amazon-web-services - 如何在 AWS SAM 模板中包含 CloudWatch 组和流？

Question

作为 SAM 模板的一部分，我想创建一个日志组和两个日志流。最初的想法是:

myLogGroup:
    Type: 'AWS::Logs::LogGroup'
    Properties:
        LogGroupName: 'myLogGroup'
        RetentionInDays: 180

myLogStream:
    Type: 'AWS::Logs::LogStream'
    Properties:
        LogGroupName: 'myLogGroup'
        LogStreamName: 'myLogStream'

不幸的是，当尝试部署应用程序时，我在事件日志中收到错误:

12:24:32 UTC+0200   CREATE_COMPLETE     AWS::Logs::LogGroup    myLogGroup   
12:24:31 UTC+0200   CREATE_IN_PROGRESS  AWS::Logs::LogGroup    myLogGroup   Resource creation Initiated
12:24:31 UTC+0200   CREATE_FAILED       AWS::Logs::LogStream   myLogStream    The specified log group does not exist
12:24:31 UTC+0200   CREATE_IN_PROGRESS  AWS::Logs::LogGroup    myLogGroup
12:24:31 UTC+0200   CREATE_IN_PROGRESS  AWS::Logs::LogStream   myLogStream

有没有办法让AWS等待组创建？

Answer 1

找到了此问题的另一个解决方案。每个资源可以有一个 DependsOn指向另一个资源的属性。例如:

myLogGroup:
    Type: 'AWS::Logs::LogGroup'
    Properties:
        LogGroupName: 'myLogGroup'
        RetentionInDays: 180

myLogStream:
    DependsOn: 'myLogGroup'
    Type: 'AWS::Logs::LogStream'
    Properties:
        LogGroupName: 'myLogGroup'
        LogStreamName: 'myLogStream'

这样，CloudFormation 将等待创建流，直到创建日志组。