example.yaml

asyncapi: 2.0.0
info:
  title: JSON echo
  version: '1.0'
servers:
  dev:
    url: localhost:8080
    protocol: ws
channels:
  /ping:
    subscribe:
      operationId: onPing
      message:
        $ref: '#/components/messages/Response'
    publish:
      operationId: sendPing
      message:
        $ref: '#/components/messages/string'
    bindings:
      ws:
        method: GET
components:
  schemas:
    Response:
      required:
      - seqNo
      - data
      - valid
      type: object
      properties:
        seqNo:
          type: integer
        data:
          type: string
        valid:
          type: boolean
  messages:
    string:
      payload:
        type: string
      contentType: text/plain
    Response:
      payload:
        $ref: '#/components/schemas/Response'
      contentType: application/json