2022-09-20 11:13:46 +00:00
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module Store = Git.Mem.Make(Digestif.SHA1)
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module Sync = Git.Mem.Sync(Store)
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module Search = Git.Search.Make(Digestif.SHA1)(Store)
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module Git_commit = Git.Commit.Make(Store.Hash)
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type t = {
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2022-09-20 14:26:18 +00:00
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ctx : Mimic.ctx ;
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edn : Smart_git.Endpoint.t;
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branch : Git.Reference.t ;
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2022-09-20 11:13:46 +00:00
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store : Store.t ;
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mutable head : Store.hash option ;
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}
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let init_store () =
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let open Lwt.Infix in
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Store.v (Fpath.v ".") >|= fun r ->
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Result.map_error
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(fun e -> `Msg (Fmt.str "error setting up store %a" Store.pp_error e))
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r
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let main = Git.Reference.v "refs/heads/main"
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let capabilities =
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[ `Side_band_64k; `Multi_ack_detailed; `Ofs_delta; `Thin_pack; `Report_status ]
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let to_invalid = function
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| Ok x -> x
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| Error `Msg m -> invalid_arg m
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let split_url s =
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match String.split_on_char '#' s with
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| [ edn; branch ] ->
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Smart_git.Endpoint.of_string edn |> to_invalid,
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2022-09-23 10:39:36 +00:00
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Git.Reference.of_string ("refs/heads/" ^ branch) |> to_invalid
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2022-09-20 11:13:46 +00:00
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| _ ->
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Smart_git.Endpoint.of_string s |> to_invalid, main
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2022-09-21 12:43:41 +00:00
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let fpath_to_key ~root v =
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Mirage_kv.Key.v (Fpath.to_string (Option.get (Fpath.relativize ~root v)))
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let diff store commit0 commit1 =
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let open Lwt.Infix in
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let root = Fpath.v "." in
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let tbl0 = Hashtbl.create 0x10 in
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Store.fold store (fun () ?name ~length:_ hash _value ->
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Option.iter (fun name -> Hashtbl.add tbl0 (fpath_to_key ~root name) hash) name ;
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Lwt.return ()) () ~path:root commit0 >>= fun () ->
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let tbl1 = Hashtbl.create 0x10 in
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Store.fold store (fun () ?name ~length:_ hash _value ->
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Option.iter (fun name -> Hashtbl.add tbl1 (fpath_to_key ~root name) hash) name ;
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Lwt.return ()) () ~path:root commit1 >>= fun () ->
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let diff = Hashtbl.fold (fun name hash diff -> match Hashtbl.find_opt tbl1 name with
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| Some hash' when not (Digestif.SHA1.equal hash hash') -> `Change name :: diff
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| Some _ -> diff
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| None -> `Remove name :: diff) tbl0 [] in
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let diff = Hashtbl.fold (fun name _hash diff ->
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if Hashtbl.mem tbl0 name
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then `Add name :: diff else diff) tbl1 diff in
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Lwt.return diff
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let diff store commit0 commit1 = match commit0 with
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| Some commit0 -> diff store commit0 commit1
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| None ->
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let root = Fpath.v "." in
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Store.fold store (fun diff ?name ~length:_ _hash _value -> match name with
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| None -> Lwt.return diff
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| Some name -> Lwt.return (`Add (fpath_to_key ~root name) :: diff)) [] ~path:root commit1
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2022-09-20 14:26:18 +00:00
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let pull t =
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2022-09-20 11:13:46 +00:00
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let open Lwt.Infix in
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2022-09-23 10:39:36 +00:00
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Sync.fetch ~capabilities ~ctx:t.ctx t.edn t.store ~deepen:(`Depth 1) (`Some [ t.branch, t.branch ]) >>= fun r ->
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2022-09-20 11:13:46 +00:00
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let data =
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Result.map_error
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(fun e -> `Msg (Fmt.str "error fetching: %a" Sync.pp_error e))
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2022-09-20 14:26:18 +00:00
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r
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2022-09-20 11:13:46 +00:00
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in
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match data with
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2022-09-20 14:26:18 +00:00
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| Error _ as e -> Lwt.return e
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| Ok None -> Lwt.return (Ok [])
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| Ok Some (_, _) ->
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Store.Ref.resolve t.store t.branch >>= fun r ->
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2022-09-20 11:13:46 +00:00
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let head =
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Result.map_error
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(fun e -> `Msg (Fmt.str "error resolving branch %s: %a"
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2022-09-20 14:26:18 +00:00
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(Git.Reference.to_string t.branch)
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Store.pp_error e))
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2022-09-20 11:13:46 +00:00
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r |> to_invalid
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in
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2022-09-21 12:43:41 +00:00
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diff t.store t.head head >>= fun diff ->
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2022-09-20 14:26:18 +00:00
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t.head <- Some head;
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2022-09-21 12:43:41 +00:00
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Lwt.return (Ok diff)
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2022-09-20 14:26:18 +00:00
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let connect ctx endpoint =
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let open Lwt.Infix in
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init_store () >>= fun store ->
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let store = to_invalid store in
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let edn, branch = split_url endpoint in
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let t = { ctx ; edn ; branch ; store ; head = None } in
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pull t >>= fun r ->
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let _r = to_invalid r in
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Lwt.return t
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type key = Mirage_kv.Key.t
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type change = [
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| `Add of key
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| `Remove of key
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| `Change of key
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]
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2022-09-20 11:13:46 +00:00
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type error = Mirage_kv.error
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let pp_error ppf = Mirage_kv.pp_error ppf
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let disconnect _t = Lwt.return_unit
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2022-09-23 13:30:17 +00:00
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module SHA1 = struct
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include Digestif.SHA1
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let hash x = Hashtbl.hash x
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2022-09-26 17:24:52 +00:00
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let feed ctx ?off ?len ba = feed_bigstring ctx ?off ?len ba
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let null = digest_string ""
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let length = digest_size
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let compare a b =
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String.compare
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(to_raw_string a) (to_raw_string b)
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2022-09-23 13:30:17 +00:00
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end
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module Verbose = struct
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type 'a fiber = 'a Lwt.t
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let succ _ = Lwt.return_unit
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let print _ = Lwt.return_unit
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end
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2022-09-26 17:24:52 +00:00
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module Lwt_scheduler = struct
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module Mutex = struct
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type 'a fiber = 'a Lwt.t
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type t = Lwt_mutex.t
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let create () = Lwt_mutex.create ()
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let lock t = Lwt_mutex.lock t
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let unlock t = Lwt_mutex.unlock t
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end
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module Condition = struct
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type 'a fiber = 'a Lwt.t
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type mutex = Mutex.t
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type t = unit Lwt_condition.t
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let create () = Lwt_condition.create ()
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let wait t mutex = Lwt_condition.wait ~mutex t
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let signal t = Lwt_condition.signal t ()
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let broadcast t = Lwt_condition.broadcast t ()
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end
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type 'a t = 'a Lwt.t
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let bind x f = Lwt.bind x f
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let return x = Lwt.return x
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let parallel_map ~f lst = Lwt_list.map_p f lst
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let parallel_iter ~f lst = Lwt_list.iter_p f lst
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let detach f =
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let th, wk = Lwt.wait () in
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Lwt.async (fun () ->
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let res = f () in
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Lwt.wakeup_later wk res ;
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Lwt.return_unit) ;
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th
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end
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module Scheduler = Carton.Make (Lwt)
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module Delta = Carton_lwt.Enc.Delta (SHA1) (Verbose)
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module First_pass = Carton.Dec.Fp (SHA1)
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module Verify = Carton.Dec.Verify (SHA1) (Scheduler) (Lwt_scheduler)
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2022-09-23 13:30:17 +00:00
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let pack t ~commit stream =
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let open Lwt.Infix in
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let load t hash =
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Store.read_inflated t hash >|= function
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| None -> Fmt.failwith "%a not found" Digestif.SHA1.pp hash
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| Some (`Commit, cs) -> Carton.Dec.v ~kind:`A (Cstruct.to_bigarray cs)
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| Some (`Tree, cs) -> Carton.Dec.v ~kind:`B (Cstruct.to_bigarray cs)
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| Some (`Blob, cs) -> Carton.Dec.v ~kind:`C (Cstruct.to_bigarray cs)
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| Some (`Tag, cs) -> Carton.Dec.v ~kind:`D (Cstruct.to_bigarray cs) in
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let to_entry ~length hash = function
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| Git.Value.Commit _ -> Carton_lwt.Enc.make_entry ~kind:`A ~length hash
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| Git.Value.Tree _ -> Carton_lwt.Enc.make_entry ~kind:`B ~length hash
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| Git.Value.Blob _ -> Carton_lwt.Enc.make_entry ~kind:`C ~length hash
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| Git.Value.Tag _ -> Carton_lwt.Enc.make_entry ~kind:`D ~length hash in
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Store.fold t (fun acc ?name:_ ~length hash value ->
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Lwt.return ((to_entry ~length:(Int64.to_int length) hash value) :: acc))
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~path:(Fpath.v ".") [] commit >|= Array.of_list >>= fun entries ->
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Delta.delta ~threads:(List.init 4 (fun _ -> load t))
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~weight:10 ~uid_ln:Digestif.SHA1.digest_size entries
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>>= fun targets ->
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let offsets = Hashtbl.create (Array.length targets) in
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let find hash = Lwt.return (Option.map Int64.to_int (Hashtbl.find_opt offsets hash)) in
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let uid =
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{ Carton.Enc.uid_ln= SHA1.digest_size
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; Carton.Enc.uid_rw= SHA1.to_raw_string } in
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let b =
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{ Carton.Enc.o= Bigstringaf.create De.io_buffer_size
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; Carton.Enc.i= Bigstringaf.create De.io_buffer_size
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; Carton.Enc.q= De.Queue.create 0x10000
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; Carton.Enc.w= De.Lz77.make_window ~bits:15 } in
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let ctx = ref SHA1.empty in
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let cursor = ref 0L in
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let header = Bigstringaf.create 12 in
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Carton.Enc.header_of_pack ~length:(Array.length targets) header 0 12 ;
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stream (Some (Bigstringaf.to_string header)) ;
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ctx := SHA1.feed_bigstring !ctx header ~off:0 ~len:12 ;
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cursor := Int64.add !cursor 12L ;
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let encode_target idx =
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Hashtbl.add offsets (Carton.Enc.target_uid targets.(idx)) !cursor ;
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Carton_lwt.Enc.encode_target ~b ~find ~load:(load t) ~uid targets.(idx) ~cursor:(Int64.to_int !cursor)
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>>= fun (len, encoder) ->
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let payload = Bigstringaf.substring b.o ~off:0 ~len in
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stream (Some payload) ;
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ctx := SHA1.feed_bigstring !ctx b.o ~off:0 ~len ;
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cursor := Int64.add !cursor (Int64.of_int len) ;
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let rec go encoder = match Carton.Enc.N.encode ~o:b.o encoder with
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| `Flush (encoder, len) ->
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let payload = Bigstringaf.substring b.o ~off:0 ~len in
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stream (Some payload) ;
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ctx := SHA1.feed_bigstring !ctx b.o ~off:0 ~len ;
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cursor := Int64.add !cursor (Int64.of_int len) ;
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let encoder = Carton.Enc.N.dst encoder b.o 0 (Bigstringaf.length b.o) in
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go encoder
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| `End -> Lwt.return_unit in
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let encoder = Carton.Enc.N.dst encoder b.o 0 (Bigstringaf.length b.o) in
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go encoder in
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let rec go idx =
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if idx < Array.length targets
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then encode_target idx >>= fun () -> go (succ idx)
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else Lwt.return_unit in
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go 0 >>= fun () ->
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let hash = SHA1.get !ctx in
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stream (Some (SHA1.to_raw_string hash)) ;
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stream (Some (SHA1.to_raw_string commit)) ;
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(* XXX(dinosaure): PACK file + the hash of the commit. The hash of the commit
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is not really needed if we assert that we store only one commit finally. We
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can just, for the decoding, unpack everything and find the only commit
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available into the PACK file. *)
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stream None ;
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Lwt.return_unit
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2022-09-26 17:24:52 +00:00
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let to_octets t = match t.head with
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| None -> assert false (* TODO(dinosaure): empty PACK file *)
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| Some commit ->
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let buf = Buffer.create 0x100 in
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let stream = Option.iter (Buffer.add_string buf) in
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let open Lwt.Infix in
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pack t.store ~commit stream >|= fun () ->
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Buffer.contents buf
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let digest ~kind ?(off = 0) ?len buf =
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let len =
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match len with Some len -> len | None -> Bigstringaf.length buf - off in
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let ctx = SHA1.empty in
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let ctx =
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match kind with
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| `A -> SHA1.feed_string ctx (Fmt.str "commit %d\000" len)
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| `B -> SHA1.feed_string ctx (Fmt.str "tree %d\000" len)
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| `C -> SHA1.feed_string ctx (Fmt.str "blob %d\000" len)
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| `D -> SHA1.feed_string ctx (Fmt.str "tag %d\000" len) in
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let ctx = SHA1.feed_bigstring ctx ~off ~len buf in
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SHA1.get ctx
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let analyze stream =
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let where = Hashtbl.create 0x100 in
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let child = Hashtbl.create 0x100 in
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let sizes = Hashtbl.create 0x100 in
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let replace tbl k v = match Hashtbl.find_opt tbl k with
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| Some v' -> if v' < v then Hashtbl.replace tbl k v
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| _ -> Hashtbl.add tbl k v in
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let rec go acc tmp decoder = let open Lwt.Infix in
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match First_pass.decode decoder with
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| `Await decoder ->
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( stream () >>= function
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| Some str ->
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let tmp = Bigstringaf.of_string str ~off:0 ~len:(String.length str) in
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go acc tmp (First_pass.src decoder tmp 0 (String.length str))
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| None -> failwith "Truncated PACK file" )
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| `Peek decoder ->
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let keep = First_pass.src_rem decoder in
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( stream () >>= function
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| Some str ->
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let tmp = Bigstringaf.create (keep + String.length str) in
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Bigstringaf.blit tmp ~src_off:0 tmp ~dst_off:0 ~len:keep ;
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Bigstringaf.blit_from_string str ~src_off:0 tmp ~dst_off:keep
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~len:(String.length str) ;
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go acc tmp (First_pass.src decoder tmp 0 (keep + String.length str))
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| None -> failwith "Truncated PACK file" )
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| `Entry ({ First_pass.kind= Base _; offset; size; _ }, decoder) ->
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Hashtbl.add where offset (First_pass.count decoder - 1) ;
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Hashtbl.add sizes offset size ;
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go (Verify.unresolved_base ~cursor:offset :: acc) tmp decoder
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| `Entry ({ First_pass.kind= Ofs { sub= v; source; target; }
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; offset; _ }, decoder) ->
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Hashtbl.add where offset (First_pass.count decoder - 1) ;
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replace sizes Int64.(sub offset (of_int v)) source ;
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replace sizes offset target ;
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( try let vs = Hashtbl.find child (`Ofs Int64.(sub offset (of_int v))) in
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Hashtbl.replace child (`Ofs Int64.(sub offset (of_int v))) (offset :: vs)
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|
|
with _ -> Hashtbl.add child (`Ofs Int64.(sub offset (of_int v))) [ offset ] ) ;
|
|
|
|
go (Verify.unresolved_node :: acc) tmp decoder
|
|
|
|
| `Entry ({ First_pass.kind= Ref { ptr; target; source; }
|
|
|
|
; offset; _ }, decoder) ->
|
|
|
|
Hashtbl.add where offset (First_pass.count decoder - 1) ;
|
|
|
|
replace sizes offset (Stdlib.max target source) ;
|
|
|
|
( try let vs = Hashtbl.find child (`Ref ptr) in
|
|
|
|
Hashtbl.replace child (`Ref ptr) (offset :: vs)
|
|
|
|
with _ -> Hashtbl.add child (`Ref ptr) [ offset ] ) ;
|
|
|
|
go (Verify.unresolved_node :: acc) tmp decoder
|
|
|
|
| `End _hash ->
|
|
|
|
let where ~cursor = Hashtbl.find where cursor in
|
|
|
|
let children ~cursor ~uid =
|
|
|
|
match Hashtbl.find_opt child (`Ofs cursor),
|
|
|
|
Hashtbl.find_opt child (`Ref uid) with
|
|
|
|
| Some a, Some b -> List.sort_uniq compare (a @ b)
|
|
|
|
| Some x, None | None, Some x -> x
|
|
|
|
| None, None -> [] in
|
|
|
|
let weight ~cursor = Hashtbl.find sizes cursor in
|
|
|
|
let oracle = { Carton.Dec.where
|
|
|
|
; Carton.Dec.children
|
|
|
|
; Carton.Dec.digest
|
|
|
|
; Carton.Dec.weight } in
|
|
|
|
Lwt.return (List.rev acc, oracle)
|
|
|
|
| `Malformed err -> failwith err in
|
|
|
|
|
|
|
|
let o = Bigstringaf.create De.io_buffer_size in
|
|
|
|
let allocate _ = De.make_window ~bits:15 in
|
|
|
|
let decoder = First_pass.decoder ~o ~allocate `Manual in
|
2022-09-20 11:13:46 +00:00
|
|
|
let open Lwt.Infix in
|
2022-09-26 17:24:52 +00:00
|
|
|
go [] De.bigstring_empty decoder >>= fun (matrix, oracle) ->
|
|
|
|
Lwt.return (Array.of_list matrix, oracle)
|
|
|
|
|
|
|
|
let stream_of_string str =
|
|
|
|
let closed = ref false in
|
|
|
|
fun () -> match !closed with
|
|
|
|
| true -> Lwt.return_none
|
|
|
|
| false -> closed := true ; Lwt.return_some str
|
|
|
|
|
|
|
|
let map contents ~pos len =
|
|
|
|
Bigstringaf.of_string ~off:(Int64.to_int pos) ~len contents
|
|
|
|
|
|
|
|
let unpack contents =
|
|
|
|
let open Lwt.Infix in
|
|
|
|
analyze (stream_of_string contents) >>= fun (matrix, oracle) ->
|
|
|
|
let z = De.bigstring_create De.io_buffer_size in
|
|
|
|
let allocate bits = De.make_window ~bits in
|
|
|
|
let never _ = assert false in
|
|
|
|
let pack = Carton.Dec.make contents ~allocate ~z ~uid_ln:SHA1.length
|
|
|
|
~uid_rw:SHA1.of_raw_string never in
|
|
|
|
Verify.verify ~threads:4 pack ~map ~oracle ~verbose:ignore ~matrix >>= fun () ->
|
|
|
|
let index = Hashtbl.create (Array.length matrix) in
|
|
|
|
let iter v =
|
|
|
|
let offset = Verify.offset_of_status v in
|
|
|
|
let hash = Verify.uid_of_status v in
|
|
|
|
Hashtbl.add index hash offset in
|
|
|
|
Array.iter iter matrix ;
|
|
|
|
let pack =
|
|
|
|
Carton.Dec.make contents ~allocate ~z ~uid_ln:SHA1.length
|
|
|
|
~uid_rw:SHA1.of_raw_string (Hashtbl.find index) in
|
|
|
|
init_store ()
|
|
|
|
>|= Rresult.R.reword_error (Rresult.R.msgf "%a" Store.pp_error)
|
|
|
|
>|= Rresult.R.failwith_error_msg >>= fun store ->
|
|
|
|
let rec go commit idx =
|
|
|
|
if idx < Array.length matrix
|
|
|
|
then
|
|
|
|
let cursor = Verify.offset_of_status matrix.(idx) in
|
|
|
|
let weight = Carton.Dec.weight_of_offset ~map pack ~weight:Carton.Dec.null cursor in
|
|
|
|
let raw = Carton.Dec.make_raw ~weight in
|
|
|
|
let v = Carton.Dec.of_offset ~map pack raw ~cursor in
|
|
|
|
let kind = match Carton.Dec.kind v with
|
|
|
|
| `A -> `Commit
|
|
|
|
| `B -> `Tree
|
|
|
|
| `C -> `Blob
|
|
|
|
| `D -> `Tag in
|
|
|
|
Store.write_inflated store ~kind
|
|
|
|
(Cstruct.of_bigarray ~off:0 ~len:(Carton.Dec.len v) (Carton.Dec.raw v)) >>= fun hash ->
|
|
|
|
( if kind = `Commit
|
|
|
|
then Store.shallow store hash
|
|
|
|
else Lwt.return_unit ) >>= fun () ->
|
|
|
|
go (if kind = `Commit then Some hash else None) (succ idx)
|
|
|
|
else Lwt.return commit in
|
|
|
|
go None 0 >>= fun head -> Lwt.return (store, head)
|
2022-09-20 11:13:46 +00:00
|
|
|
|
2022-09-20 14:26:18 +00:00
|
|
|
let of_octets ctx ~remote data =
|
|
|
|
(* TODO maybe recover edn and branch from data as well? *)
|
2022-09-26 17:24:52 +00:00
|
|
|
let open Lwt.Infix in
|
|
|
|
Lwt.catch
|
|
|
|
(fun () ->
|
|
|
|
unpack data >>= fun (store, head) ->
|
|
|
|
let edn, branch = split_url remote in
|
|
|
|
Lwt.return_ok { ctx ; edn ; branch ; store ; head; })
|
|
|
|
(fun _exn ->
|
|
|
|
Lwt.return_error (`Msg "Invalid PACK file"))
|
2022-09-20 11:13:46 +00:00
|
|
|
|
2022-09-21 10:01:51 +00:00
|
|
|
let exists t key =
|
|
|
|
let open Lwt.Infix in
|
|
|
|
match t.head with
|
|
|
|
| None -> Lwt.return (Ok None)
|
|
|
|
| Some head ->
|
2022-09-26 10:03:12 +00:00
|
|
|
Search.mem t.store head (`Commit (`Path (Mirage_kv.Key.segments key))) >>= function
|
2022-09-21 10:01:51 +00:00
|
|
|
| false -> Lwt.return (Ok None)
|
|
|
|
| true ->
|
2022-09-26 10:03:12 +00:00
|
|
|
Search.find t.store head (`Commit (`Path (Mirage_kv.Key.segments key)))
|
2022-09-21 10:01:51 +00:00
|
|
|
>|= Option.get >>= Store.read_exn t.store >>= function
|
|
|
|
| Blob _ -> Lwt.return (Ok (Some `Value))
|
|
|
|
| Tree _ | Commit _ | Tag _ -> Lwt.return (Ok (Some `Dictionary))
|
2022-09-20 11:13:46 +00:00
|
|
|
|
|
|
|
let get t key =
|
|
|
|
let open Lwt.Infix in
|
2022-09-20 11:27:49 +00:00
|
|
|
match t.head with
|
2022-09-20 11:13:46 +00:00
|
|
|
| None -> Lwt.return (Error (`Not_found key))
|
2022-09-20 11:27:49 +00:00
|
|
|
| Some head ->
|
2022-09-26 10:03:12 +00:00
|
|
|
Search.find t.store head (`Commit (`Path (Mirage_kv.Key.segments key))) >>= function
|
2022-09-20 11:27:49 +00:00
|
|
|
| None -> Lwt.return (Error (`Not_found key))
|
|
|
|
| Some blob ->
|
|
|
|
Store.read_exn t.store blob >|= function
|
|
|
|
| Blob b -> Ok (Git.Blob.to_string b)
|
2022-09-21 10:02:19 +00:00
|
|
|
| _ -> Error (`Value_expected key)
|
2022-09-20 11:13:46 +00:00
|
|
|
|
|
|
|
let get_partial t key ~offset ~length =
|
|
|
|
let open Lwt_result.Infix in
|
|
|
|
get t key >|= fun data ->
|
|
|
|
if String.length data < offset then
|
|
|
|
""
|
|
|
|
else
|
|
|
|
let l = min length (String.length data - offset) in
|
|
|
|
String.sub data offset l
|
|
|
|
|
2022-09-21 10:02:34 +00:00
|
|
|
let list t key =
|
|
|
|
let open Lwt.Infix in
|
|
|
|
match t.head with
|
|
|
|
| None -> Lwt.return (Error (`Not_found key))
|
|
|
|
| Some head ->
|
2022-09-26 10:03:12 +00:00
|
|
|
Search.find t.store head (`Commit (`Path (Mirage_kv.Key.segments key))) >>= function
|
2022-09-21 10:02:34 +00:00
|
|
|
| None -> Lwt.return (Error (`Not_found key))
|
|
|
|
| Some tree ->
|
|
|
|
Store.read_exn t.store tree >>= function
|
|
|
|
| Tree t ->
|
|
|
|
Lwt_list.map_p (fun { Git.Tree.perm; name; _ } -> match perm with
|
|
|
|
| `Commit | `Dir -> Lwt.return (name, `Dictionary)
|
|
|
|
| `Everybody | `Exec | `Normal -> Lwt.return (name, `Value)
|
|
|
|
| `Link -> failwith "Unimplemented link follow")
|
|
|
|
(Store.Value.Tree.to_list t) >|= Result.ok
|
|
|
|
| _ -> Lwt.return (Error (`Dictionary_expected key))
|
2022-09-20 11:13:46 +00:00
|
|
|
|
2022-09-20 14:26:18 +00:00
|
|
|
let last_modified t key =
|
|
|
|
let open Lwt.Infix in
|
|
|
|
Option.fold
|
|
|
|
~none:(Lwt.return (Error (`Not_found key)))
|
|
|
|
~some:(fun head ->
|
|
|
|
Store.read_exn t.store head >|= function
|
|
|
|
| Commit c ->
|
|
|
|
let author = Git_commit.author c in
|
|
|
|
let secs, tz_offset = author.Git.User.date in
|
|
|
|
let secs =
|
|
|
|
Option.fold ~none:secs
|
|
|
|
~some:(fun { Git.User.sign ; hours ; minutes } ->
|
|
|
|
let tz_off = Int64.(mul (add (mul (of_int hours) 60L) (of_int minutes)) 60L) in
|
|
|
|
match sign with
|
|
|
|
| `Plus -> Int64.(sub secs tz_off)
|
|
|
|
| `Minus -> Int64.(add secs tz_off))
|
|
|
|
tz_offset
|
|
|
|
in
|
|
|
|
let ts =
|
|
|
|
Option.fold ~none:Ptime.epoch ~some:Fun.id (Ptime.of_float_s (Int64.to_float secs))
|
|
|
|
in
|
|
|
|
Ok (Ptime.(Span.to_d_ps (to_span ts)))
|
|
|
|
| _ -> assert false)
|
|
|
|
t.head
|
|
|
|
|
|
|
|
let digest t key =
|
|
|
|
Option.fold
|
|
|
|
~none:(Error (`Not_found key))
|
|
|
|
~some:(fun x -> Ok (Store.Hash.to_hex x))
|
|
|
|
t.head |> Lwt.return
|
2022-09-20 11:13:46 +00:00
|
|
|
|
|
|
|
let size t key =
|
|
|
|
let open Lwt_result.Infix in
|
|
|
|
get t key >|= fun data ->
|
|
|
|
String.length data
|