k8s-selector

Kubernetes selector implementation in node

Implementation of stringify, parse and match for selectors in the Kubernetes API.

Methods

stringify(selector)

Stringifies a selector for use in a query parameter.

import { stringify } from "k8s-selector";
import rp from "request-promise";

rp.get({
	uri  : "http://localhost:8080/api/v1/pods",
	json : true,
	qs   : {
		matchLabels : stringify({
			matchLabels : {
				labelA : "a"
			},
			matchExpressions : [{
				operator : "In",
				key      : "labelB",
				values   : ["b", "B"]
			}]
		})
	}
});

parse(string)

Parses a Kubernetes API query param selector.

import assert from "assert";

import { parse } from "k8s-selector";

assert.deepEqual(parse("labelA = a, labelB != b"), {
	matchLabels : {
		labelA : "a"
	},
	matchExpressions : [{
		operator : "NotIn",
		key      : "labelB",
		values   : ["b"]
	}]
});

Selector(string|selector)

Implementation of Kubernetes selector matching logic.

import assert from "assert";

import { Selector } from "k8s-selector";

const selector = Selector("labelA = a");

assert.strictEqual(selector({ labelA : "a" }), true);

License

MIT License