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/*
* 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.
*/
#ifndef _INFLUXDB_H_
#define _INFLUXDB_H_
#define _GNU_SOURCE
#include <string.h>
#include <stdbool.h>
#include "../utils/list.h"
#include "ctl-plugin.h"
#include "tsdb.h"
#include "wrap-json.h"
struct serie_columns_t {
struct list* tags;
struct list* fields;
};
struct series_t {
const char* name;
struct serie_columns_t serie_columns;
uint64_t timestamp;
};
int create_database(afb_req_t request);
int unpack_metric_from_api(json_object* m, struct series_t* serie);
static inline int should_escape(char c, bool quoteOnly)
{
if (quoteOnly) {
return (c == '"');
} else {
switch (c) {
case ',':
case '=':
case ' ':
case '"':
return 1;
break;
}
}
return 0;
}
/*
Escape special characters according to influxDB doc
https://docs.influxdata.com/influxdb/v1.5/write_protocols/line_protocol_reference/#special-characters
*/
static inline char* escape_chr(const char* src, bool quoteOnly)
{
int j = 0, i = 0;
size_t len, src_len;
char* res;
len = src_len = strlen(src);
while (i < src_len) {
if (should_escape(src[i++], quoteOnly))
len++;
}
if (len == src_len) {
res = strdup(src);
} else {
res = malloc(len + 1);
if (res) {
i = j = 0;
while (i < src_len) {
if (src[i] == '\\') {
i++;
continue;
}
if (should_escape(src[i], quoteOnly))
res[j++] = '\\';
res[j++] = src[i++];
}
}
res[j] = '\0';
}
return res;
}
static inline void concatenate(char* dest, const char* source, const char* sep)
{
char* esc_source;
if (sep)
strncat(dest, sep, strlen(sep));
esc_source = escape_chr(source, FALSE);
strncat(dest, esc_source, strlen(esc_source));
if (esc_source)
free(esc_source);
}
static inline void concatenate_str(char* dest, const char* source, const char* sep)
{
char* esc_source;
if (sep)
strncat(dest, sep, strlen(sep));
strncat(dest, "\"", 1);
esc_source = escape_chr(source, TRUE);
strncat(dest, esc_source, strlen(esc_source));
if (esc_source)
free(esc_source);
strncat(dest, "\"", 1);
}
size_t make_url(char* url, size_t l_url, const char* host, const char* port, const char* endpoint);
#endif
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