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https://github.com/tailscale/tailscale.git
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49fd0a62c9
* cmd/k8s-operator: generate static manifests from Helm charts This is done to ensure that there is a single source of truth for the operator kube manifests. Also adds linux node selector to the static manifests as this was added as a default to the Helm chart. Static manifests can now be generated by running `go generate tailscale.com/cmd/k8s-operator`. Updates tailscale/tailscale#9222 Signed-off-by: Irbe Krumina <irbe@tailscale.com>
75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !plan9
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package main
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import (
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"bytes"
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"gopkg.in/yaml.v3"
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)
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func main() {
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repoRoot := "../../"
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cmd := exec.Command("./tool/helm", "template", "operator", "./cmd/k8s-operator/deploy/chart",
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"--namespace=tailscale")
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cmd.Dir = repoRoot
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var out bytes.Buffer
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cmd.Stdout = &out
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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log.Fatalf("error templating helm manifests: %v", err)
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}
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var final bytes.Buffer
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templatePath := filepath.Join(repoRoot, "cmd/k8s-operator/deploy/manifests/templates")
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fileInfos, err := os.ReadDir(templatePath)
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if err != nil {
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log.Fatalf("error reading templates: %v", err)
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}
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for _, fi := range fileInfos {
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templateBytes, err := os.ReadFile(filepath.Join(templatePath, fi.Name()))
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if err != nil {
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log.Fatalf("error reading template: %v", err)
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}
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final.Write(templateBytes)
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}
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decoder := yaml.NewDecoder(&out)
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for {
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var document any
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err := decoder.Decode(&document)
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if err == io.EOF {
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break
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}
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if err != nil {
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log.Fatalf("failed read from input data: %v", err)
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}
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bytes, err := yaml.Marshal(document)
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if err != nil {
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log.Fatalf("failed to marshal YAML document: %v", err)
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}
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if strings.TrimSpace(string(bytes)) == "null" {
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continue
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}
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if _, err = final.Write(bytes); err != nil {
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log.Fatalf("error marshaling yaml: %v", err)
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}
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fmt.Fprint(&final, "---\n")
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}
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finalString, _ := strings.CutSuffix(final.String(), "---\n")
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if err := os.WriteFile(filepath.Join(repoRoot, "cmd/k8s-operator/deploy/manifests/operator.yaml"), []byte(finalString), 0664); err != nil {
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log.Fatalf("error writing new file: %v", err)
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}
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}
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