2 * Copyright (C) 2016, 2017 "IoT.bzh"
3 * Author: José Bollo <jose.bollo@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
20 /* avoid inclusion of <json-c/json.h> */
24 * Interface for internal of services
25 * It records the functions to be called for the request.
26 * Don't use this structure directly.
27 * Use the helper functions documented below.
29 struct afb_service_itf
31 /* CAUTION: respect the order, add at the end */
33 void (*call)(void *closure, const char *api, const char *verb, struct json_object *args,
34 void (*callback)(void*, int, struct json_object*), void *callback_closure);
38 * Object that encapsulate accesses to service items
42 const struct afb_service_itf *itf;
47 * Calls the 'verb' of the 'api' with the arguments 'args' and 'verb' in the name of the binding.
48 * The result of the call is delivered to the 'callback' function with the 'callback_closure'.
50 * The 'callback' receives 3 arguments:
51 * 1. 'closure' the user defined closure pointer 'callback_closure',
52 * 2. 'iserror' a boolean status being true (not null) when an error occured,
53 * 2. 'result' the resulting data as a JSON object.
55 * @param service The service as received during initialisation
56 * @param api The api name of the method to call
57 * @param verb The verb name of the method to call
58 * @param args The arguments to pass to the method
59 * @param callback The to call on completion
60 * @param callback_closure The closure to pass to the callback
62 * @returns 0 in case of success or -1 in case of error.
64 * @see also 'afb_req_subcall'
66 static inline void afb_service_call(
67 struct afb_service service,
70 struct json_object *args,
71 void (*callback)(void*closure, int iserror, struct json_object *result),
72 void *callback_closure)
74 service.itf->call(service.closure, api, verb, args, callback, callback_closure);