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
|
/*
* Copyright (C) 2016-2019 "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.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <json-c/json.h>
#define AFB_BINDING_VERSION 3
#include <afb/afb-binding.h>
#include <afb-timer.h>
static afb_event_t event;
static TimerHandleT *timer;
static void timerCount()
{
static int timerCount = 0;
int listeners = 0;
if(afb_event_is_valid(event))
listeners = afb_event_push(event, json_object_new_int(timerCount));
timerCount++;
}
static void startTimer(afb_req_t request)
{
char *timeruid;
timer = (TimerHandleT*)calloc (1, sizeof(TimerHandleT));
timer->delay = (uint) 1000;
timer->count = -1; // run forever
timer->uid = timeruid;
TimerEvtStart(request->api, timer, timerCount, NULL);
afb_req_success(request, NULL, "startTimer");
AFB_REQ_NOTICE(request, "Invoked at startTimer");
}
static void subscribeSample(afb_req_t request)
{
// Event not valid ? then creating one.
if(! afb_event_is_valid(event))
event = afb_api_make_event(request->api, "timerCount");
if(afb_req_subscribe(request, event) < 0) {
afb_req_fail(request, "Error", "Subscription operation failed");
return;
}
afb_req_success(request, NULL, "subscribeSample");
AFB_REQ_NOTICE(request, "Invoked at subscribe invocation");
}
static void unsubscribeSample(afb_req_t request)
{
if(! afb_event_is_valid(event)) {
afb_req_fail(request, "Invalid", "Event not valid");
return;
}
if(afb_req_unsubscribe(request, event) < 0) {
afb_req_fail(request, "Error", "Unsubscription operation failed");
return;
}
afb_req_success(request, NULL, NULL);
AFB_REQ_NOTICE(request, "Invoked at unsubscribe invocation");
}
static const afb_verb_t verbs[] = {
/*Without security*/
{.verb = "startTimer", .session = AFB_SESSION_NONE, .callback = startTimer, .auth = NULL},
{.verb = "subscribe", .session = AFB_SESSION_NONE, .callback = subscribeSample, .auth = NULL},
{.verb = "unsubscribe", .session = AFB_SESSION_NONE, .callback = unsubscribeSample, .auth = NULL},
{NULL}
};
const afb_binding_t afbBindingExport = {
.api = "helloworld-event",
.specification = NULL,
.verbs = verbs,
.preinit = NULL,
.init = NULL,
.onevent = NULL,
.userdata = NULL,
.provide_class = NULL,
.require_class = NULL,
.require_api = NULL,
.noconcurrency = 0
};
|
