#include "common.h" #define RRDVAR_MAX_LENGTH 1024 struct health_options { const char *health_default_exec; const char *health_default_recipient; const char *log_filename; size_t log_entries_written; FILE *log_fp; }; static struct health_options health = { .health_default_exec = PLUGINS_DIR "/alarm-notify.sh", .health_default_recipient = "root", .log_filename = VARLIB_DIR "/health/alarm_log.db", .log_entries_written = 0, .log_fp = NULL }; int health_enabled = 1; // ---------------------------------------------------------------------------- // health alarm log load/save // no need for locking - only one thread is reading / writing the alarms log static inline int health_alarm_log_open(void) { if(health.log_fp) fclose(health.log_fp); health.log_fp = fopen(health.log_filename, "a"); if(health.log_fp) { if (setvbuf(health.log_fp, NULL, _IOLBF, 0) != 0) error("Health: cannot set line buffering on health log file."); return 0; } error("Health: cannot open health log file '%s'. Health data will be lost in case of netdata or server crash.", health.log_filename); return -1; } static inline void health_alarm_log_close(void) { if(health.log_fp) { fclose(health.log_fp); health.log_fp = NULL; } } static inline void health_log_rotate(void) { static size_t rotate_every = 0; if(unlikely(rotate_every == 0)) { rotate_every = (size_t)config_get_number("health", "rotate log every lines", 2000); if(rotate_every < 100) rotate_every = 100; } if(unlikely(health.log_entries_written > rotate_every)) { health_alarm_log_close(); char old_filename[FILENAME_MAX + 1]; snprintfz(old_filename, FILENAME_MAX, "%s.old", health.log_filename); if(unlink(old_filename) == -1 && errno != ENOENT) error("Health: cannot remove old alarms log file '%s'", old_filename); if(link(health.log_filename, old_filename) == -1 && errno != ENOENT) error("Health: cannot move file '%s' to '%s'.", health.log_filename, old_filename); if(unlink(health.log_filename) == -1 && errno != ENOENT) error("Health: cannot remove old alarms log file '%s'", health.log_filename); // open it with truncate health.log_fp = fopen(health.log_filename, "w"); if(health.log_fp) fclose(health.log_fp); else error("Health: cannot truncate health log '%s'", health.log_filename); health.log_fp = NULL; health.log_entries_written = 0; health_alarm_log_open(); } } static inline void health_alarm_log_save(RRDHOST *host, ALARM_ENTRY *ae) { health_log_rotate(); if(likely(health.log_fp)) { if(unlikely(fprintf(health.log_fp , "%c\t%s" "\t%08x\t%08x\t%08x\t%08x\t%08x" "\t%08x\t%08x\t%08x" "\t%08x\t%08x\t%08x" "\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s" "\t%d\t%d\t%d\t%d" "\t%Lf\t%Lf" "\n" , (ae->flags & HEALTH_ENTRY_FLAG_SAVED)?'U':'A' , host->hostname , ae->unique_id , ae->alarm_id , ae->alarm_event_id , ae->updated_by_id , ae->updates_id , (uint32_t)ae->when , (uint32_t)ae->duration , (uint32_t)ae->non_clear_duration , (uint32_t)ae->flags , (uint32_t)ae->exec_run_timestamp , (uint32_t)ae->delay_up_to_timestamp , (ae->name)?ae->name:"" , (ae->chart)?ae->chart:"" , (ae->family)?ae->family:"" , (ae->exec)?ae->exec:"" , (ae->recipient)?ae->recipient:"" , (ae->source)?ae->source:"" , (ae->units)?ae->units:"" , (ae->info)?ae->info:"" , ae->exec_code , ae->new_status , ae->old_status , ae->delay , (long double)ae->new_value , (long double)ae->old_value ) < 0)) error("Health: failed to save alarm log entry. Health data may be lost in case of abnormal restart."); else { ae->flags |= HEALTH_ENTRY_FLAG_SAVED; health.log_entries_written++; } } } static inline ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char *filename) { static uint32_t max_unique_id = 0, max_alarm_id = 0; errno = 0; char *s, *buf = mallocz(65536 + 1); size_t line = 0, len = 0; ssize_t loaded = 0, updated = 0, errored = 0, duplicate = 0; pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock); while((s = fgets_trim_len(buf, 65536, fp, &len))) { health.log_entries_written++; line++; int max_entries = 30, entries = 0; char *pointers[max_entries]; pointers[entries++] = s++; while(*s) { if(unlikely(*s == '\t')) { *s = '\0'; pointers[entries++] = ++s; if(entries >= max_entries) { error("Health: line %zu of file '%s' has more than %d entries. Ignoring excessive entries.", line, filename, max_entries); break; } } else s++; } if(likely(*pointers[0] == 'U' || *pointers[0] == 'A')) { ALARM_ENTRY *ae = NULL; if(entries < 26) { error("Health: line %zu of file '%s' should have at least 26 entries, but it has %d. Ignoring it.", line, filename, entries); errored++; continue; } // check that we have valid ids uint32_t unique_id = (uint32_t)strtoul(pointers[2], NULL, 16); if(!unique_id) { error("Health: line %zu of file '%s' states alarm entry with invalid unique id %u (%s). Ignoring it.", line, filename, unique_id, pointers[2]); errored++; continue; } uint32_t alarm_id = (uint32_t)strtoul(pointers[3], NULL, 16); if(!alarm_id) { error("Health: line %zu of file '%s' states alarm entry for invalid alarm id %u (%s). Ignoring it.", line, filename, alarm_id, pointers[3]); errored++; continue; } if(unlikely(*pointers[0] == 'A')) { // make sure it is properly numbered if(unlikely(host->health_log.alarms && unique_id < host->health_log.alarms->unique_id)) { error("Health: line %zu of file '%s' has alarm log entry with %u in wrong order. Ignoring it.", line, filename, unique_id); errored++; continue; } ae = callocz(1, sizeof(ALARM_ENTRY)); } else if(unlikely(*pointers[0] == 'U')) { // find the original for(ae = host->health_log.alarms; ae; ae = ae->next) { if(unlikely(unique_id == ae->unique_id)) { if(unlikely(*pointers[0] == 'A')) { error("Health: line %zu of file '%s' adds duplicate alarm log entry with unique id %u. Using the later." , line, filename, unique_id); *pointers[0] = 'U'; duplicate++; } break; } else if(unlikely(unique_id > ae->unique_id)) { // no need to continue // the linked list is sorted ae = NULL; break; } } // if not found, skip this line if(!ae) { // error("Health: line %zu of file '%s' updates alarm log entry with unique id %u, but it is not found.", line, filename, unique_id); continue; } } // check for a possible host missmatch //if(strcmp(pointers[1], host->hostname)) // error("Health: line %zu of file '%s' provides an alarm for host '%s' but this is named '%s'.", line, filename, pointers[1], host->hostname); ae->unique_id = unique_id; ae->alarm_id = alarm_id; ae->alarm_event_id = (uint32_t)strtoul(pointers[4], NULL, 16); ae->updated_by_id = (uint32_t)strtoul(pointers[5], NULL, 16); ae->updates_id = (uint32_t)strtoul(pointers[6], NULL, 16); ae->when = (uint32_t)strtoul(pointers[7], NULL, 16); ae->duration = (uint32_t)strtoul(pointers[8], NULL, 16); ae->non_clear_duration = (uint32_t)strtoul(pointers[9], NULL, 16); ae->flags = (uint32_t)strtoul(pointers[10], NULL, 16); ae->flags |= HEALTH_ENTRY_FLAG_SAVED; ae->exec_run_timestamp = (uint32_t)strtoul(pointers[11], NULL, 16); ae->delay_up_to_timestamp = (uint32_t)strtoul(pointers[12], NULL, 16); if(unlikely(ae->name)) freez(ae->name); ae->name = strdupz(pointers[13]); ae->hash_name = simple_hash(ae->name); if(unlikely(ae->chart)) freez(ae->chart); ae->chart = strdupz(pointers[14]); ae->hash_chart = simple_hash(ae->chart); if(unlikely(ae->family)) freez(ae->family); ae->family = strdupz(pointers[15]); if(unlikely(ae->exec)) freez(ae->exec); ae->exec = strdupz(pointers[16]); if(!*ae->exec) { freez(ae->exec); ae->exec = NULL; } if(unlikely(ae->recipient)) freez(ae->recipient); ae->recipient = strdupz(pointers[17]); if(!*ae->recipient) { freez(ae->recipient); ae->recipient = NULL; } if(unlikely(ae->source)) freez(ae->source); ae->source = strdupz(pointers[18]); if(!*ae->source) { freez(ae->source); ae->source = NULL; } if(unlikely(ae->units)) freez(ae->units); ae->units = strdupz(pointers[19]); if(!*ae->units) { freez(ae->units); ae->units = NULL; } if(unlikely(ae->info)) freez(ae->info); ae->info = strdupz(pointers[20]); if(!*ae->info) { freez(ae->info); ae->info = NULL; } ae->exec_code = str2i(pointers[21]); ae->new_status = str2i(pointers[22]); ae->old_status = str2i(pointers[23]); ae->delay = str2i(pointers[24]); ae->new_value = str2l(pointers[25]); ae->old_value = str2l(pointers[26]); // add it to host if not already there if(unlikely(*pointers[0] == 'A')) { ae->next = host->health_log.alarms; host->health_log.alarms = ae; loaded++; } else updated++; if(unlikely(ae->unique_id > max_unique_id)) max_unique_id = ae->unique_id; if(unlikely(ae->alarm_id >= max_alarm_id)) max_alarm_id = ae->alarm_id; } else { error("Health: line %zu of file '%s' is invalid (unrecognized entry type '%s').", line, filename, pointers[0]); errored++; } } pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); freez(buf); if(!max_unique_id) max_unique_id = (uint32_t)now_realtime_sec(); if(!max_alarm_id) max_alarm_id = (uint32_t)now_realtime_sec(); host->health_log.next_log_id = max_unique_id + 1; host->health_log.next_alarm_id = max_alarm_id + 1; debug(D_HEALTH, "Health: loaded file '%s' with %zd new alarm entries, updated %zd alarms, errors %zd entries, duplicate %zd", filename, loaded, updated, errored, duplicate); return loaded; } static inline void health_alarm_log_load(RRDHOST *host) { health_alarm_log_close(); char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s.old", health.log_filename); FILE *fp = fopen(filename, "r"); if(!fp) error("Health: cannot open health file: %s", filename); else { health_alarm_log_read(host, fp, filename); fclose(fp); } health.log_entries_written = 0; fp = fopen(health.log_filename, "r"); if(!fp) error("Health: cannot open health file: %s", health.log_filename); else { health_alarm_log_read(host, fp, health.log_filename); fclose(fp); } health_alarm_log_open(); } // ---------------------------------------------------------------------------- // health alarm log management static inline void health_alarm_log(RRDHOST *host, uint32_t alarm_id, uint32_t alarm_event_id, time_t when, const char *name, const char *chart, const char *family, const char *exec, const char *recipient, 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, int delay ) { debug(D_HEALTH, "Health adding alarm log entry with id: %u", host->health_log.next_log_id); 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(recipient) ae->recipient = strdupz(recipient); if(source) ae->source = strdupz(source); if(units) ae->units = strdupz(units); if(info) ae->info = strdupz(info); ae->unique_id = host->health_log.next_log_id++; ae->alarm_id = alarm_id; ae->alarm_event_id = alarm_event_id; 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; ae->delay = delay; ae->delay_up_to_timestamp = when + delay; 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->alarm_id == ae->alarm_id) { if(!(t->flags & HEALTH_ENTRY_FLAG_UPDATED) && !t->updated_by_id) { t->flags |= HEALTH_ENTRY_FLAG_UPDATED; t->updated_by_id = ae->unique_id; ae->updates_id = t->unique_id; 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; health_alarm_log_save(host, t); } // no need to continue break; } } pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); health_alarm_log_save(host, ae); } // ---------------------------------------------------------------------------- // 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) { debug(D_VARIABLES, "Deleting variable '%s'", rv->name); if(unlikely(!rrdvar_index_del(tree, rv))) error("Attempted to delete variable '%s' from host '%s', but it is not found.", rv->name, host->hostname); } freez(rv->name); freez(rv); } static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, int type, void *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 { debug(D_VARIABLES, "Variable '%s' is already found in scope '%s'.", variable, scope); // already exists freez(variable); // this is important // it must return NULL - not the existing variable - or double-free will happen rv = NULL; } return rv; } // ---------------------------------------------------------------------------- // CUSTOM VARIABLES RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name) { calculated_number *v = callocz(1, sizeof(calculated_number)); *v = NAN; RRDVAR *rv = rrdvar_create_and_index("host", &host->variables_root_index, name, RRDVAR_TYPE_CALCULATED_ALLOCATED, v); if(unlikely(!rv)) { free(v); error("Requested variable '%s' already exists - possibly 2 plugins will be updating it at the same time", name); char *variable = strdupz(name); rrdvar_fix_name(variable); uint32_t hash = simple_hash(variable); rv = rrdvar_index_find(&host->variables_root_index, variable, hash); } return rv; } void rrdvar_custom_host_variable_destroy(RRDHOST *host, const char *name) { char *variable = strdupz(name); rrdvar_fix_name(variable); uint32_t hash = simple_hash(variable); RRDVAR *rv = rrdvar_index_find(&host->variables_root_index, variable, hash); freez(variable); if(!rv) { error("Attempted to remove variable '%s' from host '%s', but it does not exist.", name, host->hostname); return; } if(rv->type != RRDVAR_TYPE_CALCULATED_ALLOCATED) { error("Attempted to remove variable '%s' from host '%s', but it does not a custom allocated variable.", name, host->hostname); return; } if(!rrdvar_index_del(&host->variables_root_index, rv)) { error("Attempted to remove variable '%s' from host '%s', but it cannot be found.", name, host->hostname); return; } freez(rv->name); freez(rv->value); freez(rv); } void rrdvar_custom_host_variable_set(RRDVAR *rv, calculated_number value) { if(rv->type != RRDVAR_TYPE_CALCULATED_ALLOCATED) error("requested to set variable '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom one.", rv->name, value); else { calculated_number *v = rv->value; *v = value; } } // ---------------------------------------------------------------------------- // RRDVAR lookup static calculated_number rrdvar2number(RRDVAR *rv) { switch(rv->type) { case RRDVAR_TYPE_CALCULATED_ALLOCATED: 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; } } 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; } return 0; } // ---------------------------------------------------------------------------- // RRDVAR to JSON struct variable2json_helper { BUFFER *buf; size_t counter; }; static int single_variable2json(void *entry, void *data) { struct variable2json_helper *helper = (struct variable2json_helper *)data; RRDVAR *rv = (RRDVAR *)entry; calculated_number value = rrdvar2number(rv); if(unlikely(isnan(value) || isinf(value))) buffer_sprintf(helper->buf, "%s\n\t\t\"%s\": null", helper->counter?",":"", rv->name); else buffer_sprintf(helper->buf, "%s\n\t\t\"%s\": %0.5Lf", helper->counter?",":"", rv->name, (long double)value); helper->counter++; return 0; } void health_api_v1_chart_variables2json(RRDSET *st, BUFFER *buf) { struct variable2json_helper helper = { .buf = buf, .counter = 0 }; buffer_sprintf(buf, "{\n\t\"chart\": \"%s\",\n\t\"chart_name\": \"%s\",\n\t\"chart_context\": \"%s\",\n\t\"chart_variables\": {", st->id, st->name, st->context); avl_traverse_lock(&st->variables_root_index, single_variable2json, (void *)&helper); buffer_sprintf(buf, "\n\t},\n\t\"family\": \"%s\",\n\t\"family_variables\": {", st->family); helper.counter = 0; avl_traverse_lock(&st->rrdfamily->variables_root_index, single_variable2json, (void *)&helper); buffer_sprintf(buf, "\n\t},\n\t\"host\": \"%s\",\n\t\"host_variables\": {", st->rrdhost->hostname); helper.counter = 0; avl_traverse_lock(&st->rrdhost->variables_root_index, single_variable2json, (void *)&helper); buffer_strcat(buf, "\n\t}\n}\n"); } // ---------------------------------------------------------------------------- // RRDDIMVAR management // DIMENSION VARIABLES #define RRDDIMVAR_ID_MAX 1024 static inline void rrddimvar_free_variables(RRDDIMVAR *rs) { RRDDIM *rd = rs->rrddim; RRDSET *st = rd->rrdset; // CHART VARIABLES FOR THIS DIMENSION rrdvar_free(st->rrdhost, &st->variables_root_index, rs->var_local_id); rs->var_local_id = NULL; rrdvar_free(st->rrdhost, &st->variables_root_index, rs->var_local_name); rs->var_local_name = NULL; // FAMILY VARIABLES FOR THIS DIMENSION rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_id); rs->var_family_id = NULL; rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_name); rs->var_family_name = NULL; rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_contextid); rs->var_family_contextid = NULL; rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_contextname); rs->var_family_contextname = NULL; // HOST VARIABLES FOR THIS DIMENSION rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartidid); rs->var_host_chartidid = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartidname); rs->var_host_chartidname = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartnameid); rs->var_host_chartnameid = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_chartnamename); rs->var_host_chartnamename = NULL; // KEYS freez(rs->key_id); rs->key_id = NULL; freez(rs->key_name); rs->key_name = NULL; freez(rs->key_fullidid); rs->key_fullidid = NULL; freez(rs->key_fullidname); rs->key_fullidname = NULL; freez(rs->key_contextid); rs->key_contextid = NULL; freez(rs->key_contextname); rs->key_contextname = NULL; freez(rs->key_fullnameid); rs->key_fullnameid = NULL; freez(rs->key_fullnamename); rs->key_fullnamename = NULL; } static inline void rrddimvar_create_variables(RRDDIMVAR *rs) { rrddimvar_free_variables(rs); RRDDIM *rd = rs->rrddim; RRDSET *st = rd->rrdset; char buffer[RRDDIMVAR_ID_MAX + 1]; // KEYS snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->id, rs->suffix); rs->key_id = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix); rs->key_name = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->key_id); rs->key_fullidid = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->key_name); rs->key_fullidname = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->context, rs->key_id); rs->key_contextid = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->context, rs->key_name); rs->key_contextname = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->key_id); rs->key_fullnameid = strdupz(buffer); snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->key_name); rs->key_fullnamename = strdupz(buffer); // CHART VARIABLES FOR THIS DIMENSION // ----------------------------------- // // dimensions are available as: // - $id // - $name rs->var_local_id = rrdvar_create_and_index("local", &st->variables_root_index, rs->key_id, rs->type, rs->value); rs->var_local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->key_name, rs->type, rs->value); // FAMILY VARIABLES FOR THIS DIMENSION // ----------------------------------- // // dimensions are available as: // - $id (only the first, when multiple overlap) // - $name (only the first, when multiple overlap) // - $chart-context.id // - $chart-context.name rs->var_family_id = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_id, rs->type, rs->value); rs->var_family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_name, rs->type, rs->value); rs->var_family_contextid = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_contextid, rs->type, rs->value); rs->var_family_contextname = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_contextname, rs->type, rs->value); // HOST VARIABLES FOR THIS DIMENSION // ----------------------------------- // // dimensions are available as: // - $chart-id.id // - $chart-id.name // - $chart-name.id // - $chart-name.name rs->var_host_chartidid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullidid, rs->type, rs->value); rs->var_host_chartidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullidname, rs->type, rs->value); rs->var_host_chartnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullnameid, rs->type, rs->value); rs->var_host_chartnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullnamename, rs->type, rs->value); } 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 = ""; RRDDIMVAR *rs = (RRDDIMVAR *)callocz(1, sizeof(RRDDIMVAR)); rs->prefix = strdupz(prefix); rs->suffix = strdupz(suffix); rs->type = type; rs->value = value; rs->options = options; rs->rrddim = rd; rs->next = rd->variables; rd->variables = rs; rrddimvar_create_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; rrddimvar_create_variables(rs); } } 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); rrddimvar_free_variables(rs); 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->key_name, st->id, rd->id); else t->next = rs->next; } freez(rs->prefix); freez(rs->suffix); freez(rs); } // ---------------------------------------------------------------------------- // RRDSETVAR management // CHART VARIABLES static inline void rrdsetvar_free_variables(RRDSETVAR *rs) { RRDSET *st = rs->rrdset; // CHART rrdvar_free(st->rrdhost, &st->variables_root_index, rs->var_local); rs->var_local = NULL; // FAMILY rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family); rs->var_family = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host); rs->var_host = NULL; // HOST rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->var_family_name); rs->var_family_name = NULL; rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->var_host_name); rs->var_host_name = NULL; // KEYS freez(rs->key_fullid); rs->key_fullid = NULL; freez(rs->key_fullname); rs->key_fullname = NULL; } static inline void rrdsetvar_create_variables(RRDSETVAR *rs) { rrdsetvar_free_variables(rs); RRDSET *st = rs->rrdset; // KEYS char buffer[RRDVAR_MAX_LENGTH + 1]; snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, rs->variable); rs->key_fullid = strdupz(buffer); snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable); rs->key_fullname = strdupz(buffer); // CHART rs->var_local = rrdvar_create_and_index("local", &st->variables_root_index, rs->variable, rs->type, rs->value); // FAMILY rs->var_family = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_fullid, rs->type, rs->value); rs->var_family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->key_fullname, rs->type, rs->value); // HOST rs->var_host = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullid, rs->type, rs->value); rs->var_host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->key_fullname, rs->type, rs->value); } 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)); rs->variable = strdupz(variable); rs->type = type; rs->value = value; rs->options = options; rs->rrdset = st; rs->next = st->variables; st->variables = rs; rrdsetvar_create_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); RRDSETVAR *rs, *next = st->variables; while((rs = next)) { next = rs->next; rrdsetvar_create_variables(rs); } 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); 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->key_fullname, st->id); else t->next = rs->next; } rrdsetvar_free_variables(rs); freez(rs->variable); freez(rs); } // ---------------------------------------------------------------------------- // RRDCALC management inline const char *rrdcalc_status2string(int status) { switch(status) { case RRDCALC_STATUS_REMOVED: return "REMOVED"; case RRDCALC_STATUS_UNDEFINED: return "UNDEFINED"; case RRDCALC_STATUS_UNINITIALIZED: return "UNINITIALIZED"; 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: error("Unknown alarm status %d", status); 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 = now_realtime_sec(); rc->rrdset = st; rc->rrdset_next = st->alarms; rc->rrdset_prev = NULL; if(rc->rrdset_next) rc->rrdset_next->rrdset_prev = rc; 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); { time_t now = now_realtime_sec(); 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); } } 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(unlikely(rc->rrdset)) continue; if(unlikely(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) { debug(D_HEALTH, "Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rc->chart?rc->chart:"NOCHART", rc->name); error("Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rc->chart?rc->chart:"NOCHART", rc->name); return; } { time_t now = now_realtime_sec(); 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); } 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(unlikely(rc->hash == hash && !strcmp(rc->name, name))) return rc; } return NULL; } static inline int rrdcalc_exists(RRDHOST *host, const char *chart, const char *name, uint32_t hash_chart, uint32_t hash_name) { RRDCALC *rc; if(unlikely(!chart)) { error("attempt to find RRDCALC '%s' without giving a chart name", name); return 1; } if(unlikely(!hash_chart)) hash_chart = simple_hash(chart); if(unlikely(!hash_name)) hash_name = simple_hash(name); // make sure it does not already exist for(rc = host->alarms; rc ; rc = rc->next) { if (unlikely(rc->chart && rc->hash == hash_name && rc->hash_chart == hash_chart && !strcmp(name, rc->name) && !strcmp(chart, rc->chart))) { debug(D_HEALTH, "Health alarm '%s.%s' already exists in host '%s'.", chart, name, host->hostname); error("Health alarm '%s.%s' already exists in host '%s'.", chart, name, host->hostname); return 1; } } return 0; } static inline uint32_t rrdcalc_get_unique_id(RRDHOST *host, const char *chart, const char *name, uint32_t *next_event_id) { if(chart && name) { uint32_t hash_chart = simple_hash(chart); uint32_t hash_name = simple_hash(name); // re-use old IDs, by looking them up in the alarm log ALARM_ENTRY *ae; for(ae = host->health_log.alarms; ae ;ae = ae->next) { if(unlikely(ae->hash_name == hash_name && ae->hash_chart == hash_chart && !strcmp(name, ae->name) && !strcmp(chart, ae->chart))) { if(next_event_id) *next_event_id = ae->alarm_event_id + 1; return ae->alarm_id; } } } return host->health_log.next_alarm_id++; } static inline void rrdcalc_create_part2(RRDHOST *host, RRDCALC *rc) { rrdhost_check_rdlock(host); if(rc->calculation) { rc->calculation->status = &rc->status; 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->status = &rc->status; 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->status = &rc->status; 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 if(likely(host->alarms)) { // append it RRDCALC *t; for(t = host->alarms; t && t->next ; t = t->next) ; t->next = rc; } else { 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 RRDCALC *rrdcalc_create(RRDHOST *host, RRDCALCTEMPLATE *rt, const char *chart) { debug(D_HEALTH, "Health creating dynamic alarm (from template) '%s.%s'", chart, rt->name); if(rrdcalc_exists(host, chart, rt->name, 0, 0)) return NULL; RRDCALC *rc = callocz(1, sizeof(RRDCALC)); rc->next_event_id = 1; rc->id = rrdcalc_get_unique_id(host, chart, rt->name, &rc->next_event_id); rc->name = strdupz(rt->name); rc->hash = simple_hash(rc->name); rc->chart = strdupz(chart); rc->hash_chart = simple_hash(rc->chart); if(rt->dimensions) rc->dimensions = strdupz(rt->dimensions); rc->green = rt->green; rc->red = rt->red; rc->value = NAN; rc->old_value = NAN; rc->delay_up_duration = rt->delay_up_duration; rc->delay_down_duration = rt->delay_down_duration; rc->delay_max_duration = rt->delay_max_duration; rc->delay_multiplier = rt->delay_multiplier; rc->group = rt->group; rc->after = rt->after; rc->before = rt->before; rc->update_every = rt->update_every; rc->options = rt->options; if(rt->exec) rc->exec = strdupz(rt->exec); if(rt->recipient) rc->recipient = strdupz(rt->recipient); if(rt->source) rc->source = strdupz(rt->source); if(rt->units) rc->units = strdupz(rt->units); if(rt->info) rc->info = strdupz(rt->info); if(rt->calculation) { rc->calculation = expression_parse(rt->calculation->source, NULL, NULL); if(!rc->calculation) error("Health alarm '%s.%s': failed to parse calculation expression '%s'", chart, rt->name, rt->calculation->source); } if(rt->warning) { rc->warning = expression_parse(rt->warning->source, NULL, NULL); if(!rc->warning) error("Health alarm '%s.%s': failed to re-parse warning expression '%s'", chart, rt->name, rt->warning->source); } if(rt->critical) { rc->critical = expression_parse(rt->critical->source, NULL, NULL); if(!rc->critical) error("Health alarm '%s.%s': failed to re-parse critical expression '%s'", chart, rt->name, rt->critical->source); } 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", (rc->chart)?rc->chart:"NOCHART", rc->name, (rc->exec)?rc->exec:"DEFAULT", (rc->recipient)?rc->recipient:"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, rc->delay_up_duration, rc->delay_down_duration, rc->delay_max_duration, rc->delay_multiplier ); 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(unlikely(rc == host->alarms)) host->alarms = rc->next; else if(likely(host->alarms)) { RRDCALC *t, *last = host->alarms; for(t = last->next; t && t != rc; last = t, t = t->next) ; if(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->recipient); 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) && (!rt->family_pattern || simple_pattern_matches(rt->family_pattern, st->family))) { RRDCALC *rc = rrdcalc_create(st->rrdhost, rt, st->id); if(unlikely(!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); #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->family_match); simple_pattern_free(rt->family_pattern); freez(rt->name); freez(rt->exec); freez(rt->recipient); 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_FAMILIES_KEY "families" #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_RECIPIENT_KEY "to" #define HEALTH_UNITS_KEY "units" #define HEALTH_INFO_KEY "info" #define HEALTH_DELAY_KEY "delay" static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) { 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; } if (rrdcalc_exists(host, rc->chart, rc->name, rc->hash_chart, rc->hash)) return 0; rc->id = rrdcalc_get_unique_id(&localhost, rc->chart, rc->name, &rc->next_event_id); 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", rc->chart?rc->chart:"NOCHART", rc->name, rc->id, (rc->exec)?rc->exec:"DEFAULT", (rc->recipient)?rc->recipient:"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, rc->delay_up_duration, rc->delay_down_duration, rc->delay_max_duration, rc->delay_multiplier ); rrdcalc_create_part2(host, rc); return 1; } static inline int rrdcalctemplate_add_template_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) { if(unlikely(!rt->context)) { error("Health configuration for template '%s' does not have a context", rt->name); return 0; } if(unlikely(!rt->update_every)) { error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rt->name); return 0; } if(unlikely(!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, *last = NULL; for (t = host->templates; t ; last = t, t = t->next) { if(unlikely(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', 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", rt->name, (rt->context)?rt->context:"NONE", (rt->exec)?rt->exec:"DEFAULT", (rt->recipient)?rt->recipient:"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->delay_up_duration, rt->delay_down_duration, rt->delay_max_duration, rt->delay_multiplier ); if(likely(last)) { last->next = rt; } else { 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_delay( size_t line, const char *path, const char *file, char *string, int *delay_up_duration, int *delay_down_duration, int *delay_max_duration, float *delay_multiplier) { char given_up = 0; char given_down = 0; char given_max = 0; char given_multiplier = 0; char *s = string; while(*s) { char *key = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if(!*key) break; char *value = s; while(*s && !isspace(*s)) s++; while(*s && isspace(*s)) *s++ = '\0'; if(!strcasecmp(key, "up")) { if (!health_parse_duration(value, delay_up_duration)) { error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword", line, path, file, value, key); } else given_up = 1; } else if(!strcasecmp(key, "down")) { if (!health_parse_duration(value, delay_down_duration)) { error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword", line, path, file, value, key); } else given_down = 1; } else if(!strcasecmp(key, "multiplier")) { *delay_multiplier = strtof(value, NULL); if(isnan(*delay_multiplier) || isinf(*delay_multiplier) || islessequal(*delay_multiplier, 0)) { error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword", line, path, file, value, key); } else given_multiplier = 1; } else if(!strcasecmp(key, "max")) { if (!health_parse_duration(value, delay_max_duration)) { error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword", line, path, file, value, key); } else given_max = 1; } else { error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'", line, path, file, key); } } if(!given_up) *delay_up_duration = 0; if(!given_down) *delay_down_duration = 0; if(!given_multiplier) *delay_multiplier = 1.0; if(!given_max) { if((*delay_max_duration) < (*delay_up_duration) * (*delay_multiplier)) *delay_max_duration = (*delay_up_duration) * (*delay_multiplier); if((*delay_max_duration) < (*delay_down_duration) * (*delay_multiplier)) *delay_max_duration = (*delay_down_duration) * (*delay_multiplier); } 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 *tabs2spaces(char *s) { char *t = s; while(*t) { if(unlikely(*t == '\t')) *t = ' '; t++; } return s; } 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_families = 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; 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_families = simple_uhash(HEALTH_FAMILIES_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); hash_recipient = simple_hash(HEALTH_RECIPIENT_KEY); hash_delay = simple_uhash(HEALTH_DELAY_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++; s = trim(buffer); if(!s) continue; 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; } 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->next_event_id = 1; rc->name = tabs2spaces(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; rc->delay_multiplier = 1.0; 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 = tabs2spaces(strdupz(value)); rt->hash_name = simple_hash(rt->name); rt->source = health_source_file(line, path, filename); rt->green = NAN; rt->red = NAN; rt->delay_multiplier = 1.0; 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)) error("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 = tabs2spaces(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)) error("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) { error("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) { error("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)) error("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 = tabs2spaces(strdupz(value)); } else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) { if(rc->recipient) { if(strcmp(rc->recipient, value)) error("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->recipient, value, value); freez(rc->recipient); } rc->recipient = tabs2spaces(strdupz(value)); } else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) { if(rc->units) { if(strcmp(rc->units, value)) error("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 = tabs2spaces(strdupz(value)); strip_quotes(rc->units); } else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) { if(rc->info) { if(strcmp(rc->info, value)) error("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 = tabs2spaces(strdupz(value)); strip_quotes(rc->info); } else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) { health_parse_delay(line, path, filename, value, &rc->delay_up_duration, &rc->delay_down_duration, &rc->delay_max_duration, &rc->delay_multiplier); } 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)) error("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 = tabs2spaces(strdupz(value)); rt->hash_context = simple_hash(rt->context); } else if(hash == hash_families && !strcasecmp(key, HEALTH_FAMILIES_KEY)) { freez(rt->family_match); simple_pattern_free(rt->family_pattern); rt->family_match = tabs2spaces(strdupz(value)); rt->family_pattern = simple_pattern_create(rt->family_match, SIMPLE_PATTERN_EXACT); } 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)) error("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) { error("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) { error("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)) error("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 = tabs2spaces(strdupz(value)); } else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) { if(rt->recipient) { if(strcmp(rt->recipient, value)) error("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->recipient, value, value); freez(rt->recipient); } rt->recipient = tabs2spaces(strdupz(value)); } else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) { if(rt->units) { if(strcmp(rt->units, value)) error("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 = tabs2spaces(strdupz(value)); strip_quotes(rt->units); } else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) { if(rt->info) { if(strcmp(rt->info, value)) error("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 = tabs2spaces(strdupz(value)); strip_quotes(rt->info); } else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) { health_parse_delay(line, path, filename, value, &rt->delay_up_duration, &rt->delay_down_duration, &rt->delay_max_duration, &rt->delay_multiplier); } 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') )) { debug(D_HEALTH, "Ignoring directory '%s'", de->d_name); 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 || de->d_type == DT_UNKNOWN) && len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) { health_readfile(path, de->d_name); } else debug(D_HEALTH, "Ignoring file '%s'", 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 *pathname = config_get("health", "health db directory", VARLIB_DIR "/health"); if(mkdir(pathname, 0770) == -1 && errno != EEXIST) fatal("Cannot create directory '%s'.", pathname); char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s/health-log.db", pathname); health.log_filename = config_get("health", "health db file", filename); health_alarm_log_load(&localhost); health_alarm_log_open(); char *path = health_config_dir(); { char buffer[FILENAME_MAX + 1]; snprintfz(buffer, FILENAME_MAX, "%s/alarm-notify.sh", config_get("global", "plugins directory", PLUGINS_DIR)); health.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 < 10) { 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, RRDHOST *host) { buffer_sprintf(wb, "\n\t{\n" "\t\t\"hostname\": \"%s\",\n" "\t\t\"unique_id\": %u,\n" "\t\t\"alarm_id\": %u,\n" "\t\t\"alarm_event_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\": %lu,\n" "\t\t\"exec_failed\": %s,\n" "\t\t\"exec\": \"%s\",\n" "\t\t\"recipient\": \"%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" "\t\t\"delay\": %d,\n" "\t\t\"delay_up_to_timestamp\": %lu,\n" "\t\t\"updated_by_id\": %u,\n" "\t\t\"updates_id\": %u,\n", host->hostname, ae->unique_id, ae->alarm_id, ae->alarm_event_id, ae->name, ae->chart, ae->family, (ae->flags & HEALTH_ENTRY_FLAG_PROCESSED)?"true":"false", (ae->flags & HEALTH_ENTRY_FLAG_UPDATED)?"true":"false", (unsigned long)ae->exec_run_timestamp, (ae->flags & HEALTH_ENTRY_FLAG_EXEC_FAILED)?"true":"false", ae->exec?ae->exec:health.health_default_exec, ae->recipient?ae->recipient:health.health_default_recipient, 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), ae->delay, (unsigned long)ae->delay_up_to_timestamp, ae->updated_by_id, ae->updates_id ); 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, uint32_t after) { 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(ae->unique_id > after) { if(likely(count)) buffer_strcat(wb, ","); health_alarm_entry2json_nolock(wb, ae, host); } } 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\"id\": %lu,\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\"recipient\": \"%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" "\t\t\t\"delay_up_duration\": %d,\n" "\t\t\t\"delay_down_duration\": %d,\n" "\t\t\t\"delay_max_duration\": %d,\n" "\t\t\t\"delay_multiplier\": %f,\n" "\t\t\t\"delay\": %d,\n" "\t\t\t\"delay_up_to_timestamp\": %lu,\n" , rc->chart, rc->name , (unsigned long)rc->id , rc->name , rc->chart , (rc->rrdset && rc->rrdset->family)?rc->rrdset->family:"" , (rc->rrdset)?"true":"false" , rc->exec?rc->exec:health.health_default_exec , rc->recipient?rc->recipient:health.health_default_recipient , 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 , rc->delay_up_duration , rc->delay_down_duration , rc->delay_max_duration , rc->delay_multiplier , rc->delay_last , (unsigned long)rc->delay_up_to_timestamp ); 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_sprintf(wb, "{\n\t\"hostname\": \"%s\"," "\n\t\"latest_alarm_log_unique_id\": %u," "\n\t\"status\": %s," "\n\t\"now\": %lu," "\n\t\"alarms\": {\n", host->hostname, (host->health_log.next_log_id > 0)?(host->health_log.next_log_id - 1):0, health_enabled?"true":"false", (unsigned long)now_realtime_sec()); RRDCALC *rc; for(i = 0, rc = host->alarms; rc ; rc = rc->next) { if(unlikely(!rc->rrdset || !rc->rrdset->last_collected_time.tv_sec)) continue; if(likely(!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_strcat(wb, "\n\t}\n}\n"); 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(); // free all running alarms rrdhost_rwlock(&localhost); health_free_all_nolock(&localhost); rrdhost_unlock(&localhost); // invalidate all previous entries in the alarm log ALARM_ENTRY *t; for(t = localhost.health_log.alarms ; t ; t = t->next) { if(t->new_status != RRDCALC_STATUS_REMOVED) t->flags |= HEALTH_ENTRY_FLAG_UPDATED; } // reset all thresholds to all charts RRDSET *st; for(st = localhost.rrdset_root; st ; st = st->next) { st->green = NAN; st->red = NAN; } // load the new alarms rrdhost_rwlock(&localhost); health_readdir(path); rrdhost_unlock(&localhost); // link the loaded alarms to their charts 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_value2status(calculated_number n) { if(isnan(n) || isinf(n)) return RRDCALC_STATUS_UNDEFINED; if(n) return RRDCALC_STATUS_RAISED; return RRDCALC_STATUS_CLEAR; } #define ALARM_EXEC_COMMAND_LENGTH 8192 static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) { ae->flags |= HEALTH_ENTRY_FLAG_PROCESSED; if(unlikely(ae->new_status < RRDCALC_STATUS_CLEAR)) { // do not send notifications for internal statuses goto done; } // find the previous notification for the same alarm // which we have run the exec script { uint32_t id = ae->alarm_id; ALARM_ENTRY *t; for(t = ae->next; t ; t = t->next) { if(t->alarm_id == id && t->flags & HEALTH_ENTRY_FLAG_EXEC_RUN) break; } if(likely(t)) { // we have executed this alarm notification in the past if(t && t->new_status == ae->new_status) { // don't send the notification for the same status again debug(D_HEALTH, "Health not sending again notification for alarm '%s.%s' status %s", ae->chart, ae->name , rrdcalc_status2string(ae->new_status)); goto done; } } else { // we have not executed this alarm notification in the past // so, don't send CLEAR notifications if(unlikely(ae->new_status == RRDCALC_STATUS_CLEAR)) { debug(D_HEALTH, "Health not sending notification for first initialization of alarm '%s.%s' status %s" , ae->chart, ae->name, rrdcalc_status2string(ae->new_status)); goto done; } } } static char command_to_run[ALARM_EXEC_COMMAND_LENGTH + 1]; pid_t command_pid; const char *exec = ae->exec; if(!exec) exec = health.health_default_exec; const char *recipient = ae->recipient; if(!recipient) recipient = health.health_default_recipient; snprintfz(command_to_run, ALARM_EXEC_COMMAND_LENGTH, "exec %s '%s' '%s' '%u' '%u' '%u' '%lu' '%s' '%s' '%s' '%s' '%s' '%0.0Lf' '%0.0Lf' '%s' '%u' '%u' '%s' '%s'", exec, recipient, host->hostname, ae->unique_id, ae->alarm_id, ae->alarm_event_id, (unsigned long)ae->when, 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->flags |= HEALTH_ENTRY_FLAG_EXEC_RUN; ae->exec_run_timestamp = now_realtime_sec(); debug(D_HEALTH, "executing command '%s'", command_to_run); FILE *fp = mypopen(command_to_run, &command_pid); if(!fp) { error("HEALTH: Cannot popen(\"%s\", \"r\").", command_to_run); goto done; } debug(D_HEALTH, "HEALTH reading from command"); char *s = fgets(command_to_run, FILENAME_MAX, fp); (void)s; 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->flags |= HEALTH_ENTRY_FLAG_EXEC_FAILED; done: health_alarm_log_save(host, ae); return; } static inline void health_process_notifications(RRDHOST *host, ALARM_ENTRY *ae) { debug(D_HEALTH, "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(host, ae); } static inline void health_alarm_log_process(RRDHOST *host) { static uint32_t stop_at_id = 0; uint32_t first_waiting = (host->health_log.alarms)?host->health_log.alarms->unique_id:0; time_t now = now_realtime_sec(); pthread_rwlock_rdlock(&host->health_log.alarm_log_rwlock); ALARM_ENTRY *ae; for(ae = host->health_log.alarms; ae && ae->unique_id >= stop_at_id ; ae = ae->next) { if(unlikely( !(ae->flags & HEALTH_ENTRY_FLAG_PROCESSED) && !(ae->flags & HEALTH_ENTRY_FLAG_UPDATED) )) { if(unlikely(ae->unique_id < first_waiting)) first_waiting = ae->unique_id; if(likely(now >= ae->delay_up_to_timestamp)) health_process_notifications(host, ae); } } // remember this for the next iteration stop_at_id = first_waiting; 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 * 2 / 3; 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) { debug(D_HEALTH, "Health removing alarm log entry with id: %u", ae->unique_id); ALARM_ENTRY *t = ae->next; freez(ae->name); freez(ae->chart); freez(ae->family); freez(ae->exec); freez(ae->recipient); freez(ae->source); freez(ae->units); freez(ae->info); freez(ae); ae = t; host->health_log.count--; } pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock); } 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->next_update > now)) { if (unlikely(*next_run > rc->next_update)) { // update the next_run time of the main loop // to run this alarm precisely the time required *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; } 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->rrdset->last_collected_time.tv_sec || rc->rrdset->counter_done < 2)) { debug(D_HEALTH, "Health not running alarm '%s.%s'. Chart is not fully collected yet.", rc->chart?rc->chart:"NOCHART", rc->name); return 0; } int update_every = rc->rrdset->update_every; time_t first = rrdset_first_entry_t(rc->rrdset); time_t last = rrdset_last_entry_t(rc->rrdset); if(unlikely(now + update_every < first /* || now - update_every > last */)) { debug(D_HEALTH , "Health not examining alarm '%s.%s' yet (wanted time is out of bounds - we need %lu but got %lu - %lu)." , rc->chart ? rc->chart : "NOCHART", rc->name, (unsigned long) now, (unsigned long) first , (unsigned long) last); return 0; } if(RRDCALC_HAS_DB_LOOKUP(rc)) { time_t needed = now + rc->before + rc->after; if(needed + update_every < first || needed - update_every > last) { debug(D_HEALTH , "Health not examining alarm '%s.%s' yet (not enough data yet - we need %lu but got %lu - %lu)." , rc->chart ? rc->chart : "NOCHART", rc->name, (unsigned long) needed, (unsigned long) first , (unsigned long) last); return 0; } } return 1; } void *health_main(void *ptr) { struct netdata_static_thread *static_thread = (struct netdata_static_thread *)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 && !netdata_exit) { loop++; debug(D_HEALTH, "Health monitoring iteration no %u started", loop); int oldstate, runnable = 0; time_t now = now_realtime_sec(); 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))) { if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_RUNNABLE)) rc->rrdcalc_flags &= ~RRDCALC_FLAG_RUNNABLE; continue; } runnable++; rc->old_value = rc->value; rc->rrdcalc_flags |= RRDCALC_FLAG_RUNNABLE; // 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; /* - RRDCALC_FLAG_DB_STALE not currently used 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': expression '%s' failed: %s", rc->chart?rc->chart:"NOCHART", rc->name, rc->calculation->parsed_as, 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': expression '%s' failed: %s", rc->chart?rc->chart:"NOCHART", rc->name, rc->calculation->parsed_as, 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': expression '%s' gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)", rc->chart?rc->chart:"NOCHART", rc->name, rc->calculation->parsed_as, rc->calculation->result, buffer_tostring(rc->calculation->error_msg), rc->source ); rc->value = rc->calculation->result; } } } rrdhost_unlock(&localhost); if(unlikely(runnable && !netdata_exit)) { rrdhost_rdlock(&localhost); for(rc = localhost.alarms; rc; rc = rc->next) { if(unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_RUNNABLE))) continue; int warning_status = RRDCALC_STATUS_UNDEFINED; int critical_status = RRDCALC_STATUS_UNDEFINED; if(likely(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(likely(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) { int delay = 0; if(now > rc->delay_up_to_timestamp) { rc->delay_up_current = rc->delay_up_duration; rc->delay_down_current = rc->delay_down_duration; rc->delay_last = 0; rc->delay_up_to_timestamp = 0; } else { rc->delay_up_current = (int)(rc->delay_up_current * rc->delay_multiplier); if(rc->delay_up_current > rc->delay_max_duration) rc->delay_up_current = rc->delay_max_duration; rc->delay_down_current = (int)(rc->delay_down_current * rc->delay_multiplier); if(rc->delay_down_current > rc->delay_max_duration) rc->delay_down_current = rc->delay_max_duration; } if(status > rc->status) delay = rc->delay_up_current; else delay = rc->delay_down_current; // COMMENTED: because we do need to send raising alarms // if(now + delay < rc->delay_up_to_timestamp) // delay = (int)(rc->delay_up_to_timestamp - now); rc->delay_last = delay; rc->delay_up_to_timestamp = now + delay; 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); 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); if(unlikely(netdata_exit)) break; // execute notifications // and cleanup health_alarm_log_process(&localhost); if(unlikely(netdata_exit)) break; now = now_realtime_sec(); 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(USEC_PER_SEC * (usec_t) (next_run - now)); } else { debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop); } } buffer_free(wb); info("HEALTH thread exiting"); static_thread->enabled = 0; pthread_exit(NULL); return NULL; }