2 * collectd - src/write_sensu.c
3 * Copyright (C) 2015 Fabrice A. Marie
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Fabrice A. Marie <fabrice at kibinlabs.com>
33 #include "configfile.h"
34 #include "utils_cache.h"
35 #include <arpa/inet.h>
42 #define SENSU_HOST "localhost"
43 #define SENSU_PORT "3030"
46 #define my_asprintf asprintf
47 #define my_vasprintf vasprintf
50 * asprintf() is available from Solaris 10 update 11.
51 * For older versions, use asprintf() portable implementation from
52 * https://github.com/littlstar/asprintf.c/blob/master/
53 * copyright (c) 2014 joseph werle <joseph.werle@gmail.com> under MIT license.
56 static int my_vasprintf(char **str, const char *fmt, va_list args) {
61 // apply variadic arguments to
62 // sprintf with format to get size
63 size = vsnprintf(NULL, size, fmt, tmpa);
66 // return -1 to be compliant if
67 // size is less than 0
68 if (size < 0) { return -1; }
69 // alloc with size plus 1 for `\0'
70 *str = (char *) malloc(size + 1);
71 // return -1 to be compliant
72 // if pointer is `NULL'
73 if (NULL == *str) { return -1; }
74 // format string with original
75 // variadic arguments and set new size
76 size = vsprintf(*str, fmt, args);
80 static int my_asprintf(char **str, const char *fmt, ...) {
83 // init variadic argumens
85 // format and get size
86 size = my_vasprintf(str, fmt, args);
101 char *event_service_prefix;
102 struct str_list metric_handlers;
103 struct str_list notification_handlers;
106 pthread_mutex_t lock;
110 _Bool always_append_ds;
115 struct addrinfo *res;
119 static char *sensu_tags = NULL;
120 static char **sensu_attrs = NULL;
121 static size_t sensu_attrs_num;
123 static int add_str_to_list(struct str_list *strs,
124 const char *str_to_add) /* {{{ */
126 char **old_strs_ptr = strs->strs;
127 char *newstr = strdup(str_to_add);
128 if (newstr == NULL) {
129 ERROR("write_sensu plugin: Unable to alloc memory");
132 strs->strs = realloc(strs->strs, sizeof(char *) *(strs->nb_strs + 1));
133 if (strs->strs == NULL) {
134 strs->strs = old_strs_ptr;
136 ERROR("write_sensu plugin: Unable to alloc memory");
139 strs->strs[strs->nb_strs] = newstr;
143 /* }}} int add_str_to_list */
145 static void free_str_list(struct str_list *strs) /* {{{ */
147 for (int i=0; i<strs->nb_strs; i++)
151 /* }}} void free_str_list */
153 static int sensu_connect(struct sensu_host *host) /* {{{ */
159 // Resolve the target if we haven't done already
160 if (!(host->flags & F_READY)) {
161 memset(&service, 0, sizeof(service));
164 node = (host->node != NULL) ? host->node : SENSU_HOST;
165 service = (host->service != NULL) ? host->service : SENSU_PORT;
167 struct addrinfo ai_hints = {
168 .ai_family = AF_INET,
169 .ai_flags = AI_ADDRCONFIG,
170 .ai_socktype = SOCK_STREAM
173 if ((e = getaddrinfo(node, service, &ai_hints, &(host->res))) != 0) {
174 ERROR("write_sensu plugin: Unable to resolve host \"%s\": %s",
175 node, gai_strerror(e));
178 DEBUG("write_sensu plugin: successfully resolved host/port: %s/%s",
180 host->flags |= F_READY;
183 struct linger so_linger;
185 for (struct addrinfo *ai = host->res; ai != NULL; ai = ai->ai_next) {
187 if ((host->s = socket(ai->ai_family,
189 ai->ai_protocol)) == -1) {
193 // Set very low close() lingering
194 so_linger.l_onoff = 1;
195 so_linger.l_linger = 3;
196 if (setsockopt(host->s, SOL_SOCKET, SO_LINGER, &so_linger, sizeof so_linger) != 0)
197 WARNING("write_sensu plugin: failed to set socket close() lingering");
199 // connect the socket
200 if (connect(host->s, ai->ai_addr, ai->ai_addrlen) != 0) {
205 DEBUG("write_sensu plugin: connected");
210 WARNING("write_sensu plugin: Unable to connect to sensu client");
214 } /* }}} int sensu_connect */
216 static void sensu_close_socket(struct sensu_host *host) /* {{{ */
222 } /* }}} void sensu_close_socket */
224 static char *build_json_str_list(const char *tag, struct str_list const *list) /* {{{ */
227 char *ret_str = NULL;
229 if (list->nb_strs == 0) {
230 ret_str = malloc(sizeof(char));
231 if (ret_str == NULL) {
232 ERROR("write_sensu plugin: Unable to alloc memory");
238 res = my_asprintf(&temp_str, "\"%s\": [\"%s\"", tag, list->strs[0]);
240 ERROR("write_sensu plugin: Unable to alloc memory");
244 for (int i=1; i<list->nb_strs; i++) {
245 res = my_asprintf(&ret_str, "%s, \"%s\"", temp_str, list->strs[i]);
248 ERROR("write_sensu plugin: Unable to alloc memory");
253 res = my_asprintf(&ret_str, "%s]", temp_str);
256 ERROR("write_sensu plugin: Unable to alloc memory");
261 } /* }}} char *build_json_str_list*/
263 static int sensu_format_name2(char *ret, int ret_len,
264 const char *hostname,
265 const char *plugin, const char *plugin_instance,
266 const char *type, const char *type_instance,
267 const char *separator)
273 buffer_size = (size_t) ret_len;
275 #define APPEND(str) do { \
276 size_t l = strlen (str); \
277 if (l >= buffer_size) \
279 memcpy (buffer, (str), l); \
280 buffer += l; buffer_size -= l; \
283 assert (plugin != NULL);
284 assert (type != NULL);
289 if ((plugin_instance != NULL) && (plugin_instance[0] != 0))
292 APPEND (plugin_instance);
296 if ((type_instance != NULL) && (type_instance[0] != 0))
299 APPEND (type_instance);
301 assert (buffer_size > 0);
306 } /* int sensu_format_name2 */
308 static void in_place_replace_sensu_name_reserved(char *orig_name) /* {{{ */
310 int len=strlen(orig_name);
311 for (int i=0; i<len; i++) {
312 // some plugins like ipmi generate special characters in metric name
313 switch(orig_name[i]) {
314 case '(': orig_name[i] = '_'; break;
315 case ')': orig_name[i] = '_'; break;
316 case ' ': orig_name[i] = '_'; break;
317 case '"': orig_name[i] = '_'; break;
318 case '\'': orig_name[i] = '_'; break;
319 case '+': orig_name[i] = '_'; break;
322 } /* }}} char *replace_sensu_name_reserved */
324 static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
325 data_set_t const *ds,
326 value_list_t const *vl, size_t index,
327 gauge_t const *rates,
330 char name_buffer[5 * DATA_MAX_NAME_LEN];
331 char service_buffer[6 * DATA_MAX_NAME_LEN];
336 // First part of the JSON string
337 const char *part1 = "{\"name\": \"collectd\", \"type\": \"metric\"";
339 char *handlers_str = build_json_str_list("handlers", &(host->metric_handlers));
340 if (handlers_str == NULL) {
341 ERROR("write_sensu plugin: Unable to alloc memory");
345 // incorporate the handlers
346 if (strlen(handlers_str) == 0) {
348 ret_str = strdup(part1);
349 if (ret_str == NULL) {
350 ERROR("write_sensu plugin: Unable to alloc memory");
355 res = my_asprintf(&ret_str, "%s, %s", part1, handlers_str);
358 ERROR("write_sensu plugin: Unable to alloc memory");
363 // incorporate the plugin name information
364 res = my_asprintf(&temp_str, "%s, \"collectd_plugin\": \"%s\"", ret_str, vl->plugin);
367 ERROR("write_sensu plugin: Unable to alloc memory");
372 // incorporate the plugin type
373 res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type\": \"%s\"", ret_str, vl->type);
376 ERROR("write_sensu plugin: Unable to alloc memory");
381 // incorporate the plugin instance if any
382 if (vl->plugin_instance[0] != 0) {
383 res = my_asprintf(&temp_str, "%s, \"collectd_plugin_instance\": \"%s\"", ret_str, vl->plugin_instance);
386 ERROR("write_sensu plugin: Unable to alloc memory");
392 // incorporate the plugin type instance if any
393 if (vl->type_instance[0] != 0) {
394 res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type_instance\": \"%s\"", ret_str, vl->type_instance);
397 ERROR("write_sensu plugin: Unable to alloc memory");
403 // incorporate the data source type
404 if ((ds->ds[index].type != DS_TYPE_GAUGE) && (rates != NULL)) {
405 char ds_type[DATA_MAX_NAME_LEN];
406 ssnprintf (ds_type, sizeof (ds_type), "%s:rate", DS_TYPE_TO_STRING(ds->ds[index].type));
407 res = my_asprintf(&temp_str, "%s, \"collectd_data_source_type\": \"%s\"", ret_str, ds_type);
410 ERROR("write_sensu plugin: Unable to alloc memory");
415 res = my_asprintf(&temp_str, "%s, \"collectd_data_source_type\": \"%s\"", ret_str, DS_TYPE_TO_STRING(ds->ds[index].type));
418 ERROR("write_sensu plugin: Unable to alloc memory");
424 // incorporate the data source name
425 res = my_asprintf(&temp_str, "%s, \"collectd_data_source_name\": \"%s\"", ret_str, ds->ds[index].name);
428 ERROR("write_sensu plugin: Unable to alloc memory");
433 // incorporate the data source index
435 char ds_index[DATA_MAX_NAME_LEN];
436 ssnprintf (ds_index, sizeof (ds_index), "%zu", index);
437 res = my_asprintf(&temp_str, "%s, \"collectd_data_source_index\": %s", ret_str, ds_index);
440 ERROR("write_sensu plugin: Unable to alloc memory");
446 // add key value attributes from config if any
447 for (size_t i = 0; i < sensu_attrs_num; i += 2) {
448 res = my_asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, sensu_attrs[i], sensu_attrs[i+1]);
451 ERROR("write_sensu plugin: Unable to alloc memory");
457 // incorporate sensu tags from config if any
458 if ((sensu_tags != NULL) && (strlen(sensu_tags) != 0)) {
459 res = my_asprintf(&temp_str, "%s, %s", ret_str, sensu_tags);
462 ERROR("write_sensu plugin: Unable to alloc memory");
468 // calculate the value and set to a string
469 if (ds->ds[index].type == DS_TYPE_GAUGE) {
470 res = my_asprintf(&value_str, GAUGE_FORMAT, vl->values[index].gauge);
473 ERROR("write_sensu plugin: Unable to alloc memory");
476 } else if (rates != NULL) {
477 res = my_asprintf(&value_str, GAUGE_FORMAT, rates[index]);
480 ERROR("write_sensu plugin: Unable to alloc memory");
484 if (ds->ds[index].type == DS_TYPE_DERIVE) {
485 res = my_asprintf(&value_str, "%"PRIi64, vl->values[index].derive);
488 ERROR("write_sensu plugin: Unable to alloc memory");
492 else if (ds->ds[index].type == DS_TYPE_ABSOLUTE) {
493 res = my_asprintf(&value_str, "%"PRIu64, vl->values[index].absolute);
496 ERROR("write_sensu plugin: Unable to alloc memory");
501 res = my_asprintf(&value_str, "%llu", vl->values[index].counter);
504 ERROR("write_sensu plugin: Unable to alloc memory");
510 // Generate the full service name
511 sensu_format_name2(name_buffer, sizeof(name_buffer),
512 vl->host, vl->plugin, vl->plugin_instance,
513 vl->type, vl->type_instance, host->separator);
514 if (host->always_append_ds || (ds->ds_num > 1)) {
515 if (host->event_service_prefix == NULL)
516 ssnprintf(service_buffer, sizeof(service_buffer), "%s.%s",
517 name_buffer, ds->ds[index].name);
519 ssnprintf(service_buffer, sizeof(service_buffer), "%s%s.%s",
520 host->event_service_prefix, name_buffer, ds->ds[index].name);
522 if (host->event_service_prefix == NULL)
523 sstrncpy(service_buffer, name_buffer, sizeof(service_buffer));
525 ssnprintf(service_buffer, sizeof(service_buffer), "%s%s",
526 host->event_service_prefix, name_buffer);
529 // Replace collectd sensor name reserved characters so that time series DB is happy
530 in_place_replace_sensu_name_reserved(service_buffer);
532 // finalize the buffer by setting the output and closing curly bracket
533 res = my_asprintf(&temp_str, "%s, \"output\": \"%s %s %ld\"}\n", ret_str, service_buffer, value_str, CDTIME_T_TO_TIME_T(vl->time));
537 ERROR("write_sensu plugin: Unable to alloc memory");
542 DEBUG("write_sensu plugin: Successfully created json for metric: "
543 "host = \"%s\", service = \"%s\"",
544 vl->host, service_buffer);
546 } /* }}} char *sensu_value_to_json */
549 * Uses replace_str2() implementation from
550 * http://creativeandcritical.net/str-replace-c/
551 * copyright (c) Laird Shaw, under public domain.
553 static char *replace_str(const char *str, const char *old, /* {{{ */
558 size_t oldlen = strlen(old);
559 size_t count = strlen(new);
561 size_t newlen = count;
562 int samesize = (oldlen == newlen);
565 for (count = 0, p = str; (q = strstr(p, old)) != NULL; p = q + oldlen)
567 /* This is undefined if p - str > PTRDIFF_MAX */
568 retlen = p - str + strlen(p) + count * (newlen - oldlen);
570 retlen = strlen(str);
572 ret = calloc(1, retlen + 1);
575 // added to original: not optimized, but keeps valgrind happy.
580 /* If the old and new strings are different lengths - in other
581 * words we have already iterated through with strstr above,
582 * and thus we know how many times we need to call it - then we
583 * can avoid the final (potentially lengthy) call to strstr,
584 * which we already know is going to return NULL, by
585 * decrementing and checking count.
587 if (!samesize && !count--)
589 /* Otherwise i.e. when the old and new strings are the same
590 * length, and we don't know how many times to call strstr,
591 * we must check for a NULL return here (we check it in any
592 * event, to avoid further conditions, and because there's
593 * no harm done with the check even when the old and new
594 * strings are different lengths).
596 if ((q = strstr(p, old)) == NULL)
598 /* This is undefined if q - p > PTRDIFF_MAX */
602 memcpy(r, new, newlen);
606 strncpy(r, p, strlen(p));
609 } /* }}} char *replace_str */
611 static char *replace_json_reserved(const char *message) /* {{{ */
613 char *msg = replace_str(message, "\\", "\\\\");
615 ERROR("write_sensu plugin: Unable to alloc memory");
618 char *tmp = replace_str(msg, "\"", "\\\"");
621 ERROR("write_sensu plugin: Unable to alloc memory");
624 msg = replace_str(tmp, "\n", "\\\n");
627 ERROR("write_sensu plugin: Unable to alloc memory");
631 } /* }}} char *replace_json_reserved */
633 static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
634 notification_t const *n)
636 char service_buffer[6 * DATA_MAX_NAME_LEN];
637 char const *severity;
643 // add the severity/status
644 switch (n->severity) {
650 severity = "WARNING";
654 severity = "CRITICAL";
658 severity = "UNKNOWN";
661 res = my_asprintf(&temp_str, "{\"status\": %d", status);
663 ERROR("write_sensu plugin: Unable to alloc memory");
668 // incorporate the timestamp
669 res = my_asprintf(&temp_str, "%s, \"timestamp\": %ld", ret_str, CDTIME_T_TO_TIME_T(n->time));
672 ERROR("write_sensu plugin: Unable to alloc memory");
677 char *handlers_str = build_json_str_list("handlers", &(host->notification_handlers));
678 if (handlers_str == NULL) {
679 ERROR("write_sensu plugin: Unable to alloc memory");
683 // incorporate the handlers
684 if (strlen(handlers_str) != 0) {
685 res = my_asprintf(&temp_str, "%s, %s", ret_str, handlers_str);
689 ERROR("write_sensu plugin: Unable to alloc memory");
697 // incorporate the plugin name information if any
698 if (n->plugin[0] != 0) {
699 res = my_asprintf(&temp_str, "%s, \"collectd_plugin\": \"%s\"", ret_str, n->plugin);
702 ERROR("write_sensu plugin: Unable to alloc memory");
708 // incorporate the plugin type if any
709 if (n->type[0] != 0) {
710 res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type\": \"%s\"", ret_str, n->type);
713 ERROR("write_sensu plugin: Unable to alloc memory");
719 // incorporate the plugin instance if any
720 if (n->plugin_instance[0] != 0) {
721 res = my_asprintf(&temp_str, "%s, \"collectd_plugin_instance\": \"%s\"", ret_str, n->plugin_instance);
724 ERROR("write_sensu plugin: Unable to alloc memory");
730 // incorporate the plugin type instance if any
731 if (n->type_instance[0] != 0) {
732 res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type_instance\": \"%s\"", ret_str, n->type_instance);
735 ERROR("write_sensu plugin: Unable to alloc memory");
741 // add key value attributes from config if any
742 for (i = 0; i < sensu_attrs_num; i += 2) {
743 res = my_asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, sensu_attrs[i], sensu_attrs[i+1]);
746 ERROR("write_sensu plugin: Unable to alloc memory");
752 // incorporate sensu tags from config if any
753 if ((sensu_tags != NULL) && (strlen(sensu_tags) != 0)) {
754 res = my_asprintf(&temp_str, "%s, %s", ret_str, sensu_tags);
757 ERROR("write_sensu plugin: Unable to alloc memory");
763 // incorporate the service name
764 sensu_format_name2(service_buffer, sizeof(service_buffer),
765 /* host */ "", n->plugin, n->plugin_instance,
766 n->type, n->type_instance, host->separator);
767 // replace sensu event name chars that are considered illegal
768 in_place_replace_sensu_name_reserved(service_buffer);
769 res = my_asprintf(&temp_str, "%s, \"name\": \"%s\"", ret_str, &service_buffer[1]);
772 ERROR("write_sensu plugin: Unable to alloc memory");
777 // incorporate the check output
778 if (n->message[0] != 0) {
779 char *msg = replace_json_reserved(n->message);
781 ERROR("write_sensu plugin: Unable to alloc memory");
785 res = my_asprintf(&temp_str, "%s, \"output\": \"%s - %s\"", ret_str, severity, msg);
789 ERROR("write_sensu plugin: Unable to alloc memory");
795 // Pull in values from threshold and add extra attributes
796 for (notification_meta_t *meta = n->meta; meta != NULL; meta = meta->next) {
797 if (strcasecmp("CurrentValue", meta->name) == 0 && meta->type == NM_TYPE_DOUBLE) {
798 res = my_asprintf(&temp_str, "%s, \"current_value\": \"%.8f\"", ret_str, meta->nm_value.nm_double);
801 ERROR("write_sensu plugin: Unable to alloc memory");
806 if (meta->type == NM_TYPE_STRING) {
807 res = my_asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, meta->name, meta->nm_value.nm_string);
810 ERROR("write_sensu plugin: Unable to alloc memory");
817 // close the curly bracket
818 res = my_asprintf(&temp_str, "%s}\n", ret_str);
821 ERROR("write_sensu plugin: Unable to alloc memory");
826 DEBUG("write_sensu plugin: Successfully created JSON for notification: "
827 "host = \"%s\", service = \"%s\", state = \"%s\"",
828 n->host, service_buffer, severity);
830 } /* }}} char *sensu_notification_to_json */
832 static int sensu_send_msg(struct sensu_host *host, const char *msg) /* {{{ */
837 status = sensu_connect(host);
841 buffer_len = strlen(msg);
843 status = (int) swrite(host->s, msg, buffer_len);
844 sensu_close_socket(host);
848 ERROR("write_sensu plugin: Sending to Sensu at %s:%s failed: %s",
849 (host->node != NULL) ? host->node : SENSU_HOST,
850 (host->service != NULL) ? host->service : SENSU_PORT,
851 sstrerror(errno, errbuf, sizeof(errbuf)));
856 } /* }}} int sensu_send_msg */
859 static int sensu_send(struct sensu_host *host, char const *msg) /* {{{ */
863 status = sensu_send_msg(host, msg);
865 host->flags &= ~F_READY;
866 if (host->res != NULL) {
867 freeaddrinfo(host->res);
874 } /* }}} int sensu_send */
877 static int sensu_write(const data_set_t *ds, /* {{{ */
878 const value_list_t *vl,
882 int statuses[vl->values_len];
883 struct sensu_host *host = ud->data;
884 gauge_t *rates = NULL;
887 pthread_mutex_lock(&host->lock);
888 memset(statuses, 0, vl->values_len * sizeof(*statuses));
890 if (host->store_rates) {
891 rates = uc_get_rate(ds, vl);
893 ERROR("write_sensu plugin: uc_get_rate failed.");
894 pthread_mutex_unlock(&host->lock);
898 for (size_t i = 0; i < vl->values_len; i++) {
899 msg = sensu_value_to_json(host, ds, vl, (int) i, rates, statuses[i]);
902 pthread_mutex_unlock(&host->lock);
905 status = sensu_send(host, msg);
908 ERROR("write_sensu plugin: sensu_send failed with status %i", status);
909 pthread_mutex_unlock(&host->lock);
915 pthread_mutex_unlock(&host->lock);
917 } /* }}} int sensu_write */
919 static int sensu_notification(const notification_t *n, user_data_t *ud) /* {{{ */
922 struct sensu_host *host = ud->data;
925 pthread_mutex_lock(&host->lock);
927 msg = sensu_notification_to_json(host, n);
929 pthread_mutex_unlock(&host->lock);
933 status = sensu_send(host, msg);
936 ERROR("write_sensu plugin: sensu_send failed with status %i", status);
937 pthread_mutex_unlock(&host->lock);
940 } /* }}} int sensu_notification */
942 static void sensu_free(void *p) /* {{{ */
944 struct sensu_host *host = p;
949 pthread_mutex_lock(&host->lock);
951 host->reference_count--;
952 if (host->reference_count > 0) {
953 pthread_mutex_unlock(&host->lock);
957 sensu_close_socket(host);
958 if (host->res != NULL) {
959 freeaddrinfo(host->res);
962 sfree(host->service);
963 sfree(host->event_service_prefix);
966 sfree(host->separator);
967 free_str_list(&(host->metric_handlers));
968 free_str_list(&(host->notification_handlers));
969 pthread_mutex_destroy(&host->lock);
971 } /* }}} void sensu_free */
974 static int sensu_config_node(oconfig_item_t *ci) /* {{{ */
976 struct sensu_host *host = NULL;
978 oconfig_item_t *child;
979 char callback_name[DATA_MAX_NAME_LEN];
982 if ((host = calloc(1, sizeof(*host))) == NULL) {
983 ERROR("write_sensu plugin: calloc failed.");
986 pthread_mutex_init(&host->lock, NULL);
987 host->reference_count = 1;
989 host->service = NULL;
990 host->notifications = 0;
992 host->store_rates = 1;
993 host->always_append_ds = 0;
994 host->metric_handlers.nb_strs = 0;
995 host->metric_handlers.strs = NULL;
996 host->notification_handlers.nb_strs = 0;
997 host->notification_handlers.strs = NULL;
998 host->separator = strdup("/");
999 if (host->separator == NULL) {
1000 ERROR("write_sensu plugin: Unable to alloc memory");
1005 status = cf_util_get_string(ci, &host->name);
1007 WARNING("write_sensu plugin: Required host name is missing.");
1012 for (int i = 0; i < ci->children_num; i++) {
1013 child = &ci->children[i];
1016 if (strcasecmp("Host", child->key) == 0) {
1017 status = cf_util_get_string(child, &host->node);
1020 } else if (strcasecmp("Notifications", child->key) == 0) {
1021 status = cf_util_get_boolean(child, &host->notifications);
1024 } else if (strcasecmp("Metrics", child->key) == 0) {
1025 status = cf_util_get_boolean(child, &host->metrics);
1028 } else if (strcasecmp("EventServicePrefix", child->key) == 0) {
1029 status = cf_util_get_string(child, &host->event_service_prefix);
1032 } else if (strcasecmp("Separator", child->key) == 0) {
1033 status = cf_util_get_string(child, &host->separator);
1036 } else if (strcasecmp("MetricHandler", child->key) == 0) {
1037 char *temp_str = NULL;
1038 status = cf_util_get_string(child, &temp_str);
1041 status = add_str_to_list(&(host->metric_handlers), temp_str);
1045 } else if (strcasecmp("NotificationHandler", child->key) == 0) {
1046 char *temp_str = NULL;
1047 status = cf_util_get_string(child, &temp_str);
1050 status = add_str_to_list(&(host->notification_handlers), temp_str);
1054 } else if (strcasecmp("Port", child->key) == 0) {
1055 status = cf_util_get_service(child, &host->service);
1057 ERROR("write_sensu plugin: Invalid argument "
1058 "configured for the \"Port\" "
1062 } else if (strcasecmp("StoreRates", child->key) == 0) {
1063 status = cf_util_get_boolean(child, &host->store_rates);
1066 } else if (strcasecmp("AlwaysAppendDS", child->key) == 0) {
1067 status = cf_util_get_boolean(child,
1068 &host->always_append_ds);
1072 WARNING("write_sensu plugin: ignoring unknown config "
1073 "option: \"%s\"", child->key);
1081 if (host->metrics && (host->metric_handlers.nb_strs == 0)) {
1083 WARNING("write_sensu plugin: metrics enabled but no MetricHandler defined. Giving up.");
1087 if (host->notifications && (host->notification_handlers.nb_strs == 0)) {
1089 WARNING("write_sensu plugin: notifications enabled but no NotificationHandler defined. Giving up.");
1093 if ((host->notification_handlers.nb_strs > 0) && (host->notifications == 0)) {
1094 WARNING("write_sensu plugin: NotificationHandler given so forcing notifications to be enabled");
1095 host->notifications = 1;
1098 if ((host->metric_handlers.nb_strs > 0) && (host->metrics == 0)) {
1099 WARNING("write_sensu plugin: MetricHandler given so forcing metrics to be enabled");
1103 if (!(host->notifications || host->metrics)) {
1104 WARNING("write_sensu plugin: neither metrics nor notifications enabled. Giving up.");
1109 ssnprintf(callback_name, sizeof(callback_name), "write_sensu/%s", host->name);
1111 ud.free_func = sensu_free;
1113 pthread_mutex_lock(&host->lock);
1115 if (host->metrics) {
1116 status = plugin_register_write(callback_name, sensu_write, &ud);
1118 WARNING("write_sensu plugin: plugin_register_write (\"%s\") "
1119 "failed with status %i.",
1120 callback_name, status);
1122 host->reference_count++;
1125 if (host->notifications) {
1126 status = plugin_register_notification(callback_name, sensu_notification, &ud);
1128 WARNING("write_sensu plugin: plugin_register_notification (\"%s\") "
1129 "failed with status %i.",
1130 callback_name, status);
1132 host->reference_count++;
1135 if (host->reference_count <= 1) {
1136 /* Both callbacks failed => free memory.
1137 * We need to unlock here, because sensu_free() will lock.
1138 * This is not a race condition, because we're the only one
1139 * holding a reference. */
1140 pthread_mutex_unlock(&host->lock);
1145 host->reference_count--;
1146 pthread_mutex_unlock(&host->lock);
1149 } /* }}} int sensu_config_node */
1151 static int sensu_config(oconfig_item_t *ci) /* {{{ */
1153 oconfig_item_t *child;
1155 struct str_list sensu_tags_arr;
1157 sensu_tags_arr.nb_strs = 0;
1158 sensu_tags_arr.strs = NULL;
1160 for (int i = 0; i < ci->children_num; i++) {
1161 child = &ci->children[i];
1163 if (strcasecmp("Node", child->key) == 0) {
1164 sensu_config_node(child);
1165 } else if (strcasecmp(child->key, "attribute") == 0) {
1166 if (child->values_num != 2) {
1167 WARNING("sensu attributes need both a key and a value.");
1170 if (child->values[0].type != OCONFIG_TYPE_STRING ||
1171 child->values[1].type != OCONFIG_TYPE_STRING) {
1172 WARNING("sensu attribute needs string arguments.");
1176 strarray_add(&sensu_attrs, &sensu_attrs_num, child->values[0].value.string);
1177 strarray_add(&sensu_attrs, &sensu_attrs_num, child->values[1].value.string);
1179 DEBUG("write_sensu plugin: New attribute: %s => %s",
1180 child->values[0].value.string,
1181 child->values[1].value.string);
1182 } else if (strcasecmp(child->key, "tag") == 0) {
1184 status = cf_util_get_string(child, &tmp);
1188 status = add_str_to_list(&sensu_tags_arr, tmp);
1192 DEBUG("write_sensu plugin: Got tag: %s", tmp);
1194 WARNING("write_sensu plugin: Ignoring unknown "
1195 "configuration option \"%s\" at top level.",
1199 if (sensu_tags_arr.nb_strs > 0) {
1201 sensu_tags = build_json_str_list("tags", &sensu_tags_arr);
1202 free_str_list(&sensu_tags_arr);
1203 if (sensu_tags == NULL) {
1204 ERROR("write_sensu plugin: Unable to alloc memory");
1209 } /* }}} int sensu_config */
1211 void module_register(void)
1213 plugin_register_complex_config("write_sensu", sensu_config);
1216 /* vim: set sw=8 sts=8 ts=8 noet : */