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chore: Refactor legacy code to use pattern matching
Also add missing unit tests to cover more. Co-authored-by: Janne Savolainen <janne.savolainen@live.fi> Signed-off-by: Iku-turso <mikko.aspiala@gmail.com>
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befbe62e63
@ -21,96 +21,130 @@ import { parseKubeApi } from "../kube-api-parse";
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type KubeApiParseTestData = [string, IKubeApiParsed];
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const tests: KubeApiParseTestData[] = [
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["/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions/prometheuses.monitoring.coreos.com", {
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apiBase: "/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions",
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apiPrefix: "/apis",
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apiGroup: "apiextensions.k8s.io",
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apiVersion: "v1beta1",
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apiVersionWithGroup: "apiextensions.k8s.io/v1beta1",
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namespace: undefined,
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resource: "customresourcedefinitions",
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name: "prometheuses.monitoring.coreos.com",
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}],
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["/api/v1/namespaces/kube-system/pods/coredns-6955765f44-v8p27", {
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apiBase: "/api/v1/pods",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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namespace: "kube-system",
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resource: "pods",
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name: "coredns-6955765f44-v8p27",
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}],
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["/apis/stable.example.com/foo1/crontabs", {
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apiBase: "/apis/stable.example.com/foo1/crontabs",
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apiPrefix: "/apis",
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apiGroup: "stable.example.com",
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apiVersion: "foo1",
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apiVersionWithGroup: "stable.example.com/foo1",
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resource: "crontabs",
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name: undefined,
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namespace: undefined,
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}],
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["/apis/cluster.k8s.io/v1alpha1/clusters", {
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apiBase: "/apis/cluster.k8s.io/v1alpha1/clusters",
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apiPrefix: "/apis",
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apiGroup: "cluster.k8s.io",
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apiVersion: "v1alpha1",
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apiVersionWithGroup: "cluster.k8s.io/v1alpha1",
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resource: "clusters",
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name: undefined,
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namespace: undefined,
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}],
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["/api/v1/namespaces", {
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apiBase: "/api/v1/namespaces",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "namespaces",
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name: undefined,
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namespace: undefined,
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}],
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["/api/v1/secrets", {
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apiBase: "/api/v1/secrets",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "secrets",
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name: undefined,
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namespace: undefined,
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}],
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["/api/v1/nodes/minikube", {
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apiBase: "/api/v1/nodes",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "nodes",
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name: "minikube",
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namespace: undefined,
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}],
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["/api/foo-bar/nodes/minikube", {
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apiBase: "/api/foo-bar/nodes",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "foo-bar",
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apiVersionWithGroup: "foo-bar",
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resource: "nodes",
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name: "minikube",
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namespace: undefined,
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}],
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["/api/v1/namespaces/kube-public", {
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apiBase: "/api/v1/namespaces",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "namespaces",
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name: "kube-public",
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namespace: undefined,
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}],
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[
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"http://some-irrelevant-domain/api/v1/secrets?some-irrelevant-parameter=some-irrelevant-value",
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{
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apiBase: "/api/v1/secrets",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "secrets",
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name: undefined,
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namespace: undefined,
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},
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],
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[
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"/api/v1/secrets",
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{
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apiBase: "/api/v1/secrets",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "secrets",
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name: undefined,
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namespace: undefined,
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},
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],
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[
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"/api/v1/namespaces",
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{
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apiBase: "/api/v1/namespaces",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "namespaces",
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name: undefined,
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namespace: undefined,
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},
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],
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[
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"/api/v1/nodes/minikube",
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{
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apiBase: "/api/v1/nodes",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "nodes",
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name: "minikube",
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namespace: undefined,
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},
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],
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[
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"/api/foo-bar/nodes/minikube",
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{
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apiBase: "/api/foo-bar/nodes",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "foo-bar",
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apiVersionWithGroup: "foo-bar",
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resource: "nodes",
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name: "minikube",
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namespace: undefined,
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},
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],
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[
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"/api/v1/namespaces/kube-public",
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{
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apiBase: "/api/v1/namespaces",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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resource: "namespaces",
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name: "kube-public",
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namespace: undefined,
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},
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],
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[
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"/apis/stable.example.com/foo1/crontabs",
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{
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apiBase: "/apis/stable.example.com/foo1/crontabs",
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apiPrefix: "/apis",
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apiGroup: "stable.example.com",
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apiVersion: "foo1",
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apiVersionWithGroup: "stable.example.com/foo1",
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resource: "crontabs",
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name: undefined,
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namespace: undefined,
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},
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],
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[
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"/apis/cluster.k8s.io/v1alpha1/clusters",
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{
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apiBase: "/apis/cluster.k8s.io/v1alpha1/clusters",
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apiPrefix: "/apis",
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apiGroup: "cluster.k8s.io",
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apiVersion: "v1alpha1",
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apiVersionWithGroup: "cluster.k8s.io/v1alpha1",
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resource: "clusters",
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name: undefined,
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namespace: undefined,
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},
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],
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[
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"/api/v1/namespaces/kube-system/pods/coredns-6955765f44-v8p27",
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{
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apiBase: "/api/v1/pods",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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namespace: "kube-system",
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resource: "pods",
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name: "coredns-6955765f44-v8p27",
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},
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],
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[
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"/apis/apps/v1/namespaces/default/deployments/some-deployment",
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@ -125,20 +159,73 @@ const tests: KubeApiParseTestData[] = [
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resource: "deployments",
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},
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],
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[
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"/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions/prometheuses.monitoring.coreos.com",
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{
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apiBase: "/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions",
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apiPrefix: "/apis",
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apiGroup: "apiextensions.k8s.io",
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apiVersion: "v1beta1",
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apiVersionWithGroup: "apiextensions.k8s.io/v1beta1",
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namespace: undefined,
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resource: "customresourcedefinitions",
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name: "prometheuses.monitoring.coreos.com",
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},
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],
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[
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"/api/v1/namespaces/kube-system/pods",
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{
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apiBase: "/api/v1/pods",
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apiPrefix: "/api",
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apiGroup: "",
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apiVersion: "v1",
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apiVersionWithGroup: "v1",
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namespace: "kube-system",
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resource: "pods",
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name: undefined,
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},
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],
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[
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"/apis/cluster.k8s.io/v1/namespaces/kube-system/pods",
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{
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apiBase: "/apis/cluster.k8s.io/v1/pods",
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apiPrefix: "/apis",
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apiGroup: "cluster.k8s.io",
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apiVersion: "v1",
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apiVersionWithGroup: "cluster.k8s.io/v1",
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namespace: "kube-system",
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resource: "pods",
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name: undefined,
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},
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],
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];
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const invalidTests = [
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undefined,
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"",
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"ajklsmh",
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"some-invalid-path",
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"//apiextensions.k8s.io/v1beta1/customresourcedefinitions/prometheuses.monitoring.coreos.com",
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"/apis//v1beta1/customresourcedefinitions/prometheuses.monitoring.coreos.com",
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"/apis/apiextensions.k8s.io//customresourcedefinitions/prometheuses.monitoring.coreos.com",
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"/apis/apiextensions.k8s.io/v1beta1//prometheuses.monitoring.coreos.com",
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"/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions/",
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"//v1beta1/customresourcedefinitions/prometheuses.monitoring.coreos.com",
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"/api//v1beta1/customresourcedefinitions/prometheuses.monitoring.coreos.com",
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"/api//customresourcedefinitions/prometheuses.monitoring.coreos.com",
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"/api/v1beta1//prometheuses.monitoring.coreos.com",
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"/api/v1beta1/customresourcedefinitions/",
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];
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describe("parseApi unit tests", () => {
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it.each(tests)("testing %j", (url, expected) => {
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it.each(tests)(`given path %j, parses as expected`, (url, expected) => {
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expect(parseKubeApi(url)).toStrictEqual(expected);
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});
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it.each(invalidTests)("testing %j should throw", (url) => {
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it.each(invalidTests)(`given path %j, parses as undefined`, (url) => {
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expect(parseKubeApi(url as never)).toBe(undefined);
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});
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});
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@ -3,9 +3,12 @@
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* Licensed under MIT License. See LICENSE in root directory for more information.
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*/
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// Parse kube-api path and get api-version, group, etc.
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import { pipeline } from "@ogre-tools/fp";
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import { compact, join } from "lodash/fp";
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import { getMatchFor } from "./get-match-for";
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import { prepend } from "./prepend";
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import { array } from "@k8slens/utilities";
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// Parse kube-api path and get api-version, group, etc.
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export interface IKubeApiLinkRef {
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apiPrefix?: string;
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@ -22,92 +25,46 @@ export interface IKubeApiParsed extends IKubeApiLinkRef {
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apiVersionWithGroup: string;
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}
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export function parseKubeApi(path: string): IKubeApiParsed | undefined {
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const apiPath = new URL(path, "https://localhost").pathname;
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const [, prefix, ...parts] = apiPath.split("/");
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const apiPrefix = `/${prefix}`;
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const [left, right, namespaced] = array.split(parts, "namespaces");
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let apiGroup: string;
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let apiVersion: string | undefined;
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let namespace: string | undefined;
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let resource: string;
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let name: string | undefined;
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if (namespaced) {
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switch (right.length) {
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case 1:
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name = right[0];
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// fallthrough
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case 0:
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resource = "namespaces"; // special case this due to `split` removing namespaces
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break;
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default:
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[namespace, resource, name] = right;
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break;
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}
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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apiVersion = left.at(-1)!;
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const rest = left.slice(0, -1);
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apiGroup = rest.join("/");
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} else {
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if (left.length === 0) {
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return undefined;
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}
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if (left.length === 1 || left.length === 2) {
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[apiVersion, resource] = left;
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apiGroup = "";
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} else if (left.length === 4) {
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[apiGroup, apiVersion, resource, name] = left;
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} else {
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/**
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* Given that
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* - `apiVersion` is `GROUP/VERSION` and
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* - `VERSION` is `DNS_LABEL` which is /^[a-z0-9]((-[a-z0-9])|[a-z0-9])*$/i
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* where length <= 63
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* - `GROUP` is /^D(\.D)*$/ where D is `DNS_LABEL` and length <= 253
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*
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* There is no well defined selection from an array of items that were
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* separated by '/'
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*
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* Solution is to create a heuristic. Namely:
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* 1. if '.' in left[0] then apiGroup <- left[0]
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* 2. if left[1] matches /^v[0-9]/ then apiGroup, apiVersion <- left[0], left[1]
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* 3. otherwise assume apiVersion <- left[0]
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* 4. always resource, name <- left[(0 or 1)+1..]
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*/
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if (left[0].includes(".") || left[1].match(/^v[0-9]/)) {
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[apiGroup, apiVersion] = left;
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resource = left.slice(2).join("/");
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} else {
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apiGroup = "";
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apiVersion = left[0];
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[resource, name] = left.slice(1);
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}
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}
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export function parseKubeApi(
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path: string | undefined,
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): IKubeApiParsed | undefined {
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if (!path) {
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return undefined;
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}
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const apiVersionWithGroup = [apiGroup, apiVersion].filter(v => v).join("/");
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const apiBase = [apiPrefix, apiGroup, apiVersion, resource].filter(v => v).join("/");
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const parsedPath = getParsedPath(path);
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if (!parsedPath) {
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return undefined;
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}
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const { apiOrApis, apiGroup, namespace, apiVersion, resource, name } =
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parsedPath;
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return {
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apiBase,
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apiPrefix, apiGroup,
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apiVersion, apiVersionWithGroup,
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namespace, resource, name,
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apiBase: getApiBase(apiOrApis, apiGroup, apiVersion, resource),
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apiPrefix: getApiPrefix(apiOrApis),
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apiGroup: getApiGroup(apiGroup),
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apiVersion,
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apiVersionWithGroup: getApiVersionWithGroup(apiGroup, apiVersion),
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namespace,
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resource,
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name,
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};
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}
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function isIKubeApiParsed(refOrParsed: IKubeApiLinkRef | IKubeApiParsed): refOrParsed is IKubeApiParsed {
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function isIKubeApiParsed(
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refOrParsed: IKubeApiLinkRef | IKubeApiParsed,
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): refOrParsed is IKubeApiParsed {
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return "apiGroup" in refOrParsed && !!refOrParsed.apiGroup;
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}
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export function createKubeApiURL(linkRef: IKubeApiLinkRef): string;
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export function createKubeApiURL(linkParsed: IKubeApiParsed): string;
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export function createKubeApiURL(ref: IKubeApiLinkRef | IKubeApiParsed): string {
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export function createKubeApiURL(
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ref: IKubeApiLinkRef | IKubeApiParsed,
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): string {
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if (isIKubeApiParsed(ref)) {
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return createKubeApiURL({
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apiPrefix: ref.apiPrefix,
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@ -133,3 +90,42 @@ export function createKubeApiURL(ref: IKubeApiLinkRef | IKubeApiParsed): string
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return parts.join("/");
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}
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const getKubeApiPathMatch = getMatchFor(
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/^\/(?<apiOrApis>apis)\/(?<apiGroup>[^/]+?)\/(?<apiVersion>[^/]+?)\/namespaces\/(?<namespace>[^/]+?)\/(?<resource>[^/]+?)\/(?<name>[^/]+?)$/,
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/^\/(?<apiOrApis>apis)\/(?<apiGroup>[^/]+?)\/(?<apiVersion>[^/]+?)\/namespaces\/(?<namespace>[^/]+?)\/(?<resource>[^/]+?)$/,
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/^\/(?<apiOrApis>api)\/(?<apiVersion>[^/]+?)\/namespaces\/(?<namespace>[^/]+?)\/(?<resource>[^/]+?)\/(?<name>[^/]+?)$/,
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/^\/(?<apiOrApis>apis)\/(?<apiGroup>[^/]+?)\/(?<apiVersion>[^/]+?)\/(?<resource>[^/]+?)\/(?<name>[^/]+?)$/,
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/^\/(?<apiOrApis>api)\/(?<apiVersion>[^/]+?)\/namespaces\/(?<namespace>[^/]+?)\/(?<resource>[^/]+?)$/,
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/^\/(?<apiOrApis>apis)\/(?<apiGroup>[^/]+?)\/(?<apiVersion>[^/]+?)\/(?<resource>[^/]+?)$/,
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/^\/(?<apiOrApis>api)\/(?<apiVersion>[^/]+?)\/(?<resource>[^/]+?)\/(?<name>[^/]+?)$/,
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/^\/(?<apiOrApis>api)\/(?<apiVersion>[^/]+?)\/(?<resource>[^/]+?)$/,
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);
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const getParsedPath = (path: string) =>
|
||||
pipeline(path, withoutDomainAddressOrParameters, getKubeApiPathMatch, (match) => match?.groups);
|
||||
|
||||
const joinTruthy = (delimiter: string) => (toBeJoined: string[]) =>
|
||||
pipeline(toBeJoined, compact, join(delimiter));
|
||||
|
||||
const getApiBase = (
|
||||
apiOrApis: string,
|
||||
apiGroup: string,
|
||||
apiVersion: string,
|
||||
resource: string,
|
||||
) =>
|
||||
pipeline(
|
||||
[apiOrApis, apiGroup, apiVersion, resource],
|
||||
joinTruthy("/"),
|
||||
prepend("/"),
|
||||
);
|
||||
|
||||
const getApiPrefix = prepend("/");
|
||||
|
||||
const getApiVersionWithGroup = (apiGroup: string, apiVersion: string) =>
|
||||
joinTruthy("/")([apiGroup, apiVersion]);
|
||||
|
||||
const getApiGroup = (apiGroup: string) => apiGroup || "";
|
||||
|
||||
const withoutDomainAddressOrParameters = (path: string) =>
|
||||
new URL(path, "http://irrelevant").pathname;
|
||||
|
Loading…
Reference in New Issue
Block a user