121 lines
2.8 KiB
Go
121 lines
2.8 KiB
Go
package helmhelper
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import (
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"fmt"
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"os"
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"git.badhouseplants.net/allanger/giops/internal/config/repository"
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"github.com/sirupsen/logrus"
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"gopkg.in/yaml.v2"
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"helm.sh/helm/v3/pkg/action"
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"helm.sh/helm/v3/pkg/cli"
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"helm.sh/helm/v3/pkg/getter"
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"helm.sh/helm/v3/pkg/registry"
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"helm.sh/helm/v3/pkg/repo"
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)
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type Helm struct{}
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func NewHelm() Helmhelper {
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return &Helm{}
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}
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type ChartData struct {
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Version string
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}
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func (h *Helm) FindLatestVersion(dir, chart string, repository repository.Repository) (version string, err error) {
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downloadDir := fmt.Sprintf("%s/.charts", dir)
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if err := os.MkdirAll(downloadDir, 0777); err != nil {
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return "", err
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}
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// If file doesn't exist
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config := new(action.Configuration)
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cl := cli.New()
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chartDir := fmt.Sprintf("%s/%s-%s", downloadDir, repository.Name, chart)
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_, err = os.Stat(chartDir)
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if err != nil && !os.IsNotExist(err) {
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return "", nil
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} else if os.IsNotExist(err) {
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if err := os.Mkdir(chartDir, 0777); err != nil {
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return "", err
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}
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registry, err := registry.NewClient()
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if err != nil {
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return "", err
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}
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var path string
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// Download the chart to the workdir
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if repository.Kind != "oci" {
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r, err := repo.NewChartRepository(&repo.Entry{
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Name: repository.Name,
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URL: repository.URL,
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}, getter.All(cl))
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if err != nil {
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return "", err
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}
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path = r.Config.Name
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} else {
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path = repository.URL
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}
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client := action.NewPullWithOpts(action.WithConfig(config))
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client.SetRegistryClient(registry)
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client.DestDir = chartDir
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client.Settings = cl
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chartRemote := fmt.Sprintf("%s/%s", path, chart)
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logrus.Infof("trying to pull: %s", chartRemote)
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if _, err = client.Run(chartRemote); err != nil {
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return "", err
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}
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}
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showAction := action.NewShowWithConfig(action.ShowChart, config)
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chartPath, err := getChartPathFromDir(chartDir)
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if err != nil {
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return "", err
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}
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res, err := showAction.LocateChart(fmt.Sprintf("%s/%s", chartDir, chartPath), cl)
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if err != nil {
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return "", err
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}
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res, err = showAction.Run(res)
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if err != nil {
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return "", nil
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}
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chartData, err := chartFromString(res)
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if err != nil {
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return "", err
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}
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logrus.Infof("the latest version of %s is %s", chart, chartData.Version)
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return chartData.Version, err
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}
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func getChartPathFromDir(dir string) (file string, err error) {
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files, err := os.ReadDir(dir)
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if err != nil {
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return "", err
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} else if len(files) == 0 {
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return "", fmt.Errorf("expected to have one file, got zero in a dir %s", dir)
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} else if len(files) > 1 {
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return "", fmt.Errorf("expected to have only one file in a dir %s", dir)
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}
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return files[0].Name(), nil
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}
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func chartFromString(info string) (*ChartData, error) {
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chartData := new(ChartData)
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if err := yaml.Unmarshal([]byte(info), &chartData); err != nil {
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return nil, err
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}
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return chartData, nil
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}
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