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/*
* Copyright (C) 2016, 2017 "IoT.bzh"
* Author: José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
/* avoid inclusion of <json-c/json.h> */
struct json_object;
/*
* Interface for internal of services
* It records the functions to be called for the request.
* Don't use this structure directly.
* Use the helper functions documented below.
*/
struct afb_service_itf
{
/* CAUTION: respect the order, add at the end */
void (*call)(void *closure, const char *api, const char *verb, struct json_object *args,
void (*callback)(void*, int, struct json_object*), void *callback_closure);
};
/*
* Object that encapsulate accesses to service items
*/
struct afb_service
{
const struct afb_service_itf *itf;
void *closure;
};
#include "afb-service-itf-v1.h"
/**
* Calls the 'verb' of the 'api' with the arguments 'args' and 'verb' in the name of the binding.
* The result of the call is delivered to the 'callback' function with the 'callback_closure'.
*
* The 'callback' receives 3 arguments:
* 1. 'closure' the user defined closure pointer 'callback_closure',
* 2. 'iserror' a boolean status being true (not null) when an error occured,
* 2. 'result' the resulting data as a JSON object.
*
* @param service The service as received during initialisation
* @param api The api name of the method to call
* @param verb The verb name of the method to call
* @param args The arguments to pass to the method
* @param callback The to call on completion
* @param callback_closure The closure to pass to the callback
*
* @returns 0 in case of success or -1 in case of error.
*
* @see also 'afb_req_subcall'
*/
static inline void afb_service_call(
struct afb_service service,
const char *api,
const char *verb,
struct json_object *args,
void (*callback)(void*closure, int iserror, struct json_object *result),
void *callback_closure)
{
service.itf->call(service.closure, api, verb, args, callback, callback_closure);
}
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