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package packed
import (
"errors"
"fmt"
"io/fs"
"os"
"slices"
"strings"
)
// Promote publishes all finalized pack artifacts in the quarantine into the
// parent packed store and invalidates the receiver.
func (quarantine *packQuarantine) Promote() error {
closeErr := quarantine.Close()
promoteErr := promotePackQuarantine(quarantine.parent.root, quarantine.tempName, quarantine.tempRoot)
tempRootErr := quarantine.tempRoot.Close()
removeErr := quarantine.parent.root.RemoveAll(quarantine.tempName)
if closeErr != nil {
return closeErr
}
if tempRootErr != nil {
return tempRootErr
}
if promoteErr != nil {
return promoteErr
}
return removeErr
}
func promotePackQuarantine(parent *os.Root, tempName string, tempRoot *os.Root) error {
entries, err := fs.ReadDir(tempRoot.FS(), ".")
if err != nil && !errors.Is(err, fs.ErrNotExist) {
return err
}
slices.SortFunc(entries, func(left, right fs.DirEntry) int {
return packPromotionPriority(left.Name()) - packPromotionPriority(right.Name())
})
for _, entry := range entries {
if entry.IsDir() {
return fmt.Errorf("packed: quarantine contains unexpected directory %q", entry.Name())
}
err := promotePackQuarantineFile(parent, tempName, entry.Name())
if err != nil {
return err
}
}
return nil
}
func promotePackQuarantineFile(parent *os.Root, tempName, name string) error {
src := tempName + "/" + name
err := parent.Link(src, name)
if err == nil {
_ = parent.Remove(src)
return nil
}
if errors.Is(err, fs.ErrExist) {
_ = parent.Remove(src)
return nil
}
return fmt.Errorf("packed: promote quarantine %q -> %q: %w", src, name, err)
}
func packPromotionPriority(name string) int {
switch {
case strings.HasPrefix(name, "pack-") && strings.HasSuffix(name, ".pack"):
return 1
case strings.HasPrefix(name, "pack-") && strings.HasSuffix(name, ".rev"):
return 2
case strings.HasPrefix(name, "pack-") && strings.HasSuffix(name, ".idx"):
return 3
default:
return 0
}
}
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