mirror of
https://github.com/go-gitea/gitea.git
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e4eaa68a2b
I don't see why we have to use two versions of yaml. The difference between the two versions has nothing to do with our usage.
132 lines
4.3 KiB
Go
132 lines
4.3 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package helm
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import (
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"archive/tar"
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"compress/gzip"
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"errors"
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"io"
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"strings"
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"code.gitea.io/gitea/modules/validation"
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"github.com/hashicorp/go-version"
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"gopkg.in/yaml.v3"
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)
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var (
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// ErrMissingChartFile indicates a missing Chart.yaml file
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ErrMissingChartFile = errors.New("Chart.yaml file is missing")
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// ErrInvalidName indicates an invalid package name
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ErrInvalidName = errors.New("package name is invalid")
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// ErrInvalidVersion indicates an invalid package version
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ErrInvalidVersion = errors.New("package version is invalid")
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// ErrInvalidChart indicates an invalid chart
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ErrInvalidChart = errors.New("chart is invalid")
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)
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// Metadata for a Chart file. This models the structure of a Chart.yaml file.
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type Metadata struct {
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APIVersion string `json:"api_version" yaml:"apiVersion"`
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Type string `json:"type,omitempty" yaml:"type,omitempty"`
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Name string `json:"name" yaml:"name"`
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Version string `json:"version" yaml:"version"`
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AppVersion string `json:"app_version,omitempty" yaml:"appVersion,omitempty"`
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Home string `json:"home,omitempty" yaml:"home,omitempty"`
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Sources []string `json:"sources,omitempty" yaml:"sources,omitempty"`
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Description string `json:"description,omitempty" yaml:"description,omitempty"`
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Keywords []string `json:"keywords,omitempty" yaml:"keywords,omitempty"`
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Maintainers []*Maintainer `json:"maintainers,omitempty" yaml:"maintainers,omitempty"`
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Icon string `json:"icon,omitempty" yaml:"icon,omitempty"`
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Condition string `json:"condition,omitempty" yaml:"condition,omitempty"`
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Tags string `json:"tags,omitempty" yaml:"tags,omitempty"`
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Deprecated bool `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
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Annotations map[string]string `json:"annotations,omitempty" yaml:"annotations,omitempty"`
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KubeVersion string `json:"kube_version,omitempty" yaml:"kubeVersion,omitempty"`
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Dependencies []*Dependency `json:"dependencies,omitempty" yaml:"dependencies,omitempty"`
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}
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type Maintainer struct {
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Name string `json:"name,omitempty" yaml:"name,omitempty"`
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Email string `json:"email,omitempty" yaml:"email,omitempty"`
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URL string `json:"url,omitempty" yaml:"url,omitempty"`
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}
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type Dependency struct {
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Name string `json:"name" yaml:"name"`
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Version string `json:"version,omitempty" yaml:"version,omitempty"`
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Repository string `json:"repository" yaml:"repository"`
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Condition string `json:"condition,omitempty" yaml:"condition,omitempty"`
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Tags []string `json:"tags,omitempty" yaml:"tags,omitempty"`
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Enabled bool `json:"enabled,omitempty" yaml:"enabled,omitempty"`
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ImportValues []interface{} `json:"import_values,omitempty" yaml:"import-values,omitempty"`
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Alias string `json:"alias,omitempty" yaml:"alias,omitempty"`
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}
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// ParseChartArchive parses the metadata of a Helm archive
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func ParseChartArchive(r io.Reader) (*Metadata, error) {
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gzr, err := gzip.NewReader(r)
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if err != nil {
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return nil, err
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}
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defer gzr.Close()
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tr := tar.NewReader(gzr)
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for {
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hd, err := tr.Next()
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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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return nil, err
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}
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if hd.Typeflag != tar.TypeReg {
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continue
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}
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if hd.FileInfo().Name() == "Chart.yaml" {
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if strings.Count(hd.Name, "/") != 1 {
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continue
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}
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return ParseChartFile(tr)
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}
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}
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return nil, ErrMissingChartFile
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}
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// ParseChartFile parses a Chart.yaml file to retrieve the metadata of a Helm chart
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func ParseChartFile(r io.Reader) (*Metadata, error) {
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var metadata *Metadata
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if err := yaml.NewDecoder(r).Decode(&metadata); err != nil {
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return nil, err
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}
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if metadata.APIVersion == "" {
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return nil, ErrInvalidChart
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}
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if metadata.Type != "" && metadata.Type != "application" && metadata.Type != "library" {
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return nil, ErrInvalidChart
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}
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if metadata.Name == "" {
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return nil, ErrInvalidName
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}
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if _, err := version.NewSemver(metadata.Version); err != nil {
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return nil, ErrInvalidVersion
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}
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if !validation.IsValidURL(metadata.Home) {
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metadata.Home = ""
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}
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return metadata, nil
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}
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