67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
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package git
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import (
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"errors"
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"time"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gopkg.in/src-d/go-git.v4/plumbing/storer"
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)
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type PruneHandler func(unreferencedObjectHash plumbing.Hash) error
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type PruneOptions struct {
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// OnlyObjectsOlderThan if set to non-zero value
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// selects only objects older than the time provided.
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OnlyObjectsOlderThan time.Time
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// Handler is called on matching objects
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Handler PruneHandler
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}
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var ErrLooseObjectsNotSupported = errors.New("Loose objects not supported")
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// DeleteObject deletes an object from a repository.
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// The type conveniently matches PruneHandler.
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func (r *Repository) DeleteObject(hash plumbing.Hash) error {
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los, ok := r.Storer.(storer.LooseObjectStorer)
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if !ok {
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return ErrLooseObjectsNotSupported
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}
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return los.DeleteLooseObject(hash)
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}
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func (r *Repository) Prune(opt PruneOptions) error {
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los, ok := r.Storer.(storer.LooseObjectStorer)
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if !ok {
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return ErrLooseObjectsNotSupported
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}
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pw := newObjectWalker(r.Storer)
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err := pw.walkAllRefs()
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if err != nil {
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return err
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}
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// Now walk all (loose) objects in storage.
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return los.ForEachObjectHash(func(hash plumbing.Hash) error {
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// Get out if we have seen this object.
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if pw.isSeen(hash) {
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return nil
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}
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// Otherwise it is a candidate for pruning.
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// Check out for too new objects next.
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if !opt.OnlyObjectsOlderThan.IsZero() {
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// Errors here are non-fatal. The object may be e.g. packed.
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// Or concurrently deleted. Skip such objects.
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t, err := los.LooseObjectTime(hash)
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if err != nil {
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return nil
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}
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// Skip too new objects.
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if !t.Before(opt.OnlyObjectsOlderThan) {
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return nil
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}
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}
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return opt.Handler(hash)
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})
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}
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