definition-body.yaml

DefinitionBody:
  swagger: 2.0
  info:
    title: !Ref AWS::StackName

  paths:
    /ingest:
      post:
        consumes:
          - application/json
        produces:
          - application/json

        responses:
          "200":
            statusCode: "200"
            description: "OK"

        x-amazon-apigateway-integration:
          httpMethod: POST
          statusCode: 200
          type: AWS
          credentials: !GetAtt SnsPublishRole.Arn
          uri: !Sub arn:aws:apigateway:${AWS::Region}:sns:path//
          passthroughBehaviour: NEVER
          requestParameters:
            integration.request.header.Content-Type: "'application/x-www-form-urlencoded'"
          requestTemplates:
            application/json: !Sub
              - |
                Action=Publish##
                &Version=2010-03-31##
                &TopicArn=$util.urlEncode('${Topic}')##
                &Message=$util.urlEncode($input.json('$'))##
                &MessageAttributes.entry.1.Name=event##
                &MessageAttributes.entry.1.Value.StringValue=EventReceived##
                &MessageAttributes.entry.1.Value.DataType=String
              - Topic: !Ref EventReceived
          responses:
            "2\\d{2}":
              statusCode: "200"