aboutsummaryrefslogtreecommitdiffstats
path: root/include/afb/afb-binding.h
blob: 950cd898a8995d71033a4e5f02525b0c09b16d46 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
/*
 * Copyright (C) 2015-2020 "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

/**
 * @mainpage
 *
 * @section brief Brief introduction
 *
 * This is part of the AGL framework micro-service binder and is provided as the
 * API for writing bindings.
 *
 * The normal usage is to include only one file as below:
 *
 * ```C
 * #define AFB_BINDING_VERSION 3
 * #include <afb/afb-binding.h>
 * ```
 *
 * @example tuto-1.c
 * @example tuto-2.c
 */
/**
 * @file afb/afb-binding.h
 */

#include <stdarg.h>
#include <stdint.h>
#include <json-c/json.h>

/**
 * @def AFB_BINDING_INTERFACE_VERSION

 *  * Version of the binding interface.
 *
 * This is intended to be test for tuning condition code.
 * It is of the form MAJOR * 1000 + REVISION.
 *
 * @see AFB_BINDING_UPPER_VERSION that should match MAJOR
 */
#define AFB_BINDING_INTERFACE_VERSION 3000

/**
 * @def AFB_BINDING_LOWER_VERSION
 *
 * Lowest binding API version supported.
 *
 * @see AFB_BINDING_VERSION
 * @see AFB_BINDING_UPPER_VERSION
 */
#define AFB_BINDING_LOWER_VERSION     1

/**
 * @def AFB_BINDING_UPPER_VERSION
 *
 * Upper binding API version supported.
 *
 * @see AFB_BINDING_VERSION
 * @see AFB_BINDING_LOWER_VERSION
 */
#define AFB_BINDING_UPPER_VERSION     3

/**
 * @def AFB_BINDING_VERSION
 *
 * This macro must be defined before including <afb/afb-binding.h> to set
 * the required binding API.
 */

#ifndef AFB_BINDING_VERSION
#error "\
\n\
\n\
  AFB_BINDING_VERSION should be defined before including <afb/afb-binding.h>\n\
  AFB_BINDING_VERSION defines the version of binding that you use.\n\
  Currently the version to use is 3 (older versions: 1 is obsolete, 2 is legacy).\n\
  Consider to add one of the following define before including <afb/afb-binding.h>:\n\
\n\
    #define AFB_BINDING_VERSION 3\n\
\n\
"
#else
#  if AFB_BINDING_VERSION == 1
#    warning "Using binding version 1, consider to switch to version 3"
#  endif
#  if AFB_BINDING_VERSION == 2
#    warning "Using binding version 2, consider to switch to version 3"
#  endif
#endif

#if AFB_BINDING_VERSION != 0
# if AFB_BINDING_VERSION < AFB_BINDING_LOWER_VERSION || AFB_BINDING_VERSION > AFB_BINDING_UPPER_VERSION
#  error "Unsupported binding version AFB_BINDING_VERSION"
# endif
#endif

/***************************************************************************************************/
#include "afb-binding-predefs.h"
#include "afb-binding-v1.h"
#include "afb-binding-v2.h"
#include "afb-binding-v3.h"
#if defined(AFB_BINDING_WANT_DYNAPI)
#  include "afb-dynapi-legacy.h"
#endif
#include "afb-binding-postdefs.h"