Question

我在Serverless.yaml文件中有一个策略，如下所述。

    AppSyncDynamoDBPolicy:
      Type: AWS::IAM::ManagedPolicy
      Properties:
        Description: 'Managed policy' 
        Path: /appsync/
        PolicyDocument:
          Version: 2012-10-17
          Statement:
            - Effect: Allow
              Action: 
                - dynamodb:GetItem
                - dynamodb:PutItem
                - dynamodb:DeleteItem
                - dynamodb:UpdateItem
                - dynamodb:Query
                - dynamodb:Scan
                - dynamodb:BatchGetItem
                - dynamodb:BatchWriteItem
              Resource: 
                Fn::Join: 
                  - ""
                  - - Fn::GetAtt: [dslvehicleState, Arn]
                    - "*"

当sls部署完成时，它会引发下面提到的错误。

发生错误：AppSyncDynamoDBPolicy-策略中的语法错误。（服务：AmazonIdentityManagement；状态代码：400；错误代码：格式错误的政策文件；要求编号： 166ba0b3-cc67-11e8-8f74-3339d857f829）。

我在这里想念什么？

Answer 1

使用Ref方法进行尝试：

AppSyncDynamoDBPolicy:
  Type: AWS::IAM::ManagedPolicy
  Properties:
    Description: 'Managed policy' 
    Path: /appsync/
    PolicyDocument:
      Version: 2012-10-17
      Statement:
        - Effect: Allow
          Action: 
            - dynamodb:GetItem
            - dynamodb:PutItem
            - dynamodb:DeleteItem
            - dynamodb:UpdateItem
            - dynamodb:Query
            - dynamodb:Scan
            - dynamodb:BatchGetItem
            - dynamodb:BatchWriteItem
          Resource: 
            Fn::Join: 
              - ""
              - - "Ref": "dslvehicleState"
                - "*"

Answer 2

AppSyncDynamoDBPolicy:
  Type: AWS::IAM::ManagedPolicy
  Properties:
    Description: 'Managed policy' 
    Path: /appsync/
    PolicyDocument:
      Version: 2012-10-17
      Statement:
        - Effect: Allow
          Action: 
            - dynamodb:GetItem
            - dynamodb:PutItem
            - dynamodb:DeleteItem
            - dynamodb:UpdateItem
            - dynamodb:Query
            - dynamodb:Scan
            - dynamodb:BatchGetItem
            - dynamodb:BatchWriteItem
          Resource: !GetAtt "dslvehicleState.Arn"

您可以了解有关返回值here的更多信息。

Answer 3

检查并重试后，我发现应使用''

进行小数转换

AppSyncDynamoDBPolicy:
  Type: AWS::IAM::ManagedPolicy
  Properties:
    Description: 'Managed policy' 
    Path: /appsync/
    PolicyDocument:
      Version: '2012-10-17'
      Statement:
        - Effect: Allow
          Action: 
            - 'dynamodb:GetItem'
            - 'dynamodb:PutItem'
            - 'dynamodb:DeleteItem'
            - 'dynamodb:UpdateItem'
            - 'dynamodb:Query'
            - 'dynamodb:Scan'
            - 'dynamodb:BatchGetItem'
            - 'dynamodb:BatchWriteItem'
          Resource: 
            Fn::Join: 
              - ""
              - - Fn::GetAtt: [dslvehicleState, Arn]
                - "*"

替换以下设置后，效果很好

版本：“ 2012-10-17” 行动： -'dynamodb：GetItem' -'dynamodb：PutItem' -'dynamodb：DeleteItem' -'dynamodb：UpdateItem' -'dynamodb：Query' -'dynamodb：Scan' -'dynamodb：BatchGetItem' -'dynamodb：BatchWriteItem'

如何在无服务器框架YAML中使用Fn :: Join？

3 个答案: