storage/dotgit: add KeepDescriptors option

This option maintains packfile file descriptors opened after reading
objects from them. It improves performance as it does not have to be
opening packfiles each time an object is needed.

Also adds Close to EncodedObjectStorer to close all the files manualy.

Signed-off-by: Javi Fontan <jfontan@gmail.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/plumbing/storer/object.go b/plumbing/storer/object.go
index 92aa629..806b6bb 100644
--- a/plumbing/storer/object.go
+++ b/plumbing/storer/object.go
@@ -40,6 +40,8 @@ type EncodedObjectStorer interface {
 	// HasEncodedObject returns ErrObjNotFound if the object doesn't
 	// exist.  If the object does exist, it returns nil.
 	HasEncodedObject(plumbing.Hash) error
+	// Close any opened files.
+	Close() error
 }
 
 // DeltaObjectStorer is an EncodedObjectStorer that can return delta
diff --git a/plumbing/storer/object_test.go b/plumbing/storer/object_test.go
index 6b4fe0f..adddec4 100644
--- a/plumbing/storer/object_test.go
+++ b/plumbing/storer/object_test.go
@@ -157,3 +157,7 @@ func (o *MockObjectStorage) IterEncodedObjects(t plumbing.ObjectType) (EncodedOb
 func (o *MockObjectStorage) Begin() Transaction {
 	return nil
 }
+
+func (o *MockObjectStorage) Close() error {
+	return nil
+}