mirror of
https://github.com/kubernetes-sigs/kustomize.git
synced 2026-05-17 18:25:26 +00:00
57 lines
2.1 KiB
Go
57 lines
2.1 KiB
Go
// Copyright 2020 The Kubernetes Authors.
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// SPDX-License-Identifier: Apache-2.0
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// k8scopy is a code reuse mechanism for k8s.io code.
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//
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// kustomize, kyaml, cmd/config are kustomize repo modules that want to reuse
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// some small bits of k8s.io code. These modules cannot depend k8s.io via
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// normal Go import or vendoring because kubectl will depend on these things
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// eventually (see kubernetes-sigs/kustomize/issues/1500), and kubectl's code
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// reuse is tricky. While kubectl remains in the k/k repo, it depends on local
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// relative symlinked paths to a 'staging' version of k8s.io code. No code
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// imported by kubectl can refer to any other version of k8s.io code, not by
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// Go importing, not by Go vendoring.
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//
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// This main exists to allow "go generate" to copy select k8s.io packages into
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// the kustomize repo at well defined tags in reproducible fashion. It's
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// a form of vendoring reuse that avoids the problems created by k8s staging.
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// The copied code is labelled as generated and is not otherwise edited.
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//
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// When/if kubectl is finally extracted from k/k to its own repo, it can
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// depend on k8s.io code via normal imports, and then so can kustomize,
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// so this technique can be dropped.
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//
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// Until then, if a bug is found in a particular instance of copied k8s.io
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// (highly unlikely, since only old stable versions are copied), just update
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// the version being copied, re-generate, and if need be adjust call points.
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package main
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import (
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"log"
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"os"
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"sigs.k8s.io/kustomize/cmd/k8scopy/internal"
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)
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const pgmName = "k8scopy"
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func main() {
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if len(os.Args) < 3 {
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log.Fatal("Need name of yaml file containing module specs and prefix.")
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}
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spec := internal.ReadSpec(os.Args[1])
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c := internal.NewCopier(spec, os.Args[2], pgmName)
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internal.RunNoOutputCommand("go", "get", spec.Name())
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for _, p := range spec.Packages {
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for _, n := range p.Files {
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if err := c.CopyFile(p.Name, n); err != nil {
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log.Fatal(err)
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}
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}
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}
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internal.RunNoOutputCommand(
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"go", "mod", "edit", "-droprequire="+spec.Module)
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internal.RunNoOutputCommand("go", "mod", "tidy")
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internal.RunGetOutputCommand("go", "fmt", "./...")
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}
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