3 #define RRDVAR_MAX_LENGTH 1024
5 struct health_options {
6 const char *health_default_exec;
7 const char *health_default_recipient;
8 const char *log_filename;
12 static struct health_options health = {
13 .health_default_exec = PLUGINS_DIR "/alarm-notify.sh",
14 .health_default_recipient = "root",
15 .log_filename = VARLIB_DIR "/health/alarm_log.db",
19 int health_enabled = 1;
21 // ----------------------------------------------------------------------------
22 // health alarm log load/save
23 // no need for locking - only one thread is reading / writing the alarms log
25 static inline int health_alarm_log_open(void) {
27 fclose(health.log_fp);
29 health.log_fp = fopen(health.log_filename, "a");
32 if (setvbuf(health.log_fp, NULL, _IOLBF, 0) != 0)
33 error("Cannot set line buffering on health log file.");
37 error("Cannot open health log file '%s'. Health data will be lost in case of netdata or server crash.", health.log_filename);
41 static inline void health_alarm_log_close(void) {
43 fclose(health.log_fp);
48 static inline void health_log_recreate(void) {
49 if(health.log_fp != NULL) {
50 health_alarm_log_close();
52 // open it with truncate
53 health.log_fp = fopen(health.log_filename, "w");
54 if(health.log_fp) fclose(health.log_fp);
55 else error("Cannot truncate health log '%s'", health.log_filename);
59 health_alarm_log_open();
63 static inline void health_alarm_log_save(RRDHOST *host, ALARM_ENTRY *ae) {
67 /* if(likely(health.log_fp)) {
68 if(unlikely(fprintf(health.log_fp, "A\t%s\t%08x\t%08x\t%08x\t%08x\t%08x\t%08x\t%s\t%s\t%s\t%s\t%s\t%08x\n",
74 (uint32_t)ae->duration,
75 (uint32_t)ae->non_clear_duration,
76 (uint32_t)ae->exec_run_timestamp,
83 error("Health: failed to save alarm log entry. Health data may be lost in case of abnormal restart.");
88 static inline void health_alarm_log_load(RRDHOST *host) {
93 // ----------------------------------------------------------------------------
94 // health alarm log management
96 static inline void health_alarm_log(RRDHOST *host,
97 uint32_t alarm_id, uint32_t alarm_event_id,
99 const char *name, const char *chart, const char *family,
100 const char *exec, const char *recipient, time_t duration,
101 calculated_number old_value, calculated_number new_value,
102 int old_status, int new_status,
108 debug(D_HEALTH, "Health adding alarm log entry with id: %u", host->health_log.next_log_id);
110 ALARM_ENTRY *ae = callocz(1, sizeof(ALARM_ENTRY));
111 ae->name = strdupz(name);
112 ae->hash_name = simple_hash(ae->name);
115 ae->chart = strdupz(chart);
116 ae->hash_chart = simple_hash(ae->chart);
120 ae->family = strdupz(family);
122 if(exec) ae->exec = strdupz(exec);
123 if(recipient) ae->recipient = strdupz(recipient);
124 if(source) ae->source = strdupz(source);
125 if(units) ae->units = strdupz(units);
126 if(info) ae->info = strdupz(info);
128 ae->unique_id = host->health_log.next_log_id++;
129 ae->alarm_id = alarm_id;
130 ae->alarm_event_id = alarm_event_id;
132 ae->old_value = old_value;
133 ae->new_value = new_value;
134 ae->old_status = old_status;
135 ae->new_status = new_status;
136 ae->duration = duration;
138 ae->delay_up_to_timestamp = when + delay;
140 if(ae->old_status == RRDCALC_STATUS_WARNING || ae->old_status == RRDCALC_STATUS_CRITICAL)
141 ae->non_clear_duration += ae->duration;
144 pthread_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
145 ae->next = host->health_log.alarms;
146 host->health_log.alarms = ae;
147 host->health_log.count++;
148 pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
150 // match previous alarms
151 pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
153 for(t = host->health_log.alarms ; t ; t = t->next) {
154 if(t != ae && t->alarm_id == ae->alarm_id) {
155 if(!(t->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED) && !t->updated_by_id) {
156 t->notifications |= HEALTH_ENTRY_NOTIFICATIONS_UPDATED;
157 t->updated_by_id = ae->unique_id;
158 ae->updates_id = t->unique_id;
160 if((t->new_status == RRDCALC_STATUS_WARNING || t->new_status == RRDCALC_STATUS_CRITICAL) &&
161 (t->old_status == RRDCALC_STATUS_WARNING || t->old_status == RRDCALC_STATUS_CRITICAL))
162 ae->non_clear_duration += t->non_clear_duration;
164 health_alarm_log_save(host, t);
167 // no need to continue
172 pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
174 health_alarm_log_save(host, ae);
177 // ----------------------------------------------------------------------------
180 static inline int rrdvar_fix_name(char *variable) {
183 if (!isalnum(*variable) && *variable != '.' && *variable != '_') {
194 int rrdvar_compare(void* a, void* b) {
195 if(((RRDVAR *)a)->hash < ((RRDVAR *)b)->hash) return -1;
196 else if(((RRDVAR *)a)->hash > ((RRDVAR *)b)->hash) return 1;
197 else return strcmp(((RRDVAR *)a)->name, ((RRDVAR *)b)->name);
200 static inline RRDVAR *rrdvar_index_add(avl_tree_lock *tree, RRDVAR *rv) {
201 RRDVAR *ret = (RRDVAR *)avl_insert_lock(tree, (avl *)(rv));
203 debug(D_VARIABLES, "Request to insert RRDVAR '%s' into index failed. Already exists.", rv->name);
208 static inline RRDVAR *rrdvar_index_del(avl_tree_lock *tree, RRDVAR *rv) {
209 RRDVAR *ret = (RRDVAR *)avl_remove_lock(tree, (avl *)(rv));
211 error("Request to remove RRDVAR '%s' from index failed. Not Found.", rv->name);
216 static inline RRDVAR *rrdvar_index_find(avl_tree_lock *tree, const char *name, uint32_t hash) {
218 tmp.name = (char *)name;
219 tmp.hash = (hash)?hash:simple_hash(tmp.name);
221 return (RRDVAR *)avl_search_lock(tree, (avl *)&tmp);
224 static inline void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv) {
230 rrdvar_index_del(tree, rv);
236 static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, int type, calculated_number *value) {
237 char *variable = strdupz(name);
238 rrdvar_fix_name(variable);
239 uint32_t hash = simple_hash(variable);
241 RRDVAR *rv = rrdvar_index_find(tree, variable, hash);
243 debug(D_VARIABLES, "Variable '%s' not found in scope '%s'. Creating a new one.", variable, scope);
245 rv = callocz(1, sizeof(RRDVAR));
251 RRDVAR *ret = rrdvar_index_add(tree, rv);
252 if(unlikely(ret != rv)) {
253 debug(D_VARIABLES, "Variable '%s' in scope '%s' already exists", variable, scope);
254 rrdvar_free(NULL, NULL, rv);
258 debug(D_VARIABLES, "Variable '%s' created in scope '%s'", variable, scope);
269 // ----------------------------------------------------------------------------
272 calculated_number rrdvar2number(RRDVAR *rv) {
274 case RRDVAR_TYPE_CALCULATED: {
275 calculated_number *n = (calculated_number *)rv->value;
279 case RRDVAR_TYPE_TIME_T: {
280 time_t *n = (time_t *)rv->value;
284 case RRDVAR_TYPE_COLLECTED: {
285 collected_number *n = (collected_number *)rv->value;
289 case RRDVAR_TYPE_TOTAL: {
290 total_number *n = (total_number *)rv->value;
294 case RRDVAR_TYPE_INT: {
295 int *n = (int *)rv->value;
300 error("I don't know how to convert RRDVAR type %d to calculated_number", rv->type);
305 void dump_variable(void *data) {
306 RRDVAR *rv = (RRDVAR *)data;
307 debug(D_HEALTH, "%50s : %20.5Lf", rv->name, rrdvar2number(rv));
310 int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result) {
311 RRDSET *st = rc->rrdset;
316 rv = rrdvar_index_find(&st->variables_root_index, variable, hash);
318 *result = rrdvar2number(rv);
322 rv = rrdvar_index_find(&st->rrdfamily->variables_root_index, variable, hash);
324 *result = rrdvar2number(rv);
328 rv = rrdvar_index_find(&st->rrdhost->variables_root_index, variable, hash);
330 *result = rrdvar2number(rv);
334 debug(D_HEALTH, "Available local chart '%s' variables:", st->id);
335 avl_traverse_lock(&st->variables_root_index, dump_variable);
337 debug(D_HEALTH, "Available family '%s' variables:", st->rrdfamily->family);
338 avl_traverse_lock(&st->rrdfamily->variables_root_index, dump_variable);
340 debug(D_HEALTH, "Available host '%s' variables:", st->rrdhost->hostname);
341 avl_traverse_lock(&st->rrdhost->variables_root_index, dump_variable);
346 // ----------------------------------------------------------------------------
347 // RRDSETVAR management
349 RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, int type, void *value, uint32_t options) {
350 debug(D_VARIABLES, "RRDVARSET create for chart id '%s' name '%s' with variable name '%s'", st->id, st->name, variable);
351 RRDSETVAR *rs = (RRDSETVAR *)callocz(1, sizeof(RRDSETVAR));
353 char buffer[RRDVAR_MAX_LENGTH + 1];
354 snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, variable);
355 rs->fullid = strdupz(buffer);
357 snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, variable);
358 rs->fullname = strdupz(buffer);
360 rs->variable = strdupz(variable);
364 rs->options = options;
367 rs->local = rrdvar_create_and_index("local", &st->variables_root_index, rs->variable, rs->type, rs->value);
368 rs->family = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullid, rs->type, rs->value);
369 rs->host = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullid, rs->type, rs->value);
370 rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value);
371 rs->host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value);
373 rs->next = st->variables;
379 void rrdsetvar_rename_all(RRDSET *st) {
380 debug(D_VARIABLES, "RRDSETVAR rename for chart id '%s' name '%s'", st->id, st->name);
382 // only these 2 can change name
386 char buffer[RRDVAR_MAX_LENGTH + 1];
387 RRDSETVAR *rs, *next = st->variables;
391 snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable);
393 if (strcmp(buffer, rs->fullname)) {
395 rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
396 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name);
399 rs->fullname = strdupz(st->name);
400 rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value);
401 rs->host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value);
405 rrdsetcalc_link_matching(st);
408 void rrdsetvar_free(RRDSETVAR *rs) {
409 RRDSET *st = rs->rrdset;
410 debug(D_VARIABLES, "RRDSETVAR free for chart id '%s' name '%s', variable '%s'", st->id, st->name, rs->variable);
412 rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local);
413 rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family);
414 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host);
415 rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
416 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name);
418 if(st->variables == rs) {
419 st->variables = rs->next;
423 for (t = st->variables; t && t->next != rs; t = t->next);
424 if(!t) error("RRDSETVAR '%s' not found in chart '%s' variables linked list", rs->fullname, st->id);
425 else t->next = rs->next;
434 // ----------------------------------------------------------------------------
435 // RRDDIMVAR management
437 #define RRDDIMVAR_ID_MAX 1024
439 RRDDIMVAR *rrddimvar_create(RRDDIM *rd, int type, const char *prefix, const char *suffix, void *value, uint32_t options) {
440 RRDSET *st = rd->rrdset;
442 debug(D_VARIABLES, "RRDDIMSET create for chart id '%s' name '%s', dimension id '%s', name '%s%s%s'", st->id, st->name, rd->id, (prefix)?prefix:"", rd->name, (suffix)?suffix:"");
444 if(!prefix) prefix = "";
445 if(!suffix) suffix = "";
447 char buffer[RRDDIMVAR_ID_MAX + 1];
448 RRDDIMVAR *rs = (RRDDIMVAR *)callocz(1, sizeof(RRDDIMVAR));
450 rs->prefix = strdupz(prefix);
451 rs->suffix = strdupz(suffix);
453 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->id, rs->suffix);
454 rs->id = strdupz(buffer);
456 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix);
457 rs->name = strdupz(buffer);
459 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->id, rs->id);
460 rs->fullidid = strdupz(buffer);
462 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->id, rs->name);
463 rs->fullidname = strdupz(buffer);
465 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->name, rs->id);
466 rs->fullnameid = strdupz(buffer);
468 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->name, rs->name);
469 rs->fullnamename = strdupz(buffer);
473 rs->options = options;
476 rs->local_id = rrdvar_create_and_index("local", &st->variables_root_index, rs->id, rs->type, rs->value);
477 rs->local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value);
479 rs->family_id = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->id, rs->type, rs->value);
480 rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->name, rs->type, rs->value);
482 rs->host_fullidid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidid, rs->type, rs->value);
483 rs->host_fullidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidname, rs->type, rs->value);
484 rs->host_fullnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnameid, rs->type, rs->value);
485 rs->host_fullnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnamename, rs->type, rs->value);
487 rs->next = rd->variables;
493 void rrddimvar_rename_all(RRDDIM *rd) {
494 RRDSET *st = rd->rrdset;
495 debug(D_VARIABLES, "RRDDIMSET rename for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
497 RRDDIMVAR *rs, *next = rd->variables;
501 if (strcmp(rd->name, rs->name)) {
502 char buffer[RRDDIMVAR_ID_MAX + 1];
506 rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name);
508 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix);
509 rs->name = strdupz(buffer);
510 rs->local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value);
512 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname);
513 freez(rs->fullidname);
514 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->name);
515 rs->fullidname = strdupz(buffer);
516 rs->host_fullidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index,
517 rs->fullidname, rs->type, rs->value);
520 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid);
521 freez(rs->fullnameid);
522 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->id);
523 rs->fullnameid = strdupz(buffer);
524 rs->host_fullnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index,
525 rs->fullnameid, rs->type, rs->value);
528 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename);
529 freez(rs->fullnamename);
530 snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->name);
531 rs->fullnamename = strdupz(buffer);
532 rs->host_fullnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index,
533 rs->fullnamename, rs->type, rs->value);
538 void rrddimvar_free(RRDDIMVAR *rs) {
539 RRDDIM *rd = rs->rrddim;
540 RRDSET *st = rd->rrdset;
541 debug(D_VARIABLES, "RRDDIMSET free for chart id '%s' name '%s', dimension id '%s', name '%s', prefix='%s', suffix='%s'", st->id, st->name, rd->id, rd->name, rs->prefix, rs->suffix);
543 rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_id);
544 rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name);
546 rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_id);
547 rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
549 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidid);
550 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname);
551 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid);
552 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename);
554 if(rd->variables == rs) {
555 debug(D_VARIABLES, "RRDDIMSET removing first entry for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
556 rd->variables = rs->next;
559 debug(D_VARIABLES, "RRDDIMSET removing non-first entry for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
561 for (t = rd->variables; t && t->next != rs; t = t->next) ;
562 if(!t) error("RRDDIMVAR '%s' not found in dimension '%s/%s' variables linked list", rs->name, st->id, rd->id);
563 else t->next = rs->next;
571 freez(rs->fullidname);
572 freez(rs->fullnameid);
573 freez(rs->fullnamename);
577 // ----------------------------------------------------------------------------
578 // RRDCALC management
580 static inline const char *rrdcalc_status2string(int status) {
582 case RRDCALC_STATUS_REMOVED:
585 case RRDCALC_STATUS_UNDEFINED:
588 case RRDCALC_STATUS_UNINITIALIZED:
589 return "UNINITIALIZED";
591 case RRDCALC_STATUS_CLEAR:
594 case RRDCALC_STATUS_RAISED:
597 case RRDCALC_STATUS_WARNING:
600 case RRDCALC_STATUS_CRITICAL:
604 error("Unknown alarm status %d", status);
609 static void rrdsetcalc_link(RRDSET *st, RRDCALC *rc) {
610 debug(D_HEALTH, "Health linking alarm '%s.%s' to chart '%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, st->id, st->rrdhost->hostname);
612 rc->last_status_change = time(NULL);
615 rc->rrdset_next = st->alarms;
616 rc->rrdset_prev = NULL;
619 rc->rrdset_next->rrdset_prev = rc;
623 if(rc->update_every < rc->rrdset->update_every) {
624 error("Health alarm '%s.%s' has update every %d, less than chart update every %d. Setting alarm update frequency to %d.", rc->rrdset->id, rc->name, rc->update_every, rc->rrdset->update_every, rc->rrdset->update_every);
625 rc->update_every = rc->rrdset->update_every;
628 if(!isnan(rc->green) && isnan(st->green)) {
629 debug(D_HEALTH, "Health alarm '%s.%s' green threshold set from %Lf to %Lf.", rc->rrdset->id, rc->name, rc->rrdset->green, rc->green);
630 st->green = rc->green;
633 if(!isnan(rc->red) && isnan(st->red)) {
634 debug(D_HEALTH, "Health alarm '%s.%s' red threshold set from %Lf to %Lf.", rc->rrdset->id, rc->name, rc->rrdset->red, rc->red);
638 rc->local = rrdvar_create_and_index("local", &st->variables_root_index, rc->name, RRDVAR_TYPE_CALCULATED, &rc->value);
639 rc->family = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rc->name, RRDVAR_TYPE_CALCULATED, &rc->value);
641 char fullname[RRDVAR_MAX_LENGTH + 1];
642 snprintfz(fullname, RRDVAR_MAX_LENGTH, "%s.%s", st->id, rc->name);
643 rc->hostid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, fullname, RRDVAR_TYPE_CALCULATED, &rc->value);
645 snprintfz(fullname, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rc->name);
646 rc->hostname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, fullname, RRDVAR_TYPE_CALCULATED, &rc->value);
648 if(!rc->units) rc->units = strdupz(st->units);
651 time_t now = time(NULL);
652 health_alarm_log(st->rrdhost, rc->id, rc->next_event_id++, now, rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, rc->recipient, now - rc->last_status_change, rc->old_value, rc->value, rc->status, RRDCALC_STATUS_UNINITIALIZED, rc->source, rc->units, rc->info, 0);
656 static inline int rrdcalc_is_matching_this_rrdset(RRDCALC *rc, RRDSET *st) {
657 if( (rc->hash_chart == st->hash && !strcmp(rc->chart, st->id)) ||
658 (rc->hash_chart == st->hash_name && !strcmp(rc->chart, st->name)))
664 // this has to be called while the RRDHOST is locked
665 inline void rrdsetcalc_link_matching(RRDSET *st) {
666 // debug(D_HEALTH, "find matching alarms for chart '%s'", st->id);
669 for(rc = st->rrdhost->alarms; rc ; rc = rc->next) {
670 if(unlikely(rc->rrdset))
673 if(unlikely(rrdcalc_is_matching_this_rrdset(rc, st)))
674 rrdsetcalc_link(st, rc);
678 // this has to be called while the RRDHOST is locked
679 inline void rrdsetcalc_unlink(RRDCALC *rc) {
680 RRDSET *st = rc->rrdset;
683 debug(D_HEALTH, "Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rc->chart?rc->chart:"NOCHART", rc->name);
684 error("Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rc->chart?rc->chart:"NOCHART", rc->name);
689 time_t now = time(NULL);
690 health_alarm_log(st->rrdhost, rc->id, rc->next_event_id++, now, rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, rc->recipient, now - rc->last_status_change, rc->old_value, rc->value, rc->status, RRDCALC_STATUS_REMOVED, rc->source, rc->units, rc->info, 0);
693 RRDHOST *host = st->rrdhost;
695 debug(D_HEALTH, "Health unlinking alarm '%s.%s' from chart '%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, st->id, host->hostname);
699 rc->rrdset_prev->rrdset_next = rc->rrdset_next;
702 rc->rrdset_next->rrdset_prev = rc->rrdset_prev;
705 st->alarms = rc->rrdset_next;
707 rc->rrdset_prev = rc->rrdset_next = NULL;
709 rrdvar_free(st->rrdhost, &st->variables_root_index, rc->local);
712 rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rc->family);
715 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rc->hostid);
718 rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rc->hostname);
723 // RRDCALC will remain in RRDHOST
724 // so that if the matching chart is found in the future
725 // it will be applied automatically
728 RRDCALC *rrdcalc_find(RRDSET *st, const char *name) {
730 uint32_t hash = simple_hash(name);
732 for( rc = st->alarms; rc ; rc = rc->rrdset_next ) {
733 if(unlikely(rc->hash == hash && !strcmp(rc->name, name)))
740 static inline int rrdcalc_exists(RRDHOST *host, const char *chart, const char *name, uint32_t hash_chart, uint32_t hash_name) {
743 if(unlikely(!chart)) {
744 error("attempt to find RRDCALC '%s' without giving a chart name", name);
748 if(unlikely(!hash_chart)) hash_chart = simple_hash(chart);
749 if(unlikely(!hash_name)) hash_name = simple_hash(name);
751 // make sure it does not already exist
752 for(rc = host->alarms; rc ; rc = rc->next) {
753 if (unlikely(rc->chart && rc->hash == hash_name && rc->hash_chart == hash_chart && !strcmp(name, rc->name) && !strcmp(chart, rc->chart))) {
754 debug(D_HEALTH, "Health alarm '%s.%s' already exists in host '%s'.", chart, name, host->hostname);
755 error("Health alarm '%s.%s' already exists in host '%s'.", chart, name, host->hostname);
763 static inline uint32_t rrdcalc_get_unique_id(RRDHOST *host, const char *chart, const char *name, uint32_t *next_event_id) {
765 uint32_t hash_chart = simple_hash(chart);
766 uint32_t hash_name = simple_hash(name);
768 // re-use old IDs, by looking them up in the alarm log
770 for(ae = host->health_log.alarms; ae ;ae = ae->next) {
771 if(unlikely(ae->hash_name == hash_name && ae->hash_chart == hash_chart && !strcmp(name, ae->name) && !strcmp(chart, ae->chart))) {
772 if(next_event_id) *next_event_id = ae->alarm_event_id + 1;
778 return host->health_log.next_alarm_id++;
781 static inline void rrdcalc_create_part2(RRDHOST *host, RRDCALC *rc) {
782 rrdhost_check_rdlock(host);
784 if(rc->calculation) {
785 rc->calculation->status = &rc->status;
786 rc->calculation->this = &rc->value;
787 rc->calculation->after = &rc->db_after;
788 rc->calculation->before = &rc->db_before;
789 rc->calculation->rrdcalc = rc;
793 rc->warning->status = &rc->status;
794 rc->warning->this = &rc->value;
795 rc->warning->after = &rc->db_after;
796 rc->warning->before = &rc->db_before;
797 rc->warning->rrdcalc = rc;
801 rc->critical->status = &rc->status;
802 rc->critical->this = &rc->value;
803 rc->critical->after = &rc->db_after;
804 rc->critical->before = &rc->db_before;
805 rc->critical->rrdcalc = rc;
808 // link it to the host
809 if(likely(host->alarms)) {
812 for(t = host->alarms; t && t->next ; t = t->next) ;
819 // link it to its chart
821 for(st = host->rrdset_root; st ; st = st->next) {
822 if(rrdcalc_is_matching_this_rrdset(rc, st)) {
823 rrdsetcalc_link(st, rc);
829 static inline RRDCALC *rrdcalc_create(RRDHOST *host, RRDCALCTEMPLATE *rt, const char *chart) {
831 debug(D_HEALTH, "Health creating dynamic alarm (from template) '%s.%s'", chart, rt->name);
833 if(rrdcalc_exists(host, chart, rt->name, 0, 0))
836 RRDCALC *rc = callocz(1, sizeof(RRDCALC));
837 rc->next_event_id = 1;
838 rc->id = rrdcalc_get_unique_id(host, chart, rt->name, &rc->next_event_id);
839 rc->name = strdupz(rt->name);
840 rc->hash = simple_hash(rc->name);
841 rc->chart = strdupz(chart);
842 rc->hash_chart = simple_hash(rc->chart);
844 if(rt->dimensions) rc->dimensions = strdupz(rt->dimensions);
846 rc->green = rt->green;
851 rc->delay_up_duration = rt->delay_up_duration;
852 rc->delay_down_duration = rt->delay_down_duration;
853 rc->delay_max_duration = rt->delay_max_duration;
854 rc->delay_multiplier = rt->delay_multiplier;
856 rc->group = rt->group;
857 rc->after = rt->after;
858 rc->before = rt->before;
859 rc->update_every = rt->update_every;
860 rc->options = rt->options;
862 if(rt->exec) rc->exec = strdupz(rt->exec);
863 if(rt->recipient) rc->recipient = strdupz(rt->recipient);
864 if(rt->source) rc->source = strdupz(rt->source);
865 if(rt->units) rc->units = strdupz(rt->units);
866 if(rt->info) rc->info = strdupz(rt->info);
868 if(rt->calculation) {
869 rc->calculation = expression_parse(rt->calculation->source, NULL, NULL);
871 error("Health alarm '%s.%s': failed to parse calculation expression '%s'", chart, rt->name, rt->calculation->source);
874 rc->warning = expression_parse(rt->warning->source, NULL, NULL);
876 error("Health alarm '%s.%s': failed to re-parse warning expression '%s'", chart, rt->name, rt->warning->source);
879 rc->critical = expression_parse(rt->critical->source, NULL, NULL);
881 error("Health alarm '%s.%s': failed to re-parse critical expression '%s'", chart, rt->name, rt->critical->source);
884 debug(D_HEALTH, "Health runtime added alarm '%s.%s': exec '%s', recipient '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s', delay up %d, delay down %d, delay max %d, delay_multiplier %f",
885 (rc->chart)?rc->chart:"NOCHART",
887 (rc->exec)?rc->exec:"DEFAULT",
888 (rc->recipient)?rc->recipient:"DEFAULT",
895 (rc->dimensions)?rc->dimensions:"NONE",
897 (rc->calculation)?rc->calculation->parsed_as:"NONE",
898 (rc->warning)?rc->warning->parsed_as:"NONE",
899 (rc->critical)?rc->critical->parsed_as:"NONE",
901 rc->delay_up_duration,
902 rc->delay_down_duration,
903 rc->delay_max_duration,
907 rrdcalc_create_part2(host, rc);
911 void rrdcalc_free(RRDHOST *host, RRDCALC *rc) {
914 debug(D_HEALTH, "Health removing alarm '%s.%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
916 // unlink it from RRDSET
917 if(rc->rrdset) rrdsetcalc_unlink(rc);
919 // unlink it from RRDHOST
920 if(unlikely(rc == host->alarms))
921 host->alarms = rc->next;
923 else if(likely(host->alarms)) {
924 RRDCALC *t, *last = host->alarms;
925 for(t = last->next; t && t != rc; last = t, t = t->next) ;
927 last->next = rc->next;
929 error("Cannot unlink alarm '%s.%s' from host '%s': not found", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
932 error("Cannot unlink unlink '%s.%s' from host '%s': This host does not have any calculations", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
934 expression_free(rc->calculation);
935 expression_free(rc->warning);
936 expression_free(rc->critical);
941 freez(rc->dimensions);
943 freez(rc->recipient);
950 // ----------------------------------------------------------------------------
951 // RRDCALCTEMPLATE management
953 void rrdcalctemplate_link_matching(RRDSET *st) {
956 for(rt = st->rrdhost->templates; rt ; rt = rt->next) {
957 if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context)) {
958 RRDCALC *rc = rrdcalc_create(st->rrdhost, rt, st->id);
960 error("Health tried to create alarm from template '%s', but it failed", rt->name);
962 #ifdef NETDATA_INTERNAL_CHECKS
963 else if(rc->rrdset != st)
964 error("Health alarm '%s.%s' should be linked to chart '%s', but it is not", rc->chart?rc->chart:"NOCHART", rc->name, st->id);
970 static inline void rrdcalctemplate_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
971 debug(D_HEALTH, "Health removing template '%s' of host '%s'", rt->name, host->hostname);
973 if(host->templates) {
974 if(host->templates == rt) {
975 host->templates = rt->next;
978 RRDCALCTEMPLATE *t, *last = host->templates;
979 for (t = last->next; t && t != rt; last = t, t = t->next ) ;
980 if(last && last->next == rt) {
981 last->next = rt->next;
985 error("Cannot find RRDCALCTEMPLATE '%s' linked in host '%s'", rt->name, host->hostname);
989 expression_free(rt->calculation);
990 expression_free(rt->warning);
991 expression_free(rt->critical);
995 freez(rt->recipient);
1000 freez(rt->dimensions);
1004 // ----------------------------------------------------------------------------
1005 // load health configuration
1007 #define HEALTH_CONF_MAX_LINE 4096
1009 #define HEALTH_ALARM_KEY "alarm"
1010 #define HEALTH_TEMPLATE_KEY "template"
1011 #define HEALTH_ON_KEY "on"
1012 #define HEALTH_LOOKUP_KEY "lookup"
1013 #define HEALTH_CALC_KEY "calc"
1014 #define HEALTH_EVERY_KEY "every"
1015 #define HEALTH_GREEN_KEY "green"
1016 #define HEALTH_RED_KEY "red"
1017 #define HEALTH_WARN_KEY "warn"
1018 #define HEALTH_CRIT_KEY "crit"
1019 #define HEALTH_EXEC_KEY "exec"
1020 #define HEALTH_RECIPIENT_KEY "to"
1021 #define HEALTH_UNITS_KEY "units"
1022 #define HEALTH_INFO_KEY "info"
1023 #define HEALTH_DELAY_KEY "delay"
1025 static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) {
1027 error("Health configuration for alarm '%s' does not have a chart", rc->name);
1031 if(!rc->update_every) {
1032 error("Health configuration for alarm '%s.%s' has no frequency (parameter 'every'). Ignoring it.", rc->chart?rc->chart:"NOCHART", rc->name);
1036 if(!RRDCALC_HAS_DB_LOOKUP(rc) && !rc->warning && !rc->critical) {
1037 error("Health configuration for alarm '%s.%s' is useless (no calculation, no warning and no critical evaluation)", rc->chart?rc->chart:"NOCHART", rc->name);
1041 if (rrdcalc_exists(host, rc->chart, rc->name, rc->hash_chart, rc->hash))
1044 rc->id = rrdcalc_get_unique_id(&localhost, rc->chart, rc->name, &rc->next_event_id);
1046 debug(D_HEALTH, "Health configuration adding alarm '%s.%s' (%u): exec '%s', recipient '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s', delay up %d, delay down %d, delay max %d, delay_multiplier %f",
1047 rc->chart?rc->chart:"NOCHART",
1050 (rc->exec)?rc->exec:"DEFAULT",
1051 (rc->recipient)?rc->recipient:"DEFAULT",
1058 (rc->dimensions)?rc->dimensions:"NONE",
1060 (rc->calculation)?rc->calculation->parsed_as:"NONE",
1061 (rc->warning)?rc->warning->parsed_as:"NONE",
1062 (rc->critical)?rc->critical->parsed_as:"NONE",
1064 rc->delay_up_duration,
1065 rc->delay_down_duration,
1066 rc->delay_max_duration,
1067 rc->delay_multiplier
1070 rrdcalc_create_part2(host, rc);
1074 static inline int rrdcalctemplate_add_template_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) {
1075 if(unlikely(!rt->context)) {
1076 error("Health configuration for template '%s' does not have a context", rt->name);
1080 if(unlikely(!rt->update_every)) {
1081 error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rt->name);
1085 if(unlikely(!RRDCALCTEMPLATE_HAS_CALCULATION(rt) && !rt->warning && !rt->critical)) {
1086 error("Health configuration for template '%s' is useless (no calculation, no warning and no critical evaluation)", rt->name);
1090 RRDCALCTEMPLATE *t, *last = NULL;
1091 for (t = host->templates; t ; last = t, t = t->next) {
1092 if(unlikely(t->hash_name == rt->hash_name && !strcmp(t->name, rt->name))) {
1093 error("Health configuration template '%s' already exists for host '%s'.", rt->name, host->hostname);
1098 debug(D_HEALTH, "Health configuration adding template '%s': context '%s', exec '%s', recipient '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s', delay up %d, delay down %d, delay max %d, delay_multiplier %f",
1100 (rt->context)?rt->context:"NONE",
1101 (rt->exec)?rt->exec:"DEFAULT",
1102 (rt->recipient)?rt->recipient:"DEFAULT",
1109 (rt->dimensions)?rt->dimensions:"NONE",
1111 (rt->calculation)?rt->calculation->parsed_as:"NONE",
1112 (rt->warning)?rt->warning->parsed_as:"NONE",
1113 (rt->critical)?rt->critical->parsed_as:"NONE",
1115 rt->delay_up_duration,
1116 rt->delay_down_duration,
1117 rt->delay_max_duration,
1118 rt->delay_multiplier
1125 rt->next = host->templates;
1126 host->templates = rt;
1132 static inline int health_parse_duration(char *string, int *result) {
1133 // make sure it is a number
1134 if(!*string || !(isdigit(*string) || *string == '+' || *string == '-')) {
1140 calculated_number n = strtold(string, &e);
1144 *result = (int) (n * 86400 * 365);
1147 *result = (int) (n * 86400 * 30);
1150 *result = (int) (n * 86400 * 7);
1153 *result = (int) (n * 86400);
1156 *result = (int) (n * 3600);
1159 *result = (int) (n * 60);
1164 *result = (int) (n);
1174 static inline int health_parse_delay(
1175 size_t line, const char *path, const char *file, char *string,
1176 int *delay_up_duration,
1177 int *delay_down_duration,
1178 int *delay_max_duration,
1179 float *delay_multiplier) {
1182 char given_down = 0;
1184 char given_multiplier = 0;
1190 while(*s && !isspace(*s)) s++;
1191 while(*s && isspace(*s)) *s++ = '\0';
1196 while(*s && !isspace(*s)) s++;
1197 while(*s && isspace(*s)) *s++ = '\0';
1199 if(!strcasecmp(key, "up")) {
1200 if (!health_parse_duration(value, delay_up_duration)) {
1201 error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
1202 line, path, file, value, key);
1206 else if(!strcasecmp(key, "down")) {
1207 if (!health_parse_duration(value, delay_down_duration)) {
1208 error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
1209 line, path, file, value, key);
1211 else given_down = 1;
1213 else if(!strcasecmp(key, "multiplier")) {
1214 *delay_multiplier = strtof(value, NULL);
1215 if(isnan(*delay_multiplier) || isinf(*delay_multiplier) || islessequal(*delay_multiplier, 0)) {
1216 error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
1217 line, path, file, value, key);
1219 else given_multiplier = 1;
1221 else if(!strcasecmp(key, "max")) {
1222 if (!health_parse_duration(value, delay_max_duration)) {
1223 error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
1224 line, path, file, value, key);
1229 error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
1230 line, path, file, key);
1235 *delay_up_duration = 0;
1238 *delay_down_duration = 0;
1240 if(!given_multiplier)
1241 *delay_multiplier = 1.0;
1244 if((*delay_max_duration) < (*delay_up_duration) * (*delay_multiplier))
1245 *delay_max_duration = (*delay_up_duration) * (*delay_multiplier);
1247 if((*delay_max_duration) < (*delay_down_duration) * (*delay_multiplier))
1248 *delay_max_duration = (*delay_down_duration) * (*delay_multiplier);
1254 static inline int health_parse_db_lookup(
1255 size_t line, const char *path, const char *file, char *string,
1256 int *group_method, int *after, int *before, int *every,
1257 uint32_t *options, char **dimensions
1259 debug(D_HEALTH, "Health configuration parsing database lookup %zu@%s/%s: %s", line, path, file, string);
1261 if(*dimensions) freez(*dimensions);
1268 char *s = string, *key;
1270 // first is the group method
1272 while(*s && !isspace(*s)) s++;
1273 while(*s && isspace(*s)) *s++ = '\0';
1275 error("Health configuration invalid chart calculation at line %zu of file '%s/%s': expected group method followed by the 'after' time, but got '%s'",
1276 line, path, file, key);
1280 if((*group_method = web_client_api_request_v1_data_group(key, -1)) == -1) {
1281 error("Health configuration at line %zu of file '%s/%s': invalid group method '%s'",
1282 line, path, file, key);
1286 // then is the 'after' time
1288 while(*s && !isspace(*s)) s++;
1289 while(*s && isspace(*s)) *s++ = '\0';
1291 if(!health_parse_duration(key, after)) {
1292 error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' after group method",
1293 line, path, file, key);
1298 *every = abs(*after);
1300 // now we may have optional parameters
1303 while(*s && !isspace(*s)) s++;
1304 while(*s && isspace(*s)) *s++ = '\0';
1307 if(!strcasecmp(key, "at")) {
1309 while(*s && !isspace(*s)) s++;
1310 while(*s && isspace(*s)) *s++ = '\0';
1312 if (!health_parse_duration(value, before)) {
1313 error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
1314 line, path, file, value, key);
1317 else if(!strcasecmp(key, HEALTH_EVERY_KEY)) {
1319 while(*s && !isspace(*s)) s++;
1320 while(*s && isspace(*s)) *s++ = '\0';
1322 if (!health_parse_duration(value, every)) {
1323 error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
1324 line, path, file, value, key);
1327 else if(!strcasecmp(key, "absolute") || !strcasecmp(key, "abs") || !strcasecmp(key, "absolute_sum")) {
1328 *options |= RRDR_OPTION_ABSOLUTE;
1330 else if(!strcasecmp(key, "min2max")) {
1331 *options |= RRDR_OPTION_MIN2MAX;
1333 else if(!strcasecmp(key, "null2zero")) {
1334 *options |= RRDR_OPTION_NULL2ZERO;
1336 else if(!strcasecmp(key, "percentage")) {
1337 *options |= RRDR_OPTION_PERCENTAGE;
1339 else if(!strcasecmp(key, "unaligned")) {
1340 *options |= RRDR_OPTION_NOT_ALIGNED;
1342 else if(!strcasecmp(key, "of")) {
1343 if(*s && strcasecmp(s, "all"))
1344 *dimensions = strdupz(s);
1348 error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
1349 line, path, file, key);
1356 static inline char *health_source_file(size_t line, const char *path, const char *filename) {
1357 char buffer[FILENAME_MAX + 1];
1358 snprintfz(buffer, FILENAME_MAX, "%zu@%s/%s", line, path, filename);
1359 return strdupz(buffer);
1362 static inline void strip_quotes(char *s) {
1364 if(*s == '\'' || *s == '"') *s = ' ';
1369 int health_readfile(const char *path, const char *filename) {
1370 debug(D_HEALTH, "Health configuration reading file '%s/%s'", path, filename);
1372 static uint32_t hash_alarm = 0, hash_template = 0, hash_on = 0, hash_calc = 0, hash_green = 0, hash_red = 0, hash_warn = 0, hash_crit = 0, hash_exec = 0, hash_every = 0, hash_lookup = 0, hash_units = 0, hash_info = 0, hash_recipient = 0, hash_delay = 0;
1373 char buffer[HEALTH_CONF_MAX_LINE + 1];
1375 if(unlikely(!hash_alarm)) {
1376 hash_alarm = simple_uhash(HEALTH_ALARM_KEY);
1377 hash_template = simple_uhash(HEALTH_TEMPLATE_KEY);
1378 hash_on = simple_uhash(HEALTH_ON_KEY);
1379 hash_calc = simple_uhash(HEALTH_CALC_KEY);
1380 hash_lookup = simple_uhash(HEALTH_LOOKUP_KEY);
1381 hash_green = simple_uhash(HEALTH_GREEN_KEY);
1382 hash_red = simple_uhash(HEALTH_RED_KEY);
1383 hash_warn = simple_uhash(HEALTH_WARN_KEY);
1384 hash_crit = simple_uhash(HEALTH_CRIT_KEY);
1385 hash_exec = simple_uhash(HEALTH_EXEC_KEY);
1386 hash_every = simple_uhash(HEALTH_EVERY_KEY);
1387 hash_units = simple_hash(HEALTH_UNITS_KEY);
1388 hash_info = simple_hash(HEALTH_INFO_KEY);
1389 hash_recipient = simple_hash(HEALTH_RECIPIENT_KEY);
1390 hash_delay = simple_uhash(HEALTH_DELAY_KEY);
1393 snprintfz(buffer, HEALTH_CONF_MAX_LINE, "%s/%s", path, filename);
1394 FILE *fp = fopen(buffer, "r");
1396 error("Health configuration cannot read file '%s'.", buffer);
1401 RRDCALCTEMPLATE *rt = NULL;
1403 size_t line = 0, append = 0;
1405 while((s = fgets(&buffer[append], (int)(HEALTH_CONF_MAX_LINE - append), fp)) || append) {
1406 int stop_appending = !s;
1408 // info("Line %zu of file '%s/%s': '%s'", line, path, filename, s);
1411 // info("Trimmed line %zu of file '%s/%s': '%s'", line, path, filename, s);
1414 if(!stop_appending && s[append - 1] == '\\') {
1415 s[append - 1] = ' ';
1416 append = &s[append] - buffer;
1417 if(append < HEALTH_CONF_MAX_LINE)
1420 error("Health configuration has too long muli-line at line %zu of file '%s/%s'.", line, path, filename);
1426 while(*s && *s != ':') s++;
1428 error("Health configuration has invalid line %zu of file '%s/%s'. It does not contain a ':'. Ignoring it.", line, path, filename);
1436 value = trim(value);
1439 error("Health configuration has invalid line %zu of file '%s/%s'. Keyword is empty. Ignoring it.", line, path, filename);
1444 error("Health configuration has invalid line %zu of file '%s/%s'. value is empty. Ignoring it.", line, path, filename);
1448 // info("Health file '%s/%s', key '%s', value '%s'", path, filename, key, value);
1449 uint32_t hash = simple_uhash(key);
1451 if(hash == hash_alarm && !strcasecmp(key, HEALTH_ALARM_KEY)) {
1452 if(rc && !rrdcalc_add_alarm_from_config(&localhost, rc))
1453 rrdcalc_free(&localhost, rc);
1456 if (!rrdcalctemplate_add_template_from_config(&localhost, rt))
1457 rrdcalctemplate_free(&localhost, rt);
1461 rc = callocz(1, sizeof(RRDCALC));
1462 rc->next_event_id = 1;
1463 rc->name = strdupz(value);
1464 rc->hash = simple_hash(rc->name);
1465 rc->source = health_source_file(line, path, filename);
1469 rc->old_value = NAN;
1470 rc->delay_multiplier = 1.0;
1472 if(rrdvar_fix_name(rc->name))
1473 error("Health configuration renamed alarm '%s' to '%s'", value, rc->name);
1475 else if(hash == hash_template && !strcasecmp(key, HEALTH_TEMPLATE_KEY)) {
1477 if(!rrdcalc_add_alarm_from_config(&localhost, rc))
1478 rrdcalc_free(&localhost, rc);
1482 if(rt && !rrdcalctemplate_add_template_from_config(&localhost, rt))
1483 rrdcalctemplate_free(&localhost, rt);
1485 rt = callocz(1, sizeof(RRDCALCTEMPLATE));
1486 rt->name = strdupz(value);
1487 rt->hash_name = simple_hash(rt->name);
1488 rt->source = health_source_file(line, path, filename);
1491 rt->delay_multiplier = 1.0;
1493 if(rrdvar_fix_name(rt->name))
1494 error("Health configuration renamed template '%s' to '%s'", value, rt->name);
1497 if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
1499 if(strcmp(rc->chart, value))
1500 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1501 line, path, filename, rc->name, key, rc->chart, value, value);
1505 rc->chart = strdupz(value);
1506 rc->hash_chart = simple_hash(rc->chart);
1508 else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
1509 health_parse_db_lookup(line, path, filename, value, &rc->group, &rc->after, &rc->before,
1511 &rc->options, &rc->dimensions);
1513 else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
1514 if(!health_parse_duration(value, &rc->update_every))
1515 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' cannot parse duration: '%s'.",
1516 line, path, filename, rc->name, key, value);
1518 else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
1520 rc->green = strtold(value, &e);
1522 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
1523 line, path, filename, rc->name, key, e);
1526 else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
1528 rc->red = strtold(value, &e);
1530 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
1531 line, path, filename, rc->name, key, e);
1534 else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
1535 const char *failed_at = NULL;
1537 rc->calculation = expression_parse(value, &failed_at, &error);
1538 if(!rc->calculation) {
1539 error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
1540 line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
1543 else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
1544 const char *failed_at = NULL;
1546 rc->warning = expression_parse(value, &failed_at, &error);
1548 error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
1549 line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
1552 else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
1553 const char *failed_at = NULL;
1555 rc->critical = expression_parse(value, &failed_at, &error);
1557 error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
1558 line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
1561 else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
1563 if(strcmp(rc->exec, value))
1564 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1565 line, path, filename, rc->name, key, rc->exec, value, value);
1569 rc->exec = strdupz(value);
1571 else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
1573 if(strcmp(rc->recipient, value))
1574 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1575 line, path, filename, rc->name, key, rc->recipient, value, value);
1577 freez(rc->recipient);
1579 rc->recipient = strdupz(value);
1581 else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
1583 if(strcmp(rc->units, value))
1584 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1585 line, path, filename, rc->name, key, rc->units, value, value);
1589 rc->units = strdupz(value);
1590 strip_quotes(rc->units);
1592 else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
1594 if(strcmp(rc->info, value))
1595 info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1596 line, path, filename, rc->name, key, rc->info, value, value);
1600 rc->info = strdupz(value);
1601 strip_quotes(rc->info);
1603 else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
1604 health_parse_delay(line, path, filename, value, &rc->delay_up_duration, &rc->delay_down_duration, &rc->delay_max_duration, &rc->delay_multiplier);
1607 error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has unknown key '%s'.",
1608 line, path, filename, rc->name, key);
1612 if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
1614 if(strcmp(rt->context, value))
1615 info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1616 line, path, filename, rt->name, key, rt->context, value, value);
1620 rt->context = strdupz(value);
1621 rt->hash_context = simple_hash(rt->context);
1623 else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
1624 health_parse_db_lookup(line, path, filename, value, &rt->group, &rt->after, &rt->before,
1626 &rt->options, &rt->dimensions);
1628 else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
1629 if(!health_parse_duration(value, &rt->update_every))
1630 info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' cannot parse duration: '%s'.",
1631 line, path, filename, rt->name, key, value);
1633 else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
1635 rt->green = strtold(value, &e);
1637 info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
1638 line, path, filename, rt->name, key, e);
1641 else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
1643 rt->red = strtold(value, &e);
1645 info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
1646 line, path, filename, rt->name, key, e);
1649 else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
1650 const char *failed_at = NULL;
1652 rt->calculation = expression_parse(value, &failed_at, &error);
1653 if(!rt->calculation) {
1654 error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
1655 line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
1658 else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
1659 const char *failed_at = NULL;
1661 rt->warning = expression_parse(value, &failed_at, &error);
1663 error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
1664 line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
1667 else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
1668 const char *failed_at = NULL;
1670 rt->critical = expression_parse(value, &failed_at, &error);
1672 error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
1673 line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
1676 else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
1678 if(strcmp(rt->exec, value))
1679 info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1680 line, path, filename, rt->name, key, rt->exec, value, value);
1684 rt->exec = strdupz(value);
1686 else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
1688 if(strcmp(rt->recipient, value))
1689 info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1690 line, path, filename, rt->name, key, rt->recipient, value, value);
1692 freez(rt->recipient);
1694 rt->recipient = strdupz(value);
1696 else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
1698 if(strcmp(rt->units, value))
1699 info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1700 line, path, filename, rt->name, key, rt->units, value, value);
1704 rt->units = strdupz(value);
1705 strip_quotes(rt->units);
1707 else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
1709 if(strcmp(rt->info, value))
1710 info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
1711 line, path, filename, rt->name, key, rt->info, value, value);
1715 rt->info = strdupz(value);
1716 strip_quotes(rt->info);
1718 else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
1719 health_parse_delay(line, path, filename, value, &rt->delay_up_duration, &rt->delay_down_duration, &rt->delay_max_duration, &rt->delay_multiplier);
1722 error("Health configuration at line %zu of file '%s/%s' for template '%s' has unknown key '%s'.",
1723 line, path, filename, rt->name, key);
1727 error("Health configuration at line %zu of file '%s/%s' has unknown key '%s'. Expected either '" HEALTH_ALARM_KEY "' or '" HEALTH_TEMPLATE_KEY "'.",
1728 line, path, filename, key);
1732 if(rc && !rrdcalc_add_alarm_from_config(&localhost, rc))
1733 rrdcalc_free(&localhost, rc);
1735 if(rt && !rrdcalctemplate_add_template_from_config(&localhost, rt))
1736 rrdcalctemplate_free(&localhost, rt);
1742 void health_readdir(const char *path) {
1743 size_t pathlen = strlen(path);
1745 debug(D_HEALTH, "Health configuration reading directory '%s'", path);
1747 DIR *dir = opendir(path);
1749 error("Health configuration cannot open directory '%s'.", path);
1753 struct dirent *de = NULL;
1754 while ((de = readdir(dir))) {
1755 size_t len = strlen(de->d_name);
1757 if(de->d_type == DT_DIR
1759 (de->d_name[0] == '.' && de->d_name[1] == '\0')
1760 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
1762 debug(D_HEALTH, "Ignoring directory '%s'", de->d_name);
1766 else if(de->d_type == DT_DIR) {
1767 char *s = mallocz(pathlen + strlen(de->d_name) + 2);
1770 strcat(s, de->d_name);
1776 else if((de->d_type == DT_LNK || de->d_type == DT_REG || de->d_type == DT_UNKNOWN) &&
1777 len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
1778 health_readfile(path, de->d_name);
1781 else debug(D_HEALTH, "Ignoring file '%s'", de->d_name);
1787 static inline char *health_config_dir(void) {
1788 char buffer[FILENAME_MAX + 1];
1789 snprintfz(buffer, FILENAME_MAX, "%s/health.d", config_get("global", "config directory", CONFIG_DIR));
1790 return config_get("health", "health configuration directory", buffer);
1793 void health_init(void) {
1794 debug(D_HEALTH, "Health configuration initializing");
1796 if(!(health_enabled = config_get_boolean("health", "enabled", 1))) {
1797 debug(D_HEALTH, "Health is disabled.");
1801 health_alarm_log_load(&localhost);
1803 char *path = health_config_dir();
1806 char buffer[FILENAME_MAX + 1];
1807 snprintfz(buffer, FILENAME_MAX, "%s/alarm-notify.sh", config_get("global", "plugins directory", PLUGINS_DIR));
1808 health.health_default_exec = config_get("health", "script to execute on alarm", buffer);
1811 long n = config_get_number("health", "in memory max health log entries", (long)localhost.health_log.max);
1813 error("Health configuration has invalid max log entries %ld. Using default %u", n, localhost.health_log.max);
1814 config_set_number("health", "in memory max health log entries", (long)localhost.health_log.max);
1816 else localhost.health_log.max = (unsigned int)n;
1818 rrdhost_rwlock(&localhost);
1819 health_readdir(path);
1820 rrdhost_unlock(&localhost);
1823 // ----------------------------------------------------------------------------
1826 static inline void health_string2json(BUFFER *wb, const char *prefix, const char *label, const char *value, const char *suffix) {
1828 buffer_sprintf(wb, "%s\"%s\":\"%s\"%s", prefix, label, value, suffix);
1830 buffer_sprintf(wb, "%s\"%s\":null%s", prefix, label, suffix);
1833 static inline void health_alarm_entry2json_nolock(BUFFER *wb, ALARM_ENTRY *ae, RRDHOST *host) {
1834 buffer_sprintf(wb, "\n\t{\n"
1835 "\t\t\"hostname\": \"%s\",\n"
1836 "\t\t\"unique_id\": %u,\n"
1837 "\t\t\"alarm_id\": %u,\n"
1838 "\t\t\"alarm_event_id\": %u,\n"
1839 "\t\t\"name\": \"%s\",\n"
1840 "\t\t\"chart\": \"%s\",\n"
1841 "\t\t\"family\": \"%s\",\n"
1842 "\t\t\"processed\": %s,\n"
1843 "\t\t\"updated\": %s,\n"
1844 "\t\t\"exec_run\": %lu,\n"
1845 "\t\t\"exec_failed\": %s,\n"
1846 "\t\t\"exec\": \"%s\",\n"
1847 "\t\t\"recipient\": \"%s\",\n"
1848 "\t\t\"exec_code\": %d,\n"
1849 "\t\t\"source\": \"%s\",\n"
1850 "\t\t\"units\": \"%s\",\n"
1851 "\t\t\"info\": \"%s\",\n"
1852 "\t\t\"when\": %lu,\n"
1853 "\t\t\"duration\": %lu,\n"
1854 "\t\t\"non_clear_duration\": %lu,\n"
1855 "\t\t\"status\": \"%s\",\n"
1856 "\t\t\"old_status\": \"%s\",\n"
1857 "\t\t\"delay\": %d,\n"
1858 "\t\t\"delay_up_to_timestamp\": %lu,\n"
1859 "\t\t\"updated_by_id\": %u,\n"
1860 "\t\t\"updates_id\": %u,\n",
1868 (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_PROCESSED)?"true":"false",
1869 (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED)?"true":"false",
1870 (unsigned long)ae->exec_run_timestamp,
1871 (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_EXEC_FAILED)?"true":"false",
1872 ae->exec?ae->exec:health.health_default_exec,
1873 ae->recipient?ae->recipient:health.health_default_recipient,
1876 ae->units?ae->units:"",
1877 ae->info?ae->info:"",
1878 (unsigned long)ae->when,
1879 (unsigned long)ae->duration,
1880 (unsigned long)ae->non_clear_duration,
1881 rrdcalc_status2string(ae->new_status),
1882 rrdcalc_status2string(ae->old_status),
1884 (unsigned long)ae->delay_up_to_timestamp,
1889 buffer_strcat(wb, "\t\t\"value\":");
1890 buffer_rrd_value(wb, ae->new_value);
1891 buffer_strcat(wb, ",\n");
1893 buffer_strcat(wb, "\t\t\"old_value\":");
1894 buffer_rrd_value(wb, ae->old_value);
1895 buffer_strcat(wb, "\n");
1897 buffer_strcat(wb, "\t}");
1900 void health_alarm_log2json(RRDHOST *host, BUFFER *wb, uint32_t after) {
1901 pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
1903 buffer_strcat(wb, "[");
1905 unsigned int max = host->health_log.max;
1906 unsigned int count = 0;
1908 for(ae = host->health_log.alarms; ae && count < max ; count++, ae = ae->next) {
1909 if(ae->unique_id > after) {
1910 if(likely(count)) buffer_strcat(wb, ",");
1911 health_alarm_entry2json_nolock(wb, ae, host);
1915 buffer_strcat(wb, "\n]\n");
1917 pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
1920 static inline void health_rrdcalc2json_nolock(BUFFER *wb, RRDCALC *rc) {
1922 "\t\t\"%s.%s\": {\n"
1923 "\t\t\t\"id\": %lu,\n"
1924 "\t\t\t\"name\": \"%s\",\n"
1925 "\t\t\t\"chart\": \"%s\",\n"
1926 "\t\t\t\"family\": \"%s\",\n"
1927 "\t\t\t\"active\": %s,\n"
1928 "\t\t\t\"exec\": \"%s\",\n"
1929 "\t\t\t\"recipient\": \"%s\",\n"
1930 "\t\t\t\"source\": \"%s\",\n"
1931 "\t\t\t\"units\": \"%s\",\n"
1932 "\t\t\t\"info\": \"%s\",\n"
1933 "\t\t\t\"status\": \"%s\",\n"
1934 "\t\t\t\"last_status_change\": %lu,\n"
1935 "\t\t\t\"last_updated\": %lu,\n"
1936 "\t\t\t\"next_update\": %lu,\n"
1937 "\t\t\t\"update_every\": %d,\n"
1938 "\t\t\t\"delay_up_duration\": %d,\n"
1939 "\t\t\t\"delay_down_duration\": %d,\n"
1940 "\t\t\t\"delay_max_duration\": %d,\n"
1941 "\t\t\t\"delay_multiplier\": %f,\n"
1942 "\t\t\t\"delay\": %d,\n"
1943 "\t\t\t\"delay_up_to_timestamp\": %lu,\n"
1944 , rc->chart, rc->name
1945 , (unsigned long)rc->id
1948 , (rc->rrdset && rc->rrdset->family)?rc->rrdset->family:""
1949 , (rc->rrdset)?"true":"false"
1950 , rc->exec?rc->exec:health.health_default_exec
1951 , rc->recipient?rc->recipient:health.health_default_recipient
1953 , rc->units?rc->units:""
1954 , rc->info?rc->info:""
1955 , rrdcalc_status2string(rc->status)
1956 , (unsigned long)rc->last_status_change
1957 , (unsigned long)rc->last_updated
1958 , (unsigned long)rc->next_update
1960 , rc->delay_up_duration
1961 , rc->delay_down_duration
1962 , rc->delay_max_duration
1963 , rc->delay_multiplier
1965 , (unsigned long)rc->delay_up_to_timestamp
1968 if(RRDCALC_HAS_DB_LOOKUP(rc)) {
1969 if(rc->dimensions && *rc->dimensions)
1970 health_string2json(wb, "\t\t\t", "lookup_dimensions", rc->dimensions, ",\n");
1973 "\t\t\t\"db_after\": %lu,\n"
1974 "\t\t\t\"db_before\": %lu,\n"
1975 "\t\t\t\"lookup_method\": \"%s\",\n"
1976 "\t\t\t\"lookup_after\": %d,\n"
1977 "\t\t\t\"lookup_before\": %d,\n"
1978 "\t\t\t\"lookup_options\": \"",
1979 (unsigned long) rc->db_after,
1980 (unsigned long) rc->db_before,
1981 group_method2string(rc->group),
1985 buffer_data_options2string(wb, rc->options);
1986 buffer_strcat(wb, "\",\n");
1989 if(rc->calculation) {
1990 health_string2json(wb, "\t\t\t", "calc", rc->calculation->source, ",\n");
1991 health_string2json(wb, "\t\t\t", "calc_parsed", rc->calculation->parsed_as, ",\n");
1995 health_string2json(wb, "\t\t\t", "warn", rc->warning->source, ",\n");
1996 health_string2json(wb, "\t\t\t", "warn_parsed", rc->warning->parsed_as, ",\n");
2000 health_string2json(wb, "\t\t\t", "crit", rc->critical->source, ",\n");
2001 health_string2json(wb, "\t\t\t", "crit_parsed", rc->critical->parsed_as, ",\n");
2004 buffer_strcat(wb, "\t\t\t\"green\":");
2005 buffer_rrd_value(wb, rc->green);
2006 buffer_strcat(wb, ",\n");
2008 buffer_strcat(wb, "\t\t\t\"red\":");
2009 buffer_rrd_value(wb, rc->red);
2010 buffer_strcat(wb, ",\n");
2012 buffer_strcat(wb, "\t\t\t\"value\":");
2013 buffer_rrd_value(wb, rc->value);
2014 buffer_strcat(wb, "\n");
2016 buffer_strcat(wb, "\t\t}");
2019 //void health_rrdcalctemplate2json_nolock(BUFFER *wb, RRDCALCTEMPLATE *rt) {
2023 void health_alarms2json(RRDHOST *host, BUFFER *wb, int all) {
2026 rrdhost_rdlock(&localhost);
2027 buffer_sprintf(wb, "{\n\t\"hostname\": \"%s\","
2028 "\n\t\"latest_alarm_log_unique_id\": %u,"
2029 "\n\t\"status\": %s,"
2031 "\n\t\"alarms\": {\n",
2033 (host->health_log.next_log_id > 0)?(host->health_log.next_log_id - 1):0,
2034 health_enabled?"true":"false",
2035 (unsigned long)time(NULL));
2038 for(i = 0, rc = host->alarms; rc ; rc = rc->next) {
2039 if(unlikely(!rc->rrdset || !rc->rrdset->last_collected_time.tv_sec))
2042 if(likely(!all && !(rc->status == RRDCALC_STATUS_WARNING || rc->status == RRDCALC_STATUS_CRITICAL)))
2045 if(likely(i)) buffer_strcat(wb, ",\n");
2046 health_rrdcalc2json_nolock(wb, rc);
2050 // buffer_strcat(wb, "\n\t},\n\t\"templates\": {");
2051 // RRDCALCTEMPLATE *rt;
2052 // for(rt = host->templates; rt ; rt = rt->next)
2053 // health_rrdcalctemplate2json_nolock(wb, rt);
2055 buffer_strcat(wb, "\n\t}\n}\n");
2056 rrdhost_unlock(&localhost);
2060 // ----------------------------------------------------------------------------
2061 // re-load health configuration
2063 static inline void health_free_all_nolock(RRDHOST *host) {
2064 while(host->templates)
2065 rrdcalctemplate_free(host, host->templates);
2068 rrdcalc_free(host, host->alarms);
2071 void health_reload(void) {
2072 if(!health_enabled) {
2073 error("Health reload is requested, but health is not enabled.");
2077 char *path = health_config_dir();
2079 // free all running alarms
2080 rrdhost_rwlock(&localhost);
2081 health_free_all_nolock(&localhost);
2082 rrdhost_unlock(&localhost);
2084 // invalidate all previous entries in the alarm log
2086 for(t = localhost.health_log.alarms ; t ; t = t->next) {
2087 if(t->new_status != RRDCALC_STATUS_REMOVED)
2088 t->notifications |= HEALTH_ENTRY_NOTIFICATIONS_UPDATED;
2091 // reset all thresholds to all charts
2093 for(st = localhost.rrdset_root; st ; st = st->next) {
2098 // load the new alarms
2099 rrdhost_rwlock(&localhost);
2100 health_readdir(path);
2101 rrdhost_unlock(&localhost);
2103 // link the loaded alarms to their charts
2104 for(st = localhost.rrdset_root; st ; st = st->next) {
2105 rrdhost_rwlock(&localhost);
2107 rrdsetcalc_link_matching(st);
2108 rrdcalctemplate_link_matching(st);
2110 rrdhost_unlock(&localhost);
2114 // ----------------------------------------------------------------------------
2115 // health main thread and friends
2117 static inline int rrdcalc_value2status(calculated_number n) {
2118 if(isnan(n)) return RRDCALC_STATUS_UNDEFINED;
2119 if(n) return RRDCALC_STATUS_RAISED;
2120 return RRDCALC_STATUS_CLEAR;
2123 static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
2124 ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_PROCESSED;
2126 // find the previous notification for the same alarm
2128 for(t = ae->next; t ;t = t->next) {
2129 if(t->alarm_id == ae->alarm_id && t->notifications & HEALTH_ENTRY_NOTIFICATIONS_EXEC_RUN)
2133 if(t && t->new_status == ae->new_status) {
2134 // don't send the same notification again
2135 info("Health not sending again notification for alarm '%s.%s' status %s", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
2139 if((ae->old_status == RRDCALC_STATUS_UNDEFINED && ae->new_status == RRDCALC_STATUS_UNINITIALIZED)
2140 || (ae->old_status == RRDCALC_STATUS_UNINITIALIZED && ae->new_status == RRDCALC_STATUS_CLEAR)) {
2141 info("Health not sending notification for first initialization of alarm '%s.%s' status %s", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
2145 char buffer[FILENAME_MAX + 1];
2148 const char *exec = ae->exec;
2149 if(!exec) exec = health.health_default_exec;
2151 const char *recipient = ae->recipient;
2152 if(!recipient) recipient = health.health_default_recipient;
2154 snprintfz(buffer, FILENAME_MAX, "exec %s '%s' '%s' '%u' '%u' '%u' '%lu' '%s' '%s' '%s' '%s' '%s' '%0.0Lf' '%0.0Lf' '%s' '%u' '%u' '%s' '%s'",
2161 (unsigned long)ae->when,
2163 ae->chart?ae->chart:"NOCAHRT",
2164 ae->family?ae->family:"NOFAMILY",
2165 rrdcalc_status2string(ae->new_status),
2166 rrdcalc_status2string(ae->old_status),
2169 ae->source?ae->source:"UNKNOWN",
2170 (uint32_t)ae->duration,
2171 (uint32_t)ae->non_clear_duration,
2172 ae->units?ae->units:"",
2173 ae->info?ae->info:""
2176 ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_EXEC_RUN;
2177 ae->exec_run_timestamp = time(NULL);
2179 debug(D_HEALTH, "executing command '%s'", buffer);
2180 FILE *fp = mypopen(buffer, &command_pid);
2182 error("HEALTH: Cannot popen(\"%s\", \"r\").", buffer);
2185 debug(D_HEALTH, "HEALTH reading from command");
2186 char *s = fgets(buffer, FILENAME_MAX, fp);
2188 ae->exec_code = mypclose(fp, command_pid);
2189 debug(D_HEALTH, "done executing command - returned with code %d", ae->exec_code);
2191 if(ae->exec_code != 0)
2192 ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_EXEC_FAILED;
2195 health_alarm_log_save(host, ae);
2199 static inline void health_process_notifications(RRDHOST *host, ALARM_ENTRY *ae) {
2200 info("Health alarm '%s.%s' = %0.2Lf - changed status from %s to %s",
2201 ae->chart?ae->chart:"NOCHART", ae->name,
2203 rrdcalc_status2string(ae->old_status),
2204 rrdcalc_status2string(ae->new_status)
2207 health_alarm_execute(host, ae);
2210 static inline void health_alarm_log_process(RRDHOST *host) {
2211 static uint32_t stop_at_id = 0;
2212 uint32_t first_waiting = (host->health_log.alarms)?host->health_log.alarms->unique_id:0;
2213 time_t now = time(NULL);
2215 pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
2218 for(ae = host->health_log.alarms; ae && ae->unique_id >= stop_at_id ; ae = ae->next) {
2220 !(ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_PROCESSED) &&
2221 !(ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED)
2224 if(unlikely(ae->unique_id < first_waiting))
2225 first_waiting = ae->unique_id;
2227 if(likely(now >= ae->delay_up_to_timestamp))
2228 health_process_notifications(host, ae);
2232 // remember this for the next iteration
2233 stop_at_id = first_waiting;
2235 pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
2237 if(host->health_log.count <= host->health_log.max)
2240 // cleanup excess entries in the log
2241 pthread_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
2243 ALARM_ENTRY *last = NULL;
2244 unsigned int count = host->health_log.max * 2 / 3;
2245 for(ae = host->health_log.alarms; ae && count ; count--, last = ae, ae = ae->next) ;
2247 if(ae && last && last->next == ae)
2253 debug(D_HEALTH, "Health removing alarm log entry with id: %u", ae->unique_id);
2255 ALARM_ENTRY *t = ae->next;
2261 freez(ae->recipient);
2268 host->health_log.count--;
2271 pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
2274 static inline int rrdcalc_isrunnable(RRDCALC *rc, time_t now, time_t *next_run) {
2275 if (unlikely(!rc->rrdset)) {
2276 debug(D_HEALTH, "Health not running alarm '%s.%s'. It is not linked to a chart.", rc->chart?rc->chart:"NOCHART", rc->name);
2280 if (unlikely(!rc->rrdset->last_collected_time.tv_sec)) {
2281 debug(D_HEALTH, "Health not running alarm '%s.%s'. Chart is not yet collected.", rc->chart?rc->chart:"NOCHART", rc->name);
2285 if (unlikely(!rc->update_every)) {
2286 debug(D_HEALTH, "Health not running alarm '%s.%s'. It does not have an update frequency", rc->chart?rc->chart:"NOCHART", rc->name);
2290 if (unlikely(rc->next_update > now)) {
2291 if (unlikely(*next_run > rc->next_update))
2292 *next_run = rc->next_update;
2294 debug(D_HEALTH, "Health not examining alarm '%s.%s' yet (will do in %d secs).", rc->chart?rc->chart:"NOCHART", rc->name, (int) (rc->next_update - now));
2299 // we should check that the DB lookup is possible
2301 // - the duration of the chart includes the required timeframe
2302 // we SHOULD NOT check the dimensions - there might be alarms that refer non-existing dimensions (e.g. cpu steal)
2307 void *health_main(void *ptr) {
2310 info("HEALTH thread created with task id %d", gettid());
2312 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
2313 error("Cannot set pthread cancel type to DEFERRED.");
2315 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
2316 error("Cannot set pthread cancel state to ENABLE.");
2318 int min_run_every = (int)config_get_number("health", "run at least every seconds", 10);
2319 if(min_run_every < 1) min_run_every = 1;
2321 BUFFER *wb = buffer_create(100);
2323 unsigned int loop = 0;
2324 while(health_enabled && !netdata_exit) {
2326 debug(D_HEALTH, "Health monitoring iteration no %u started", loop);
2328 int oldstate, runnable = 0;
2329 time_t now = time(NULL);
2330 time_t next_run = now + min_run_every;
2333 if (unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 0))
2334 error("Cannot set pthread cancel state to DISABLE.");
2336 rrdhost_rdlock(&localhost);
2338 // the first loop is to lookup values from the db
2339 for (rc = localhost.alarms; rc; rc = rc->next) {
2340 if (unlikely(!rrdcalc_isrunnable(rc, now, &next_run)))
2344 rc->old_value = rc->value;
2346 // 1. if there is database lookup, do it
2347 // 2. if there is calculation expression, run it
2349 if (unlikely(RRDCALC_HAS_DB_LOOKUP(rc))) {
2350 time_t old_db_timestamp = rc->db_before;
2351 int value_is_null = 0;
2353 int ret = rrd2value(rc->rrdset, wb, &rc->value,
2354 rc->dimensions, 1, rc->after, rc->before, rc->group,
2355 rc->options, &rc->db_after, &rc->db_before, &value_is_null);
2357 if (unlikely(ret != 200)) {
2358 // database lookup failed
2361 debug(D_HEALTH, "Health alarm '%s.%s': database lookup returned error %d", rc->chart?rc->chart:"NOCHART", rc->name, ret);
2363 if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_ERROR))) {
2364 rc->rrdcalc_flags |= RRDCALC_FLAG_DB_ERROR;
2365 error("Health alarm '%s.%s': database lookup returned error %d", rc->chart?rc->chart:"NOCHART", rc->name, ret);
2368 else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_ERROR))
2369 rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_ERROR;
2371 if (unlikely(old_db_timestamp == rc->db_before)) {
2372 // database is stale
2374 debug(D_HEALTH, "Health alarm '%s.%s': database is stale", rc->chart?rc->chart:"NOCHART", rc->name);
2376 if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE))) {
2377 rc->rrdcalc_flags |= RRDCALC_FLAG_DB_STALE;
2378 error("Health alarm '%s.%s': database is stale", rc->chart?rc->chart:"NOCHART", rc->name);
2381 else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE))
2382 rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_STALE;
2384 if (unlikely(value_is_null)) {
2385 // collected value is null
2389 debug(D_HEALTH, "Health alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)",
2390 rc->chart?rc->chart:"NOCHART", rc->name);
2392 if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_NAN))) {
2393 rc->rrdcalc_flags |= RRDCALC_FLAG_DB_NAN;
2394 error("Health alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)",
2395 rc->chart?rc->chart:"NOCHART", rc->name);
2398 else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_NAN))
2399 rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_NAN;
2401 debug(D_HEALTH, "Health alarm '%s.%s': database lookup gave value "
2402 CALCULATED_NUMBER_FORMAT, rc->chart?rc->chart:"NOCHART", rc->name, rc->value);
2405 if(unlikely(rc->calculation)) {
2406 if (unlikely(!expression_evaluate(rc->calculation))) {
2407 // calculation failed
2411 debug(D_HEALTH, "Health alarm '%s.%s': failed to evaluate calculation with error: %s",
2412 rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->calculation->error_msg));
2414 if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_CALC_ERROR))) {
2415 rc->rrdcalc_flags |= RRDCALC_FLAG_CALC_ERROR;
2416 error("Health alarm '%s.%s': failed to evaluate calculation with error: %s",
2417 rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->calculation->error_msg));
2421 if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_CALC_ERROR))
2422 rc->rrdcalc_flags &= ~RRDCALC_FLAG_CALC_ERROR;
2424 debug(D_HEALTH, "Health alarm '%s.%s': calculation expression gave value "
2425 CALCULATED_NUMBER_FORMAT
2426 ": %s (source: %s)",
2427 rc->chart?rc->chart:"NOCHART", rc->name,
2428 rc->calculation->result,
2429 buffer_tostring(rc->calculation->error_msg),
2433 rc->value = rc->calculation->result;
2437 rrdhost_unlock(&localhost);
2439 if (unlikely(runnable && !netdata_exit)) {
2440 rrdhost_rdlock(&localhost);
2442 for (rc = localhost.alarms; rc; rc = rc->next) {
2443 if (unlikely(!rrdcalc_isrunnable(rc, now, &next_run)))
2446 int warning_status = RRDCALC_STATUS_UNDEFINED;
2447 int critical_status = RRDCALC_STATUS_UNDEFINED;
2449 if(likely(rc->warning)) {
2450 if(unlikely(!expression_evaluate(rc->warning))) {
2451 // calculation failed
2453 debug(D_HEALTH, "Health alarm '%s.%s': warning expression failed with error: %s",
2454 rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->warning->error_msg));
2456 if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_WARN_ERROR))) {
2457 rc->rrdcalc_flags |= RRDCALC_FLAG_WARN_ERROR;
2458 error("Health alarm '%s.%s': warning expression failed with error: %s",
2459 rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->warning->error_msg));
2463 if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_WARN_ERROR))
2464 rc->rrdcalc_flags &= ~RRDCALC_FLAG_WARN_ERROR;
2466 debug(D_HEALTH, "Health alarm '%s.%s': warning expression gave value "
2467 CALCULATED_NUMBER_FORMAT
2468 ": %s (source: %s)",
2469 rc->chart?rc->chart:"NOCHART", rc->name,
2470 rc->warning->result,
2471 buffer_tostring(rc->warning->error_msg),
2475 warning_status = rrdcalc_value2status(rc->warning->result);
2479 if(likely(rc->critical)) {
2480 if(unlikely(!expression_evaluate(rc->critical))) {
2481 // calculation failed
2483 debug(D_HEALTH, "Health alarm '%s.%s': critical expression failed with error: %s",
2484 rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->critical->error_msg));
2486 if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_CRIT_ERROR))) {
2487 rc->rrdcalc_flags |= RRDCALC_FLAG_CRIT_ERROR;
2488 error("Health alarm '%s.%s': critical expression failed with error: %s",
2489 rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->critical->error_msg));
2493 if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_CRIT_ERROR))
2494 rc->rrdcalc_flags &= ~RRDCALC_FLAG_CRIT_ERROR;
2496 debug(D_HEALTH, "Health alarm '%s.%s': critical expression gave value "
2497 CALCULATED_NUMBER_FORMAT
2498 ": %s (source: %s)",
2499 rc->chart?rc->chart:"NOCHART", rc->name,
2500 rc->critical->result,
2501 buffer_tostring(rc->critical->error_msg),
2505 critical_status = rrdcalc_value2status(rc->critical->result);
2509 int status = RRDCALC_STATUS_UNDEFINED;
2511 switch(warning_status) {
2512 case RRDCALC_STATUS_CLEAR:
2513 status = RRDCALC_STATUS_CLEAR;
2516 case RRDCALC_STATUS_RAISED:
2517 status = RRDCALC_STATUS_WARNING;
2524 switch(critical_status) {
2525 case RRDCALC_STATUS_CLEAR:
2526 if(status == RRDCALC_STATUS_UNDEFINED)
2527 status = RRDCALC_STATUS_CLEAR;
2530 case RRDCALC_STATUS_RAISED:
2531 status = RRDCALC_STATUS_CRITICAL;
2538 if(status != rc->status) {
2541 if(now > rc->delay_up_to_timestamp) {
2542 rc->delay_up_current = rc->delay_up_duration;
2543 rc->delay_down_current = rc->delay_down_duration;
2545 rc->delay_up_to_timestamp = 0;
2548 rc->delay_up_current = (int)(rc->delay_up_current * rc->delay_multiplier);
2549 if(rc->delay_up_current > rc->delay_max_duration) rc->delay_up_current = rc->delay_max_duration;
2551 rc->delay_down_current = (int)(rc->delay_down_current * rc->delay_multiplier);
2552 if(rc->delay_down_current > rc->delay_max_duration) rc->delay_down_current = rc->delay_max_duration;
2555 if(status > rc->status)
2556 delay = rc->delay_up_current;
2558 delay = rc->delay_down_current;
2560 // COMMENTED: because we do need to send raising alarms
2561 // if(now + delay < rc->delay_up_to_timestamp)
2562 // delay = (int)(rc->delay_up_to_timestamp - now);
2564 rc->delay_last = delay;
2565 rc->delay_up_to_timestamp = now + delay;
2566 health_alarm_log(&localhost, rc->id, rc->next_event_id++, now, rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, rc->recipient, now - rc->last_status_change, rc->old_value, rc->value, rc->status, status, rc->source, rc->units, rc->info, rc->delay_last);
2567 rc->last_status_change = now;
2568 rc->status = status;
2571 rc->last_updated = now;
2572 rc->next_update = now + rc->update_every;
2574 if (next_run > rc->next_update)
2575 next_run = rc->next_update;
2578 rrdhost_unlock(&localhost);
2581 if (unlikely(pthread_setcancelstate(oldstate, NULL) != 0))
2582 error("Cannot set pthread cancel state to RESTORE (%d).", oldstate);
2584 if(unlikely(netdata_exit))
2587 // execute notifications
2589 health_alarm_log_process(&localhost);
2591 if(unlikely(netdata_exit))
2595 if(now < next_run) {
2596 debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration in %d secs",
2597 loop, (int) (next_run - now));
2598 sleep_usec(1000000 * (unsigned long long) (next_run - now));
2601 debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop);
2607 info("HEALTH thread exiting");