# CTR-nn · contracts/asyncapi/<domain>-events.yaml — AsyncAPI 3.0
# Nguồn: ICD_<P> §4 (hợp đồng sự kiện) · DOM_<P> §5 (domain event) · DAT §4.1 (outbox/saga) · SEC §5 (PII)
# Quy ước: at-least-once, người nhận khử trùng bằng eventId; breaking change ⇒ eventVersion mới + channel mới
asyncapi: 3.0.0
info:
  title: <Domain> Events
  version: 1.0.0
  description: |
    Sự kiện phát từ CMP-nn qua IF-nnn. File này THẮNG bảng ICD §4 khi lệch.
    Không chứa PII ngoài id trừ khi SEC §5 cho phép đích danh.
defaultContentType: application/json
servers:
  prod:
    host: <broker-host>
    protocol: sqs   # kafka | sqs | amqp | eventbridge
    description: production
channels:
  orderPlaced:
    address: <domain>.<event>.v1
    description: Phát khi aggregate <Root> commit xong (DOM §5); publish qua outbox (ADR-nnn)
    messages:
      OrderPlaced:
        $ref: '#/components/messages/OrderPlaced'
operations:
  publishOrderPlaced:
    action: send
    channel: { $ref: '#/channels/orderPlaced' }
    summary: CMP-nn publish — IF-nnn
    x-if: IF-nnn
    x-producer: CMP-nn
    x-consumers: [CMP-06, CMP-09]
    x-ordering: theo partition key <aggregateId>
    x-delivery: at-least-once · DLQ giữ 14 ngày (FAIL FM-nn)
components:
  messages:
    OrderPlaced:
      name: OrderPlaced
      title: Đơn hàng đã đặt
      contentType: application/json
      headers:
        $ref: '#/components/schemas/EventHeaders'
      payload:
        $ref: '#/components/schemas/OrderPlacedPayload'
      examples:
        - name: ok
          headers: { eventId: "018f…", eventVersion: "1.0", occurredAt: "2026-09-22T03:00:00Z", correlationId: "req-…" }
          payload: { orderId: "018f…", customerId: "018e…", sellerIds: ["018d…"], totalAmount: { amount: "150000.00", currency: "VND" } }
  schemas:
    EventHeaders:
      type: object
      required: [eventId, eventVersion, occurredAt, correlationId]
      properties:
        eventId: { type: string, description: 'Khoá khử trùng cho consumer (ICD §4)' }
        eventVersion: { type: string, pattern: '^[0-9]+\.[0-9]+$' }
        occurredAt: { type: string, format: date-time }
        correlationId: { type: string, description: 'Truyền xuyên suốt từ request gốc (ICD §1 điểm 8)' }
    Money:
      type: object
      required: [amount, currency]
      properties:
        amount: { type: string, pattern: '^-?[0-9]+(\.[0-9]{1,2})?$' }
        currency: { type: string, minLength: 3, maxLength: 3 }
    OrderPlacedPayload:
      type: object
      additionalProperties: false
      required: [orderId, sellerIds, totalAmount]
      properties:
        orderId: { type: string }
        customerId: { type: [string, 'null'], description: 'null = Guest' }
        sellerIds: { type: array, items: { type: string }, minItems: 1 }
        totalAmount: { $ref: '#/components/schemas/Money' }