gistfile1.txt

ApiGateway:
    Type: AWS::ApiGateway::RestApi
    Properties:
      EndpointConfiguration:
        Types:
          - 'REGIONAL'
      Body:
        swagger: '2.0'
        info:
          version: 'v1'
          title: !Ref AWS::StackName
        paths:
          /newapi:
            post:
              responses:
                '202':
                  description: Accepted
                  headers:
                    Access-Control-Allow-Origin:
                      type: 'string'
                    Access-Control-Allow-Methods:
                      type: 'string'
                    Access-Control-Allow-Headers:
                      type: 'string'
              x-amazon-apigateway-integration:
                type: 'AWS_PROXY'
                httpMethod: 'POST'
                uri: !Sub 'arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${MyLambda.Arn}/invocations'
                responses:
                  default:
                    statusCode: '202'
                    responseParameters:
                      method.response.header.Access-Control-Allow-Methods: "'OPTIONS,POST'"
                      method.response.header.Access-Control-Allow-Headers: "'Content-Type,Authorization,X-Amz-Date,X-Api-Key,X-Amz-Security-Token'"
                      method.response.header.Access-Control-Allow-Origin: "'*'"