package resto-directory

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package resto-directory
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Module Resto_directory.MakeSource

Parameters

Signature

Sourcemodule Service : module type of struct include Resto.MakeService(Encoding) end

Services.

Sourcetype step =
  1. | Static of string
    (*

    A literal chunk

    *)
  2. | Dynamic of Resto.Arg.descr
    (*

    A chunk which describes a argument to a service

    *)
  3. | DynamicTail of Resto.Arg.descr
    (*

    The remainder of the chunks are to be interpreted as a list of arguments

    *)

The different chunks of a path

E.g., /archive/<year>/<months>/ has a Static "archive" step followed by a Dynamic _ step followed by a Dynamic _ step. Each Dynamic _ step has an Resto.Arg payload describing the chunk.

Sourcetype conflict =
  1. | CService of Resto.meth
  2. | CDir
  3. | CBuilder
  4. | CTail
  5. | CTypes of Resto.Arg.descr * Resto.Arg.descr
  6. | CType of Resto.Arg.descr * string list

Possible error while registring services.

Sourcetype ('query, 'input, 'output, 'error) types = {
  1. query : 'query Resto.Query.t;
  2. input : 'input Service.input;
  3. output : 'output Encoding.t;
  4. error : 'error Encoding.t;
}
Sourcetype registered_service =
  1. | Service : {
    1. types : ('q, 'i, 'o, 'e) types;
    2. handler : 'q -> 'i -> ('o, 'e) Answer.t Lwt.t;
    } -> registered_service
Sourcetype 'prefix t

Dispatch tree

Sourcetype 'prefix directory = 'prefix t
Sourcetype lookup_error = [
  1. | `Not_found
  2. | `Method_not_allowed of Resto.meth list
  3. | `Cannot_parse_path of string list * Resto.Arg.descr * string
]
Sourceval lookup : 'prefix directory -> 'prefix -> Resto.meth -> string list -> (registered_service, [> lookup_error ]) result Lwt.t

lookup d m p is Ok (Service _) if there is a service s registered in d and both the method of s is m and the path of s matches p. It is Error _ otherwise.

If it is Ok (Service _) then the returned value corresponds to the registered service.

Sourceval lookup_uri_desc : 'prefix directory -> 'prefix -> Resto.meth -> string list -> (string, [> lookup_error ]) result Lwt.t

lookup_uri_desc d p is Ok u where u is a formated URI description, if there is a service s registered in d and the path of s matches p. It is Error _ otherwise.

For instance, given the following path p: "/entries-by-date/2022/01/10" where "2022", "01", and "10" are expected to be paramaters in the path of s, the function will evaluate in "/entries-by-date/<year>/<month>/<day>".

Sourceval allowed_methods : 'prefix directory -> 'prefix -> string list -> (Resto.meth list, [> lookup_error ]) result Lwt.t

allowed_methods d p is the set of methods m such that lookup d m p is Ok _. In other words, it is the set of methods m such that a service has been registered in d for a path that matches p.

Sourceval transparent_lookup : 'prefix directory -> ('meth, 'prefix, 'params, 'query, 'input, 'output, 'error) Service.t -> 'params -> 'query -> 'input -> [> ('output, 'error) Answer.t ] Lwt.t
Sourceval empty : 'prefix directory

Empty tree

Sourceval map : ('a -> 'b Lwt.t) -> 'b directory -> 'a directory
Sourceval prefix : ('pr, 'p) Resto.Path.path -> 'p directory -> 'pr directory

prefix p d is a directory of services which includes a service registered on the path p / q for each service registered on the path q in d.

  • raises [Invalid_argument]

    if p is a dynamic path.

Sourceval merge : 'a directory -> 'a directory -> 'a directory

merge d1 d2 is a directory which includes all the services of d1 and d2.

  • raises [Conflict]

    if one or more service from d1 conflicts with one or more service from d2.

Sourceexception Conflict of step list * conflict
Sourceval register : 'prefix directory -> ('meth, 'prefix, 'params, 'query, 'input, 'output, 'error) Service.t -> ('params -> 'query -> 'input -> [< ('output, 'error) Answer.t ] Lwt.t) -> 'prefix directory

register d s h is a directory that contains all the services registered in d plus the service s. Requests to the service s are handled by the handler h.

Sourceval register0 : unit directory -> ('m, unit, unit, 'q, 'i, 'o, 'e) Service.t -> ('q -> 'i -> [< ('o, 'e) Answer.t ] Lwt.t) -> unit directory

Registring handler in service tree. Curryfied variant.

Sourceval register1 : 'prefix directory -> ('m, 'prefix, unit * 'a, 'q, 'i, 'o, 'e) Service.t -> ('a -> 'q -> 'i -> [< ('o, 'e) Answer.t ] Lwt.t) -> 'prefix directory
Sourceval register2 : 'prefix directory -> ('m, 'prefix, (unit * 'a) * 'b, 'q, 'i, 'o, 'e) Service.t -> ('a -> 'b -> 'q -> 'i -> [< ('o, 'e) Answer.t ] Lwt.t) -> 'prefix directory
Sourceval register3 : 'prefix directory -> ('m, 'prefix, ((unit * 'a) * 'b) * 'c, 'q, 'i, 'o, 'e) Service.t -> ('a -> 'b -> 'c -> 'q -> 'i -> [< ('o, 'e) Answer.t ] Lwt.t) -> 'prefix directory
Sourceval register4 : 'prefix directory -> ('m, 'prefix, (((unit * 'a) * 'b) * 'c) * 'd, 'q, 'i, 'o, 'e) Service.t -> ('a -> 'b -> 'c -> 'd -> 'q -> 'i -> [< ('o, 'e) Answer.t ] Lwt.t) -> 'prefix directory
Sourceval register5 : 'prefix directory -> ('m, 'prefix, ((((unit * 'a) * 'b) * 'c) * 'd) * 'f, 'q, 'i, 'o, 'e) Service.t -> ('a -> 'b -> 'c -> 'd -> 'f -> 'q -> 'i -> [< ('o, 'e) Answer.t ] Lwt.t) -> 'prefix directory
Sourceval register_dynamic_directory : ?descr:string -> 'prefix directory -> ('prefix, 'a) Resto.Path.path -> ('a -> 'a directory Lwt.t) -> 'prefix directory

Registring dynamic subtree.

Sourceval register_dynamic_directory1 : ?descr:string -> 'prefix directory -> ('prefix, unit * 'a) Resto.Path.path -> ('a -> (unit * 'a) directory Lwt.t) -> 'prefix directory

Registring dynamic subtree. (Curryfied variant)

Sourceval register_dynamic_directory2 : ?descr:string -> 'prefix directory -> ('prefix, (unit * 'a) * 'b) Resto.Path.path -> ('a -> 'b -> ((unit * 'a) * 'b) directory Lwt.t) -> 'prefix directory
Sourceval register_dynamic_directory3 : ?descr:string -> 'prefix directory -> ('prefix, ((unit * 'a) * 'b) * 'c) Resto.Path.path -> ('a -> 'b -> 'c -> (((unit * 'a) * 'b) * 'c) directory Lwt.t) -> 'prefix directory
Sourceval register_describe_directory_service : 'prefix directory -> ('prefix, 'prefix, 'error) Service.description_service -> 'prefix directory

Registring a description service.

Sourceval describe_directory : recurse:bool -> ?arg:'a -> 'a directory -> Encoding.schema Resto.Description.directory Lwt.t