aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/influxdb.c
blob: 27161abd0519bedc25b2fb6eb5b75ef018c8e323 (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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
 * Copyright (C) 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 <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>

#include "influxdb.h"
#include "tsdb.h"
#include "wrap-json.h"
#include "../utils/list.h"

void concatenate(char* dest, const char* source, const char *sep)
{
	strncat(dest, sep, strlen(sep));
	strncat(dest, source, strlen(source));
}

size_t make_url(char *url, size_t l_url, const char *host, const char *port, const char *endpoint)
{
	bzero(url, l_url);

	/* Handle default host and port */
	host = host ? host : DEFAULT_DBHOST;
	port = port ? port : DEFAULT_DBPORT;

	strncat(url, host, strlen(host));
	strncat(url, ":", 1);
	strncat(url, port, strlen(port));
	strncat(url, "/", 1);
	strncat(url, endpoint, strlen(endpoint));
	strncat(url, "?db="DEFAULT_DB, strlen("?db="DEFAULT_DB));

	return strlen(url);
}


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_unescaped("localhost:"DEFAULT_DBPORT"/query",NULL, " ", post_data);
	curl_wrap_perform(request, &result, &result_size);

	if(curl_wrap_response_code_get(request) != 200) {
		AFB_ERROR("Can't create database.");
		ret = ERROR;
	}

	curl_easy_cleanup(request);

	if(ret == 0)
		AFB_NOTICE("Database '"DEFAULT_DB"' created");

	return ret;
}

void unpack_values(void *l, json_object *valuesJ, const char *key)
{
	struct list **oneList = (struct list **)l;

	/* Append a suffix to be able to differentiate tags and fields at reading
	   time */
	char *suffixed_key = calloc(1, strlen(key) + 3);
	strcpy(suffixed_key, key);
	strcat(suffixed_key, "_f");

	add_elt(oneList, suffixed_key, valuesJ);
}

void unpack_metadata(void *l, json_object *valuesJ, const char *key)
{
	struct list **oneList = (struct list **)l;

	/* Append a suffix to be able to differentiate tags and fields at reading
	   time */
	char *suffixed_key = calloc(1, strlen(key) +3);
	strcat(suffixed_key, key);
	strcat(suffixed_key, "_t");

	add_elt(oneList, suffixed_key, valuesJ);
}

void unpacking_from_api(void *s, json_object *valueJ, const char *key)
{
	size_t key_length = strlen(key);
	struct series_t *serie = (struct series_t*)s;

	/* Treat the 2 static key that could have been specified */
	if(strcasecmp("name", key) == 0)
		serie->name = json_object_get_string(valueJ);
	else if(strcasecmp("timestamp", key) == 0)
		serie->timestamp = get_ts();
	else if(strcasecmp("metadata", key) == 0)
		wrap_json_object_for_all(valueJ, unpack_metadata, (void*)&serie->serie_columns.tags);
	else if(strcasecmp("value", key) == 0 || strcasecmp("values", key) == 0)
		wrap_json_object_for_all(valueJ, unpack_values, (void*)&serie->serie_columns.fields);
	/* Treat all key looking for tag and field object. Those ones could be find
	   with the last 2 character. '_t' for tag and '_f' that are the keys that
	   could be indefinite. Cf influxdb documentation:
	   https://docs.influxdata.com/influxdb/v1.5/write_protocols/line_protocol_reference/ */
	else if(strncasecmp(&key[key_length-2], "_t", 2) == 0)
		add_elt(&serie->serie_columns.tags, key, valueJ);
	else if(strncasecmp(&key[key_length-2], "_f", 2) == 0)
		add_elt(&serie->serie_columns.fields, key, valueJ);
}

int unpack_metric_from_api(json_object *m, struct series_t *serie)
{
	wrap_json_object_for_all(m, unpacking_from_api, serie);

	if(!serie->timestamp)
		serie->timestamp = get_ts();

	return 0;
}