I'm looking to develop and/or implement an existing solutions an Alarm Engine preferably around AWS and/or PHP eco-systems.

Precisely I have a stream of messages containing values and I need to define rules like:

• Temperature has been greater than 100 F° for a period of 5 minutes

And dispatch a message if the rule matches.

I'm looking to do something very similar to Grafana Alarms or CloudWatch Alarms on AWS.

I've not been able to find a standalone service or library to do that.

The rules engines doesn't seems that hard, however given the fact that there is a period to take care of, it seems somewhat more complicated because we need to take care of a transient state.

Any clues?