From 2eab98674426d4287b9a9f4d34ab7b5ced5cfdc9 Mon Sep 17 00:00:00 2001 From: Romain Forlot Date: Tue, 10 Apr 2018 18:09:02 +0200 Subject: Splitting code source, cleaning. Change-Id: I97c2a409d05ceb9babb23c23fbf818316d01419b Signed-off-by: Romain Forlot --- src/plugins/influxdb-writer.c | 116 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 src/plugins/influxdb-writer.c (limited to 'src/plugins/influxdb-writer.c') diff --git a/src/plugins/influxdb-writer.c b/src/plugins/influxdb-writer.c new file mode 100644 index 0000000..3c46b57 --- /dev/null +++ b/src/plugins/influxdb-writer.c @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2015, 2016, 2017, 2018 "IoT.bzh" + * Author "Romain Forlot" + * + * 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 +#include +#include "influxdb.h" + +size_t format_write_args(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 strlen(query); +} + +CURL *make_curl_write_post(const char *url, json_object *metric) +{ + CURL *curl; + json_object *jv = NULL; + uint64_t timestamp = 0; + 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 write[URL_MAXIMUM_LENGTH]; + bzero(write, URL_MAXIMUM_LENGTH); + + if(unpack_metric_from_binding(metric, &name, &source, &unit, &identity, &jv, ×tamp)) { + AFB_ERROR("ERROR unpacking metric. %s", json_object_to_json_string(metric)); + curl = NULL; + } + else { + for(long int i = --lpd; i >= 0; i--) { + format_write_args(write, name, source, unit, identity, jv, timestamp); + post_data[i] = i == lpd ? NULL : write; + } + curl = curl_wrap_prepare_post(url, NULL, 1, (const char * const*)post_data); + } + free(post_data); + + return curl; +} + +void influxdb_write_curl_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; + } +} + +CURL *influxdb_write(const char* host, const char *port, json_object *metric) +{ + char url[URL_MAXIMUM_LENGTH]; /* Safe limit for most popular web browser */ + make_url(url, sizeof(url), host, port, "write"); + return make_curl_write_post(url, metric); +} -- cgit 1.2.3-korg