1 /**
2 * collectd - src/write_mongodb.c
3 * Copyright (C) 2010-2013 Florian Forster
4 * Copyright (C) 2010 Akkarit Sangpetch
5 * Copyright (C) 2012 Chris Lundquist
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 * Florian Forster <octo at collectd.org>
27 * Akkarit Sangpetch <asangpet at andrew.cmu.edu>
28 * Chris Lundquist <clundquist at bluebox.net>
29 **/
31 #include "collectd.h"
32 #include "plugin.h"
33 #include "common.h"
34 #include "configfile.h"
35 #include "utils_cache.h"
37 #include <pthread.h>
39 #if HAVE_STDINT_H
40 # define MONGO_HAVE_STDINT 1
41 #else
42 # define MONGO_USE_LONG_LONG_INT 1
43 #endif
44 #include <mongo.h>
46 struct wm_node_s
47 {
48 char name[DATA_MAX_NAME_LEN];
50 char *host;
51 int port;
52 int timeout;
54 /* Authentication information */
55 char *db;
56 char *user;
57 char *passwd;
59 _Bool store_rates;
61 mongo conn[1];
62 pthread_mutex_t lock;
63 };
64 typedef struct wm_node_s wm_node_t;
66 /*
67 * Functions
68 */
69 static bson *wm_create_bson (const data_set_t *ds, /* {{{ */
70 const value_list_t *vl,
71 _Bool store_rates)
72 {
73 bson *ret;
74 gauge_t *rates;
75 int i;
77 ret = bson_create ();
78 if (ret == NULL)
79 {
80 ERROR ("write_mongodb plugin: bson_create failed.");
81 return (NULL);
82 }
84 if (store_rates)
85 {
86 rates = uc_get_rate (ds, vl);
87 if (rates == NULL)
88 {
89 ERROR ("write_mongodb plugin: uc_get_rate() failed.");
90 return (NULL);
91 }
92 }
93 else
94 {
95 rates = NULL;
96 }
98 bson_init (ret);
99 bson_append_date (ret, "time", (bson_date_t) CDTIME_T_TO_MS (vl->time));
100 bson_append_string (ret, "host", vl->host);
101 bson_append_string (ret, "plugin", vl->plugin);
102 bson_append_string (ret, "plugin_instance", vl->plugin_instance);
103 bson_append_string (ret, "type", vl->type);
104 bson_append_string (ret, "type_instance", vl->type_instance);
106 bson_append_start_array (ret, "values"); /* {{{ */
107 for (i = 0; i < ds->ds_num; i++)
108 {
109 char key[16];
111 ssnprintf (key, sizeof (key), "%i", i);
113 if (ds->ds[i].type == DS_TYPE_GAUGE)
114 bson_append_double(ret, key, vl->values[i].gauge);
115 else if (store_rates)
116 bson_append_double(ret, key, (double) rates[i]);
117 else if (ds->ds[i].type == DS_TYPE_COUNTER)
118 bson_append_long(ret, key, vl->values[i].counter);
119 else if (ds->ds[i].type == DS_TYPE_DERIVE)
120 bson_append_long(ret, key, vl->values[i].derive);
121 else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
122 bson_append_long(ret, key, vl->values[i].absolute);
123 else
124 assert (23 == 42);
125 }
126 bson_append_finish_array (ret); /* }}} values */
128 bson_append_start_array (ret, "dstypes"); /* {{{ */
129 for (i = 0; i < ds->ds_num; i++)
130 {
131 char key[16];
133 ssnprintf (key, sizeof (key), "%i", i);
135 if (store_rates)
136 bson_append_string (ret, key, "gauge");
137 else
138 bson_append_string (ret, key, DS_TYPE_TO_STRING (ds->ds[i].type));
139 }
140 bson_append_finish_array (ret); /* }}} dstypes */
142 bson_append_start_array (ret, "dsnames"); /* {{{ */
143 for (i = 0; i < ds->ds_num; i++)
144 {
145 char key[16];
147 ssnprintf (key, sizeof (key), "%i", i);
148 bson_append_string (ret, key, ds->ds[i].name);
149 }
150 bson_append_finish_array (ret); /* }}} dsnames */
152 bson_finish (ret);
154 sfree (rates);
155 return (ret);
156 } /* }}} bson *wm_create_bson */
158 static int wm_write (const data_set_t *ds, /* {{{ */
159 const value_list_t *vl,
160 user_data_t *ud)
161 {
162 wm_node_t *node = ud->data;
163 char collection_name[512];
164 bson *bson_record;
165 int status;
167 ssnprintf (collection_name, sizeof (collection_name), "collectd.%s",
168 vl->plugin);
170 bson_record = wm_create_bson (ds, vl, node->store_rates);
171 if (bson_record == NULL)
172 return (ENOMEM);
174 pthread_mutex_lock (&node->lock);
176 if (!mongo_is_connected (node->conn))
177 {
178 INFO ("write_mongodb plugin: Connecting to [%s]:%i",
179 (node->host != NULL) ? node->host : "localhost",
180 (node->port != 0) ? node->port : MONGO_DEFAULT_PORT);
181 status = mongo_connect (node->conn, node->host, node->port);
182 if (status != MONGO_OK) {
183 ERROR ("write_mongodb plugin: Connecting to [%s]:%i failed.",
184 (node->host != NULL) ? node->host : "localhost",
185 (node->port != 0) ? node->port : MONGO_DEFAULT_PORT);
186 mongo_destroy (node->conn);
187 pthread_mutex_unlock (&node->lock);
188 return (-1);
189 }
191 if ((node->db != NULL) && (node->user != NULL) && (node->passwd != NULL))
192 {
193 status = mongo_cmd_authenticate (node->conn,
194 node->db, node->user, node->passwd);
195 if (status != MONGO_OK)
196 {
197 ERROR ("write_mongodb plugin: Authenticating to [%s]%i for database "
198 "\"%s\" as user \"%s\" failed.",
199 (node->host != NULL) ? node->host : "localhost",
200 (node->port != 0) ? node->port : MONGO_DEFAULT_PORT,
201 node->db, node->user);
202 mongo_destroy (node->conn);
203 pthread_mutex_unlock (&node->lock);
204 return (-1);
205 }
206 }
208 if (node->timeout > 0) {
209 status = mongo_set_op_timeout (node->conn, node->timeout);
210 if (status != MONGO_OK) {
211 WARNING ("write_mongodb plugin: mongo_set_op_timeout(%i) failed: %s",
212 node->timeout, node->conn->errstr);
213 }
214 }
215 }
217 /* Assert if the connection has been established */
218 assert (mongo_is_connected (node->conn));
220 #if MONGO_MINOR >= 6
221 /* There was an API change in 0.6.0 as linked below */
222 /* https://github.com/mongodb/mongo-c-driver/blob/master/HISTORY.md */
223 status = mongo_insert (node->conn, collection_name, bson_record, NULL);
224 #else
225 status = mongo_insert (node->conn, collection_name, bson_record);
226 #endif
228 if (status != MONGO_OK)
229 {
230 ERROR ( "write_mongodb plugin: error inserting record: %d", node->conn->err);
231 if (node->conn->err != MONGO_BSON_INVALID)
232 ERROR ("write_mongodb plugin: %s", node->conn->errstr);
233 else
234 ERROR ("write_mongodb plugin: Invalid BSON structure, error = %#x",
235 (unsigned int) bson_record->err);
237 /* Disconnect except on data errors. */
238 if ((node->conn->err != MONGO_BSON_INVALID)
239 && (node->conn->err != MONGO_BSON_NOT_FINISHED))
240 mongo_destroy (node->conn);
241 }
243 pthread_mutex_unlock (&node->lock);
245 /* free our resource as not to leak memory */
246 bson_dispose (bson_record);
248 return (0);
249 } /* }}} int wm_write */
251 static void wm_config_free (void *ptr) /* {{{ */
252 {
253 wm_node_t *node = ptr;
255 if (node == NULL)
256 return;
258 if (mongo_is_connected (node->conn))
259 mongo_destroy (node->conn);
261 sfree (node->host);
262 sfree (node);
263 } /* }}} void wm_config_free */
265 static int wm_config_node (oconfig_item_t *ci) /* {{{ */
266 {
267 wm_node_t *node;
268 int status;
269 int i;
271 node = malloc (sizeof (*node));
272 if (node == NULL)
273 return (ENOMEM);
274 memset (node, 0, sizeof (*node));
275 mongo_init (node->conn);
276 node->host = NULL;
277 node->store_rates = 1;
278 pthread_mutex_init (&node->lock, /* attr = */ NULL);
280 status = cf_util_get_string_buffer (ci, node->name, sizeof (node->name));
282 if (status != 0)
283 {
284 sfree (node);
285 return (status);
286 }
288 for (i = 0; i < ci->children_num; i++)
289 {
290 oconfig_item_t *child = ci->children + i;
292 if (strcasecmp ("Host", child->key) == 0)
293 status = cf_util_get_string (child, &node->host);
294 else if (strcasecmp ("Port", child->key) == 0)
295 {
296 status = cf_util_get_port_number (child);
297 if (status > 0)
298 {
299 node->port = status;
300 status = 0;
301 }
302 }
303 else if (strcasecmp ("Timeout", child->key) == 0)
304 status = cf_util_get_int (child, &node->timeout);
305 else if (strcasecmp ("StoreRates", child->key) == 0)
306 status = cf_util_get_boolean (child, &node->store_rates);
307 else if (strcasecmp ("Database", child->key) == 0)
308 status = cf_util_get_string (child, &node->db);
309 else if (strcasecmp ("User", child->key) == 0)
310 status = cf_util_get_string (child, &node->user);
311 else if (strcasecmp ("Password", child->key) == 0)
312 status = cf_util_get_string (child, &node->passwd);
313 else
314 WARNING ("write_mongodb plugin: Ignoring unknown config option \"%s\".",
315 child->key);
317 if (status != 0)
318 break;
319 } /* for (i = 0; i < ci->children_num; i++) */
321 if ((node->db != NULL) || (node->user != NULL) || (node->passwd != NULL))
322 {
323 if ((node->db == NULL) || (node->user == NULL) || (node->passwd == NULL))
324 {
325 WARNING ("write_mongodb plugin: Authentication requires the "
326 "\"Database\", \"User\" and \"Password\" options to be specified, "
327 "but at last one of them is missing. Authentication will NOT be "
328 "used.");
329 sfree (node->db);
330 sfree (node->user);
331 sfree (node->passwd);
332 }
333 }
335 if (status == 0)
336 {
337 char cb_name[DATA_MAX_NAME_LEN];
338 user_data_t ud;
340 ssnprintf (cb_name, sizeof (cb_name), "write_mongodb/%s", node->name);
342 ud.data = node;
343 ud.free_func = wm_config_free;
345 status = plugin_register_write (cb_name, wm_write, &ud);
346 INFO ("write_mongodb plugin: registered write plugin %s %d",cb_name,status);
347 }
349 if (status != 0)
350 wm_config_free (node);
352 return (status);
353 } /* }}} int wm_config_node */
355 static int wm_config (oconfig_item_t *ci) /* {{{ */
356 {
357 int i;
359 for (i = 0; i < ci->children_num; i++)
360 {
361 oconfig_item_t *child = ci->children + i;
363 if (strcasecmp ("Node", child->key) == 0)
364 wm_config_node (child);
365 else
366 WARNING ("write_mongodb plugin: Ignoring unknown "
367 "configuration option \"%s\" at top level.", child->key);
368 }
370 return (0);
371 } /* }}} int wm_config */
373 void module_register (void)
374 {
375 plugin_register_complex_config ("write_mongodb", wm_config);
376 }
378 /* vim: set sw=2 sts=2 tw=78 et fdm=marker : */