2.10. AlertInfo

Represents an alert configuration and its trigger conditions. The AlertInfo class stores metadata and logic for determining when an alert should be triggered based on value comparisons and timing constraints.

The structure contains the following fields:

• `id` (AlertId) — Unique identifier for the alert.

• `alert_kind` (AlertKind) — Type of alert (e.g., NEW_DATA_ALERT, NO_DATA_ALERT).

• `name` (std::string) — Human-readable name of the alert.

• `domain_id` (EntityId) — DDS domain ID associated with the alert.

• `host_name`, `user_name`, `topic_name` (std::string) — Entity identifiers used to locate monitored entities. Empty strings act as wildcards.

• `cmp` (AlertComparison) — Comparison operator used for threshold evaluation (GT = greater than, LT = less than).

• `trigger_threshold` (double) — Numeric threshold that triggers the alert when crossed.

• `last_trigger_ts` (std::chrono::system_clock::time_point) — Timestamp of the last time the alert was triggered.

• `time_between_triggers` (std::chrono::milliseconds) — Minimum time interval between consecutive triggers.

• `timeout_enabled` (bool) — Whether timeout-based triggering is enabled.

• `time_to_timeout` (std::chrono::milliseconds) — Duration without data before a timeout alert is raised.

• `last_timeout_check_ts` (std::chrono::system_clock::time_point) — Timestamp of the last timeout condition check.

• `notifiers` (std::vector<NotifierId>) — List of notifier identifiers; each notifier represents a callback or action executed when the alert triggers.