AWS::Events::Rule ScheduleExpression: "cron(* 1 * * * *)"

[jtheuer]

cfn-lint version: (cfn-lint 0.27.5)

Description of issue.

  EventRule:
    Type: "AWS::Events::Rule"
    Properties:
      ScheduleExpression: "cron(* 1 * * * *)" 
      State: "ENABLED"
      Targets:
        - Arn: !Ref Foo
          Id: "Foo"
          RoleArn: !GetAtt FooArn.Arn

Check should be probably in:

src/cfnlint/rules/resources/events/RuleScheduleExpression.py

The above ScheduleExpression is invalid (need a value for minute if hour is set). For example cron(0 1 * * ? *)

---

Schedule Expressions for Rules documentation

[kddejong]

@jtheuer I can get * 1 * * ? * to work. Are you getting an error in this situation? I'm seeing this in the documentation.

You can't specify the Day-of-month and Day-of-week fields in the same cron expression.
If you specify a value (or a *) in one of the fields, you must use a ? (question mark) in the other. 

Which was also corrected in your example and seems like an easy rule we can write. Thoughts?

[jtheuer]

Hi @kddejong Yes, * 1 * * ? *is correct. The example from the CF snippet above is invalid but didn't raise an error. Thanks for tackling this.

[PatMyron]

main issue for AWS::Events::Rule.ScheduleExpression: #816