#include "common.h" #define RRDVAR_MAX_LENGTH 1024 static const char *health_default_exec = PLUGINS_DIR "/alarm-email.sh"; int health_enabled = 1; // ---------------------------------------------------------------------------- // RRDVAR management static inline int rrdvar_fix_name(char *variable) { int fixed = 0; while(*variable) { if (!isalnum(*variable) && *variable != '.' && *variable != '_') { *variable++ = '_'; fixed++; } else variable++; } return fixed; } int rrdvar_compare(void* a, void* b) { if(((RRDVAR *)a)->hash < ((RRDVAR *)b)->hash) return -1; else if(((RRDVAR *)a)->hash > ((RRDVAR *)b)->hash) return 1; else return strcmp(((RRDVAR *)a)->name, ((RRDVAR *)b)->name); } static inline RRDVAR *rrdvar_index_add(avl_tree_lock *tree, RRDVAR *rv) { RRDVAR *ret = (RRDVAR *)avl_insert_lock(tree, (avl *)(rv)); if(ret != rv) debug(D_VARIABLES, "Request to insert RRDVAR '%s' into index failed. Already exists.", rv->name); return ret; } static inline RRDVAR *rrdvar_index_del(avl_tree_lock *tree, RRDVAR *rv) { RRDVAR *ret = (RRDVAR *)avl_remove_lock(tree, (avl *)(rv)); if(!ret) error("Request to remove RRDVAR '%s' from index failed. Not Found.", rv->name); return ret; } static inline RRDVAR *rrdvar_index_find(avl_tree_lock *tree, const char *name, uint32_t hash) { RRDVAR tmp; tmp.name = (char *)name; tmp.hash = (hash)?hash:simple_hash(tmp.name); return (RRDVAR *)avl_search_lock(tree, (avl *)&tmp); } static inline void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv) { (void)host; if(!rv) return; if(tree) rrdvar_index_del(tree, rv); freez(rv->name); freez(rv); } static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, int type, calculated_number *value) { char *variable = strdupz(name); rrdvar_fix_name(variable); uint32_t hash = simple_hash(variable); RRDVAR *rv = rrdvar_index_find(tree, variable, hash); if(unlikely(!rv)) { debug(D_VARIABLES, "Variable '%s' not found in scope '%s'. Creating a new one.", variable, scope); rv = callocz(1, sizeof(RRDVAR)); rv->name = variable; rv->hash = hash; rv->type = type; rv->value = value; RRDVAR *ret = rrdvar_index_add(tree, rv); if(unlikely(ret != rv)) { debug(D_VARIABLES, "Variable '%s' in scope '%s' already exists", variable, scope); rrdvar_free(NULL, NULL, rv); rv = NULL; } else debug(D_VARIABLES, "Variable '%s' created in scope '%s'", variable, scope); } else { // already exists freez(variable); rv = NULL; } return rv; } // ---------------------------------------------------------------------------- // RRDVAR lookup calculated_number rrdvar2number(RRDVAR *rv) { switch(rv->type) { case RRDVAR_TYPE_CALCULATED: { calculated_number *n = (calculated_number *)rv->value; return *n; } case RRDVAR_TYPE_TIME_T: { time_t *n = (time_t *)rv->value; return *n; } case RRDVAR_TYPE_COLLECTED: { collected_number *n = (collected_number *)rv->value; return *n; } case RRDVAR_TYPE_TOTAL: { total_number *n = (total_number *)rv->value; return *n; } case RRDVAR_TYPE_INT: { int *n = (int *)rv->value; return *n; } default: error("I don't know how to convert RRDVAR type %d to calculated_number", rv->type); return NAN; } } void dump_variable(void *data) { RRDVAR *rv = (RRDVAR *)data; debug(D_HEALTH, "%50s : %20.5Lf", rv->name, rrdvar2number(rv)); } int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result) { RRDSET *st = rc->rrdset; RRDVAR *rv; if(!st) return 0; rv = rrdvar_index_find(&st->variables_root_index, variable, hash); if(rv) { *result = rrdvar2number(rv); return 1; } rv = rrdvar_index_find(&st->rrdfamily->variables_root_index, variable, hash); if(rv) { *result = rrdvar2number(rv); return 1; } rv = rrdvar_index_find(&st->rrdhost->variables_root_index, variable, hash); if(rv) { *result = rrdvar2number(rv); return 1; } debug(D_HEALTH, "Available local chart '%s' variables:", st->id); avl_traverse_lock(&st->variables_root_index, dump_variable); debug(D_HEALTH, "Available family '%s' variables:", st->rrdfamily->family); avl_traverse_lock(&st->rrdfamily->variables_root_index, dump_variable); debug(D_HEALTH, "Available host '%s' variables:", st->rrdhost->hostname); avl_traverse_lock(&st->rrdhost->variables_root_index, dump_variable); return 0; } // ---------------------------------------------------------------------------- // RRDSETVAR management RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, int type, void *value, uint32_t options) { debug(D_VARIABLES, "RRDVARSET create for chart id '%s' name '%s' with variable name '%s'", st->id, st->name, variable); RRDSETVAR *rs = (RRDSETVAR *)callocz(1, sizeof(RRDSETVAR)); char buffer[RRDVAR_MAX_LENGTH + 1]; snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, variable); rs->fullid = strdupz(buffer); snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, variable); rs->fullname = strdupz(buffer); rs->variable = strdupz(variable); rs->type = type; rs->value = value; rs->options = options; rs->rrdset = st; rs->local = rrdvar_create_and_index("local", &st->variables_root_index, rs->variable, rs->type, rs->value); rs->family = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullid, rs->type, rs->value); rs->host = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullid, rs->type, rs->value); rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value); rs->host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value); rs->next = st->variables; st->variables = rs; return rs; } void rrdsetvar_rename_all(RRDSET *st) { debug(D_VARIABLES, "RRDSETVAR rename for chart id '%s' name '%s'", st->id, st->name); // only these 2 can change name // rs->family_name // rs->host_name char buffer[RRDVAR_MAX_LENGTH + 1]; RRDSETVAR *rs, *next = st->variables; while((rs = next)) { next = rs->next; snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable); if (strcmp(buffer, rs->fullname)) { // name changed rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name); freez(rs->fullname); rs->fullname = strdupz(st->name); rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value); rs->host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value); } } rrdsetcalc_link_matching(st); } void rrdsetvar_free(RRDSETVAR *rs) { RRDSET *st = rs->rrdset; debug(D_VARIABLES, "RRDSETVAR free for chart id '%s' name '%s', variable '%s'", st->id, st->name, rs->variable); rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local); rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host); rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name); if(st->variables == rs) { st->variables = rs->next; } else { RRDSETVAR *t; for (t = st->variables; t && t->next != rs; t = t->next); if(!t) error("RRDSETVAR '%s' not found in chart '%s' variables linked list", rs->fullname, st->id); else t->next = rs->next; } freez(rs->fullid); freez(rs->fullname); freez(rs->variable); freez(rs); } // ---------------------------------------------------------------------------- // RRDDIMVAR management #define RRDDIMVAR_ID_MAX 1024 RRDDIMVAR *rrddimvar_create(RRDDIM *rd, int type, const char *prefix, const char *suffix, void *value, uint32_t options) { RRDSET *st = rd->rrdset; 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:""); if(!prefix) prefix = ""; if(!suffix) suffix = ""; char buffer[RRDDIMVAR_ID_MAX + 1]; RRDDIMVAR *rs = (RRDDIMVAR *)callocz(1, sizeof(RRDDIMVAR)); rs->prefix = strdupz(prefix); rs->suffix = strdupz(suffix); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->id, rs->suffix); rs->id = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix); rs->name = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->id, rs->id); rs->fullidid = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->id, rs->name); rs->fullidname = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->name, rs->id); rs->fullnameid = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->name, rs->name); rs->fullnamename = strdupz(buffer); rs->type = type; rs->value = value; rs->options = options; rs->rrddim = rd; rs->local_id = rrdvar_create_and_index("local", &st->variables_root_index, rs->id, rs->type, rs->value); rs->local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value); rs->family_id = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->id, rs->type, rs->value); rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->name, rs->type, rs->value); rs->host_fullidid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidid, rs->type, rs->value); rs->host_fullidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidname, rs->type, rs->value); rs->host_fullnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnameid, rs->type, rs->value); rs->host_fullnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnamename, rs->type, rs->value); rs->next = rd->variables; rd->variables = rs; return rs; } void rrddimvar_rename_all(RRDDIM *rd) { RRDSET *st = rd->rrdset; debug(D_VARIABLES, "RRDDIMSET rename for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name); RRDDIMVAR *rs, *next = rd->variables; while((rs = next)) { next = rs->next; if (strcmp(rd->name, rs->name)) { char buffer[RRDDIMVAR_ID_MAX + 1]; // name changed // name rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name); freez(rs->name); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix); rs->name = strdupz(buffer); rs->local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname); freez(rs->fullidname); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->name); rs->fullidname = strdupz(buffer); rs->host_fullidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidname, rs->type, rs->value); // fullnameid rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid); freez(rs->fullnameid); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->id); rs->fullnameid = strdupz(buffer); rs->host_fullnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnameid, rs->type, rs->value); // fullnamename rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename); freez(rs->fullnamename); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->name); rs->fullnamename = strdupz(buffer); rs->host_fullnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnamename, rs->type, rs->value); } } } void rrddimvar_free(RRDDIMVAR *rs) { RRDDIM *rd = rs->rrddim; RRDSET *st = rd->rrdset; 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); rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_id); rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name); rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_id); rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidid); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid); rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename); if(rd->variables == rs) { 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); rd->variables = rs->next; } else { 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); RRDDIMVAR *t; for (t = rd->variables; t && t->next != rs; t = t->next) ; if(!t) error("RRDDIMVAR '%s' not found in dimension '%s/%s' variables linked list", rs->name, st->id, rd->id); else t->next = rs->next; } freez(rs->prefix); freez(rs->suffix); freez(rs->id); freez(rs->name); freez(rs->fullidid); freez(rs->fullidname); freez(rs->fullnameid); freez(rs->fullnamename); freez(rs); } // ---------------------------------------------------------------------------- // RRDCALC management static inline const char *rrdcalc_status2string(int status) { switch(status) { case RRDCALC_STATUS_UNINITIALIZED: return "UNINITIALIZED"; case RRDCALC_STATUS_UNDEFINED: return "UNDEFINED"; case RRDCALC_STATUS_CLEAR: return "CLEAR"; case RRDCALC_STATUS_RAISED: return "RAISED"; case RRDCALC_STATUS_WARNING: return "WARNING"; case RRDCALC_STATUS_CRITICAL: return "CRITICAL"; default: return "UNKNOWN"; } } static void rrdsetcalc_link(RRDSET *st, RRDCALC *rc) { 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); rc->last_status_change = time(NULL); rc->rrdset = st; rc->rrdset_next = st->alarms; rc->rrdset_prev = NULL; st->alarms = rc; if(rc->update_every < rc->rrdset->update_every) { 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); rc->update_every = rc->rrdset->update_every; } if(!isnan(rc->green) && isnan(st->green)) { debug(D_HEALTH, "Health alarm '%s.%s' green threshold set from %Lf to %Lf.", rc->rrdset->id, rc->name, rc->rrdset->green, rc->green); st->green = rc->green; } if(!isnan(rc->red) && isnan(st->red)) { debug(D_HEALTH, "Health alarm '%s.%s' red threshold set from %Lf to %Lf.", rc->rrdset->id, rc->name, rc->rrdset->red, rc->red); st->red = rc->red; } rc->local = rrdvar_create_and_index("local", &st->variables_root_index, rc->name, RRDVAR_TYPE_CALCULATED, &rc->value); rc->family = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rc->name, RRDVAR_TYPE_CALCULATED, &rc->value); char fullname[RRDVAR_MAX_LENGTH + 1]; snprintfz(fullname, RRDVAR_MAX_LENGTH, "%s.%s", st->id, rc->name); rc->hostid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, fullname, RRDVAR_TYPE_CALCULATED, &rc->value); snprintfz(fullname, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rc->name); rc->hostname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, fullname, RRDVAR_TYPE_CALCULATED, &rc->value); if(!rc->units) rc->units = strdupz(st->units); } static inline int rrdcalc_is_matching_this_rrdset(RRDCALC *rc, RRDSET *st) { if( (rc->hash_chart == st->hash && !strcmp(rc->chart, st->id)) || (rc->hash_chart == st->hash_name && !strcmp(rc->chart, st->name))) return 1; return 0; } // this has to be called while the RRDHOST is locked inline void rrdsetcalc_link_matching(RRDSET *st) { // debug(D_HEALTH, "find matching alarms for chart '%s'", st->id); RRDCALC *rc; for(rc = st->rrdhost->alarms; rc ; rc = rc->next) { if(rc->rrdset) continue; if(rrdcalc_is_matching_this_rrdset(rc, st)) rrdsetcalc_link(st, rc); } } // this has to be called while the RRDHOST is locked inline void rrdsetcalc_unlink(RRDCALC *rc) { RRDSET *st = rc->rrdset; if(!st) { error("Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rc->chart?rc->chart:"NOCHART", rc->name); return; } RRDHOST *host = st->rrdhost; 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); // unlink it if(rc->rrdset_prev) rc->rrdset_prev->rrdset_next = rc->rrdset_next; if(rc->rrdset_next) rc->rrdset_next->rrdset_prev = rc->rrdset_prev; if(st->alarms == rc) st->alarms = rc->rrdset_next; rc->rrdset_prev = rc->rrdset_next = NULL; rrdvar_free(st->rrdhost, &st->variables_root_index, rc->local); rc->local = NULL; rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rc->family); rc->family = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rc->hostid); rc->hostid = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rc->hostname); rc->hostname = NULL; rc->rrdset = NULL; // RRDCALC will remain in RRDHOST // so that if the matching chart is found in the future // it will be applied automatically } RRDCALC *rrdcalc_find(RRDSET *st, const char *name) { RRDCALC *rc; uint32_t hash = simple_hash(name); for( rc = st->alarms; rc ; rc = rc->rrdset_next ) { if(rc->hash == hash && !strcmp(rc->name, name)) return rc; } return NULL; } static inline int rrdcalc_exists(RRDHOST *host, const char *name, uint32_t hash) { RRDCALC *rc; // make sure it does not already exist for(rc = host->alarms; rc ; rc = rc->next) { if (rc->hash == hash && !strcmp(name, rc->name)) { error("Health alarm '%s' already exists in host '%s'.", name, host->hostname); return 1; } } return 0; } static inline void rrdcalc_create_part2(RRDHOST *host, RRDCALC *rc) { rrdhost_check_rdlock(host); if(rc->calculation) { rc->calculation->this = &rc->value; rc->calculation->after = &rc->db_after; rc->calculation->before = &rc->db_before; rc->calculation->rrdcalc = rc; } if(rc->warning) { rc->warning->this = &rc->value; rc->warning->after = &rc->db_after; rc->warning->before = &rc->db_before; rc->warning->rrdcalc = rc; } if(rc->critical) { rc->critical->this = &rc->value; rc->critical->after = &rc->db_after; rc->critical->before = &rc->db_before; rc->critical->rrdcalc = rc; } // link it to the host rc->next = host->alarms; host->alarms = rc; // link it to its chart RRDSET *st; for(st = host->rrdset_root; st ; st = st->next) { if(rrdcalc_is_matching_this_rrdset(rc, st)) { rrdsetcalc_link(st, rc); break; } } } static inline uint32_t rrdcalc_fullname(char *fullname, size_t len, const char *chart, const char *name) { snprintfz(fullname, len - 1, "%s%s%s", chart?chart:"", chart?".":"", name); rrdvar_fix_name(fullname); return simple_hash(fullname); } static inline RRDCALC *rrdcalc_create(RRDHOST *host, const char *name, const char *chart, const char *dimensions, const char *units, const char *info, int group_method, int after, int before, int update_every, uint32_t options, calculated_number green, calculated_number red, const char *exec, const char *source, const char *calc, const char *warn, const char *crit) { char fullname[RRDVAR_MAX_LENGTH + 1]; uint32_t hash = rrdcalc_fullname(fullname, RRDVAR_MAX_LENGTH + 1, chart, name); if(rrdcalc_exists(host, fullname, hash)) return NULL; RRDCALC *rc = callocz(1, sizeof(RRDCALC)); rc->name = strdupz(name); rc->hash = simple_hash(rc->name); rc->chart = strdupz(chart); rc->hash_chart = simple_hash(rc->chart); if(dimensions) rc->dimensions = strdupz(dimensions); rc->green = green; rc->red = red; rc->value = NAN; rc->old_value = NAN; rc->group = group_method; rc->after = after; rc->before = before; rc->update_every = update_every; rc->options = options; if(exec) rc->exec = strdupz(exec); if(source) rc->source = strdupz(source); if(units) rc->units = strdupz(units); if(info) rc->info = strdupz(info); if(calc) { rc->calculation = expression_parse(calc, NULL, NULL); if(!rc->calculation) error("Health alarm '%s.%s': failed to parse calculation expression '%s'", chart, name, calc); } if(warn) { rc->warning = expression_parse(warn, NULL, NULL); if(!rc->warning) error("Health alarm '%s.%s': failed to re-parse warning expression '%s'", chart, name, warn); } if(crit) { rc->critical = expression_parse(crit, NULL, NULL); if(!rc->critical) error("Health alarm '%s.%s': failed to re-parse critical expression '%s'", chart, name, crit); } debug(D_HEALTH, "Health runtime added alarm '%s.%s': exec '%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", (rc->chart)?rc->chart:"NOCHART", rc->name, (rc->exec)?rc->exec:"DEFAULT", rc->green, rc->red, rc->group, rc->after, rc->before, rc->options, (rc->dimensions)?rc->dimensions:"NONE", rc->update_every, (rc->calculation)?rc->calculation->parsed_as:"NONE", (rc->warning)?rc->warning->parsed_as:"NONE", (rc->critical)?rc->critical->parsed_as:"NONE", rc->source ); rrdcalc_create_part2(host, rc); return rc; } void rrdcalc_free(RRDHOST *host, RRDCALC *rc) { if(!rc) return; debug(D_HEALTH, "Health removing alarm '%s.%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname); // unlink it from RRDSET if(rc->rrdset) rrdsetcalc_unlink(rc); // unlink it from RRDHOST if(rc == host->alarms) host->alarms = rc->next; else if(host->alarms) { RRDCALC *t, *last = host->alarms; for(t = last->next; t && t != rc; last = t, t = t->next) ; if(last && last->next == rc) last->next = rc->next; else error("Cannot unlink alarm '%s.%s' from host '%s': not found", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname); } else 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); expression_free(rc->calculation); expression_free(rc->warning); expression_free(rc->critical); freez(rc->name); freez(rc->chart); freez(rc->family); freez(rc->dimensions); freez(rc->exec); freez(rc->source); freez(rc->units); freez(rc->info); freez(rc); } // ---------------------------------------------------------------------------- // RRDCALCTEMPLATE management void rrdcalctemplate_link_matching(RRDSET *st) { RRDCALCTEMPLATE *rt; for(rt = st->rrdhost->templates; rt ; rt = rt->next) { if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context)) { RRDCALC *rc = rrdcalc_create(st->rrdhost, rt->name, st->id, rt->dimensions, rt->units, rt->info, rt->group, rt->after, rt->before, rt->update_every, rt->options, rt->green, rt->red, rt->exec, rt->source, (rt->calculation)?rt->calculation->source:NULL, (rt->warning)?rt->warning->source:NULL, (rt->critical)?rt->critical->source:NULL); if(!rc) error("Health tried to create alarm from template '%s', but it failed", rt->name); #ifdef NETDATA_INTERNAL_CHECKS else if(rc->rrdset != st) error("Health alarm '%s.%s' should be linked to chart '%s', but it is not", rc->chart?rc->chart:"NOCHART", rc->name, st->id); #else (void)rc; #endif } } } static inline void rrdcalctemplate_free(RRDHOST *host, RRDCALCTEMPLATE *rt) { debug(D_HEALTH, "Health removing template '%s' of host '%s'", rt->name, host->hostname); if(host->templates) { if(host->templates == rt) { host->templates = rt->next; } else { RRDCALCTEMPLATE *t, *last = host->templates; for (t = last->next; t && t != rt; last = t, t = t->next ) ; if(last && last->next == rt) { last->next = rt->next; rt->next = NULL; } else error("Cannot find RRDCALCTEMPLATE '%s' linked in host '%s'", rt->name, host->hostname); } } expression_free(rt->calculation); expression_free(rt->warning); expression_free(rt->critical); freez(rt->name); freez(rt->exec); freez(rt->context); freez(rt->source); freez(rt->units); freez(rt->info); freez(rt->dimensions); freez(rt); } // ---------------------------------------------------------------------------- // load health configuration #define HEALTH_CONF_MAX_LINE 4096 #define HEALTH_ALARM_KEY "alarm" #define HEALTH_TEMPLATE_KEY "template" #define HEALTH_ON_KEY "on" #define HEALTH_LOOKUP_KEY "lookup" #define HEALTH_CALC_KEY "calc" #define HEALTH_EVERY_KEY "every" #define HEALTH_GREEN_KEY "green" #define HEALTH_RED_KEY "red" #define HEALTH_WARN_KEY "warn" #define HEALTH_CRIT_KEY "crit" #define HEALTH_EXEC_KEY "exec" #define HEALTH_UNITS_KEY "units" #define HEALTH_INFO_KEY "info" static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) { { char fullname[RRDVAR_MAX_LENGTH + 1]; uint32_t hash = rrdcalc_fullname(fullname, RRDVAR_MAX_LENGTH + 1, rc->chart, rc->name); if (rrdcalc_exists(host, fullname, hash)) return 0; } if(!rc->chart) { error("Health configuration for alarm '%s' does not have a chart", rc->name); return 0; } if(!rc->update_every) { error("Health configuration for alarm '%s.%s' has no frequency (parameter 'every'). Ignoring it.", rc->chart?rc->chart:"NOCHART", rc->name); return 0; } if(!RRDCALC_HAS_DB_LOOKUP(rc) && !rc->warning && !rc->critical) { error("Health configuration for alarm '%s.%s' is useless (no calculation, no warning and no critical evaluation)", rc->chart?rc->chart:"NOCHART", rc->name); return 0; } debug(D_HEALTH, "Health configuration adding alarm '%s.%s': exec '%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", rc->chart?rc->chart:"NOCHART", rc->name, (rc->exec)?rc->exec:"DEFAULT", rc->green, rc->red, rc->group, rc->after, rc->before, rc->options, (rc->dimensions)?rc->dimensions:"NONE", rc->update_every, (rc->calculation)?rc->calculation->parsed_as:"NONE", (rc->warning)?rc->warning->parsed_as:"NONE", (rc->critical)?rc->critical->parsed_as:"NONE", rc->source ); rrdcalc_create_part2(host, rc); return 1; } static inline int rrdcalctemplate_add_template_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) { if(!rt->context) { error("Health configuration for template '%s' does not have a context", rt->name); return 0; } if(!rt->update_every) { error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rt->name); return 0; } if(!RRDCALCTEMPLATE_HAS_CALCULATION(rt) && !rt->warning && !rt->critical) { error("Health configuration for template '%s' is useless (no calculation, no warning and no critical evaluation)", rt->name); return 0; } RRDCALCTEMPLATE *t; for (t = host->templates; t ; t = t->next) { if(t->hash_name == rt->hash_name && !strcmp(t->name, rt->name)) { error("Health configuration template '%s' already exists for host '%s'.", rt->name, host->hostname); return 0; } } debug(D_HEALTH, "Health configuration adding template '%s': context '%s', exec '%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'", rt->name, (rt->context)?rt->context:"NONE", (rt->exec)?rt->exec:"DEFAULT", rt->green, rt->red, rt->group, rt->after, rt->before, rt->options, (rt->dimensions)?rt->dimensions:"NONE", rt->update_every, (rt->calculation)?rt->calculation->parsed_as:"NONE", (rt->warning)?rt->warning->parsed_as:"NONE", (rt->critical)?rt->critical->parsed_as:"NONE", rt->source ); rt->next = host->templates; host->templates = rt; return 1; } static inline int health_parse_duration(char *string, int *result) { // make sure it is a number if(!*string || !(isdigit(*string) || *string == '+' || *string == '-')) { *result = 0; return 0; } char *e = NULL; calculated_number n = strtold(string, &e); if(e && *e) { switch (*e) { case 'Y': *result = (int) (n * 86400 * 365); break; case 'M': *result = (int) (n * 86400 * 30); break; case 'w': *result = (int) (n * 86400 * 7); break; case 'd': *result = (int) (n * 86400); break; case 'h': *result = (int) (n * 3600); break; case 'm': *result = (int) (n * 60); break; default: case 's': *result = (int) (n); break; } } else *result = (int)(n); return 1; } static inline int health_parse_db_lookup( size_t line, const char *path, const char *file, char *string, int *group_method, int *after, int *before, int *every, uint32_t *options, char **dimensions ) { debug(D_HEALTH, "Health configuration parsing database lookup %zu@%s/%s: %s", line, path, file, string); if(*dimensions) freez(*dimensions); *dimensions = NULL; *after = 0; *before = 0; *every = 0; *options = 0; char *s = string, *key; // first is the group method key = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if(!*s) { error("Health configuration invalid chart calculation at line %zu of file '%s/%s': expected group method followed by the 'after' time, but got '%s'", line, path, file, key); return 0; } if((*group_method = web_client_api_request_v1_data_group(key, -1)) == -1) { error("Health configuration at line %zu of file '%s/%s': invalid group method '%s'", line, path, file, key); return 0; } // then is the 'after' time key = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if(!health_parse_duration(key, after)) { error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' after group method", line, path, file, key); return 0; } // sane defaults *every = abs(*after); // now we may have optional parameters while(*s) { key = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if(!*key) break; if(!strcasecmp(key, "at")) { char *value = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if (!health_parse_duration(value, before)) { error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword", line, path, file, value, key); } } else if(!strcasecmp(key, HEALTH_EVERY_KEY)) { char *value = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if (!health_parse_duration(value, every)) { error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword", line, path, file, value, key); } } else if(!strcasecmp(key, "absolute") || !strcasecmp(key, "abs") || !strcasecmp(key, "absolute_sum")) { *options |= RRDR_OPTION_ABSOLUTE; } else if(!strcasecmp(key, "min2max")) { *options |= RRDR_OPTION_MIN2MAX; } else if(!strcasecmp(key, "null2zero")) { *options |= RRDR_OPTION_NULL2ZERO; } else if(!strcasecmp(key, "percentage")) { *options |= RRDR_OPTION_PERCENTAGE; } else if(!strcasecmp(key, "unaligned")) { *options |= RRDR_OPTION_NOT_ALIGNED; } else if(!strcasecmp(key, "of")) { if(*s && strcasecmp(s, "all")) *dimensions = strdupz(s); break; } else { error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'", line, path, file, key); } } return 1; } static inline char *health_source_file(size_t line, const char *path, const char *filename) { char buffer[FILENAME_MAX + 1]; snprintfz(buffer, FILENAME_MAX, "%zu@%s/%s", line, path, filename); return strdupz(buffer); } static inline void strip_quotes(char *s) { while(*s) { if(*s == '\'' || *s == '"') *s = ' '; s++; } } int health_readfile(const char *path, const char *filename) { debug(D_HEALTH, "Health configuration reading file '%s/%s'", path, filename); 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; char buffer[HEALTH_CONF_MAX_LINE + 1]; if(unlikely(!hash_alarm)) { hash_alarm = simple_uhash(HEALTH_ALARM_KEY); hash_template = simple_uhash(HEALTH_TEMPLATE_KEY); hash_on = simple_uhash(HEALTH_ON_KEY); hash_calc = simple_uhash(HEALTH_CALC_KEY); hash_lookup = simple_uhash(HEALTH_LOOKUP_KEY); hash_green = simple_uhash(HEALTH_GREEN_KEY); hash_red = simple_uhash(HEALTH_RED_KEY); hash_warn = simple_uhash(HEALTH_WARN_KEY); hash_crit = simple_uhash(HEALTH_CRIT_KEY); hash_exec = simple_uhash(HEALTH_EXEC_KEY); hash_every = simple_uhash(HEALTH_EVERY_KEY); hash_units = simple_hash(HEALTH_UNITS_KEY); hash_info = simple_hash(HEALTH_INFO_KEY); } snprintfz(buffer, HEALTH_CONF_MAX_LINE, "%s/%s", path, filename); FILE *fp = fopen(buffer, "r"); if(!fp) { error("Health configuration cannot read file '%s'.", buffer); return 0; } RRDCALC *rc = NULL; RRDCALCTEMPLATE *rt = NULL; size_t line = 0, append = 0; char *s; while((s = fgets(&buffer[append], (int)(HEALTH_CONF_MAX_LINE - append), fp)) || append) { int stop_appending = !s; line++; // info("Line %zu of file '%s/%s': '%s'", line, path, filename, s); s = trim(buffer); if(!s) continue; // info("Trimmed line %zu of file '%s/%s': '%s'", line, path, filename, s); append = strlen(s); if(!stop_appending && s[append - 1] == '\\') { s[append - 1] = ' '; append = &s[append] - buffer; if(append < HEALTH_CONF_MAX_LINE) continue; else { error("Health configuration has too long muli-line at line %zu of file '%s/%s'.", line, path, filename); } } append = 0; char *key = s; while(*s && *s != ':') s++; if(!*s) { error("Health configuration has invalid line %zu of file '%s/%s'. It does not contain a ':'. Ignoring it.", line, path, filename); continue; } *s = '\0'; s++; char *value = s; key = trim(key); value = trim(value); if(!key) { error("Health configuration has invalid line %zu of file '%s/%s'. Keyword is empty. Ignoring it.", line, path, filename); continue; } if(!value) { error("Health configuration has invalid line %zu of file '%s/%s'. value is empty. Ignoring it.", line, path, filename); continue; } // info("Health file '%s/%s', key '%s', value '%s'", path, filename, key, value); uint32_t hash = simple_uhash(key); if(hash == hash_alarm && !strcasecmp(key, HEALTH_ALARM_KEY)) { if(rc && !rrdcalc_add_alarm_from_config(&localhost, rc)) rrdcalc_free(&localhost, rc); if(rt) { if (!rrdcalctemplate_add_template_from_config(&localhost, rt)) rrdcalctemplate_free(&localhost, rt); rt = NULL; } rc = callocz(1, sizeof(RRDCALC)); rc->name = strdupz(value); rc->hash = simple_hash(rc->name); rc->source = health_source_file(line, path, filename); rc->green = NAN; rc->red = NAN; rc->value = NAN; rc->old_value = NAN; if(rrdvar_fix_name(rc->name)) error("Health configuration renamed alarm '%s' to '%s'", value, rc->name); } else if(hash == hash_template && !strcasecmp(key, HEALTH_TEMPLATE_KEY)) { if(rc) { if(!rrdcalc_add_alarm_from_config(&localhost, rc)) rrdcalc_free(&localhost, rc); rc = NULL; } if(rt && !rrdcalctemplate_add_template_from_config(&localhost, rt)) rrdcalctemplate_free(&localhost, rt); rt = callocz(1, sizeof(RRDCALCTEMPLATE)); rt->name = strdupz(value); rt->hash_name = simple_hash(rt->name); rt->source = health_source_file(line, path, filename); rt->green = NAN; rt->red = NAN; if(rrdvar_fix_name(rt->name)) error("Health configuration renamed template '%s' to '%s'", value, rt->name); } else if(rc) { if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) { if(rc->chart) { if(strcmp(rc->chart, value)) 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').", line, path, filename, rc->name, key, rc->chart, value, value); freez(rc->chart); } rc->chart = strdupz(value); rc->hash_chart = simple_hash(rc->chart); } else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) { health_parse_db_lookup(line, path, filename, value, &rc->group, &rc->after, &rc->before, &rc->update_every, &rc->options, &rc->dimensions); } else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) { if(!health_parse_duration(value, &rc->update_every)) info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' cannot parse duration: '%s'.", line, path, filename, rc->name, key, value); } else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) { char *e; rc->green = strtold(value, &e); if(e && *e) { info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.", line, path, filename, rc->name, key, e); } } else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) { char *e; rc->red = strtold(value, &e); if(e && *e) { info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.", line, path, filename, rc->name, key, e); } } else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) { const char *failed_at = NULL; int error = 0; rc->calculation = expression_parse(value, &failed_at, &error); if(!rc->calculation) { error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'", line, path, filename, rc->name, key, value, expression_strerror(error), failed_at); } } else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) { const char *failed_at = NULL; int error = 0; rc->warning = expression_parse(value, &failed_at, &error); if(!rc->warning) { error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'", line, path, filename, rc->name, key, value, expression_strerror(error), failed_at); } } else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) { const char *failed_at = NULL; int error = 0; rc->critical = expression_parse(value, &failed_at, &error); if(!rc->critical) { error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'", line, path, filename, rc->name, key, value, expression_strerror(error), failed_at); } } else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) { if(rc->exec) { if(strcmp(rc->exec, value)) 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').", line, path, filename, rc->name, key, rc->exec, value, value); freez(rc->exec); } rc->exec = strdupz(value); } else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) { if(rc->units) { if(strcmp(rc->units, value)) 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').", line, path, filename, rc->name, key, rc->units, value, value); freez(rc->units); } rc->units = strdupz(value); strip_quotes(rc->units); } else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) { if(rc->info) { if(strcmp(rc->info, value)) 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').", line, path, filename, rc->name, key, rc->info, value, value); freez(rc->info); } rc->info = strdupz(value); strip_quotes(rc->info); } else { error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has unknown key '%s'.", line, path, filename, rc->name, key); } } else if(rt) { if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) { if(rt->context) { if(strcmp(rt->context, value)) 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').", line, path, filename, rt->name, key, rt->context, value, value); freez(rt->context); } rt->context = strdupz(value); rt->hash_context = simple_hash(rt->context); } else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) { health_parse_db_lookup(line, path, filename, value, &rt->group, &rt->after, &rt->before, &rt->update_every, &rt->options, &rt->dimensions); } else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) { if(!health_parse_duration(value, &rt->update_every)) info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' cannot parse duration: '%s'.", line, path, filename, rt->name, key, value); } else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) { char *e; rt->green = strtold(value, &e); if(e && *e) { info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.", line, path, filename, rt->name, key, e); } } else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) { char *e; rt->red = strtold(value, &e); if(e && *e) { info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.", line, path, filename, rt->name, key, e); } } else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) { const char *failed_at = NULL; int error = 0; rt->calculation = expression_parse(value, &failed_at, &error); if(!rt->calculation) { error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'", line, path, filename, rt->name, key, value, expression_strerror(error), failed_at); } } else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) { const char *failed_at = NULL; int error = 0; rt->warning = expression_parse(value, &failed_at, &error); if(!rt->warning) { error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'", line, path, filename, rt->name, key, value, expression_strerror(error), failed_at); } } else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) { const char *failed_at = NULL; int error = 0; rt->critical = expression_parse(value, &failed_at, &error); if(!rt->critical) { error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'", line, path, filename, rt->name, key, value, expression_strerror(error), failed_at); } } else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) { if(rt->exec) { if(strcmp(rt->exec, value)) 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').", line, path, filename, rt->name, key, rt->exec, value, value); freez(rt->exec); } rt->exec = strdupz(value); } else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) { if(rt->units) { if(strcmp(rt->units, value)) 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').", line, path, filename, rt->name, key, rt->units, value, value); freez(rt->units); } rt->units = strdupz(value); strip_quotes(rt->units); } else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) { if(rt->info) { if(strcmp(rt->info, value)) 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').", line, path, filename, rt->name, key, rt->info, value, value); freez(rt->info); } rt->info = strdupz(value); strip_quotes(rt->info); } else { error("Health configuration at line %zu of file '%s/%s' for template '%s' has unknown key '%s'.", line, path, filename, rt->name, key); } } else { error("Health configuration at line %zu of file '%s/%s' has unknown key '%s'. Expected either '" HEALTH_ALARM_KEY "' or '" HEALTH_TEMPLATE_KEY "'.", line, path, filename, key); } } if(rc && !rrdcalc_add_alarm_from_config(&localhost, rc)) rrdcalc_free(&localhost, rc); if(rt && !rrdcalctemplate_add_template_from_config(&localhost, rt)) rrdcalctemplate_free(&localhost, rt); fclose(fp); return 1; } void health_readdir(const char *path) { size_t pathlen = strlen(path); debug(D_HEALTH, "Health configuration reading directory '%s'", path); DIR *dir = opendir(path); if (!dir) { error("Health configuration cannot open directory '%s'.", path); return; } struct dirent *de = NULL; while ((de = readdir(dir))) { size_t len = strlen(de->d_name); if(de->d_type == DT_DIR && ( (de->d_name[0] == '.' && de->d_name[1] == '\0') || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0') )) continue; else if(de->d_type == DT_DIR) { char *s = mallocz(pathlen + strlen(de->d_name) + 2); strcpy(s, path); strcat(s, "/"); strcat(s, de->d_name); health_readdir(s); freez(s); continue; } else if((de->d_type == DT_LNK || de->d_type == DT_REG) && len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) { health_readfile(path, de->d_name); } } closedir(dir); } static inline char *health_config_dir(void) { char buffer[FILENAME_MAX + 1]; snprintfz(buffer, FILENAME_MAX, "%s/health.d", config_get("global", "config directory", CONFIG_DIR)); return config_get("health", "health configuration directory", buffer); } void health_init(void) { debug(D_HEALTH, "Health configuration initializing"); if(!(health_enabled = config_get_boolean("health", "enabled", 1))) { debug(D_HEALTH, "Health is disabled."); return; } char *path = health_config_dir(); { char buffer[FILENAME_MAX + 1]; snprintfz(buffer, FILENAME_MAX, "%s/alarm-email.sh", config_get("global", "plugins directory", PLUGINS_DIR)); health_default_exec = config_get("health", "script to execute on alarm", buffer); } long n = config_get_number("health", "in memory max health log entries", (long)localhost.health_log.max); if(n < 2) { error("Health configuration has invalid max log entries %ld. Using default %u", n, localhost.health_log.max); config_set_number("health", "in memory max health log entries", (long)localhost.health_log.max); } else localhost.health_log.max = (unsigned int)n; rrdhost_rwlock(&localhost); health_readdir(path); rrdhost_unlock(&localhost); } // ---------------------------------------------------------------------------- // JSON generation static inline void health_string2json(BUFFER *wb, const char *prefix, const char *label, const char *value, const char *suffix) { if(value && *value) buffer_sprintf(wb, "%s\"%s\":\"%s\"%s", prefix, label, value, suffix); else buffer_sprintf(wb, "%s\"%s\":null%s", prefix, label, suffix); } static inline void health_alarm_entry2json_nolock(BUFFER *wb, ALARM_ENTRY *ae) { buffer_sprintf(wb, "\n\t{\n" "\t\t\"id\":%u,\n" "\t\t\"name\":\"%s\",\n" "\t\t\"chart\":\"%s\",\n" "\t\t\"family\":\"%s\",\n" "\t\t\"processed\":%s,\n" "\t\t\"updated\":%s,\n" "\t\t\"exec_run\":%s,\n" "\t\t\"exec_failed\":%s,\n" "\t\t\"exec\":\"%s\",\n" "\t\t\"exec_code\":%d,\n" "\t\t\"source\":\"%s\",\n" "\t\t\"units\":\"%s\",\n" "\t\t\"info\":\"%s\",\n" "\t\t\"when\":%lu,\n" "\t\t\"duration\":%lu,\n" "\t\t\"non_clear_duration\":%lu,\n" "\t\t\"status\":\"%s\",\n" "\t\t\"old_status\":\"%s\",\n", ae->id, ae->name, ae->chart, ae->family, (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_PROCESSED)?"true":"false", (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED)?"true":"false", (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_EXEC_RUN)?"true":"false", (ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_EXEC_FAILED)?"true":"false", ae->exec?ae->exec:health_default_exec, ae->exec_code, ae->source, ae->units?ae->units:"", ae->info?ae->info:"", (unsigned long)ae->when, (unsigned long)ae->duration, (unsigned long)ae->non_clear_duration, rrdcalc_status2string(ae->new_status), rrdcalc_status2string(ae->old_status) ); buffer_strcat(wb, "\t\t\"value\":"); buffer_rrd_value(wb, ae->new_value); buffer_strcat(wb, ",\n"); buffer_strcat(wb, "\t\t\"old_value\":"); buffer_rrd_value(wb, ae->old_value); buffer_strcat(wb, "\n"); buffer_strcat(wb, "\t}"); } void health_alarm_log2json(RRDHOST *host, BUFFER *wb) { pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock); buffer_strcat(wb, "["); unsigned int max = host->health_log.max; unsigned int count = 0; ALARM_ENTRY *ae; for(ae = host->health_log.alarms; ae && count < max ; count++, ae = ae->next) { if(likely(count)) buffer_strcat(wb, ","); health_alarm_entry2json_nolock(wb, ae); } buffer_strcat(wb, "\n]\n"); pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); } static inline void health_rrdcalc2json_nolock(BUFFER *wb, RRDCALC *rc) { buffer_sprintf(wb, "\t\t\"%s.%s\": {\n" "\t\t\t\"name\": \"%s\",\n" "\t\t\t\"chart\": \"%s\",\n" "\t\t\t\"family\": \"%s\",\n" "\t\t\t\"active\": %s,\n" "\t\t\t\"exec\": \"%s\",\n" "\t\t\t\"source\": \"%s\",\n" "\t\t\t\"units\": \"%s\",\n" "\t\t\t\"info\": \"%s\",\n" "\t\t\t\"status\": \"%s\",\n" "\t\t\t\"last_status_change\": %lu,\n" "\t\t\t\"last_updated\": %lu,\n" "\t\t\t\"next_update\": %lu,\n" "\t\t\t\"update_every\": %d,\n" , rc->chart, rc->name , rc->name , rc->chart , (rc->rrdset && rc->rrdset->family)?rc->rrdset->family:"" , (rc->rrdset)?"true":"false" , rc->exec?rc->exec:health_default_exec , rc->source , rc->units?rc->units:"" , rc->info?rc->info:"" , rrdcalc_status2string(rc->status) , (unsigned long)rc->last_status_change , (unsigned long)rc->last_updated , (unsigned long)rc->next_update , rc->update_every ); if(RRDCALC_HAS_DB_LOOKUP(rc)) { if(rc->dimensions && *rc->dimensions) health_string2json(wb, "\t\t\t", "lookup_dimensions", rc->dimensions, ",\n"); buffer_sprintf(wb, "\t\t\t\"db_after\": %lu,\n" "\t\t\t\"db_before\": %lu,\n" "\t\t\t\"lookup_method\": \"%s\",\n" "\t\t\t\"lookup_after\": %d,\n" "\t\t\t\"lookup_before\": %d,\n" "\t\t\t\"lookup_options\": \"", (unsigned long) rc->db_after, (unsigned long) rc->db_before, group_method2string(rc->group), rc->after, rc->before ); buffer_data_options2string(wb, rc->options); buffer_strcat(wb, "\",\n"); } if(rc->calculation) { health_string2json(wb, "\t\t\t", "calc", rc->calculation->source, ",\n"); health_string2json(wb, "\t\t\t", "calc_parsed", rc->calculation->parsed_as, ",\n"); } if(rc->warning) { health_string2json(wb, "\t\t\t", "warn", rc->warning->source, ",\n"); health_string2json(wb, "\t\t\t", "warn_parsed", rc->warning->parsed_as, ",\n"); } if(rc->critical) { health_string2json(wb, "\t\t\t", "crit", rc->critical->source, ",\n"); health_string2json(wb, "\t\t\t", "crit_parsed", rc->critical->parsed_as, ",\n"); } buffer_strcat(wb, "\t\t\t\"green\":"); buffer_rrd_value(wb, rc->green); buffer_strcat(wb, ",\n"); buffer_strcat(wb, "\t\t\t\"red\":"); buffer_rrd_value(wb, rc->red); buffer_strcat(wb, ",\n"); buffer_strcat(wb, "\t\t\t\"value\":"); buffer_rrd_value(wb, rc->value); buffer_strcat(wb, "\n"); buffer_strcat(wb, "\t\t}"); } //void health_rrdcalctemplate2json_nolock(BUFFER *wb, RRDCALCTEMPLATE *rt) { // //} void health_alarms2json(RRDHOST *host, BUFFER *wb, int all) { int i; rrdhost_rdlock(&localhost); buffer_strcat(wb, "{\n\t\"alarms\": {\n"); RRDCALC *rc; for(i = 0, rc = host->alarms; rc ; rc = rc->next) { if(!rc->rrdset) continue; if(!all && !(rc->status == RRDCALC_STATUS_WARNING || rc->status == RRDCALC_STATUS_CRITICAL)) continue; if(likely(i)) buffer_strcat(wb, ",\n"); health_rrdcalc2json_nolock(wb, rc); i++; } // buffer_strcat(wb, "\n\t},\n\t\"templates\": {"); // RRDCALCTEMPLATE *rt; // for(rt = host->templates; rt ; rt = rt->next) // health_rrdcalctemplate2json_nolock(wb, rt); buffer_sprintf(wb, "\n\t},\n\t\"now\": %lu\n}\n", (unsigned long)time(NULL)); rrdhost_unlock(&localhost); } // ---------------------------------------------------------------------------- // re-load health configuration static inline void health_free_all_nolock(RRDHOST *host) { while(host->templates) rrdcalctemplate_free(host, host->templates); while(host->alarms) rrdcalc_free(host, host->alarms); } void health_reload(void) { if(!health_enabled) { error("Health reload is requested, but health is not enabled."); return; } char *path = health_config_dir(); rrdhost_rwlock(&localhost); health_free_all_nolock(&localhost); rrdhost_unlock(&localhost); RRDSET *st; for(st = localhost.rrdset_root; st ; st = st->next) { st->green = NAN; st->red = NAN; } rrdhost_rwlock(&localhost); health_readdir(path); rrdhost_unlock(&localhost); for(st = localhost.rrdset_root; st ; st = st->next) { rrdhost_rwlock(&localhost); rrdsetcalc_link_matching(st); rrdcalctemplate_link_matching(st); rrdhost_unlock(&localhost); } } // ---------------------------------------------------------------------------- // health main thread and friends static inline int rrdcalc_isrunnable(RRDCALC *rc, time_t now, time_t *next_run) { if (unlikely(!rc->rrdset)) { debug(D_HEALTH, "Health not running alarm '%s.%s'. It is not linked to a chart.", rc->chart?rc->chart:"NOCHART", rc->name); return 0; } if (unlikely(!rc->update_every)) { debug(D_HEALTH, "Health not running alarm '%s.%s'. It does not have an update frequency", rc->chart?rc->chart:"NOCHART", rc->name); return 0; } if (unlikely(rc->next_update > now)) { if (*next_run > rc->next_update) *next_run = rc->next_update; 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)); return 0; } return 1; } static inline int rrdcalc_value2status(calculated_number n) { if(isnan(n)) return RRDCALC_STATUS_UNDEFINED; if(n) return RRDCALC_STATUS_RAISED; return RRDCALC_STATUS_CLEAR; } static inline void health_alarm_execute(ALARM_ENTRY *ae) { if(ae->old_status == RRDCALC_STATUS_UNINITIALIZED && ae->new_status == RRDCALC_STATUS_CLEAR) return; char buffer[FILENAME_MAX + 1]; pid_t command_pid; const char *exec = ae->exec; if(!exec) exec = health_default_exec; snprintfz(buffer, FILENAME_MAX, "exec %s '%s' '%s' '%s' '%s' '%s' '%0.0Lf' '%0.0Lf' '%s' '%u' '%u' '%s' '%s'", exec, ae->name, ae->chart?ae->chart:"NOCAHRT", ae->family?ae->family:"NOFAMILY", rrdcalc_status2string(ae->new_status), rrdcalc_status2string(ae->old_status), ae->new_value, ae->old_value, ae->source?ae->source:"UNKNOWN", (uint32_t)ae->duration, (uint32_t)ae->non_clear_duration, ae->units?ae->units:"", ae->info?ae->info:"" ); ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_EXEC_RUN; debug(D_HEALTH, "executing command '%s'", buffer); FILE *fp = mypopen(buffer, &command_pid); if(!fp) { error("HEALTH: Cannot popen(\"%s\", \"r\").", buffer); return; } debug(D_HEALTH, "HEALTH reading from command"); char *s = fgets(buffer, FILENAME_MAX, fp); (void)s; debug(D_HEALTH, "HEALTH closing command"); ae->exec_code = mypclose(fp, command_pid); debug(D_HEALTH, "done executing command - returned with code %d", ae->exec_code); if(ae->exec_code != 0) ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_EXEC_FAILED; } static inline void health_process_notifications(ALARM_ENTRY *ae) { info("Health alarm '%s.%s' = %0.2Lf - changed status from %s to %s", ae->chart?ae->chart:"NOCHART", ae->name, ae->new_value, rrdcalc_status2string(ae->old_status), rrdcalc_status2string(ae->new_status) ); health_alarm_execute(ae); } static inline void health_alarm_log(RRDHOST *host, time_t when, const char *name, const char *chart, const char *family, const char *exec, time_t duration, calculated_number old_value, calculated_number new_value, int old_status, int new_status, const char *source, const char *units, const char *info ) { ALARM_ENTRY *ae = callocz(1, sizeof(ALARM_ENTRY)); ae->name = strdupz(name); ae->hash_name = simple_hash(ae->name); if(chart) { ae->chart = strdupz(chart); ae->hash_chart = simple_hash(ae->chart); } if(family) ae->family = strdupz(family); if(exec) ae->exec = strdupz(exec); if(source) ae->source = strdupz(source); if(units) ae->units = strdupz(units); if(info) ae->info = strdupz(info); ae->id = host->health_log.nextid++; ae->when = when; ae->old_value = old_value; ae->new_value = new_value; ae->old_status = old_status; ae->new_status = new_status; ae->duration = duration; if(ae->old_status == RRDCALC_STATUS_WARNING || ae->old_status == RRDCALC_STATUS_CRITICAL) ae->non_clear_duration += ae->duration; // link it pthread_rwlock_wrlock(&host->health_log.alarm_log_rwlock); ae->next = host->health_log.alarms; host->health_log.alarms = ae; host->health_log.count++; pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); // match previous alarms pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock); ALARM_ENTRY *t; for(t = host->health_log.alarms ; t ; t = t->next) { if(t != ae && t->hash_name == ae->hash_name && t->hash_chart == ae->hash_chart && !strcmp(t->name, ae->name) && t->chart && ae->chart && !strcmp(t->chart, ae->chart)) { if(!(t->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED) && !t->updated_by) { t->notifications |= HEALTH_ENTRY_NOTIFICATIONS_UPDATED; t->updated_by = ae; if((t->new_status == RRDCALC_STATUS_WARNING || t->new_status == RRDCALC_STATUS_CRITICAL) && (t->old_status == RRDCALC_STATUS_WARNING || t->old_status == RRDCALC_STATUS_CRITICAL)) ae->non_clear_duration += t->non_clear_duration; } else { // no need to continue break; } } } pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); } static inline void health_alarm_log_process(RRDHOST *host) { static uint32_t last_processed = 0; ALARM_ENTRY *ae; pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock); for(ae = host->health_log.alarms; ae ;ae = ae->next) { if(last_processed >= ae->id) break; if(!(ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_PROCESSED) && !(ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED)) { ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_PROCESSED; health_process_notifications(ae); } } if(host->health_log.alarms) last_processed = host->health_log.alarms->id; pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); if(host->health_log.count <= host->health_log.max) return; // cleanup excess entries in the log pthread_rwlock_wrlock(&host->health_log.alarm_log_rwlock); ALARM_ENTRY *last = NULL; unsigned int count = host->health_log.max; for(ae = host->health_log.alarms; ae && count ; count--, last = ae, ae = ae->next) ; if(ae && last && last->next == ae) last->next = NULL; else ae = NULL; while(ae) { ALARM_ENTRY *t = ae->next; freez(ae->name); freez(ae->chart); freez(ae->family); freez(ae->exec); freez(ae->source); freez(ae->units); freez(ae->info); freez(ae); ae = t; } pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); } void *health_main(void *ptr) { (void)ptr; info("HEALTH thread created with task id %d", gettid()); if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0) error("Cannot set pthread cancel type to DEFERRED."); if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) error("Cannot set pthread cancel state to ENABLE."); int min_run_every = (int)config_get_number("health", "run at least every seconds", 10); if(min_run_every < 1) min_run_every = 1; BUFFER *wb = buffer_create(100); unsigned int loop = 0; while(health_enabled) { loop++; debug(D_HEALTH, "Health monitoring iteration no %u started", loop); int oldstate, runnable = 0; time_t now = time(NULL); time_t next_run = now + min_run_every; RRDCALC *rc; if (unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 0)) error("Cannot set pthread cancel state to DISABLE."); rrdhost_rdlock(&localhost); // the first loop is to lookup values from the db for (rc = localhost.alarms; rc; rc = rc->next) { if (unlikely(!rrdcalc_isrunnable(rc, now, &next_run))) continue; runnable++; rc->old_value = rc->value; // 1. if there is database lookup, do it // 2. if there is calculation expression, run it if (unlikely(RRDCALC_HAS_DB_LOOKUP(rc))) { time_t old_db_timestamp = rc->db_before; int value_is_null = 0; int ret = rrd2value(rc->rrdset, wb, &rc->value, rc->dimensions, 1, rc->after, rc->before, rc->group, rc->options, &rc->db_after, &rc->db_before, &value_is_null); if (unlikely(ret != 200)) { // database lookup failed rc->value = NAN; debug(D_HEALTH, "Health alarm '%s.%s': database lookup returned error %d", rc->chart?rc->chart:"NOCHART", rc->name, ret); if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_ERROR))) { rc->rrdcalc_flags |= RRDCALC_FLAG_DB_ERROR; error("Health alarm '%s.%s': database lookup returned error %d", rc->chart?rc->chart:"NOCHART", rc->name, ret); } } else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_ERROR)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_ERROR; if (unlikely(old_db_timestamp == rc->db_before)) { // database is stale debug(D_HEALTH, "Health alarm '%s.%s': database is stale", rc->chart?rc->chart:"NOCHART", rc->name); if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE))) { rc->rrdcalc_flags |= RRDCALC_FLAG_DB_STALE; error("Health alarm '%s.%s': database is stale", rc->chart?rc->chart:"NOCHART", rc->name); } } else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_STALE; if (unlikely(value_is_null)) { // collected value is null rc->value = NAN; debug(D_HEALTH, "Health alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)", rc->chart?rc->chart:"NOCHART", rc->name); if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_NAN))) { rc->rrdcalc_flags |= RRDCALC_FLAG_DB_NAN; error("Health alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)", rc->chart?rc->chart:"NOCHART", rc->name); } } else if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_NAN)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_NAN; debug(D_HEALTH, "Health alarm '%s.%s': database lookup gave value " CALCULATED_NUMBER_FORMAT, rc->chart?rc->chart:"NOCHART", rc->name, rc->value); } if(unlikely(rc->calculation)) { if (unlikely(!expression_evaluate(rc->calculation))) { // calculation failed rc->value = NAN; debug(D_HEALTH, "Health alarm '%s.%s': failed to evaluate calculation with error: %s", rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->calculation->error_msg)); if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_CALC_ERROR))) { rc->rrdcalc_flags |= RRDCALC_FLAG_CALC_ERROR; error("Health alarm '%s.%s': failed to evaluate calculation with error: %s", rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->calculation->error_msg)); } } else { if (unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_CALC_ERROR)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_CALC_ERROR; debug(D_HEALTH, "Health alarm '%s.%s': calculation expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)", rc->chart?rc->chart:"NOCHART", rc->name, rc->calculation->result, buffer_tostring(rc->calculation->error_msg), rc->source ); rc->value = rc->calculation->result; } } } rrdhost_unlock(&localhost); if (runnable) { rrdhost_rdlock(&localhost); for (rc = localhost.alarms; rc; rc = rc->next) { if (unlikely(!rrdcalc_isrunnable(rc, now, &next_run))) continue; int warning_status = RRDCALC_STATUS_UNDEFINED; int critical_status = RRDCALC_STATUS_UNDEFINED; if(unlikely(rc->warning)) { if(unlikely(!expression_evaluate(rc->warning))) { // calculation failed debug(D_HEALTH, "Health alarm '%s.%s': warning expression failed with error: %s", rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->warning->error_msg)); if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_WARN_ERROR))) { rc->rrdcalc_flags |= RRDCALC_FLAG_WARN_ERROR; error("Health alarm '%s.%s': warning expression failed with error: %s", rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->warning->error_msg)); } } else { if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_WARN_ERROR)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_WARN_ERROR; debug(D_HEALTH, "Health alarm '%s.%s': warning expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)", rc->chart?rc->chart:"NOCHART", rc->name, rc->warning->result, buffer_tostring(rc->warning->error_msg), rc->source ); warning_status = rrdcalc_value2status(rc->warning->result); } } if(unlikely(rc->critical)) { if(unlikely(!expression_evaluate(rc->critical))) { // calculation failed debug(D_HEALTH, "Health alarm '%s.%s': critical expression failed with error: %s", rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->critical->error_msg)); if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_CRIT_ERROR))) { rc->rrdcalc_flags |= RRDCALC_FLAG_CRIT_ERROR; error("Health alarm '%s.%s': critical expression failed with error: %s", rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->critical->error_msg)); } } else { if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_CRIT_ERROR)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_CRIT_ERROR; debug(D_HEALTH, "Health alarm '%s.%s': critical expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)", rc->chart?rc->chart:"NOCHART", rc->name, rc->critical->result, buffer_tostring(rc->critical->error_msg), rc->source ); critical_status = rrdcalc_value2status(rc->critical->result); } } int status = RRDCALC_STATUS_UNDEFINED; switch(warning_status) { case RRDCALC_STATUS_CLEAR: status = RRDCALC_STATUS_CLEAR; break; case RRDCALC_STATUS_RAISED: status = RRDCALC_STATUS_WARNING; break; default: break; } switch(critical_status) { case RRDCALC_STATUS_CLEAR: if(status == RRDCALC_STATUS_UNDEFINED) status = RRDCALC_STATUS_CLEAR; break; case RRDCALC_STATUS_RAISED: status = RRDCALC_STATUS_CRITICAL; break; default: break; } if(status != rc->status) { health_alarm_log(&localhost, time(NULL), rc->name, rc->rrdset->id, rc->rrdset->family, rc->exec, now - rc->last_status_change, rc->old_value, rc->value, rc->status, status, rc->source, rc->units, rc->info); rc->last_status_change = now; rc->status = status; } rc->last_updated = now; rc->next_update = now + rc->update_every; if (next_run > rc->next_update) next_run = rc->next_update; } rrdhost_unlock(&localhost); } if (unlikely(pthread_setcancelstate(oldstate, NULL) != 0)) error("Cannot set pthread cancel state to RESTORE (%d).", oldstate); // execute notifications // and cleanup health_alarm_log_process(&localhost); now = time(NULL); if(now < next_run) { debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration in %d secs", loop, (int) (next_run - now)); sleep_usec(1000000 * (unsigned long long) (next_run - now)); } else { debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop); } } buffer_free(wb); info("HEALTH thread exiting"); pthread_exit(NULL); return NULL; }