amazon-web-services - 如何在CloudFormation模板中同时使用Sub和GetAtt函数？

我创建了CloudFormation yaml模板，并且需要在“AWS::ApiGateway::Method”集成Uri中使用!GetAtt "TestLambda.Arn"作为!Sub函数的一部分:

...
Type: "AWS::ApiGateway::Method"
  Properties:
    RestApiId:
      Ref: "RestApi"
    ResourceId:
      Ref: "TestResource"
    HttpMethod: "GET"
    AuthorizationType: "NONE"
    Integration:
      Type: "AWS_PROXY"
      IntegrationHttpMethod: "POST"
      Uri: !Sub "arn:aws:apigateway:us-east-1:lambda:path/2015-03-31/functions/[[place where I want to use !GetAtt "TestLambda.Arn"]]/invocations"
...

结果，我想得到一个像这样的值:

"arn:aws:apigateway:us-east-1:lambda:path/2015-03-31/functions/my-endpoint-lambda/invocations"

如何一起使用这些功能并获得期望的结果？

最佳答案

您无需在此处使用!GetAtt，如果将它们放在占位符中，!Sub将自动为您解压缩值:

Uri: !Sub arn:aws:apigateway:us-east-1:lambda:path/2015-03-31/functions/${TestLambda.Arn}/invocations

这在docs中进行了解释: