A composition function that conditionally filters resources using CEL


function-cel-filter

v1beta1

Filters can be used to filter desired composed resources.

APIVersion defines the versioned schema of this representation of an object.
Servers should convert recognized schemas to the latest internal value, and
may reject unrecognized values.
More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources

Filters to apply to the desired composed resources produced by previous
functions in the pipeline. Each filter matches a desired composed
resource by name. If the expression evaluates to true, the composed
resource will be included. Desired composed resources that don't match
any filter are always included.

A Filter can be used to filter a desired composed resource produced by a
previous function in the pipeline.

Expression is a CEL expression. See https://github.com/google/cel-spec.
The following top-level variables are available to the expression:


* observed
* desired
* context


Example expressions:


* observed.composite.resource.spec.widgets == 42
* observed.resources['composed'].connection_details['user'] == b'admin'
* desired.resources['composed'].resource.spec.widgets == 42


See the RunFunctionRequest protobuf message for schema details.
https://buf.build/crossplane/crossplane/docs/main:apiextensions.fn.proto.v1beta1

Name of the desired composed resource(s) this filter should match.


Use regular expressions to match multiple resources. Expressions are
automatically prefixed with ^ and suffixed with $. For example 'buck.*'
becomes '^buck.*$'. See https://github.com/google/re2/wiki/Syntax.

Kind is a string value representing the REST resource this object represents.
Servers may infer this from the endpoint the client submits requests to.
Cannot be updated.
In CamelCase.
More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds