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/*
* 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 "harvester.h"
#include "harvester-apidef.h"
#include <pthread.h>
#include "plugins/tsdb.h"
#include "curl-wrap.h"
#include "wrap-json.h"
#define ERROR -1
CURL* (*tsdb_write)(const char* host, int port, json_object *metric);
CURL* (*tsdb_read)(const char* host, int port, json_object *metric);
void (*curl_cb)(void *closure, int status, CURL *curl, const char *result, size_t size);
pthread_mutex_t db_mutex;
int do_write(struct afb_req req, const char* host, int port, json_object *metric)
{
CURL *curl_request;
curl_request = tsdb_write(host, port, metric);
pthread_mutex_lock(&db_mutex);
curl_wrap_do(curl_request, curl_cb, &req);
pthread_mutex_unlock(&db_mutex);
return 0;
}
void write(struct afb_req req)
{
int port = -1;
const char *host = NULL;
json_object *req_args = afb_req_json(req),
*metric = NULL;
if(wrap_json_unpack(req_args, "{s?s,s?i,so!}",
"host", &host,
"port", &port,
"metric", &metric) || ! metric)
afb_req_fail(req, "Failed", "Error processing arguments. Miss metric\
JSON object or malformed");
else if(do_write(req, host, port, metric))
afb_req_fail(req, "Failed", "Error processing metric JSON object.\
Malformed !");
}
void auth(struct afb_req request)
{
afb_req_session_set_LOA(request, 1);
afb_req_success(request, NULL, NULL);
}
int init()
{
int tsdb_available = 0;
if(curl_global_init(CURL_GLOBAL_DEFAULT) != 0) {
AFB_ERROR("Something went wrong initiliazing libcurl. Abort");
return ERROR;
}
if(pthread_mutex_init(&db_mutex, NULL) != 0) {
AFB_ERROR("Something went wrong initiliazing mutex. Abort");
return ERROR;
}
tsdb_available = db_ping();
switch (tsdb_available) {
case INFLUX:
tsdb_write = influxdb_write;
tsdb_read = influxdb_read;
curl_cb = influxdb_cb;
break;
default:
AFB_ERROR("No Time Series Database found. Abort");
return ERROR;
break;
}
return 0;
}
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