
+ lttng_action_notify_destroy,
+ lttng_action_notify_internal_get_rate_policy,
+ lttng_action_generic_add_error_query_results,
+ lttng_action_notify_mi_serialize);
+
+ notify->policy = policy;
+ policy = NULL;
+
+ action = ¬ify->parent;
+ notify = NULL;
+
+end:
+ free(notify);
+ lttng_rate_policy_destroy(policy);
+ return action;
+}
+
+ssize_t lttng_action_notify_create_from_payload(
+ struct lttng_payload_view *view,
+ struct lttng_action **action)
+{
+ enum lttng_action_status status;
+ ssize_t consumed_length;
+ struct lttng_rate_policy *rate_policy = NULL;
+ struct lttng_action *_action = NULL;
+
+ consumed_length = lttng_rate_policy_create_from_payload(
+ view, &rate_policy);
+ if (!rate_policy) {
+ consumed_length = -1;
+ goto end;
+ }
+
+ _action = lttng_action_notify_create();
+ if (!_action) {
+ consumed_length = -1;
+ goto end;
+ }
+
+ status = lttng_action_notify_set_rate_policy(_action, rate_policy);
+ if (status != LTTNG_ACTION_STATUS_OK) {
+ consumed_length = -1;
+ goto end;
+ }
+
+ *action = _action;
+ _action = NULL;
+
+end:
+ lttng_rate_policy_destroy(rate_policy);
+ lttng_action_destroy(_action);
+ return consumed_length;
+}
+
+enum lttng_action_status lttng_action_notify_set_rate_policy(
+ struct lttng_action *action,
+ const struct lttng_rate_policy *policy)
+{
+ enum lttng_action_status status;
+ struct lttng_action_notify *notify_action;
+ struct lttng_rate_policy *copy = NULL;
+
+ if (!action || !policy || !IS_NOTIFY_ACTION(action)) {
+ status = LTTNG_ACTION_STATUS_INVALID;
+ goto end;
+ }
+
+ copy = lttng_rate_policy_copy(policy);
+ if (!copy) {
+ status = LTTNG_ACTION_STATUS_ERROR;
+ goto end;
+ }
+
+ notify_action = action_notify_from_action(action);
+
+ /* Free the previous rate policy .*/
+ lttng_rate_policy_destroy(notify_action->policy);
+
+ /* Assign the policy. */
+ notify_action->policy = copy;
+ status = LTTNG_ACTION_STATUS_OK;
+ copy = NULL;
+
+end:
+ lttng_rate_policy_destroy(copy);
+ return status;
+}
+
+enum lttng_action_status lttng_action_notify_get_rate_policy(
+ const struct lttng_action *action,
+ const struct lttng_rate_policy **policy)
+{
+ enum lttng_action_status status;
+ const struct lttng_action_notify *notify_action;
+
+ if (!action || !policy || !IS_NOTIFY_ACTION(action)) {
+ status = LTTNG_ACTION_STATUS_INVALID;
+ goto end;
+ }
+
+ notify_action = action_notify_from_action_const(action);
+
+ *policy = notify_action->policy;
+ status = LTTNG_ACTION_STATUS_OK;
+end:
+ return status;
+}