@startuml
actor Client as C
participant "API Server" as A
participant "Core Manager" as core
participant "Infrastructure Manager" as infra
participant "Bootstrap Manager" as boot

core --> A: watch for machines and clusters
infra --> A: watch for InfraMachines, InfraClusters, Machines, and Clusters
boot --> A: watch for BootstrapConfigs and Machines

C -> A: Create a Cluster
A -> core: Cluster has been created
activate core
note right of core
    Cluster Controller
endnote
core -> core: Requeue until InfraCluster is marked as ready

C -> A: Create an InfraCluster
A -> infra: InfraCluster created
activate infra
note right of infra
    InfraCluster Controller
endnote
infra -> infra: Requeue until there\nis an associated Cluster

C -> A: Add an InfrastructureRef to Cluster
infra -> infra: InfraCluster has associated Cluster
infra -> infra: Provision necessary Cluster-level\ninfrastructure
infra -> A: Update InfraCluster as Ready
deactivate infra

core -> core: Cluster marked as ready
core -> A: Update Cluster
deactivate core

C -> A: Create a Machine
A -> core: Machine has been created
activate core
note right of core
    Machine Controller
endnote
core -> core: Requeue until Machine has BootstrapConfig data

C -> A: Create a BootstrapConfig
A -> boot: BootstrapConfig created
activate boot
note right of boot
    BootstrapConfig Controller
endnote
boot -> boot: Requeue unitl there\nis an associated Machine

C -> A: Add a BootstrapRef to Machine
boot -> boot: Generate bootstrap data for Machine
boot -> A: Update BootstrapConfig
deactivate boot

core -> core: Machine has Bootstrap Data
core -> core: Requeue until InfraMachine is ready

C -> A: Create InfraMachine
A -> infra: InfraMachine created
activate infra
note right of infra
    InfraMachine controller
endnote
infra -> infra: Requeue until there\nis an associated Machine

C -> A: Add an InfrastructureRef to Machine
infra -> infra: InfraMachine has associated Machine
infra -> infra: Provision necessary infrastructure\nrepresenting a Machine
infra -> A: Update InfraMachine as ready
deactivate infra

core -> core: InfraMachine marked as ready
core -> core: Get a reference to the node
core -> A: Mark Machine as ready
deactivate core

@enduml