Can 'codestar connections used' trigger aws event bridge? - amazon-web-services

Question

Although AWS considers using git webhooks to be antiquated practice, the documentation on aws codestar connections seems to be a bit scarce. I want to create a generic pipeline that can be triggered when a new repository is committed to for the first time (that it contains a folder of TF config). To do this, I need to be able to monitor when an aws codestar connection is used. I think that doing it this way will mean that I can build something that scales better.
But there doesn't appear to be a well documented way to monitor when 'anything' accesses a codestar connection:
https://docs.aws.amazon.com/service-authorization/latest/reference/list_awscodestarconnections.html#awscodestarconnections-actions-as-permissions
In the image above, one can see that there is an action that happens that needs a permission to work, but that is not directly accessible. In cloud trail, I found an action with a payload like this:
"eventTime": "2021-07-06T11:22:46Z",
"eventSource": "codestar-connections.amazonaws.com",
"eventName": "UseConnection",
"awsRegion": "us-east-1",
"sourceIPAddress": "codepipeline.amazonaws.com",
"userAgent": "codepipeline.amazonaws.com",
"requestParameters": {
"connectionArn": "arn:aws:codestar-connections:*:connection/",
"referenceType": "COMMIT",
"reference": {
"FullRepositoryId": "GitHub-User/Github-Repo",
"Commit": "SHA"
}
},
I believe that this is enough for me to use for what I want. I could create an SNS notification with a Lambda listener when this event triggers, but that requires setting up infrastructure to monitor CloudTrail events.
But while I was researching this, I noticed that AWS event bridge appears to know about codestar connections:
Note, if I take this a bit further, I can get something that looks like this:
{
"source": [
"aws.codestar-connections"
],
"detail-type": [
"AWS API Call via CloudTrail"
],
"detail": {
"eventSource": [
"codestar-connections.amazonaws.com"
]
}
}
... but I see no sample events, as it appears that I should, if they were there. And I'm unable to find documentation describing how to make codestar connections log the the UseConnection event to cloudwatch.
If this can be used, instead, then I can use a more direct approach without needing to build the infrastructure to monitor the CloudTrail events.
Can this be done?