mirror of https://github.com/kubernetes/kops.git
135 lines
3.2 KiB
Go
135 lines
3.2 KiB
Go
/*
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Copyright 2024 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"context"
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"flag"
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"fmt"
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"io"
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"net/http"
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"os"
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"strings"
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"sigs.k8s.io/yaml"
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)
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func main() {
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err := run(context.Background())
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if err != nil {
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fmt.Fprintf(os.Stderr, "%v\n", err)
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os.Exit(1)
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}
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}
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func run(ctx context.Context) error {
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filestoreBase := ""
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prefix := ""
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hashFileURL := ""
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var exclude globList
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flag.StringVar(&filestoreBase, "base", filestoreBase, "base directory")
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flag.StringVar(&prefix, "prefix", prefix, "prefix to fetch")
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flag.StringVar(&hashFileURL, "sums", hashFileURL, "prefix to fetch")
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flag.Var(&exclude, "exclude", "path-globs to exclude from output")
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flag.Parse()
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if hashFileURL == "" {
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hashFileURL = filestoreBase + prefix + "SHA256SUMS"
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}
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httpResponse, err := http.Get(hashFileURL)
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if err != nil {
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return fmt.Errorf("downloading %q: %w", hashFileURL, err)
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}
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if httpResponse.StatusCode != 200 {
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return fmt.Errorf("unexpected status getting %q: %v", hashFileURL, httpResponse.Status)
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}
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defer httpResponse.Body.Close()
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b, err := io.ReadAll(httpResponse.Body)
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if err != nil {
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return fmt.Errorf("reading body %q: %w", hashFileURL, err)
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}
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m := &manifest{}
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for _, line := range strings.Split(string(b), "\n") {
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line = strings.TrimSpace(line)
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if line == "" {
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continue
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}
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if line == "-----BEGIN PGP SIGNED MESSAGE-----" {
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// Start of the PGP boilerplate
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continue
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}
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if line == "-----BEGIN PGP SIGNATURE-----" {
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// Part of the PGP signature; end of signed content
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break
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}
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if line == "Hash: SHA256" {
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// Part of the PGP boilerplate
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continue
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}
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tokens := strings.Fields(line)
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if len(tokens) != 2 {
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return fmt.Errorf("unexpected line %q (expected 2 tokens)", line)
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}
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hash := tokens[0]
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name := tokens[1]
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name = removeBadPrefix(name)
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if exclude.Matches(prefix + name) {
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continue
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}
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m.Files = append(m.Files, file{
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Name: prefix + name,
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SHA256: hash,
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})
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}
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out, err := yaml.Marshal(&m)
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if err != nil {
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return fmt.Errorf("building yaml: %w", err)
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}
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if _, err := os.Stdout.Write(out); err != nil {
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return fmt.Errorf("writing output: %w", err)
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}
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return nil
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}
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type manifest struct {
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// FileStores []fileStore `json:"filestores,omitempty"`
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Files []file `json:"files,omitempty"`
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}
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type file struct {
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Name string `json:"name,omitempty"`
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SHA256 string `json:"sha256,omitempty"`
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}
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// removeBadPrefix is a hack for some of the older kubernetes sha256sum files,
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// while accidentally included an invalid prefix
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func removeBadPrefix(name string) string {
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badPrefix := "/workspace/src/k8s.io/kubernetes/_output"
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if !strings.HasPrefix(name, badPrefix) {
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return name
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}
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tokens := strings.Split(name, "/")
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return strings.Join(tokens[8:], "/")
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}
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