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@startuml
participant REST participant ACM_Runtime
participant Participant
database ACM_Database  REST -> ACM_Runtime: [REST] Read all configuration versions of Automation Composition Instance ACM_Runtime -> ACM_Database: Read all configuration versions of Automation Composition Instance ACM_Runtime -> REST: [REST] All configuration versions of Automation Composition Instance returned REST -> REST: Select configuration version of Automation Composition Instance for Instantiation Participants REST -> ACM_Runtime: [REST] Instantiate selected configuration version of Automation Composition Instance on Participants

alt Selected configuration version of Automation Composition Instance not instantiated on Participants   ACM_Runtime -> ACM_Database: Read configuration version of Automation Composition Instance   ACM_Runtime -> Participants: [DMaaP] Update Participants with configuration version of Automation Composition Instance   ACM_Runtime -> REST: [REST] Instantiation of configuration version of Automation Composition Instance ordered on participants
else Selected configuration version of Automation Composition Instance instantiated on Participants   ACM_Runtime -> REST: [REST] configuration version of Automation Composition Instance already instantiated on participants 
end

== Participant Responses ==
Participants -> ACM_Runtime: [DMaaP] Result of update of configuration version of Automation Composition Instance on participant ACM_Runtime -> ACM_Database: Store result of update of configuration version of Automation Composition Instance on participant

== Supervision ==
loop forever   ACM_Runtime -> ACM_Database: Read Automation Composition Instances
  loop over each Automation Composition Instance
    alt Automation Composition Instance configuration version update underway on participants    ACM_Runtime -> ACM_Database: read result of Automation Composition updates from participants
      alt Updates completed on all participants      ACM_Runtime -> ACM_Database: set configuration version of Automation Composition Instance as Instantiated on Participants      ACM_Runtime -> ACM_Database: set overall configuration version of Automation Composition Instance state as Instantiated
      else Updates not completed
        alt Instantiation of Automation Composition Instance on participants timed out        ACM_Runtime -> ACM_Database: set configuration version Automation Composition Instance Instantiation as timed out on Participants        ACM_Runtime -> ACM_Runtime: Log error
        else Wait for updates to complete
        end
      end 
    else Automation Composition Instance configuration version update on participants not underway
    end
  end
end
@enduml

@startuml
participant REST participant ACM_Runtime
participant Participant
database ACM_Database  REST -> ACM_Runtime: [REST] Read all Instantiated Automation Composition Instances ACM_Runtime -> ACM_Database: Read all Instantiated Automation Composition Instances ACM_Runtime -> REST: [REST] All Instantiated Automation Composition Instances returned REST -> REST: Select Automation Composition Instance on which to change state and specify new state REST -> ACM_Runtime: [REST] Change state of selected Automation Composition Instance on Participants

alt Selected Automation Composition Instance instantiated on Participants   ACM_Runtime -> Participants: [DMaaP] Request change of state of Automation Composition Instance   ACM_Runtime -> REST: [REST] Change of state of Automation Composition Instance ordered on participants
else Selected Automation Composition Instance not instantiated on Participants   ACM_Runtime -> REST: [REST] Automation Composition Instance not instantiated on participants 
end

== Participant Responses ==
Participants -> ACM_Runtime: [DMaaP] Result of State Change of Automation Composition Instance on participant ACM_Runtime -> ACM_Database: Store result of State Change of Automation Composition Instance on participant

== Supervision ==
loop forever   ACM_Runtime -> ACM_Database: Read Automation Composition Instances
  loop over each Automation Composition Instance
    alt Automation Composition Instance State Change underway on participants    ACM_Runtime -> ACM_Database: read result of Automation Composition State Change from participants
      alt Updates completed on all participants      ACM_Runtime -> ACM_Database: set Automation Composition Instance state as changed on Participants      ACM_Runtime -> ACM_Database: set overall Automation Composition Instance state as changed
      else Updates not completed
        alt Automation Composition Instance State Change on participants timed out        ACM_Runtime -> ACM_Database: set Automation Composition State Change as timed out on Participants        ACM_Runtime -> ACM_Runtime: Log error
        else Wait for updates to complete
        end
      end 
    else Automation Composition Instance State Change on participants not underway
    end
  end
end
@enduml