1 /**
2 * collectd - src/write_http.c
3 * Copyright (C) 2009 Paul Sadauskas
4 * Copyright (C) 2009 Doug MacEachern
5 * Copyright (C) 2007-2014 Florian octo Forster
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; only version 2 of the License is applicable.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 * Authors:
21 * Florian octo Forster <octo at collectd.org>
22 * Doug MacEachern <dougm@hyperic.com>
23 * Paul Sadauskas <psadauskas@gmail.com>
24 **/
26 #include "collectd.h"
27 #include "plugin.h"
28 #include "common.h"
29 #include "utils_format_json.h"
31 #include <curl/curl.h>
33 #ifndef WRITE_HTTP_DEFAULT_BUFFER_SIZE
34 # define WRITE_HTTP_DEFAULT_BUFFER_SIZE 4096
35 #endif
37 /*
38 * Private variables
39 */
40 struct wh_callback_s
41 {
42 char *name;
44 char *location;
45 char *user;
46 char *pass;
47 char *credentials;
48 _Bool verify_peer;
49 _Bool verify_host;
50 char *cacert;
51 char *capath;
52 char *clientkey;
53 char *clientcert;
54 char *clientkeypass;
55 long sslversion;
56 _Bool store_rates;
57 _Bool log_http_error;
58 int low_speed_limit;
59 time_t low_speed_time;
60 int timeout;
62 #define WH_FORMAT_COMMAND 0
63 #define WH_FORMAT_JSON 1
64 int format;
66 CURL *curl;
67 struct curl_slist *headers;
68 char curl_errbuf[CURL_ERROR_SIZE];
70 char *send_buffer;
71 size_t send_buffer_size;
72 size_t send_buffer_free;
73 size_t send_buffer_fill;
74 cdtime_t send_buffer_init_time;
76 pthread_mutex_t send_lock;
77 };
78 typedef struct wh_callback_s wh_callback_t;
80 static void wh_log_http_error (wh_callback_t *cb)
81 {
82 if (!cb->log_http_error)
83 return;
85 long http_code = 0;
87 curl_easy_getinfo (cb->curl, CURLINFO_RESPONSE_CODE, &http_code);
89 if (http_code != 200)
90 INFO ("write_http plugin: HTTP Error code: %lu", http_code);
91 }
93 static void wh_reset_buffer (wh_callback_t *cb) /* {{{ */
94 {
95 memset (cb->send_buffer, 0, cb->send_buffer_size);
96 cb->send_buffer_free = cb->send_buffer_size;
97 cb->send_buffer_fill = 0;
98 cb->send_buffer_init_time = cdtime ();
100 if (cb->format == WH_FORMAT_JSON)
101 {
102 format_json_initialize (cb->send_buffer,
103 &cb->send_buffer_fill,
104 &cb->send_buffer_free);
105 }
106 } /* }}} wh_reset_buffer */
108 static int wh_send_buffer (wh_callback_t *cb) /* {{{ */
109 {
110 int status = 0;
112 curl_easy_setopt (cb->curl, CURLOPT_POSTFIELDS, cb->send_buffer);
113 status = curl_easy_perform (cb->curl);
115 wh_log_http_error (cb);
117 if (status != CURLE_OK)
118 {
119 ERROR ("write_http plugin: curl_easy_perform failed with "
120 "status %i: %s",
121 status, cb->curl_errbuf);
122 }
123 return (status);
124 } /* }}} wh_send_buffer */
126 static int wh_callback_init (wh_callback_t *cb) /* {{{ */
127 {
128 if (cb->curl != NULL)
129 return (0);
131 cb->curl = curl_easy_init ();
132 if (cb->curl == NULL)
133 {
134 ERROR ("curl plugin: curl_easy_init failed.");
135 return (-1);
136 }
138 if (cb->low_speed_limit > 0 && cb->low_speed_time > 0)
139 {
140 curl_easy_setopt (cb->curl, CURLOPT_LOW_SPEED_LIMIT,
141 (long) (cb->low_speed_limit * cb->low_speed_time));
142 curl_easy_setopt (cb->curl, CURLOPT_LOW_SPEED_TIME,
143 (long) cb->low_speed_time);
144 }
146 #ifdef HAVE_CURLOPT_TIMEOUT_MS
147 if (cb->timeout > 0)
148 curl_easy_setopt (cb->curl, CURLOPT_TIMEOUT_MS, (long) cb->timeout);
149 #endif
151 curl_easy_setopt (cb->curl, CURLOPT_NOSIGNAL, 1L);
152 curl_easy_setopt (cb->curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
154 cb->headers = curl_slist_append (cb->headers, "Accept: */*");
155 if (cb->format == WH_FORMAT_JSON)
156 cb->headers = curl_slist_append (cb->headers, "Content-Type: application/json");
157 else
158 cb->headers = curl_slist_append (cb->headers, "Content-Type: text/plain");
159 cb->headers = curl_slist_append (cb->headers, "Expect:");
160 curl_easy_setopt (cb->curl, CURLOPT_HTTPHEADER, cb->headers);
162 curl_easy_setopt (cb->curl, CURLOPT_ERRORBUFFER, cb->curl_errbuf);
163 curl_easy_setopt (cb->curl, CURLOPT_URL, cb->location);
164 curl_easy_setopt (cb->curl, CURLOPT_FOLLOWLOCATION, 1L);
165 curl_easy_setopt (cb->curl, CURLOPT_MAXREDIRS, 50L);
167 if (cb->user != NULL)
168 {
169 #ifdef HAVE_CURLOPT_USERNAME
170 curl_easy_setopt (cb->curl, CURLOPT_USERNAME, cb->user);
171 curl_easy_setopt (cb->curl, CURLOPT_PASSWORD,
172 (cb->pass == NULL) ? "" : cb->pass);
173 #else
174 size_t credentials_size;
176 credentials_size = strlen (cb->user) + 2;
177 if (cb->pass != NULL)
178 credentials_size += strlen (cb->pass);
180 cb->credentials = malloc (credentials_size);
181 if (cb->credentials == NULL)
182 {
183 ERROR ("curl plugin: malloc failed.");
184 return (-1);
185 }
187 ssnprintf (cb->credentials, credentials_size, "%s:%s",
188 cb->user, (cb->pass == NULL) ? "" : cb->pass);
189 curl_easy_setopt (cb->curl, CURLOPT_USERPWD, cb->credentials);
190 #endif
191 curl_easy_setopt (cb->curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
192 }
194 curl_easy_setopt (cb->curl, CURLOPT_SSL_VERIFYPEER, (long) cb->verify_peer);
195 curl_easy_setopt (cb->curl, CURLOPT_SSL_VERIFYHOST,
196 cb->verify_host ? 2L : 0L);
197 curl_easy_setopt (cb->curl, CURLOPT_SSLVERSION, cb->sslversion);
198 if (cb->cacert != NULL)
199 curl_easy_setopt (cb->curl, CURLOPT_CAINFO, cb->cacert);
200 if (cb->capath != NULL)
201 curl_easy_setopt (cb->curl, CURLOPT_CAPATH, cb->capath);
203 if (cb->clientkey != NULL && cb->clientcert != NULL)
204 {
205 curl_easy_setopt (cb->curl, CURLOPT_SSLKEY, cb->clientkey);
206 curl_easy_setopt (cb->curl, CURLOPT_SSLCERT, cb->clientcert);
208 if (cb->clientkeypass != NULL)
209 curl_easy_setopt (cb->curl, CURLOPT_SSLKEYPASSWD, cb->clientkeypass);
210 }
212 wh_reset_buffer (cb);
214 return (0);
215 } /* }}} int wh_callback_init */
217 static int wh_flush_nolock (cdtime_t timeout, wh_callback_t *cb) /* {{{ */
218 {
219 int status;
221 DEBUG ("write_http plugin: wh_flush_nolock: timeout = %.3f; "
222 "send_buffer_fill = %zu;",
223 CDTIME_T_TO_DOUBLE (timeout),
224 cb->send_buffer_fill);
226 /* timeout == 0 => flush unconditionally */
227 if (timeout > 0)
228 {
229 cdtime_t now;
231 now = cdtime ();
232 if ((cb->send_buffer_init_time + timeout) > now)
233 return (0);
234 }
236 if (cb->format == WH_FORMAT_COMMAND)
237 {
238 if (cb->send_buffer_fill == 0)
239 {
240 cb->send_buffer_init_time = cdtime ();
241 return (0);
242 }
244 status = wh_send_buffer (cb);
245 wh_reset_buffer (cb);
246 }
247 else if (cb->format == WH_FORMAT_JSON)
248 {
249 if (cb->send_buffer_fill <= 2)
250 {
251 cb->send_buffer_init_time = cdtime ();
252 return (0);
253 }
255 status = format_json_finalize (cb->send_buffer,
256 &cb->send_buffer_fill,
257 &cb->send_buffer_free);
258 if (status != 0)
259 {
260 ERROR ("write_http: wh_flush_nolock: "
261 "format_json_finalize failed.");
262 wh_reset_buffer (cb);
263 return (status);
264 }
266 status = wh_send_buffer (cb);
267 wh_reset_buffer (cb);
268 }
269 else
270 {
271 ERROR ("write_http: wh_flush_nolock: "
272 "Unknown format: %i",
273 cb->format);
274 return (-1);
275 }
277 return (status);
278 } /* }}} wh_flush_nolock */
280 static int wh_flush (cdtime_t timeout, /* {{{ */
281 const char *identifier __attribute__((unused)),
282 user_data_t *user_data)
283 {
284 wh_callback_t *cb;
285 int status;
287 if (user_data == NULL)
288 return (-EINVAL);
290 cb = user_data->data;
292 pthread_mutex_lock (&cb->send_lock);
294 if (cb->curl == NULL)
295 {
296 status = wh_callback_init (cb);
297 if (status != 0)
298 {
299 ERROR ("write_http plugin: wh_callback_init failed.");
300 pthread_mutex_unlock (&cb->send_lock);
301 return (-1);
302 }
303 }
305 status = wh_flush_nolock (timeout, cb);
306 pthread_mutex_unlock (&cb->send_lock);
308 return (status);
309 } /* }}} int wh_flush */
311 static void wh_callback_free (void *data) /* {{{ */
312 {
313 wh_callback_t *cb;
315 if (data == NULL)
316 return;
318 cb = data;
320 wh_flush_nolock (/* timeout = */ 0, cb);
322 if (cb->curl != NULL)
323 {
324 curl_easy_cleanup (cb->curl);
325 cb->curl = NULL;
326 }
328 if (cb->headers != NULL)
329 {
330 curl_slist_free_all (cb->headers);
331 cb->headers = NULL;
332 }
334 sfree (cb->name);
335 sfree (cb->location);
336 sfree (cb->user);
337 sfree (cb->pass);
338 sfree (cb->credentials);
339 sfree (cb->cacert);
340 sfree (cb->capath);
341 sfree (cb->clientkey);
342 sfree (cb->clientcert);
343 sfree (cb->clientkeypass);
344 sfree (cb->send_buffer);
346 sfree (cb);
347 } /* }}} void wh_callback_free */
349 static int wh_write_command (const data_set_t *ds, const value_list_t *vl, /* {{{ */
350 wh_callback_t *cb)
351 {
352 char key[10*DATA_MAX_NAME_LEN];
353 char values[512];
354 char command[1024];
355 size_t command_len;
357 int status;
359 if (0 != strcmp (ds->type, vl->type)) {
360 ERROR ("write_http plugin: DS type does not match "
361 "value list type");
362 return -1;
363 }
365 /* Copy the identifier to `key' and escape it. */
366 status = FORMAT_VL (key, sizeof (key), vl);
367 if (status != 0) {
368 ERROR ("write_http plugin: error with format_name");
369 return (status);
370 }
371 escape_string (key, sizeof (key));
373 /* Convert the values to an ASCII representation and put that into
374 * `values'. */
375 status = format_values (values, sizeof (values), ds, vl, cb->store_rates);
376 if (status != 0) {
377 ERROR ("write_http plugin: error with "
378 "wh_value_list_to_string");
379 return (status);
380 }
382 command_len = (size_t) ssnprintf (command, sizeof (command),
383 "PUTVAL %s interval=%.3f %s\r\n",
384 key,
385 CDTIME_T_TO_DOUBLE (vl->interval),
386 values);
387 if (command_len >= sizeof (command)) {
388 ERROR ("write_http plugin: Command buffer too small: "
389 "Need %zu bytes.", command_len + 1);
390 return (-1);
391 }
393 pthread_mutex_lock (&cb->send_lock);
395 if (cb->curl == NULL)
396 {
397 status = wh_callback_init (cb);
398 if (status != 0)
399 {
400 ERROR ("write_http plugin: wh_callback_init failed.");
401 pthread_mutex_unlock (&cb->send_lock);
402 return (-1);
403 }
404 }
406 if (command_len >= cb->send_buffer_free)
407 {
408 status = wh_flush_nolock (/* timeout = */ 0, cb);
409 if (status != 0)
410 {
411 pthread_mutex_unlock (&cb->send_lock);
412 return (status);
413 }
414 }
415 assert (command_len < cb->send_buffer_free);
417 /* `command_len + 1' because `command_len' does not include the
418 * trailing null byte. Neither does `send_buffer_fill'. */
419 memcpy (cb->send_buffer + cb->send_buffer_fill,
420 command, command_len + 1);
421 cb->send_buffer_fill += command_len;
422 cb->send_buffer_free -= command_len;
424 DEBUG ("write_http plugin: <%s> buffer %zu/%zu (%g%%) \"%s\"",
425 cb->location,
426 cb->send_buffer_fill, cb->send_buffer_size,
427 100.0 * ((double) cb->send_buffer_fill) / ((double) cb->send_buffer_size),
428 command);
430 /* Check if we have enough space for this command. */
431 pthread_mutex_unlock (&cb->send_lock);
433 return (0);
434 } /* }}} int wh_write_command */
436 static int wh_write_json (const data_set_t *ds, const value_list_t *vl, /* {{{ */
437 wh_callback_t *cb)
438 {
439 int status;
441 pthread_mutex_lock (&cb->send_lock);
443 if (cb->curl == NULL)
444 {
445 status = wh_callback_init (cb);
446 if (status != 0)
447 {
448 ERROR ("write_http plugin: wh_callback_init failed.");
449 pthread_mutex_unlock (&cb->send_lock);
450 return (-1);
451 }
452 }
454 status = format_json_value_list (cb->send_buffer,
455 &cb->send_buffer_fill,
456 &cb->send_buffer_free,
457 ds, vl, cb->store_rates);
458 if (status == (-ENOMEM))
459 {
460 status = wh_flush_nolock (/* timeout = */ 0, cb);
461 if (status != 0)
462 {
463 wh_reset_buffer (cb);
464 pthread_mutex_unlock (&cb->send_lock);
465 return (status);
466 }
468 status = format_json_value_list (cb->send_buffer,
469 &cb->send_buffer_fill,
470 &cb->send_buffer_free,
471 ds, vl, cb->store_rates);
472 }
473 if (status != 0)
474 {
475 pthread_mutex_unlock (&cb->send_lock);
476 return (status);
477 }
479 DEBUG ("write_http plugin: <%s> buffer %zu/%zu (%g%%)",
480 cb->location,
481 cb->send_buffer_fill, cb->send_buffer_size,
482 100.0 * ((double) cb->send_buffer_fill) / ((double) cb->send_buffer_size));
484 /* Check if we have enough space for this command. */
485 pthread_mutex_unlock (&cb->send_lock);
487 return (0);
488 } /* }}} int wh_write_json */
490 static int wh_write (const data_set_t *ds, const value_list_t *vl, /* {{{ */
491 user_data_t *user_data)
492 {
493 wh_callback_t *cb;
494 int status;
496 if (user_data == NULL)
497 return (-EINVAL);
499 cb = user_data->data;
501 if (cb->format == WH_FORMAT_JSON)
502 status = wh_write_json (ds, vl, cb);
503 else
504 status = wh_write_command (ds, vl, cb);
506 return (status);
507 } /* }}} int wh_write */
509 static int config_set_format (wh_callback_t *cb, /* {{{ */
510 oconfig_item_t *ci)
511 {
512 char *string;
514 if ((ci->values_num != 1)
515 || (ci->values[0].type != OCONFIG_TYPE_STRING))
516 {
517 WARNING ("write_http plugin: The `%s' config option "
518 "needs exactly one string argument.", ci->key);
519 return (-1);
520 }
522 string = ci->values[0].value.string;
523 if (strcasecmp ("Command", string) == 0)
524 cb->format = WH_FORMAT_COMMAND;
525 else if (strcasecmp ("JSON", string) == 0)
526 cb->format = WH_FORMAT_JSON;
527 else
528 {
529 ERROR ("write_http plugin: Invalid format string: %s",
530 string);
531 return (-1);
532 }
534 return (0);
535 } /* }}} int config_set_format */
537 static int wh_config_append_string (const char *name, struct curl_slist **dest, /* {{{ */
538 oconfig_item_t *ci)
539 {
540 struct curl_slist *temp = NULL;
541 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
542 {
543 WARNING ("write_http plugin: `%s' needs exactly one string argument.", name);
544 return (-1);
545 }
547 temp = curl_slist_append(*dest, ci->values[0].value.string);
548 if (temp == NULL)
549 return (-1);
551 *dest = temp;
553 return (0);
554 } /* }}} int wh_config_append_string */
556 static int wh_config_node (oconfig_item_t *ci) /* {{{ */
557 {
558 wh_callback_t *cb;
559 int buffer_size = 0;
560 user_data_t user_data;
561 char callback_name[DATA_MAX_NAME_LEN];
562 int status = 0;
563 int i;
565 cb = calloc (1, sizeof (*cb));
566 if (cb == NULL)
567 {
568 ERROR ("write_http plugin: calloc failed.");
569 return (-1);
570 }
571 cb->verify_peer = 1;
572 cb->verify_host = 1;
573 cb->format = WH_FORMAT_COMMAND;
574 cb->sslversion = CURL_SSLVERSION_DEFAULT;
575 cb->low_speed_limit = 0;
576 cb->timeout = 0;
577 cb->log_http_error = 0;
578 cb->headers = NULL;
581 pthread_mutex_init (&cb->send_lock, /* attr = */ NULL);
583 cf_util_get_string (ci, &cb->name);
585 /* FIXME: Remove this legacy mode in version 6. */
586 if (strcasecmp ("URL", ci->key) == 0)
587 cf_util_get_string (ci, &cb->location);
589 for (i = 0; i < ci->children_num; i++)
590 {
591 oconfig_item_t *child = ci->children + i;
593 if (strcasecmp ("URL", child->key) == 0)
594 status = cf_util_get_string (child, &cb->location);
595 else if (strcasecmp ("User", child->key) == 0)
596 status = cf_util_get_string (child, &cb->user);
597 else if (strcasecmp ("Password", child->key) == 0)
598 status = cf_util_get_string (child, &cb->pass);
599 else if (strcasecmp ("VerifyPeer", child->key) == 0)
600 status = cf_util_get_boolean (child, &cb->verify_peer);
601 else if (strcasecmp ("VerifyHost", child->key) == 0)
602 status = cf_util_get_boolean (child, &cb->verify_host);
603 else if (strcasecmp ("CACert", child->key) == 0)
604 status = cf_util_get_string (child, &cb->cacert);
605 else if (strcasecmp ("CAPath", child->key) == 0)
606 status = cf_util_get_string (child, &cb->capath);
607 else if (strcasecmp ("ClientKey", child->key) == 0)
608 status = cf_util_get_string (child, &cb->clientkey);
609 else if (strcasecmp ("ClientCert", child->key) == 0)
610 status = cf_util_get_string (child, &cb->clientcert);
611 else if (strcasecmp ("ClientKeyPass", child->key) == 0)
612 status = cf_util_get_string (child, &cb->clientkeypass);
613 else if (strcasecmp ("SSLVersion", child->key) == 0)
614 {
615 char *value = NULL;
617 status = cf_util_get_string (child, &value);
618 if (status != 0)
619 break;
621 if (value == NULL || strcasecmp ("default", value) == 0)
622 cb->sslversion = CURL_SSLVERSION_DEFAULT;
623 else if (strcasecmp ("SSLv2", value) == 0)
624 cb->sslversion = CURL_SSLVERSION_SSLv2;
625 else if (strcasecmp ("SSLv3", value) == 0)
626 cb->sslversion = CURL_SSLVERSION_SSLv3;
627 else if (strcasecmp ("TLSv1", value) == 0)
628 cb->sslversion = CURL_SSLVERSION_TLSv1;
629 #if (LIBCURL_VERSION_MAJOR > 7) || (LIBCURL_VERSION_MAJOR == 7 && LIBCURL_VERSION_MINOR >= 34)
630 else if (strcasecmp ("TLSv1_0", value) == 0)
631 cb->sslversion = CURL_SSLVERSION_TLSv1_0;
632 else if (strcasecmp ("TLSv1_1", value) == 0)
633 cb->sslversion = CURL_SSLVERSION_TLSv1_1;
634 else if (strcasecmp ("TLSv1_2", value) == 0)
635 cb->sslversion = CURL_SSLVERSION_TLSv1_2;
636 #endif
637 else
638 {
639 ERROR ("write_http plugin: Invalid SSLVersion "
640 "option: %s.", value);
641 status = EINVAL;
642 }
644 sfree(value);
645 }
646 else if (strcasecmp ("Format", child->key) == 0)
647 status = config_set_format (cb, child);
648 else if (strcasecmp ("StoreRates", child->key) == 0)
649 status = cf_util_get_boolean (child, &cb->store_rates);
650 else if (strcasecmp ("BufferSize", child->key) == 0)
651 status = cf_util_get_int (child, &buffer_size);
652 else if (strcasecmp ("LowSpeedLimit", child->key) == 0)
653 status = cf_util_get_int (child, &cb->low_speed_limit);
654 else if (strcasecmp ("Timeout", child->key) == 0)
655 status = cf_util_get_int (child, &cb->timeout);
656 else if (strcasecmp ("LogHttpError", child->key) == 0)
657 status = cf_util_get_boolean (child, &cb->log_http_error);
658 else if (strcasecmp ("Header", child->key) == 0)
659 status = wh_config_append_string ("Header", &cb->headers, child);
660 else
661 {
662 ERROR ("write_http plugin: Invalid configuration "
663 "option: %s.", child->key);
664 status = EINVAL;
665 }
667 if (status != 0)
668 break;
669 }
671 if (status != 0)
672 {
673 wh_callback_free (cb);
674 return (status);
675 }
677 if (cb->location == NULL)
678 {
679 ERROR ("write_http plugin: no URL defined for instance '%s'",
680 cb->name);
681 wh_callback_free (cb);
682 return (-1);
683 }
685 if (cb->low_speed_limit > 0)
686 cb->low_speed_time = CDTIME_T_TO_TIME_T(plugin_get_interval());
688 /* Determine send_buffer_size. */
689 cb->send_buffer_size = WRITE_HTTP_DEFAULT_BUFFER_SIZE;
690 if (buffer_size >= 1024)
691 cb->send_buffer_size = (size_t) buffer_size;
692 else if (buffer_size != 0)
693 ERROR ("write_http plugin: Ignoring invalid BufferSize setting (%d).",
694 buffer_size);
696 /* Allocate the buffer. */
697 cb->send_buffer = malloc (cb->send_buffer_size);
698 if (cb->send_buffer == NULL)
699 {
700 ERROR ("write_http plugin: malloc(%zu) failed.", cb->send_buffer_size);
701 wh_callback_free (cb);
702 return (-1);
703 }
704 /* Nulls the buffer and sets ..._free and ..._fill. */
705 wh_reset_buffer (cb);
707 ssnprintf (callback_name, sizeof (callback_name), "write_http/%s",
708 cb->name);
709 DEBUG ("write_http: Registering write callback '%s' with URL '%s'",
710 callback_name, cb->location);
712 memset (&user_data, 0, sizeof (user_data));
713 user_data.data = cb;
714 user_data.free_func = NULL;
715 plugin_register_flush (callback_name, wh_flush, &user_data);
717 user_data.free_func = wh_callback_free;
718 plugin_register_write (callback_name, wh_write, &user_data);
720 return (0);
721 } /* }}} int wh_config_node */
723 static int wh_config (oconfig_item_t *ci) /* {{{ */
724 {
725 int i;
727 for (i = 0; i < ci->children_num; i++)
728 {
729 oconfig_item_t *child = ci->children + i;
731 if (strcasecmp ("Node", child->key) == 0)
732 wh_config_node (child);
733 /* FIXME: Remove this legacy mode in version 6. */
734 else if (strcasecmp ("URL", child->key) == 0) {
735 WARNING ("write_http plugin: Legacy <URL> block found. "
736 "Please use <Node> instead.");
737 wh_config_node (child);
738 }
739 else
740 {
741 ERROR ("write_http plugin: Invalid configuration "
742 "option: %s.", child->key);
743 }
744 }
746 return (0);
747 } /* }}} int wh_config */
749 static int wh_init (void) /* {{{ */
750 {
751 /* Call this while collectd is still single-threaded to avoid
752 * initialization issues in libgcrypt. */
753 curl_global_init (CURL_GLOBAL_SSL);
754 return (0);
755 } /* }}} int wh_init */
757 void module_register (void) /* {{{ */
758 {
759 plugin_register_complex_config ("write_http", wh_config);
760 plugin_register_init ("write_http", wh_init);
761 } /* }}} void module_register */
763 /* vim: set fdm=marker sw=8 ts=8 tw=78 et : */