package irmin-fs

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Parameters
Signature
1. Append-only stores
  1. Read-only stores

Generic file-system backend for Irmin

Install

dune-project

Dependency

github.com Readme Changelog ISC License Edit opam file Versions (4)

Authors

Maintainers

T

thomas@gazagnaire.org

Sources

irmin-3.10.0.tbz

sha256=92a9de7a0a2a35c2feba0c35a806b1f0df24c1c0d15164eebf3f919296d26715

sha512=0203ec5117a851ad5afeb2f9091659b4e142e231b6b945caab93f4d7beb23397c8ac43f7056e91d18f4bff0be1062f6ae966d221f877c229328c0cbbf29fd9f0

doc/irmin-fs.unix/Irmin_fs_unix/Append_only_ext/index.html

Module `Irmin_fs_unix.Append_only_ext`Source

Parameters

module C : Irmin_fs.Config

module K : Irmin.Type.S

module V : Irmin.Type.S

Signature

Append-only stores

Append-only stores are store where it is possible to read and add new values.

Read-only stores

Read-only stores are store where it is only possible to read existing values.

Sourcetype -'a t

The type for stores. The 'a phantom type carries information about the store mutability.

Sourcetype key = K.t

The type for keys.

Sourcetype value = V.t

The type for raw values.

Sourceval mem : [> Irmin.Perms.read ] t -> key -> bool Lwt.t

mem t k is true iff k is present in t.

Sourceval find : [> Irmin.Perms.read ] t -> key -> value option Lwt.t

find t k is Some v if k is associated to v in t and None is k is not present in t.

Sourceval add : [> Irmin.Perms.write ] t -> key -> value -> unit Lwt.t

Write the contents of a value to the store.

Sourceval close : 'a t -> unit Lwt.t

close t frees up all the resources associated with t. Any operations run on a closed handle will raise Closed.

Source

val batch : 
  Irmin.Perms.read t ->
  ([ Irmin.Perms.read | Irmin.Perms.write ] t -> 'a Lwt.t) ->
  'a Lwt.t

batch t f applies the writes in f in a separate batch. The exact guarantees depend on the implementation.

Sourceval v : Irmin__.Conf.t -> Irmin.Perms.read t Lwt.t

v config is a function returning fresh store handles, with the configuration config, which is provided by the backend.