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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* Copyright (C) 2015, 2016, 2017, 2018 "IoT.bzh"
* Author "Romain Forlot" <romain.forlot@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 <string.h>
#include <stdio.h>
#include "tsdb.h"
#include "wrap-json.h"
int create_database()
{
int ret = 0;
char *result;
size_t result_size;
// Declare query to be posted
const char *post_data[2];
post_data[0] = "q=CREATE DATABASE \""DEFAULT_DB"\"";
post_data[1] = NULL;
CURL *request = curl_wrap_prepare_post("localhost:"DEFAULT_DBPORT"/query",NULL, 1, post_data);
curl_wrap_perform(request, &result, &result_size);
if(curl_wrap_response_code_get(request) != 200) {
AFB_ERROR("Can't create database.");
ret = -1;
}
curl_easy_cleanup(request);
if(ret == 0)
AFB_NOTICE("Database 'agl-collector' created");
return ret;
}
void influxdb_cb(void *closure, int status, CURL *curl, const char *result, size_t size)
{
struct afb_req *req = (struct afb_req*)closure;
long rep_code = curl_wrap_response_code_get(curl);
switch(rep_code) {
case 204:
AFB_DEBUG("Request correctly written");
afb_req_success(*req, NULL, "Request has been successfully writen");
break;
case 400:
afb_req_fail(*req, "Bad request", result);
break;
case 401:
afb_req_fail(*req, "Unauthorized access", result);
break;
case 404:
afb_req_fail(*req, "Not found", result);
AFB_NOTICE("Attempt to create the DB '"DEFAULT_DB"'");
create_database();
break;
case 500:
afb_req_fail_f(*req, "Timeout", "Overloaded server: %s", result);
break;
default:
afb_req_fail(*req, "Failure", "Unexpected behavior.");
break;
}
}
int unpack_metric(json_object *m, const char **name, const char **source, const char **unit, const char **identity, json_object **jv, uint64_t *timestamp)
{
if (wrap_json_unpack(m, "{ss,s?s,s?s,s?s,so,sI!}",
"name", name,
"source", source,
"unit", unit,
"identity", identity,
"value", jv,
"timestamp", timestamp))
return -1;
else if (!json_object_is_type(*jv, json_type_boolean) &&
!json_object_is_type(*jv, json_type_double) &&
!json_object_is_type(*jv, json_type_int) &&
!json_object_is_type(*jv, json_type_string))
return -1;
return 0;
}
void concatenate(char* dest, const char* source, const char *sep)
{
strncat(dest, sep, strlen(sep));
strncat(dest, source, strlen(source));
}
char *format_write_query(char *query, const char *name, const char *source, const char *unit, const char *identity, json_object *jv, uint64_t timestamp)
{
char *ts;
memset(query, 0, URL_MAXIMUM_LENGTH);
strncat(query, name, strlen(name));
if (source) {
concatenate(query, source, ",");
}
if (unit) {
concatenate(query, unit, ",");
}
if (identity) {
concatenate(query, identity, ",");
}
concatenate(query, "value", " ");
concatenate(query, json_object_to_json_string(jv), "=");
asprintf(&ts, "%lu", timestamp);
concatenate(query, ts, " ");
return query;
}
CURL *make_curl_write_post(const char *url, struct json_object *metric)
{
CURL *curl;
const char *name = NULL,
*source = NULL,
*unit = NULL,
*identity = NULL;
size_t lpd = json_object_is_type(metric, json_type_array) ?
json_object_array_length(metric) + 1 : 2;
char **post_data;
post_data = malloc(lpd);
char query[URL_MAXIMUM_LENGTH];
bzero(query, URL_MAXIMUM_LENGTH);
json_object *jv = NULL;
uint64_t timestamp = 0;
if(unpack_metric(metric, &name, &source, &unit, &identity, &jv, ×tamp)) {
AFB_ERROR("ERROR unpacking metric. %s", json_object_to_json_string(metric));
curl = NULL;
}
else {
for(long unsigned int i = lpd; i != 0; i--) {
format_write_query(query, name, source, unit, identity, jv, timestamp);
post_data[i] = i == lpd ? NULL : query;
}
curl = curl_wrap_prepare_post(url, NULL, 1, (const char * const*)post_data);
}
return curl;
}
CURL *influxdb_write(const char* host, int port, json_object *metric)
{
char url[URL_MAXIMUM_LENGTH]; /* Safe limit for most popular web browser */
memset(url, 0, sizeof(url));
/* Handle default host and port */
host = host ? host : DEFAULT_DBHOST;
port = port > 0 ? port : atoi(DEFAULT_DBPORT);
strncat(url, host, strlen(host));
strncat(url, ":"DEFAULT_DBPORT"/write?db="DEFAULT_DB, strlen(":"DEFAULT_DBPORT"/write?db="DEFAULT_DB));
return make_curl_write_post(url, metric);
}
|
