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@ -249,22 +249,24 @@ func (m *Manager) downloadAll(deps []*chart.Dependency) error {
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destPath := filepath.Join(m.ChartPath, "charts")
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tmpPath := filepath.Join(m.ChartPath, "tmpcharts")
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// Create 'charts' directory if it doesn't already exist.
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if fi, err := os.Stat(destPath); err != nil {
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// Check if 'charts' directory is not actally a directory. If it does not exist, create it.
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if fi, err := os.Stat(destPath); err == nil {
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if !fi.IsDir() {
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return errors.Errorf("%q is not a directory", destPath)
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}
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} else if os.IsNotExist(err) {
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if err := os.MkdirAll(destPath, 0755); err != nil {
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return err
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}
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} else if !fi.IsDir() {
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return errors.Errorf("%q is not a directory", destPath)
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}
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if err := fs.RenameWithFallback(destPath, tmpPath); err != nil {
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return errors.Wrap(err, "unable to move current charts to tmp dir")
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} else {
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return fmt.Errorf("unable to retrieve file info for '%s': %v", destPath, err)
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}
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if err := os.MkdirAll(destPath, 0755); err != nil {
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// Prepare tmpPath
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if err := os.MkdirAll(tmpPath, 0755); err != nil {
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return err
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}
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defer os.RemoveAll(tmpPath)
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fmt.Fprintf(m.Out, "Saving %d charts\n", len(deps))
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var saveError error
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@ -273,10 +275,11 @@ func (m *Manager) downloadAll(deps []*chart.Dependency) error {
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// No repository means the chart is in charts directory
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if dep.Repository == "" {
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fmt.Fprintf(m.Out, "Dependency %s did not declare a repository. Assuming it exists in the charts directory\n", dep.Name)
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chartPath := filepath.Join(tmpPath, dep.Name)
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// NOTE: we are only validating the local dependency conforms to the constraints. No copying to tmpPath is necessary.
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chartPath := filepath.Join(destPath, dep.Name)
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ch, err := loader.LoadDir(chartPath)
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if err != nil {
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return fmt.Errorf("unable to load chart: %v", err)
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return fmt.Errorf("unable to load chart '%s': %v", chartPath, err)
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}
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constraint, err := semver.NewConstraint(dep.Version)
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@ -354,8 +357,7 @@ func (m *Manager) downloadAll(deps []*chart.Dependency) error {
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getter.WithTagName(version))
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}
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_, _, err = dl.DownloadTo(churl, version, destPath)
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if err != nil {
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if _, _, err = dl.DownloadTo(churl, version, tmpPath); err != nil {
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saveError = errors.Wrapf(err, "could not download %s", churl)
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break
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}
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@ -363,36 +365,14 @@ func (m *Manager) downloadAll(deps []*chart.Dependency) error {
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churls[churl] = struct{}{}
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}
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// TODO: this should probably be refactored to be a []error, so we can capture and provide more information rather than "last error wins".
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if saveError == nil {
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fmt.Fprintln(m.Out, "Deleting outdated charts")
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for _, dep := range deps {
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// Chart from local charts directory stays in place
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if dep.Repository != "" {
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if err := m.safeDeleteDep(dep.Name, tmpPath); err != nil {
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return err
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}
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}
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}
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if err := move(tmpPath, destPath); err != nil {
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// now we can move all downloaded charts to destPath and delete outdated dependencies
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if err := m.safeMoveDeps(deps, tmpPath, destPath); err != nil {
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return err
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}
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if err := os.RemoveAll(tmpPath); err != nil {
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return errors.Wrapf(err, "failed to remove %v", tmpPath)
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}
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} else {
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fmt.Fprintln(m.Out, "Save error occurred: ", saveError)
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fmt.Fprintln(m.Out, "Deleting newly downloaded charts, restoring pre-update state")
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for _, dep := range deps {
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if err := m.safeDeleteDep(dep.Name, destPath); err != nil {
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return err
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}
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}
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if err := os.RemoveAll(destPath); err != nil {
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return errors.Wrapf(err, "failed to remove %v", destPath)
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}
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if err := fs.RenameWithFallback(tmpPath, destPath); err != nil {
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return errors.Wrap(err, "unable to move current charts to tmp dir")
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}
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return saveError
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}
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return nil
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@ -410,36 +390,75 @@ func parseOCIRef(chartRef string) (string, string, error) {
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return chartRef, tag, nil
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}
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// safeDeleteDep deletes any versions of the given dependency in the given directory.
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// safeMoveDep moves all dependencies in the source and moves them into dest.
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//
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// It does this by first matching the file name to an expected pattern, then loading
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// the file to verify that it is a chart with the same name as the given name.
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// the file to verify that it is a chart.
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//
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// Because it requires tar file introspection, it is more intensive than a basic delete.
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// Any charts in dest that do not exist in source are removed (barring local dependencies)
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//
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// Because it requires tar file introspection, it is more intensive than a basic move.
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//
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// This will only return errors that should stop processing entirely. Other errors
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// will emit log messages or be ignored.
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func (m *Manager) safeDeleteDep(name, dir string) error {
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files, err := filepath.Glob(filepath.Join(dir, name+"-*.tgz"))
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func (m *Manager) safeMoveDeps(deps []*chart.Dependency, source, dest string) error {
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existsInSourceDirectory := map[string]bool{}
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isLocalDependency := map[string]bool{}
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sourceFiles, err := ioutil.ReadDir(source)
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if err != nil {
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// Only for ErrBadPattern
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return err
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}
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for _, fname := range files {
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ch, err := loader.LoadFile(fname)
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if err != nil {
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fmt.Fprintf(m.Out, "Could not verify %s for deletion: %s (Skipping)", fname, err)
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// attempt to read destFiles; fail fast if we can't
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destFiles, err := ioutil.ReadDir(dest)
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if err != nil {
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return err
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}
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for _, dep := range deps {
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if dep.Repository == "" {
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isLocalDependency[dep.Name] = true
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}
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}
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for _, file := range sourceFiles {
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if file.IsDir() {
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continue
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}
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if ch.Name() != name {
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// This is not the file you are looking for.
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filename := file.Name()
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sourcefile := filepath.Join(source, filename)
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destfile := filepath.Join(dest, filename)
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existsInSourceDirectory[filename] = true
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if _, err := loader.LoadFile(sourcefile); err != nil {
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fmt.Fprintf(m.Out, "Could not verify %s for moving: %s (Skipping)", sourcefile, err)
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continue
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}
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if err := os.Remove(fname); err != nil {
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fmt.Fprintf(m.Out, "Could not delete %s: %s (Skipping)", fname, err)
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// NOTE: no need to delete the dest; os.Rename replaces it.
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if err := fs.RenameWithFallback(sourcefile, destfile); err != nil {
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fmt.Fprintf(m.Out, "Unable to move %s to charts dir %s (Skipping)", sourcefile, err)
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continue
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}
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}
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fmt.Fprintln(m.Out, "Deleting outdated charts")
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// find all files that exist in dest that do not exist in source; delete them (outdated dependendencies)
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for _, file := range destFiles {
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if !file.IsDir() && !existsInSourceDirectory[file.Name()] {
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fname := filepath.Join(dest, file.Name())
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ch, err := loader.LoadFile(fname)
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if err != nil {
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fmt.Fprintf(m.Out, "Could not verify %s for deletion: %s (Skipping)", fname, err)
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}
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// local dependency - skip
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if isLocalDependency[ch.Name()] {
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continue
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}
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if err := os.Remove(fname); err != nil {
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fmt.Fprintf(m.Out, "Could not delete %s: %s (Skipping)", fname, err)
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continue
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}
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}
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}
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return nil
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}
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@ -868,20 +887,6 @@ func tarFromLocalDir(chartpath, name, repo, version string) (string, error) {
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return "", errors.Errorf("can't get a valid version for dependency %s", name)
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}
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// move files from tmppath to destpath
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func move(tmpPath, destPath string) error {
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files, _ := os.ReadDir(tmpPath)
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for _, file := range files {
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filename := file.Name()
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tmpfile := filepath.Join(tmpPath, filename)
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destfile := filepath.Join(destPath, filename)
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if err := fs.RenameWithFallback(tmpfile, destfile); err != nil {
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return errors.Wrap(err, "unable to move local charts to charts dir")
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}
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}
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return nil
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}
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// The prefix to use for cache keys created by the manager for repo names
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const managerKeyPrefix = "helm-manager-"
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Matt Farina
4 years ago
committed by
GitHub