ncp-activity.plantuml

@startuml
skinparam roundcorner 20
skinparam ParticipantPadding 20
skinparam BoxPadding 50
skinparam Shadowing false
skinparam NoteBorderColor #444
skinparam NoteBackgroundColor #fff
skinparam NoteFontColor #444
skinparam EntityBackgroundColor #fff
skinparam EntityBorderColor #444
skinparam ArrowFontColor #444
skinparam ArrowColor #444
skinparam ArrowLollipopColor #444
skinparam ArrowThickness 1
skinparam ControlBorderColor #444
skinparam ControlBackgroundColor #fff
skinparam ParticipantBorderColor #444
skinparam ParticipantBackgroundColor #fff
skinparam ParticipantFontSize 17
skinparam ParticipantFontColor #444
skinparam ActorBorderColor #444
skinparam ActorFontColor #444
skinparam ActorFontSize 17
skinparam ActorBackgroundColor #fff
skinparam GroupBorderColor #444
skinparam GroupBorderThickness 1
skinparam GroupHeaderFontColor #444
skinparam GroupFontColor #444
skinparam SequenceLifeLineBorderColor #444
skinparam ActivityBorderColor #444
skinparam ActivityBackgroundColor #fff
skinparam ActivityDiamondBorderColor #444
skinparam ActivityDiamondBackgroundColor #fff

title NestedControlPlane Creation

start

if (NCP exists?) then (no)
    :return nil;
    end
else (yes)
endif

if (deletionTimestamp?) then (yes)
    :handle deletion;
    end
endif

if (component CRs exist?) then (no)
    :emit event;
    :return retryAfter;
    end
else (yes)
    if (has ownerReferences?) then (no)
        :setup OwnerReferences back;
    endif
endif

if (cluster CA/Certs exists?) then (no)
    :call secret.NewCertificatesForInitialControlPlane;
    :store certs as secrets;
    if (errors?) then (yes)
        :return err;
        end
    elseif (error with Conflicts?) then (yes)
        :return retryAfter;
        end
    else (no)
    endif
endif

if (ControlPlaneEndpoint set?) then (no)
    :return nil;
    end
endif


if (admin kubeconfig exists?) then (no)
    :get ControlPlaneEndpoint;
    :create kubeconfig;
    if (errors?) then (yes)
        :return err;
        end
    endif
elseif (kubeconfig owned?) then (no)
    :adopt kubeconfig;
else (yes)
    if (certs need rotation?) then (yes)
        :regenerate and store;
        if (errors?) then (yes)
        :return err;
        end
    endif
    endif
endif

if (conditions updated?) then (no)
    if (etcd managed?) then (yes)
        :try to fetch common status fields;
        if (errors?) then (yes)
            :set etcd as unknown state;
        endif
    endif
    :get nested component statuses;
    :update NestedControlPlane status;
    if (errors?) then (yes)
        :return err;
        end
    endif
endif

:return nil;

end

@enduml