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package repository
import (
"errors"
"fmt"
"os"
objectid "codeberg.org/lindenii/furgit/object/id"
objectstore "codeberg.org/lindenii/furgit/object/store"
objectloose "codeberg.org/lindenii/furgit/object/store/loose"
objectmix "codeberg.org/lindenii/furgit/object/store/mix"
objectpacked "codeberg.org/lindenii/furgit/object/store/packed"
)
// openObjectStore opens the roots and object stores of both
// the loose and packed stores for a particular repo root and
// object ID hashing algorithm.
//
// Since real object store implementations do not take ownership of
// the roots given to them, and since composite object stores do not
// take ownership of the object stores that they consist of, all
// of them are returned and should be closed by the caller.
//
//nolint:ireturn
func openObjectStore(
root *os.Root,
algo objectid.Algorithm,
) (
objects objectstore.ReadingStore,
objectsRoot *os.Root,
objectsPackRoot *os.Root,
objectsLoose *objectloose.Store,
objectsPacked *objectpacked.Store,
err error,
) {
objectsRoot, err = root.OpenRoot("objects")
if err != nil {
return nil, nil, nil, nil, nil, fmt.Errorf("repository: open objects: %w", err)
}
objectsLoose, err = objectloose.New(objectsRoot, algo)
if err != nil {
_ = objectsRoot.Close()
return nil, nil, nil, nil, nil, err
}
backends := []objectstore.ReadingStore{objectsLoose}
objectsPackRoot, err = objectsRoot.OpenRoot("pack")
if err == nil {
objectsPacked, err = objectpacked.New(
objectsPackRoot,
algo,
objectpacked.Options{RefreshPolicy: objectpacked.RefreshPolicyNever},
)
if err != nil {
_ = objectsPackRoot.Close()
_ = objectsLoose.Close()
_ = objectsRoot.Close()
return nil, nil, nil, nil, nil, err
}
backends = append(backends, objectsPacked)
} else if !errors.Is(err, os.ErrNotExist) {
_ = objectsLoose.Close()
_ = objectsRoot.Close()
return nil, nil, nil, nil, nil, fmt.Errorf("repository: open objects/pack: %w", err)
}
objects = objectmix.New(backends...)
return objects, objectsRoot, objectsPackRoot, objectsLoose, objectsPacked, nil
}
// Objects returns the configured object store.
//
// Use Objects for direct object-ID lookups, object headers, sizes, raw object
// bytes, or streamed object contents. Callers who want typed object values
// should usually prefer [Repository.Fetcher].
//
// Labels: Life-Parent, Close-No.
//
//nolint:ireturn
func (repo *Repository) Objects() objectstore.ReadingStore {
return repo.objects
}
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