schema_version: 1
diagram_type: sequence
meta:
  title: Device provisioning
  output: device-provisioning.html
decisions: [mqtt-with-mutual-tls]
participants:
  - { ref: installer }
  - { ref: provisioning }
  - { ref: device-registry, label: Devices }
  - { ref: heat-pump }
  - { ref: mqtt-broker }
messages:
  - { from: installer, to: provisioning, y: 160, label: register serial, variant: emphasis }
  - { from: provisioning, to: device-registry, y: 210, label: store device }
  - { from: provisioning, to: installer, y: 260, label: certificate, variant: return }
  - { from: installer, to: heat-pump, y: 310, label: load certificate }
  - { from: heat-pump, to: mqtt-broker, y: 360, label: connect mTLS, variant: emphasis }
  - { from: mqtt-broker, to: provisioning, y: 410, label: check revocation }
  - { from: mqtt-broker, to: heat-pump, y: 460, label: CONNACK, variant: return }