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invalid cron expression get passed in boto3.client("event").put_rule() function

See original GitHub issue

For example this invalid cron expression, cron(0/5, 9-18, ?, *, MON-FRI, *)

import boto3

client = boto3.client("events")
rule_name = "test"
cron_expression = "cron(0/5, 9-18, ?, *, MON-FRI, *)"
client.put_rule(
    Name=rule_name,
    ScheduleExpression=cron_expression,
    State='ENABLED',
)

if you run the code, there’s no exception reported about invalid cron expression, is this a new feature or a bug? if this is not a bug, then there’s a bug in the aws console, if I put this cronexpression, I would not get any samples.

Issue Analytics

State:
Created 2 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

stobrien89commented, Jan 7, 2022

Hi @HCharlie,

Just wanted to let you know that the events team has been working on this, but we don’t have a definitive fix as of yet. For the time being, I’m going to close this and open a new issue in our shared SDKs repository for tracking. Please let me know if you have any questions!

1reaction

stobrien89commented, May 21, 2021

Hi @HCharlie,

Thanks for reporting! I just tested and confirmed that you can pass the expression in both the console and the SDKs. This would be an issue with the EventBridge PutRule API— I can see they do some shape and value validation, but it looks like it’s not refined enough to catch something like this. I’ll reach out to determine whether or not this is expected behavior.

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