@startuml
skinparam maxMessageSize 100

actor "Administrator"

== Initialization ==

"Administrator" -> "Decision Engine" : Start all services
"Decision Engine" -> "Background Task Scheduler" : Start

activate "Background Task Scheduler"
"Background Task Scheduler" -> "Cluster Model Collector Loader"\
: List available cluster data models
"Cluster Model Collector Loader" --> "Background Task Scheduler"\
: list of BaseClusterModelCollector instances

loop for every available cluster data model collector
    "Background Task Scheduler" -> "Background Task Scheduler"\
    : add periodic synchronization job
    create "Jobs Pool"
    "Background Task Scheduler" -> "Jobs Pool" : Create sync job
end
deactivate "Background Task Scheduler"

hnote over "Background Task Scheduler" : Idle

== Job workflow ==

"Background Task Scheduler" -> "Jobs Pool" : Trigger synchronization job
"Jobs Pool" -> "Nova Cluster Data Model Collector" : synchronize

activate "Nova Cluster Data Model Collector"
    "Nova Cluster Data Model Collector" -> "Nova API"\
    : Fetch needed data to build the cluster data model
    "Nova API" --> "Nova Cluster Data Model Collector" : Needed data
    "Nova Cluster Data Model Collector" -> "Nova Cluster Data Model Collector"\
    : Build an in-memory cluster data model
    ]o<-- "Nova Cluster Data Model Collector" : Done
deactivate "Nova Cluster Data Model Collector"

@enduml