Module attention 

The blocking problems the Needs attention queue attributes rows to, read the way the alert rules read them.

Constants

PHASE_HEARTBEAT_INTERVAL_MULTIPLIER

A phase is late once this many of its own intervals have passed without a heartbeat.

Functions

attention_rules

The rules every Needs attention count is taken under: the shared thresholds, and the blocking problems as they stand now.

is_heartbeat_late

Whether a phase’s last heartbeat is older than PHASE_HEARTBEAT_INTERVAL_MULTIPLIER of its intervals. A paused phase is never late.