diff options
Diffstat (limited to 'src/harvester.c')
| -rw-r--r-- | src/harvester.c | 187 |
1 files changed, 23 insertions, 164 deletions
diff --git a/src/harvester.c b/src/harvester.c index c3c1bc0..63e5a6f 100644 --- a/src/harvester.c +++ b/src/harvester.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2015, 2016 "IoT.bzh" + * 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"); @@ -21,179 +21,25 @@ #include <string.h> #include <stdio.h> +#include "plugins/tsdb.h" #include "curl-wrap.h" #include "wrap-json.h" -#define DEFAULT_DB "agl-collector" +#define DEFAULT_DB "agl-garner" #define DEFAULT_DBHOST "localhost" #define DEFAULT_DBPORT "8086" #define URL_MAXIMUM_LENGTH 2047 -int dbping() -{ - int ret = 0; - char *result; - size_t result_size; - CURL *request = curl_wrap_prepare_get("localhost:"DEFAULT_DBPORT"/ping",NULL, NULL); - curl_wrap_perform(request, &result, &result_size); - - if(curl_wrap_response_code_get(request) != 204) { - AFB_ERROR("TimeSeries DB not reachable"); - ret = -1; - } - - curl_easy_cleanup(request); - return ret; -} - -int create_database() -{ - int ret = 0; - char *result; - size_t result_size; - - // Declare query to be posted - const char **post_data; - post_data = malloc(sizeof(*post_data)); - 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* (*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); - curl_easy_cleanup(request); - free(post_data); - - if(ret == 0) - AFB_NOTICE("Database 'agl-collector' created"); - - return ret; -} - -void 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; - } -} - -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 *make_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; - - char *post_data[2], 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 { - make_query(query, name, source, unit, identity, jv, timestamp); - post_data[0] = query; - post_data[1] = NULL; - curl = curl_wrap_prepare_post(url, NULL, 1, (const char * const*)post_data); - } - - return curl; -} int do_write(struct afb_req req, const char* host, int port, json_object *metric) { CURL *curl_request; - 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)); - curl_request = make_curl_write_post(url, metric); + curl_request = tsdb_write(host, port, metric); curl_wrap_do(curl_request, curl_cb, &req); return 0; @@ -226,12 +72,25 @@ void auth(struct afb_req request) int init() { - int err = 0; + /* Ok 2 int is no needed, 1 is enough but 2 is more lisible. */ + int db_up = 0, err = 0; err = curl_global_init(CURL_GLOBAL_DEFAULT); + if (!err) - err = dbping(); - else { + db_up = db_ping(); + else AFB_ERROR("Something went wrong initiliazing libcurl. Abort"); + + switch (db_up) { + case INFLUX: + tsdb_write = influxdb_write; + tsdb_read = influxdb_read; + curl_cb = influxdb_cb; + break; + default: + AFB_ERROR("No Time Series Database found. Abort"); + err = -1; + break; } return err; |