Source file ezRequest.ml
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open EzAPI
type error_handler = (int -> string option -> unit)
module type S = EzReq_S.S
module type Interface = EzReq_S.Interface
let request_reply_hook = ref (fun () -> ())
let before_hook = ref (fun () -> ())
let decode_result ?error io f res =
match IO.from_string io f res with
| Ok () -> ()
| Error e -> match error with
| None -> ()
| Some error -> error (-3) (Some (EzEncoding.error_to_string ~from:res e))
let any_get = ref (fun ?meth:_m ?headers:_ ?msg:_ _url f ->
f (Error (-2,Some "No http client loaded")))
let any_post = ref (fun ?meth:_m ?content_type:(_x="") ?content:(_y="") ?headers:_ ?msg:_ _url f ->
f (Error (-2,Some "No http client loaded")))
module Make(S : Interface) : S = struct
let init () =
any_get := S.get;
any_post := S.post
let internal_get ?meth ? ?msg ?error (URL url) f =
EzAPI.warnings (fun s -> Printf.kprintf EzDebug.log "EzRequest.warning: %s" s);
let meth = match meth with None -> None | Some m ->
Some (String.uppercase_ascii @@ Meth.to_string m) in
S.get ?meth ?msg url ?headers
(fun code ->
!request_reply_hook ();
match code with
| Ok res -> f res
| Error (n, body) ->
match error with
| None -> ()
| Some f -> f n body)
let internal_post ?meth ?content_type ?content ? ?msg ?error (URL url) f =
EzAPI.warnings (fun s -> Printf.kprintf EzDebug.log "EzRequest.warning: %s" s);
let meth = match meth with None -> None | Some m -> Some (
String.uppercase_ascii @@ Meth.to_string m) in
S.post ?meth ?content_type ?content ?headers ?msg url
(fun code ->
!request_reply_hook ();
match code with
| Ok res -> f res
| Error (n, body) ->
match error with
| None -> ()
| Some f -> f n body)
let add_hook f =
let old_hook = !before_hook in
before_hook := (fun () -> old_hook (); f ())
let add_reply_hook f =
let old_hook = !request_reply_hook in
request_reply_hook := (fun () -> old_hook (); f ())
let handlers ?error service f =
let error code msg =
match Service.error service ~code, msg with
| Some enc, Some s ->
decode_result ?error (Json enc) (fun x -> f (Error x)) s
| _, _ -> match error with
| Some error -> error code msg
| None -> ()
in
let encoding = Service.output service in
let ok = decode_result ~error encoding (fun x -> f (Ok x)) in
ok, error
let get = internal_get
let post = internal_post
module Raw = struct
let get0 ?(post=false) ? ?(params=[]) ?msg ?error api service f =
!before_hook ();
let ok, error = handlers ?error service.s f in
let meth = Service.meth service.s in
if post then
let url = forge0 api service [] in
let content = encode_params service.s params in
let content_type = Url.content_type in
let meth = if meth = `GET then `POST else meth in
internal_post ~meth ?msg url ~content ~content_type ?headers ~error ok
else
let url = forge0 api service params in
internal_get ~meth ?msg url ?headers ~error ok
let get1 ?(post=false) ? ?(params=[]) ?msg ?error api service arg f =
!before_hook ();
let ok, error = handlers ?error service.s f in
let meth = Service.meth service.s in
if post then
let url = forge1 api service arg [] in
let content = encode_params service.s params in
let content_type = Url.content_type in
let meth = if meth = `GET then `POST else meth in
internal_post ~meth ?msg url ~content ~content_type ?headers ~error ok
else
let url = forge1 api service arg params in
internal_get ~meth ?msg url ?headers ~error ok
let get2 ?(post=false) ? ?(params=[]) ?msg ?error api service arg1 arg2 f =
!before_hook ();
let ok, error = handlers ?error service.s f in
let meth = Service.meth service.s in
if post then
let url = forge2 api service arg1 arg2 [] in
let content = encode_params service.s params in
let content_type = Url.content_type in
let meth = if meth = `GET then `POST else meth in
internal_post ~meth ?msg url ~content ~content_type ?headers ~error ok
else
let url = forge2 api service arg1 arg2 params in
internal_get ~meth ?msg url ?headers ~error ok
let post0 :
type i.
?headers:(string * string) list ->
?params:(Param.t * param_value) list ->
?msg:string ->
?url_encode:bool ->
?error:error_handler ->
input:i ->
EzAPI.base_url ->
(i, 'output, 'error, 'security) post_service0 ->
(('output, 'error) Result.result -> unit) ->
unit =
fun ? ?(params=[]) ?msg ?(url_encode=false) ?error ~input api service f ->
!before_hook ();
let ok, error = handlers ?error service.s f in
let meth = Service.meth service.s in
let input_encoding = Service.input service.s in
let url = forge0 api service params in
let content, content_type = match input_encoding with
| Empty -> "", "application/json"
| Raw [] -> input, "application/octet-stream"
| Raw (h :: _) -> input, Mime.to_string h
| Json enc ->
if not url_encode then
EzEncoding.construct enc input, "application/json"
else
Url.encode_obj enc input, Url.content_type in
internal_post ~meth ?msg url ~content ~content_type ?headers ~error ok
let post1 :
type i.
?headers:(string * string) list ->
?params:(Param.t * param_value) list ->
?msg:string ->
?url_encode:bool ->
?error:error_handler ->
input:i ->
EzAPI.base_url ->
('arg, i, 'output, 'error, 'security) post_service1 ->
'arg ->
(('output, 'error) Result.result -> unit) ->
unit =
fun ? ?(params=[]) ?msg ?(url_encode=false) ?error ~input api service arg f ->
!before_hook ();
let ok, error = handlers ?error service.s f in
let meth = Service.meth service.s in
let input_encoding = Service.input service.s in
let url = forge1 api service arg params in
let content, content_type = match input_encoding with
| Empty -> "", "application/json"
| Raw [] -> input, "application/octet-stream"
| Raw (h :: _) -> input, Mime.to_string h
| Json enc ->
if not url_encode then
EzEncoding.construct enc input, "application/json"
else
Url.encode_obj enc input, Url.content_type in
internal_post ?msg ~meth url ~content ~content_type ?headers ~error ok
let post2 :
type i.
?headers:(string * string) list ->
?params:(Param.t * param_value) list ->
?msg:string ->
?url_encode:bool ->
?error:error_handler ->
input:i ->
EzAPI.base_url ->
('arg1, 'arg2, i, 'output, 'error, 'security) post_service2 ->
'arg1 -> 'arg2 ->
(('output, 'error) Result.result -> unit) ->
unit =
fun ? ?(params=[]) ?msg ?(url_encode=false) ?error ~input api service arg1 arg2 f ->
!before_hook ();
let ok, error = handlers ?error service.s f in
let meth = Service.meth service.s in
let input_encoding = Service.input service.s in
let url = forge2 api service arg1 arg2 params in
let content, content_type = match input_encoding with
| Empty -> "", "application/json"
| Raw [] -> input, "application/octet-stream"
| Raw (h :: _) -> input, Mime.to_string h
| Json enc ->
if not url_encode then
EzEncoding.construct enc input, "application/json"
else
Url.encode_obj enc input, Url.content_type in
internal_post ?msg ~meth url ~content ~content_type ?headers ~error ok
end
include Raw
module Legacy = struct
let unresultize f = function
| Ok res -> f res
| Error _u -> assert false
let get0 api service
msg ?post ? ?error ?params f () =
let msg = if msg = "" then None else Some msg in
Raw.get0 api service ?msg ?post ?headers ?error ?params (unresultize f)
let get1 api service
msg ?post ? ?error ?params f arg =
let msg = if msg = "" then None else Some msg in
Raw.get1 api service ?msg ?post ?headers ?error ?params arg (unresultize f)
let get2 api service
msg ?post ? ?error ?params f arg1 arg2 =
let msg = if msg = "" then None else Some msg in
Raw.get2 api service ?msg ?post ?headers ?error ?params arg1 arg2 (unresultize f)
let post0 api service
msg ? ?error ?params ?url_encode ~input f =
let msg = if msg = "" then None else Some msg in
Raw.post0 api service ?msg ?headers ?error ?params ?url_encode ~input (unresultize f)
let post1 api service
msg ? ?error ?params ?url_encode ~input arg f =
let msg = if msg = "" then None else Some msg in
Raw.post1 api service ?msg ?headers ?error ?params ?url_encode ~input arg (unresultize f)
let post2 api service
msg ? ?error ?params ?url_encode ~input arg1 arg2 f =
let msg = if msg = "" then None else Some msg in
Raw.post2 api service ?msg ?headers ?error ?params ?url_encode ~input arg1 arg2 (unresultize f)
let get ?meth msg url ? ?error f =
let msg = if msg = "" then None else Some msg in
get ?meth ?headers ?msg ?error url f
let post ?meth ?content_type ?content msg url ? ?error f =
let msg = if msg = "" then None else Some msg in
post ?meth ?content_type ?content ?headers ?msg ?error url f
end
end
module ANY : S = Make(struct
let get ?meth ? ?msg url f =
!any_get ?meth ?msg url ?headers f
let post ?meth ?content_type ?content ? ?msg url f =
!any_post ?meth ?content_type ?content ?msg url ?headers f
end)