mirror of https://github.com/helm/helm.git
123 lines
3.2 KiB
Go
123 lines
3.2 KiB
Go
/*
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Copyright The Helm 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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"errors"
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"fmt"
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"io"
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"io/fs"
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"os"
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"path/filepath"
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"github.com/spf13/cobra"
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"helm.sh/helm/v3/cmd/helm/require"
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"helm.sh/helm/v3/pkg/repo"
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)
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const repoIndexDesc = `
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Read the current directory, generate an index file based on the charts found
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and write the result to 'index.yaml' in the current directory.
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This tool is used for creating an 'index.yaml' file for a chart repository. To
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set an absolute URL to the charts, use '--url' flag.
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To merge the generated index with an existing index file, use the '--merge'
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flag. In this case, the charts found in the current directory will be merged
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into the index passed in with --merge, with local charts taking priority over
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existing charts.
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`
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type repoIndexOptions struct {
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dir string
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url string
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merge string
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json bool
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}
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func newRepoIndexCmd(out io.Writer) *cobra.Command {
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o := &repoIndexOptions{}
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cmd := &cobra.Command{
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Use: "index [DIR]",
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Short: "generate an index file given a directory containing packaged charts",
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Long: repoIndexDesc,
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Args: require.ExactArgs(1),
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ValidArgsFunction: func(_ *cobra.Command, args []string, _ string) ([]string, cobra.ShellCompDirective) {
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if len(args) == 0 {
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// Allow file completion when completing the argument for the directory
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return nil, cobra.ShellCompDirectiveDefault
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}
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// No more completions, so disable file completion
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return noMoreArgsComp()
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},
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RunE: func(_ *cobra.Command, args []string) error {
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o.dir = args[0]
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return o.run(out)
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},
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}
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f := cmd.Flags()
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f.StringVar(&o.url, "url", "", "url of chart repository")
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f.StringVar(&o.merge, "merge", "", "merge the generated index into the given index")
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f.BoolVar(&o.json, "json", false, "output in JSON format")
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return cmd
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}
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func (i *repoIndexOptions) run(_ io.Writer) error {
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path, err := filepath.Abs(i.dir)
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if err != nil {
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return err
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}
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return index(path, i.url, i.merge, i.json)
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}
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func index(dir, url, mergeTo string, json bool) error {
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out := filepath.Join(dir, "index.yaml")
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i, err := repo.IndexDirectory(dir, url)
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if err != nil {
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return err
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}
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if mergeTo != "" {
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// if index.yaml is missing then create an empty one to merge into
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var i2 *repo.IndexFile
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if _, err := os.Stat(mergeTo); errors.Is(err, fs.ErrNotExist) {
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i2 = repo.NewIndexFile()
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writeIndexFile(i2, mergeTo, json)
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} else {
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i2, err = repo.LoadIndexFile(mergeTo)
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if err != nil {
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return fmt.Errorf("merge failed: %w", err)
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}
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}
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i.Merge(i2)
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}
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i.SortEntries()
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return writeIndexFile(i, out, json)
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}
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func writeIndexFile(i *repo.IndexFile, out string, json bool) error {
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if json {
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return i.WriteJSONFile(out, 0o644)
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}
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return i.WriteFile(out, 0o644)
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}
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