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-rw-r--r--src/harvester.c187
-rw-r--r--src/harvester.h2
-rw-r--r--src/plugins/influxdb.c173
-rw-r--r--src/plugins/tsdb.c43
-rw-r--r--src/plugins/tsdb.h30
5 files changed, 270 insertions, 165 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, &timestamp)) {
- 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;
diff --git a/src/harvester.h b/src/harvester.h
index e67145c..224ec71 100644
--- a/src/harvester.h
+++ b/src/harvester.h
@@ -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");
diff --git a/src/plugins/influxdb.c b/src/plugins/influxdb.c
new file mode 100644
index 0000000..74c1297
--- /dev/null
+++ b/src/plugins/influxdb.c
@@ -0,0 +1,173 @@
+/*
+ * 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.
+ */
+
+#include "tsdb.h"
+
+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("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_easy_cleanup(request);
+ free(post_data);
+
+ if(ret == 0)
+ AFB_NOTICE("Database 'agl-collector' created");
+
+ return ret;
+}
+
+void influxdb_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 *format_write_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;
+
+ 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 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, &timestamp)) {
+ AFB_ERROR("ERROR unpacking metric. %s", json_object_to_json_string(metric));
+ curl = NULL;
+ }
+ else {
+ for(int i = lpd; i != 0; i--) {
+ format_write_query(query, name, source, unit, identity, jv, timestamp);
+ post_data[i] = i == lpd ? NULL : query;
+ }
+ curl = curl_wrap_prepare_post(url, NULL, 1, (const char * const*)post_data);
+ }
+
+ return curl;
+}
+
+CURL *influxdb_write(const char* host, int port, json_object *metric)
+{
+ 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);
+}
diff --git a/src/plugins/tsdb.c b/src/plugins/tsdb.c
new file mode 100644
index 0000000..20a3e89
--- /dev/null
+++ b/src/plugins/tsdb.c
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+
+#include "tsdb.h"
+
+int db_ping()
+{
+ int ret = 0;
+ if(influxdb_ping() == 0) ret = INFLUX;
+
+ return ret;
+}
+
+int influxdb_ping()
+{
+ 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;
+}
diff --git a/src/plugins/tsdb.h b/src/plugins/tsdb.h
new file mode 100644
index 0000000..967bce0
--- /dev/null
+++ b/src/plugins/tsdb.h
@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+#include <json-c/json.h>
+#include "curl-wrap.h"
+
+enum db_available {
+ INFLUX = 1,
+ GRAPHITE = 2,
+ OPENTSDB = 4
+};
+
+CURL *influxdb_write(const char* host, int port, json_object *metric);
+CURL *influxdb_read(const char* host, int port, json_object *query);
+void influxdb_cb(void *closure, int status, CURL *curl, const char *result, size_t size);
+int db_ping();