Crate kube_cel 

Kubernetes CEL extension functions for the cel crate.

This crate provides the Kubernetes-specific CEL (Common Expression Language) functions that are available in Kubernetes CRD validation rules, built on top of the cel crate.

Usage

use cel::Context;
use kube_cel::register_all;

let mut ctx = Context::default();
register_all(&mut ctx);

CRD Validation Pipeline (feature = validation)

Compile and evaluate x-kubernetes-validations CEL rules client-side, without an API server.

kube-cel = { version = "0.5", features = ["validation"] }

use kube_cel::validation::Validator;
use serde_json::json;

let schema = json!({
    "type": "object",
    "x-kubernetes-validations": [
        {"rule": "self.replicas >= 0", "message": "must be non-negative"}
    ],
    "properties": { "replicas": {"type": "integer"} }
});

let object = json!({"replicas": -1});
let errors = Validator::new().validate(&schema, &object, None);
assert_eq!(errors.len(), 1);

For repeated validation against the same schema, pre-compile with [compilation::compile_schema] and use [validation::Validator::validate_compiled].

Modules

encoders

Base64 encode/decode functions for Kubernetes CEL.

format

Kubernetes CEL string formatting extension function.

ip

Kubernetes CEL IP and CIDR extension functions.

jsonpatch

JSONPatch key escaping for Kubernetes CEL.

lists

Kubernetes CEL list extension functions.

math

Math extension library for Kubernetes CEL.

named_format

Named format validation for Kubernetes CEL.

quantity

Kubernetes CEL quantity extension functions.

regex_funcs

Kubernetes CEL regex extension functions.

semver_funcs

Kubernetes CEL semantic versioning extension functions.

sets

Kubernetes CEL sets extension functions.

strings

Kubernetes CEL string extension functions.

urls

Kubernetes CEL URL extension functions.

Functions

register_all

Register all available Kubernetes CEL extension functions into the given context.