Expressions

Expressions is a powerful tool that allows formulating complex filters for playbook events. Playbook event filters use Common Expression Language (CEL).

The Common Expression Language (CEL) is a non-Turing complete language designed for simplicity, speed, safety, and portability. CEL's C-like syntax looks nearly identical to equivalent expressions in C++, Go, Java, and TypeScript.

Examples:

filter: check.type == 'http'

filter: check.type == 'http' && summary.failed >  3

Context

Field	Description	Schema
check	Check referenced by the event	models.Check
summary	Check 1h summary of pass/faill/latency
component	Component referenced by the event	models.Component