node.js - 无法在 serverless.yml 中引用 CloudFormation 资源。变量 UserPoolId 的变量引用语法无效

Question

我正在使用无服务器框架将无服务器应用程序部署到 AWS。但是，CloudFormation 部分未按预期工作。我在网上查了一下，没有发现我的 YAML 有任何问题。

我正在创建 UserPool，然后使用 CloudFormation 创建 UserPoolClient。我有以下用于 resources:

的 YAML

    resources:
      Resources:
        HttpBucket:
          Type: "AWS::S3::Bucket"
          Properties:
            BucketName: ${self:service}-${UserPoolId}
            AccessControl: PublicRead
            WebsiteConfiguration:
              IndexDocument: index.html
        UserPool:
          Type: "AWS::Cognito::UserPool"
          Properties:
            UserPoolName: ${self:service}-user-pool
            MfaConfiguration: "OFF"
            EmailVerificationSubject: "Your verification code"
            EmailVerificationMessage: "Your verification code is {####}. "  
            Schema:
              - Name: name
                AttributeDataType: String
                Mutable: true
                Required: true
              - Name: email
                AttributeDataType: String
                Mutable: false
                Required: true
              - Name: teamName
                AttributeDataType: String
                Mutable: true
                Required: false
              - Name: custom:supportedTeam
                AttributeDataType: String
                Mutable: true
                Required: false
              - Name: custom:payment
                AttributeDataType: String
                Mutable: true
                Required: false
                DeveloperOnlyAttribute: true
            UsernameAttributes:
              - email
            AutoVerifiedAttributes:
              - email
            AdminCreateUserConfig:
              InviteMessageTemplate:
                EmailMessage: 'Your username is {username} and temporary password is {####}. '
                EmailSubject: Your temporary password
                SMSMessage: 'Your username is {username} and temporary password is {####}. '
              UnusedAccountValidityDays: 7
              AllowAdminCreateUserOnly: false
            Policies:
              PasswordPolicy:
                RequireLowercase: true
                RequireSymbols: false
                RequireNumbers: true
                MinimumLength: 6
                RequireUppercase: true
        UserPoolClient:
          Type: "AWS::Cognito::UserPoolClient"
          Properties:
            ClientName: ${self:service}-client
            GenerateSecret: false
            UserPoolId: 
              Ref: UserPool
      Outputs:
        UserPoolId:
          Value: 
            Ref: UserPool
          Export:
            Name: "UserPool::Id"
        UserPoolClientId:
          Value: 
            Ref: UserPoolClient
          Export:
            Name: "UserPoolClient::Id"

在指定 UserPoolClient(用作 UserPoolId)时，我无法引用 UserPool。

以下内容:

UserPoolId: 
  Ref: UserPool

产生错误:

Invalid variable reference syntax for variable UserPoolId. You can only reference env vars, options, & files. You can check our docs for more info.

我不确定的另一件事是，我看到有人共享包含以下语法的 YAML:

UserPoolId: !Ref UserPool

但它也失败了，并且出现了有关无效语法的错误(由于 !Ref)。谁能帮我解决这个问题？

Answer 1

在离开计算机一段时间后，我认为问题可能出在其他地方，这里就是这种情况。

我在环境变量下使用 ${UserPoolId} 并意识到这就是问题所在。我改成下面的方式，问题解决了。我没有正确引用用户池 ID(它引用了名为 UserPoolId 的 serverless.yml 局部变量，该变量不存在)

userPoolId: 
      Ref: UserPool

这只是我的错误，现在已经解决了。