@startuml
participant CLAMP_Runtime
database Database

== Control Loop Instance Statistics ==

loop forever
  CLAMP_Runtime -> Database: Read Control Loop Instance Statistics
  CLAMP_Runtime -> CLAMP_Runtime: Summarise Control Loop Instance Statistics
  CLAMP_Runtime -> Database: Store summarised Control Loop Instance Statistics
  CLAMP_Runtime -> Database: Delete Control Loop Instance Statistics on which retention period has expired
end

== Participant Statistics ==

loop forever
  CLAMP_Runtime -> Database: Read Participant Statistics
  loop Over each Participant
    alt Participant has not reported in last reporting window
       CLAMP_Runtime -> CLAMP_Runtime: Log Participant as having missed a report
       CLAMP_Runtime -> Database: Increment missed report counter on Participant
       alt Participant has exceeded alarm threshold on missed report counter
          CLAMP_Runtime -> CLAMP_Runtime: Raise a Participant Offline alarm on participant
          CLAMP_Runtime -> Database: Mark participant as being offline
       end
    else Participant has reported in last reporting window
       CLAMP_Runtime -> Database: Clear missed report counter on Participant
       alt Participant marked as being offline
          CLAMP_Runtime -> CLAMP_Runtime: Clear Participant Offline alarm on participant
          CLAMP_Runtime -> Database: Mark participant as being online
       end
    end
  end
end

@enduml