2 * collectd - src/write_riemann.c
3 * Copyright (C) 2012,2013 Pierre-Yves Ritschard
4 * Copyright (C) 2013 Florian octo Forster
5 * Copyright (C) 2015,2016 Gergely Nagy
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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.
26 * Pierre-Yves Ritschard <pyr at spootnik.org>
27 * Florian octo Forster <octo at collectd.org>
28 * Gergely Nagy <algernon at madhouse-project.org>
35 #include "utils_cache.h"
36 #include "utils_complain.h"
37 #include "write_riemann_threshold.h"
40 #include <riemann/riemann-client.h>
42 #define RIEMANN_HOST "localhost"
43 #define RIEMANN_PORT 5555
44 #define RIEMANN_TTL_FACTOR 2.0
45 #define RIEMANN_BATCH_MAX 8192
48 c_complain_t init_complaint;
50 char *event_service_prefix;
54 _Bool check_thresholds;
56 _Bool always_append_ds;
59 riemann_client_type_t client_type;
60 riemann_client_t *client;
66 riemann_message_t *batch_msg;
70 struct timeval timeout;
73 static char **riemann_tags;
74 static size_t riemann_tags_num;
75 static char **riemann_attrs;
76 static size_t riemann_attrs_num;
78 /* host->lock must be held when calling this function. */
79 static int wrr_connect(struct riemann_host *host) /* {{{ */
87 node = (host->node != NULL) ? host->node : RIEMANN_HOST;
88 port = (host->port) ? host->port : RIEMANN_PORT;
92 host->client = riemann_client_create(
93 host->client_type, node, port, RIEMANN_CLIENT_OPTION_TLS_CA_FILE,
94 host->tls_ca_file, RIEMANN_CLIENT_OPTION_TLS_CERT_FILE,
95 host->tls_cert_file, RIEMANN_CLIENT_OPTION_TLS_KEY_FILE,
96 host->tls_key_file, RIEMANN_CLIENT_OPTION_NONE);
97 if (host->client == NULL) {
98 c_complain(LOG_ERR, &host->init_complaint,
99 "write_riemann plugin: Unable to connect to Riemann at %s:%d",
103 #if RCC_VERSION_NUMBER >= 0x010800
104 if (host->timeout.tv_sec != 0) {
105 if (riemann_client_set_timeout(host->client, &host->timeout) != 0) {
106 riemann_client_free(host->client);
108 c_complain(LOG_ERR, &host->init_complaint,
109 "write_riemann plugin: Unable to connect to Riemann at %s:%d",
116 set_sock_opts(riemann_client_get_fd(host->client));
118 c_release(LOG_INFO, &host->init_complaint,
119 "write_riemann plugin: Successfully connected to %s:%d", node,
123 } /* }}} int wrr_connect */
125 /* host->lock must be held when calling this function. */
126 static int wrr_disconnect(struct riemann_host *host) /* {{{ */
131 riemann_client_free(host->client);
135 } /* }}} int wrr_disconnect */
138 * Function to send messages to riemann.
140 * Acquires the host lock, disconnects on errors.
142 static int wrr_send_nolock(struct riemann_host *host,
143 riemann_message_t *msg) /* {{{ */
147 status = wrr_connect(host);
152 status = riemann_client_send_message(host->client, msg);
154 wrr_disconnect(host);
159 * For TCP we need to receive message acknowledgemenent.
161 if (host->client_type != RIEMANN_CLIENT_UDP) {
162 riemann_message_t *response;
164 response = riemann_client_recv_message(host->client);
166 if (response == NULL) {
167 wrr_disconnect(host);
170 riemann_message_free(response);
174 } /* }}} int wrr_send */
176 static int wrr_send(struct riemann_host *host, riemann_message_t *msg) {
179 pthread_mutex_lock(&host->lock);
180 status = wrr_send_nolock(host, msg);
181 pthread_mutex_unlock(&host->lock);
185 static riemann_message_t *
186 wrr_notification_to_message(struct riemann_host *host, /* {{{ */
187 notification_t const *n) {
188 riemann_message_t *msg;
189 riemann_event_t *event;
190 char service_buffer[6 * DATA_MAX_NAME_LEN];
191 char const *severity;
193 switch (n->severity) {
198 severity = "warning";
201 severity = "critical";
204 severity = "unknown";
207 format_name(service_buffer, sizeof(service_buffer),
208 /* host = */ "", n->plugin, n->plugin_instance, n->type,
211 event = riemann_event_create(
212 RIEMANN_EVENT_FIELD_HOST, n->host, RIEMANN_EVENT_FIELD_TIME,
213 (int64_t)CDTIME_T_TO_TIME_T(n->time), RIEMANN_EVENT_FIELD_TAGS,
214 "notification", NULL, RIEMANN_EVENT_FIELD_STATE, severity,
215 RIEMANN_EVENT_FIELD_SERVICE, &service_buffer[1],
216 RIEMANN_EVENT_FIELD_NONE);
219 riemann_event_string_attribute_add(event, "host", n->host);
220 if (n->plugin[0] != 0)
221 riemann_event_string_attribute_add(event, "plugin", n->plugin);
222 if (n->plugin_instance[0] != 0)
223 riemann_event_string_attribute_add(event, "plugin_instance",
227 riemann_event_string_attribute_add(event, "type", n->type);
228 if (n->type_instance[0] != 0)
229 riemann_event_string_attribute_add(event, "type_instance",
232 for (size_t i = 0; i < riemann_attrs_num; i += 2)
233 riemann_event_string_attribute_add(event, riemann_attrs[i],
234 riemann_attrs[i + 1]);
236 for (size_t i = 0; i < riemann_tags_num; i++)
237 riemann_event_tag_add(event, riemann_tags[i]);
239 if (n->message[0] != 0)
240 riemann_event_string_attribute_add(event, "description", n->message);
242 /* Pull in values from threshold and add extra attributes */
243 for (notification_meta_t *meta = n->meta; meta != NULL; meta = meta->next) {
244 if (strcasecmp("CurrentValue", meta->name) == 0 &&
245 meta->type == NM_TYPE_DOUBLE) {
246 riemann_event_set(event, RIEMANN_EVENT_FIELD_METRIC_D,
247 (double)meta->nm_value.nm_double,
248 RIEMANN_EVENT_FIELD_NONE);
252 if (meta->type == NM_TYPE_STRING) {
253 riemann_event_string_attribute_add(event, meta->name,
254 meta->nm_value.nm_string);
259 msg = riemann_message_create_with_events(event, NULL);
261 ERROR("write_riemann plugin: riemann_message_create_with_events() failed.");
262 riemann_event_free(event);
266 DEBUG("write_riemann plugin: Successfully created message for notification: "
267 "host = \"%s\", service = \"%s\", state = \"%s\"",
268 event->host, event->service, event->state);
270 } /* }}} riemann_message_t *wrr_notification_to_message */
272 static riemann_event_t *
273 wrr_value_to_event(struct riemann_host const *host, /* {{{ */
274 data_set_t const *ds, value_list_t const *vl, size_t index,
275 gauge_t const *rates, int status) {
276 riemann_event_t *event;
277 char name_buffer[5 * DATA_MAX_NAME_LEN];
278 char service_buffer[6 * DATA_MAX_NAME_LEN];
281 event = riemann_event_new();
283 ERROR("write_riemann plugin: riemann_event_new() failed.");
287 format_name(name_buffer, sizeof(name_buffer),
288 /* host = */ "", vl->plugin, vl->plugin_instance, vl->type,
290 if (host->always_append_ds || (ds->ds_num > 1)) {
291 if (host->event_service_prefix == NULL)
292 ssnprintf(service_buffer, sizeof(service_buffer), "%s/%s",
293 &name_buffer[1], ds->ds[index].name);
295 ssnprintf(service_buffer, sizeof(service_buffer), "%s%s/%s",
296 host->event_service_prefix, &name_buffer[1],
299 if (host->event_service_prefix == NULL)
300 sstrncpy(service_buffer, &name_buffer[1], sizeof(service_buffer));
302 ssnprintf(service_buffer, sizeof(service_buffer), "%s%s",
303 host->event_service_prefix, &name_buffer[1]);
307 event, RIEMANN_EVENT_FIELD_HOST, vl->host, RIEMANN_EVENT_FIELD_TIME,
308 (int64_t)CDTIME_T_TO_TIME_T(vl->time), RIEMANN_EVENT_FIELD_TTL,
309 (float)CDTIME_T_TO_DOUBLE(vl->interval) * host->ttl_factor,
310 RIEMANN_EVENT_FIELD_STRING_ATTRIBUTES, "plugin", vl->plugin, "type",
311 vl->type, "ds_name", ds->ds[index].name, NULL,
312 RIEMANN_EVENT_FIELD_SERVICE, service_buffer, RIEMANN_EVENT_FIELD_NONE);
314 if (host->check_thresholds) {
315 const char *state = NULL;
332 riemann_event_set(event, RIEMANN_EVENT_FIELD_STATE, state,
333 RIEMANN_EVENT_FIELD_NONE);
336 if (vl->plugin_instance[0] != 0)
337 riemann_event_string_attribute_add(event, "plugin_instance",
338 vl->plugin_instance);
339 if (vl->type_instance[0] != 0)
340 riemann_event_string_attribute_add(event, "type_instance",
343 if ((ds->ds[index].type != DS_TYPE_GAUGE) && (rates != NULL)) {
344 char ds_type[DATA_MAX_NAME_LEN];
346 ssnprintf(ds_type, sizeof(ds_type), "%s:rate",
347 DS_TYPE_TO_STRING(ds->ds[index].type));
348 riemann_event_string_attribute_add(event, "ds_type", ds_type);
350 riemann_event_string_attribute_add(event, "ds_type",
351 DS_TYPE_TO_STRING(ds->ds[index].type));
355 char ds_index[DATA_MAX_NAME_LEN];
357 ssnprintf(ds_index, sizeof(ds_index), "%zu", index);
358 riemann_event_string_attribute_add(event, "ds_index", ds_index);
361 for (i = 0; i < riemann_attrs_num; i += 2)
362 riemann_event_string_attribute_add(event, riemann_attrs[i],
363 riemann_attrs[i + 1]);
365 for (i = 0; i < riemann_tags_num; i++)
366 riemann_event_tag_add(event, riemann_tags[i]);
368 if (ds->ds[index].type == DS_TYPE_GAUGE) {
369 riemann_event_set(event, RIEMANN_EVENT_FIELD_METRIC_D,
370 (double)vl->values[index].gauge,
371 RIEMANN_EVENT_FIELD_NONE);
372 } else if (rates != NULL) {
373 riemann_event_set(event, RIEMANN_EVENT_FIELD_METRIC_D, (double)rates[index],
374 RIEMANN_EVENT_FIELD_NONE);
378 if (ds->ds[index].type == DS_TYPE_DERIVE)
379 metric = (int64_t)vl->values[index].derive;
380 else if (ds->ds[index].type == DS_TYPE_ABSOLUTE)
381 metric = (int64_t)vl->values[index].absolute;
383 metric = (int64_t)vl->values[index].counter;
385 riemann_event_set(event, RIEMANN_EVENT_FIELD_METRIC_S64, (int64_t)metric,
386 RIEMANN_EVENT_FIELD_NONE);
389 DEBUG("write_riemann plugin: Successfully created message for metric: "
390 "host = \"%s\", service = \"%s\"",
391 event->host, event->service);
393 } /* }}} riemann_event_t *wrr_value_to_event */
395 static riemann_message_t *
396 wrr_value_list_to_message(struct riemann_host const *host, /* {{{ */
397 data_set_t const *ds, value_list_t const *vl,
399 riemann_message_t *msg;
401 gauge_t *rates = NULL;
403 /* Initialize the Msg structure. */
404 msg = riemann_message_new();
406 ERROR("write_riemann plugin: riemann_message_new failed.");
410 if (host->store_rates) {
411 rates = uc_get_rate(ds, vl);
413 ERROR("write_riemann plugin: uc_get_rate failed.");
414 riemann_message_free(msg);
419 for (i = 0; i < vl->values_len; i++) {
420 riemann_event_t *event;
422 event = wrr_value_to_event(host, ds, vl, (int)i, rates, statuses[i]);
424 riemann_message_free(msg);
428 riemann_message_append_events(msg, event, NULL);
433 } /* }}} riemann_message_t *wrr_value_list_to_message */
436 * Always call while holding host->lock !
438 static int wrr_batch_flush_nolock(cdtime_t timeout, struct riemann_host *host) {
444 if ((host->batch_init + timeout) > now) {
448 wrr_send_nolock(host, host->batch_msg);
449 riemann_message_free(host->batch_msg);
451 host->batch_init = now;
452 host->batch_msg = NULL;
456 static int wrr_batch_flush(cdtime_t timeout,
457 const char *identifier __attribute__((unused)),
458 user_data_t *user_data) {
459 struct riemann_host *host;
462 if (user_data == NULL)
465 host = user_data->data;
466 pthread_mutex_lock(&host->lock);
467 status = wrr_batch_flush_nolock(timeout, host);
470 LOG_ERR, &host->init_complaint,
471 "write_riemann plugin: riemann_client_send failed with status %i",
474 c_release(LOG_DEBUG, &host->init_complaint,
475 "write_riemann plugin: batch sent.");
477 pthread_mutex_unlock(&host->lock);
481 static int wrr_batch_add_value_list(struct riemann_host *host, /* {{{ */
482 data_set_t const *ds,
483 value_list_t const *vl, int *statuses) {
484 riemann_message_t *msg;
489 msg = wrr_value_list_to_message(host, ds, vl, statuses);
493 pthread_mutex_lock(&host->lock);
495 if (host->batch_msg == NULL) {
496 host->batch_msg = msg;
500 status = riemann_message_append_events_n(host->batch_msg, msg->n_events,
505 riemann_message_free(msg);
508 pthread_mutex_unlock(&host->lock);
509 ERROR("write_riemann plugin: out of memory");
514 len = riemann_message_get_packed_size(host->batch_msg);
516 if ((host->batch_max < 0) || (((size_t)host->batch_max) <= len)) {
517 ret = wrr_batch_flush_nolock(0, host);
519 if (host->batch_timeout > 0) {
520 timeout = TIME_T_TO_CDTIME_T((time_t)host->batch_timeout);
521 ret = wrr_batch_flush_nolock(timeout, host);
525 pthread_mutex_unlock(&host->lock);
527 } /* }}} riemann_message_t *wrr_batch_add_value_list */
529 static int wrr_notification(const notification_t *n, user_data_t *ud) /* {{{ */
532 struct riemann_host *host = ud->data;
533 riemann_message_t *msg;
535 if (!host->notifications)
539 * Never batch for notifications, send them ASAP
541 msg = wrr_notification_to_message(host, n);
545 status = wrr_send(host, msg);
548 LOG_ERR, &host->init_complaint,
549 "write_riemann plugin: riemann_client_send failed with status %i",
552 c_release(LOG_DEBUG, &host->init_complaint,
553 "write_riemann plugin: riemann_client_send succeeded");
555 riemann_message_free(msg);
557 } /* }}} int wrr_notification */
559 static int wrr_write(const data_set_t *ds, /* {{{ */
560 const value_list_t *vl, user_data_t *ud) {
562 int statuses[vl->values_len];
563 struct riemann_host *host = ud->data;
564 riemann_message_t *msg;
566 if (host->check_thresholds) {
567 status = write_riemann_threshold_check(ds, vl, statuses);
571 memset(statuses, 0, sizeof(statuses));
574 if (host->client_type != RIEMANN_CLIENT_UDP && host->batch_mode) {
575 wrr_batch_add_value_list(host, ds, vl, statuses);
577 msg = wrr_value_list_to_message(host, ds, vl, statuses);
581 status = wrr_send(host, msg);
583 riemann_message_free(msg);
586 } /* }}} int wrr_write */
588 static void wrr_free(void *p) /* {{{ */
590 struct riemann_host *host = p;
595 pthread_mutex_lock(&host->lock);
597 host->reference_count--;
598 if (host->reference_count > 0) {
599 pthread_mutex_unlock(&host->lock);
603 wrr_disconnect(host);
605 pthread_mutex_destroy(&host->lock);
607 } /* }}} void wrr_free */
609 static int wrr_config_node(oconfig_item_t *ci) /* {{{ */
611 struct riemann_host *host = NULL;
614 oconfig_item_t *child;
615 char callback_name[DATA_MAX_NAME_LEN];
617 if ((host = calloc(1, sizeof(*host))) == NULL) {
618 ERROR("write_riemann plugin: calloc failed.");
621 pthread_mutex_init(&host->lock, NULL);
622 C_COMPLAIN_INIT(&host->init_complaint);
623 host->reference_count = 1;
626 host->notifications = 1;
627 host->check_thresholds = 0;
628 host->store_rates = 1;
629 host->always_append_ds = 0;
630 host->batch_mode = 1;
631 host->batch_max = RIEMANN_BATCH_MAX; /* typical MSS */
632 host->batch_init = cdtime();
633 host->batch_timeout = 0;
634 host->ttl_factor = RIEMANN_TTL_FACTOR;
636 host->client_type = RIEMANN_CLIENT_TCP;
637 host->timeout.tv_sec = 0;
638 host->timeout.tv_usec = 0;
640 status = cf_util_get_string(ci, &host->name);
642 WARNING("write_riemann plugin: Required host name is missing.");
647 for (i = 0; i < ci->children_num; i++) {
649 * The code here could be simplified but makes room
650 * for easy adding of new options later on.
652 child = &ci->children[i];
655 if (strcasecmp("Host", child->key) == 0) {
656 status = cf_util_get_string(child, &host->node);
659 } else if (strcasecmp("Notifications", child->key) == 0) {
660 status = cf_util_get_boolean(child, &host->notifications);
663 } else if (strcasecmp("EventServicePrefix", child->key) == 0) {
664 status = cf_util_get_string(child, &host->event_service_prefix);
667 } else if (strcasecmp("CheckThresholds", child->key) == 0) {
668 status = cf_util_get_boolean(child, &host->check_thresholds);
671 } else if (strcasecmp("Batch", child->key) == 0) {
672 status = cf_util_get_boolean(child, &host->batch_mode);
675 } else if (strcasecmp("BatchMaxSize", child->key) == 0) {
676 status = cf_util_get_int(child, &host->batch_max);
679 } else if (strcasecmp("BatchFlushTimeout", child->key) == 0) {
680 status = cf_util_get_int(child, &host->batch_timeout);
683 } else if (strcasecmp("Timeout", child->key) == 0) {
684 #if RCC_VERSION_NUMBER >= 0x010800
685 status = cf_util_get_int(child, (int *)&host->timeout.tv_sec);
689 WARNING("write_riemann plugin: The Timeout option is not supported. Please upgrade the Riemann client to at least 1.8.0.");
691 } else if (strcasecmp("Port", child->key) == 0) {
692 host->port = cf_util_get_port_number(child);
693 if (host->port == -1) {
694 ERROR("write_riemann plugin: Invalid argument "
695 "configured for the \"Port\" "
699 } else if (strcasecmp("Protocol", child->key) == 0) {
701 status = cf_util_get_string_buffer(child, tmp, sizeof(tmp));
703 ERROR("write_riemann plugin: cf_util_get_"
704 "string_buffer failed with "
710 if (strcasecmp("UDP", tmp) == 0)
711 host->client_type = RIEMANN_CLIENT_UDP;
712 else if (strcasecmp("TCP", tmp) == 0)
713 host->client_type = RIEMANN_CLIENT_TCP;
714 else if (strcasecmp("TLS", tmp) == 0)
715 host->client_type = RIEMANN_CLIENT_TLS;
717 WARNING("write_riemann plugin: The value "
718 "\"%s\" is not valid for the "
719 "\"Protocol\" option. Use "
720 "either \"UDP\", \"TCP\" or \"TLS\".",
722 } else if (strcasecmp("TLSCAFile", child->key) == 0) {
723 status = cf_util_get_string(child, &host->tls_ca_file);
725 ERROR("write_riemann plugin: cf_util_get_"
726 "string_buffer failed with "
731 } else if (strcasecmp("TLSCertFile", child->key) == 0) {
732 status = cf_util_get_string(child, &host->tls_cert_file);
734 ERROR("write_riemann plugin: cf_util_get_"
735 "string_buffer failed with "
740 } else if (strcasecmp("TLSKeyFile", child->key) == 0) {
741 status = cf_util_get_string(child, &host->tls_key_file);
743 ERROR("write_riemann plugin: cf_util_get_"
744 "string_buffer failed with "
749 } else if (strcasecmp("StoreRates", child->key) == 0) {
750 status = cf_util_get_boolean(child, &host->store_rates);
753 } else if (strcasecmp("AlwaysAppendDS", child->key) == 0) {
754 status = cf_util_get_boolean(child, &host->always_append_ds);
757 } else if (strcasecmp("TTLFactor", child->key) == 0) {
759 status = cf_util_get_double(child, &tmp);
763 host->ttl_factor = tmp;
764 } else if (tmp >= 1.0) {
765 NOTICE("write_riemann plugin: The configured "
766 "TTLFactor is very small "
767 "(%.1f). A value of 2.0 or "
768 "greater is recommended.",
770 host->ttl_factor = tmp;
771 } else if (tmp > 0.0) {
772 WARNING("write_riemann plugin: The configured "
773 "TTLFactor is too small to be "
774 "useful (%.1f). I'll use it "
775 "since the user knows best, "
776 "but under protest.",
778 host->ttl_factor = tmp;
779 } else { /* zero, negative and NAN */
780 ERROR("write_riemann plugin: The configured "
781 "TTLFactor is invalid (%.1f).",
785 WARNING("write_riemann plugin: ignoring unknown config "
795 ssnprintf(callback_name, sizeof(callback_name), "write_riemann/%s",
800 .free_func = wrr_free
803 pthread_mutex_lock(&host->lock);
805 status = plugin_register_write(callback_name, wrr_write, &ud);
807 if (host->client_type != RIEMANN_CLIENT_UDP && host->batch_mode) {
809 plugin_register_flush(callback_name, wrr_batch_flush, &ud);
812 WARNING("write_riemann plugin: plugin_register_write (\"%s\") "
813 "failed with status %i.",
814 callback_name, status);
816 host->reference_count++;
818 status = plugin_register_notification(callback_name, wrr_notification, &ud);
820 WARNING("write_riemann plugin: plugin_register_notification (\"%s\") "
821 "failed with status %i.",
822 callback_name, status);
824 host->reference_count++;
826 if (host->reference_count <= 1) {
827 /* Both callbacks failed => free memory.
828 * We need to unlock here, because riemann_free() will lock.
829 * This is not a race condition, because we're the only one
830 * holding a reference. */
831 pthread_mutex_unlock(&host->lock);
836 host->reference_count--;
837 pthread_mutex_unlock(&host->lock);
840 } /* }}} int wrr_config_node */
842 static int wrr_config(oconfig_item_t *ci) /* {{{ */
845 oconfig_item_t *child;
848 for (i = 0; i < ci->children_num; i++) {
849 child = &ci->children[i];
851 if (strcasecmp("Node", child->key) == 0) {
852 wrr_config_node(child);
853 } else if (strcasecmp(child->key, "attribute") == 0) {
857 if (child->values_num != 2) {
858 WARNING("riemann attributes need both a key and a value.");
861 if (child->values[0].type != OCONFIG_TYPE_STRING ||
862 child->values[1].type != OCONFIG_TYPE_STRING) {
863 WARNING("riemann attribute needs string arguments.");
866 if ((key = strdup(child->values[0].value.string)) == NULL) {
867 WARNING("cannot allocate memory for attribute key.");
870 if ((val = strdup(child->values[1].value.string)) == NULL) {
871 WARNING("cannot allocate memory for attribute value.");
875 strarray_add(&riemann_attrs, &riemann_attrs_num, key);
876 strarray_add(&riemann_attrs, &riemann_attrs_num, val);
877 DEBUG("write_riemann: got attr: %s => %s", key, val);
880 } else if (strcasecmp(child->key, "tag") == 0) {
882 status = cf_util_get_string(child, &tmp);
886 strarray_add(&riemann_tags, &riemann_tags_num, tmp);
887 DEBUG("write_riemann plugin: Got tag: %s", tmp);
890 WARNING("write_riemann plugin: Ignoring unknown "
891 "configuration option \"%s\" at top level.",
896 } /* }}} int wrr_config */
898 void module_register(void) {
899 plugin_register_complex_config("write_riemann", wrr_config);
902 /* vim: set sw=8 sts=8 ts=8 noet : */