robur/git-kv
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Don't try to push if the tree_root still is the same

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If the user just read into the batched function and does not change anything,
we just return the result.
This commit is contained in:
Romain Calascibetta 2022-10-29 22:30:12 +02:00
parent b5fa25d9a5
commit 64fc2402ab
1 changed files with 20 additions and 17 deletions
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src/git_kv.ml
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@ -630,12 +630,15 @@ module Make (Pclock : Mirage_clock.PCLOCK) = struct
(* XXX(dinosaure): we assume that only [batch] can reset [t.committed] to [None] and (* XXX(dinosaure): we assume that only [batch] can reset [t.committed] to [None] and
we ensured that [batch] can not be called into [f]. So we are sure that [t'.committed] we ensured that [batch] can not be called into [f]. So we are sure that [t'.committed]
must be [Some _] in anyway. *) must be [Some _] in anyway. *)
let[@warning "-8"] Some (tree_root_hash, _) = t'.committed in let[@warning "-8"] Some (new_tree_root_hash, _) = t'.committed in
if Digestif.SHA1.equal new_tree_root_hash tree_root_hash
then Lwt.return_ok res (* XXX(dinosaure): nothing to send! *)
else
let action = Option.fold ~none:(`Create t.branch) ~some:(fun _ -> `Update (t.branch, t.branch)) t.head in let action = Option.fold ~none:(`Create t.branch) ~some:(fun _ -> `Update (t.branch, t.branch)) t.head in
let parents = Option.value ~default:[] (Option.map (fun head -> [ head ]) t.head) in let parents = Option.value ~default:[] (Option.map (fun head -> [ head ]) t.head) in
let committer = author ~now in let committer = author ~now in
let author = author ~now in let author = author ~now in
let commit = Store.Value.Commit.make ~tree:tree_root_hash ~author ~committer let commit = Store.Value.Commit.make ~tree:new_tree_root_hash ~author ~committer
~parents (Some "Committed by git-kv") in ~parents (Some "Committed by git-kv") in
Store.write t.store (Git.Value.Commit commit) >>= fun (hash, _) -> Store.write t.store (Git.Value.Commit commit) >>= fun (hash, _) ->
t.head <- Some hash ; t.head <- Some hash ;