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zeekayandHanzo Dev
aa87442fdd
Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
131 lines
4.3 KiB
Go
131 lines
4.3 KiB
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// SPDX-License-Identifier: MIT
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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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"io"
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"strings"
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"github.com/hanzoai/git/modules/util"
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"github.com/hanzoai/git/modules/validation"
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"github.com/hashicorp/go-version"
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"go.yaml.in/yaml/v4"
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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 = util.NewInvalidArgumentErrorf("Chart.yaml file is missing")
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// ErrInvalidName indicates an invalid package name
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ErrInvalidName = util.NewInvalidArgumentErrorf("package name is invalid")
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// ErrInvalidVersion indicates an invalid package version
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ErrInvalidVersion = util.NewInvalidArgumentErrorf("package version is invalid")
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// ErrInvalidChart indicates an invalid chart
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ErrInvalidChart = util.NewInvalidArgumentErrorf("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 []any `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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