amazon-web-services - 目标的 AWS::Events::Rule 输入不是有效的 JSON 文本

Question

我的 SAM template.yml 中有以下资源:

MetricsRule:
  Type: AWS::Events::Rule
  Properties:
    Name: MetricsRule
    Description: Puts metrics to the CloudWatch log group
    EventBusName: !FindInMap [LambdaConfig, !Ref stage, eventBusName]
    EventPattern:
      detail:
        status:
          - GENERATED
    State: !FindInMap [LambdaConfig, !Ref stage, eventEnabled]
    Targets:
      - Id: LogGroupTarget
        Arn: !Sub "arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:${LogGroup}"
        InputTransformer:
          InputPathsMap:
            customer-id: $.detail.customerId
            destination-type: $.detail.destinationType
            provider-id: $.detail.providerId
          InputTemplate: '"cusId = <customer-id> - <destination-type> for <provider-id>"'

如果我尝试部署此堆栈，它会失败并出现异常 Input for target LogGroupTarget is not a valid JSON text.

更新:

如果我输入 InputTemplate如'{"message":"cusId = <customer-id> - <destination-type> for <provider-id>"}'它会起作用的。但是，在文档、示例中，甚至在 UI 字段的占位符中，Input Template: A string containing placeholders which will be filled with values defined in Input Paths e.g. "The state of Instance <instance> is <state>" 都表明了这一点。

是否有任何选项可以指定 InputTemplate作为字符串？

谢谢。

Answer 1

希望作者找到答案。
但也只是在这里得到答案。
这应该有效:

  InputTemplate: |
    "cusId = <customer-id> - <destination-type> for <provider-id>"

更多信息在这里:https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-events-rule-inputtransformer.html