diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | src/harvester-apidef.json | 11 | ||||
| -rw-r--r-- | src/harvester.c | 48 | ||||
| -rw-r--r-- | src/plugins/influxdb-reader.c | 125 | ||||
| -rw-r--r-- | src/plugins/influxdb-writer.c | 116 | ||||
| -rw-r--r-- | src/plugins/influxdb.c | 110 | ||||
| -rw-r--r-- | src/plugins/influxdb.h | 27 | ||||
| -rw-r--r-- | src/plugins/tsdb.h | 13 |
8 files changed, 328 insertions, 124 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt index 4217668..c83a11b 100644 --- a/src/CMakeLists.txt +++ b/src/CMakeLists.txt @@ -25,6 +25,8 @@ PROJECT_TARGET_ADD(harvester) ${TARGET_NAME}.c plugins/tsdb.c plugins/influxdb.c + plugins/influxdb-writer.c + plugins/influxdb-reader.c ) set(OPENAPI_DEF "harvester-apidef" CACHE STRING "name and path to the JSON API definition without extension") diff --git a/src/harvester-apidef.json b/src/harvester-apidef.json index 3ae3dee..ff51a38 100644 --- a/src/harvester-apidef.json +++ b/src/harvester-apidef.json @@ -130,7 +130,10 @@ "in": "query", "name": "port", "required": false, - "schema": { "type": "integer" } + "schema": { "oneOf": [ + {"type": "integer"}, + {"type": "string"} + ]} }, { "in": "query", @@ -158,6 +161,12 @@ }, { "in": "query", + "name": "priority", + "required": false, + "schema": { "type": "string" } + }, + { + "in": "query", "name": "identity", "required": false, "schema": { "type": "string" } diff --git a/src/harvester.c b/src/harvester.c index 945f6e1..80bbf37 100644 --- a/src/harvester.c +++ b/src/harvester.c @@ -18,7 +18,6 @@ #define _GNU_SOURCE #include "harvester.h" #include "harvester-apidef.h" -#include <pthread.h> #include "plugins/tsdb.h" #include "curl-wrap.h" @@ -26,41 +25,43 @@ #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; +CURL* (*tsdb_write)(const char* host, const char *port, json_object *metric); +void (*write_curl_cb)(void *closure, int status, CURL *curl, const char *result, size_t size); -int do_write(struct afb_req req, const char* host, int port, json_object *metric) +struct reader_args r_args = {NULL, NULL}; + +int do_write(struct afb_req req, const char* host, const char *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); + curl_wrap_do(curl_request, write_curl_cb, &req); return 0; } void write(struct afb_req req) { - int port = -1; + const char *port = NULL; const char *host = NULL; json_object *req_args = afb_req_json(req), + *portJ = NULL, *metric = NULL; - if(wrap_json_unpack(req_args, "{s?s,s?i,so!}", + if(wrap_json_unpack(req_args, "{s?s,s?o,so!}", "host", &host, - "port", &port, + "port", &portJ, "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 !"); +JSON object or malformed"); + else { + port = json_object_is_type(portJ, json_type_null) ? + NULL : json_object_to_json_string(portJ); + if(do_write(req, host, port, metric)) + afb_req_fail(req, "Failed", "Error processing metric JSON object.\ +Malformed !"); + } } void auth(struct afb_req request) @@ -72,22 +73,21 @@ void auth(struct afb_req request) 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; + write_curl_cb = influxdb_write_curl_cb; + if(influxdb_reader(&r_args) != 0) { + AFB_ERROR("Problem initiating reader timer. Abort"); + return ERROR; + } break; default: AFB_ERROR("No Time Series Database found. Abort"); diff --git a/src/plugins/influxdb-reader.c b/src/plugins/influxdb-reader.c new file mode 100644 index 0000000..bb56c93 --- /dev/null +++ b/src/plugins/influxdb-reader.c @@ -0,0 +1,125 @@ +/* + * 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 <fcntl.h> +#include <stdio.h> +#include <unistd.h> +#include <systemd/sd-event.h> + +#include "influxdb.h" + +CURL *make_curl_query_get(const char *url) +{ + CURL *curl; + char *args[5]; + char *last_ts[30]; + + int fd_last_read = afb_daemon_rootdir_open_locale("last_db_read", O_CREAT, NULL); + if (fd_last_read < 0) + return NULL; + + read(fd_last_read, last_ts, sizeof(last_ts)); + + args[0] = "epoch"; + args[1] = "ns"; + args[2] = "q"; + args[3] = "SELECT * FROM /^.*$/"; + args[4] = NULL; + + curl = curl_wrap_prepare_get(url, NULL, (const char * const*)args); + + return curl; +} + +int unpack_metric_from_db(json_object *metric) +{ + const char *name; + json_object *columns = NULL, *values = NULL; + + wrap_json_unpack(metric, "{ss, so, so!}", + "name", &name, + "columns", &columns, + "values", &values); +} + +int unpack_series(json_object *series) +{ + size_t length_series = json_object_array_length(series); + +} + +void forward_to_garner(const char *result, size_t size) +{ + int id = 0; + + json_object *series = NULL, + *db_dump = json_tokener_parse(result); + wrap_json_unpack(db_dump, "{s[{si,so}]}", + "id", &id, + "series", &series); + + unpack_series(series); + +} + +void influxdb_read_curl_cb(void *closure, int status, CURL *curl, const char *result, size_t size) +{ + long rep_code = curl_wrap_response_code_get(curl); + switch(rep_code) { + case 204: + AFB_DEBUG("Read correctly done"); + forward_to_garner(result, size); + break; + case 400: + AFB_ERROR("Unacceptable request. %s", result); + break; + case 401: + AFB_ERROR("Invalid authentication. %s", result); + break; + default: + AFB_ERROR("Unexptected behavior. %s", result); + break; + } +} + +int influxdb_read(sd_event_source *s, uint64_t usec, void *userdata) +{ + CURL *curl; + struct reader_args *a = NULL; + if(userdata) + a = (struct reader_args*)userdata; + else + return -1; + + char url[URL_MAXIMUM_LENGTH]; /* Safe limit for most popular web browser */ + + make_url(url, sizeof(url), a->host, a->port, "query"); + curl = make_curl_query_get(url); + curl_wrap_do(curl, influxdb_read_curl_cb, NULL); + + return 0; +} + +int influxdb_reader(void *args) +{ + uint64_t usec; + struct sd_event_source *evtSource; + + /* Set a cyclic cb call each 1s to call the read callback */ + sd_event_now(afb_daemon_get_event_loop(), CLOCK_MONOTONIC, &usec); + return sd_event_add_time(afb_daemon_get_event_loop(), &evtSource, CLOCK_MONOTONIC, usec+1000000, 250, influxdb_read, args); +} 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" <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 <stdio.h> +#include <string.h> +#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); +} diff --git a/src/plugins/influxdb.c b/src/plugins/influxdb.c index 17c140d..8a8a112 100644 --- a/src/plugins/influxdb.c +++ b/src/plugins/influxdb.c @@ -16,8 +16,10 @@ */ #define _GNU_SOURCE -#include <string.h> +#include <fcntl.h> #include <stdio.h> +#include <unistd.h> +#include <string.h> #include "tsdb.h" #include "wrap-json.h" @@ -49,36 +51,7 @@ int create_database() 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) +int unpack_metric_from_binding(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, @@ -103,75 +76,20 @@ void concatenate(char* dest, const char* source, const char *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) +size_t make_url(char *url, size_t l_url, const char *host, const char *port, const char *endpoint) { - 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, ×tamp)) { - AFB_ERROR("ERROR unpacking metric. %s", json_object_to_json_string(metric)); - curl = NULL; - } - else { - for(long unsigned 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)); + bzero(url, l_url); /* Handle default host and port */ host = host ? host : DEFAULT_DBHOST; - port = port > 0 ? port : atoi(DEFAULT_DBPORT); + port = port ? port : DEFAULT_DBPORT; strncat(url, host, strlen(host)); - strncat(url, ":"DEFAULT_DBPORT"/write?db="DEFAULT_DB, strlen(":"DEFAULT_DBPORT"/write?db="DEFAULT_DB)); - return make_curl_write_post(url, metric); + strncat(url, ":", 1); + strncat(url, port, strlen(port)); + strncat(url, "/", 1); + strncat(url, endpoint, strlen(endpoint)); + strncat(url, "?db="DEFAULT_DB, strlen("?db="DEFAULT_DB)); + + return strlen(url); } diff --git a/src/plugins/influxdb.h b/src/plugins/influxdb.h new file mode 100644 index 0000000..6c775b7 --- /dev/null +++ b/src/plugins/influxdb.h @@ -0,0 +1,27 @@ +/* + * 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 "wrap-json.h" +#include "tsdb.h" + +int create_database(); + +int unpack_metric_from_binding(json_object *m, const char **name, const char **source, const char **unit, const char **identity, json_object **jv, uint64_t *timestamp); + +void concatenate(char* dest, const char* source, const char *sep); + +size_t make_url(char *url, size_t l_url, const char *host, const char *port, const char *endpoint); diff --git a/src/plugins/tsdb.h b/src/plugins/tsdb.h index 527f538..d7d6c2f 100644 --- a/src/plugins/tsdb.h +++ b/src/plugins/tsdb.h @@ -32,7 +32,14 @@ enum db_available { 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); +struct reader_args { + const char *host; + const char *port; +}; + +CURL *influxdb_write(const char* host, const char *port, json_object *metric); +void influxdb_write_curl_cb(void *closure, int status, CURL *curl, const char *result, size_t size); + +int influxdb_reader(void *args); + int db_ping(); |