#define NETDATA_HEALTH_INTERNALS
#include "common.h"
-#define RRDVAR_MAX_LENGTH 1024
-
-int default_localhost_health_enabled = 1;
-
-// ----------------------------------------------------------------------------
-// RRDVAR management
-
-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,
- 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,
- 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;
-}
-
-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;
-}
-
-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++;
-}
-
-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
- }
- }
-}
-
-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);
-}
+int default_health_enabled = 1;
// ----------------------------------------------------------------------------
// health initialization
inline char *health_config_dir(void) {
char buffer[FILENAME_MAX + 1];
snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_config_dir);
- return config_get("health", "health configuration directory", buffer);
+ return config_get(CONFIG_SECTION_HEALTH, "health configuration directory", buffer);
}
void health_init(void) {
debug(D_HEALTH, "Health configuration initializing");
- if(!(default_localhost_health_enabled = config_get_boolean("health", "enabled", 1))) {
+ if(!(default_health_enabled = config_get_boolean(CONFIG_SECTION_HEALTH, "enabled", 1))) {
debug(D_HEALTH, "Health is disabled.");
return;
}
-
- char pathname[FILENAME_MAX + 1];
- snprintfz(pathname, FILENAME_MAX, "%s/health", netdata_configured_varlib_dir);
- if(mkdir(pathname, 0770) == -1 && errno != EEXIST)
- fatal("Cannot create directory '%s'.", pathname);
}
// ----------------------------------------------------------------------------
// re-load health configuration
-inline void health_free_host_nolock(RRDHOST *host) {
+void health_reload_host(RRDHOST *host) {
+ if(unlikely(!host->health_enabled))
+ return;
+
+ char *path = health_config_dir();
+
+ // free all running alarms
+ rrdhost_wrlock(host);
+
while(host->templates)
rrdcalctemplate_free(host, host->templates);
while(host->alarms)
rrdcalc_free(host, host->alarms);
-}
-void health_reload_host(RRDHOST *host) {
- char *path = health_config_dir();
-
- // free all running alarms
- rrdhost_wrlock(host);
- health_free_host_nolock(host);
rrdhost_unlock(host);
// invalidate all previous entries in the alarm log
t->flags |= HEALTH_ENTRY_FLAG_UPDATED;
}
+ rrdhost_rdlock(host);
// reset all thresholds to all charts
RRDSET *st;
- for(st = host->rrdset_root; st ; st = st->next) {
+ rrdset_foreach_read(st, host) {
st->green = NAN;
st->red = NAN;
}
+ rrdhost_unlock(host);
// load the new alarms
rrdhost_wrlock(host);
health_readdir(host, path);
- rrdhost_unlock(host);
// link the loaded alarms to their charts
- for(st = host->rrdset_root; st ; st = st->next) {
- rrdhost_wrlock(host);
-
+ rrdset_foreach_write(st, host) {
rrdsetcalc_link_matching(st);
rrdcalctemplate_link_matching(st);
-
- rrdhost_unlock(host);
}
+
+ rrdhost_unlock(host);
}
void health_reload(void) {
- RRDHOST *host;
- for(host = localhost; host ; host = host->next)
+ rrd_rdlock();
+
+ RRDHOST *host;
+ rrdhost_foreach_read(host)
health_reload_host(host);
+
+ rrd_unlock();
}
// ----------------------------------------------------------------------------
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);
+ netdata_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) {
// remember this for the next iteration
stop_at_id = first_waiting;
- pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+ netdata_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);
+ netdata_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
ALARM_ENTRY *last = NULL;
unsigned int count = host->health_log.max * 2 / 3;
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->old_value_string);
- freez(ae->new_value_string);
- freez(ae);
+ health_alarm_log_free_one_nochecks_nounlink(ae);
ae = t;
host->health_log.count--;
}
- pthread_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
}
static inline int rrdcalc_isrunnable(RRDCALC *rc, time_t now, time_t *next_run) {
return 0;
}
+ if(unlikely(rrdset_flag_check(rc->rrdset, RRDSET_FLAG_OBSOLETE))) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. The chart has been marked as obsolete", rc->chart?rc->chart:"NOCHART", rc->name);
+ return 0;
+ }
+
+ if(unlikely(!rrdset_flag_check(rc->rrdset, RRDSET_FLAG_ENABLED))) {
+ debug(D_HEALTH, "Health not running alarm '%s.%s'. The chart is not enabled", 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;
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);
+ int min_run_every = (int)config_get_number(CONFIG_SECTION_HEALTH, "run at least every seconds", 10);
if(min_run_every < 1) min_run_every = 1;
BUFFER *wb = buffer_create(100);
+ time_t now = now_realtime_sec();
+ time_t now_boottime = now_boottime_sec();
+ time_t last_now = now;
+ time_t last_now_boottime = now_boottime;
+ time_t hibernation_delay = config_get_number(CONFIG_SECTION_HEALTH, "postpone alarms during hibernation for seconds", 60);
+
unsigned int loop = 0;
while(!netdata_exit) {
loop++;
debug(D_HEALTH, "Health monitoring iteration no %u started", loop);
- int oldstate, runnable = 0;
- time_t now = now_realtime_sec();
+ int oldstate, runnable = 0, apply_hibernation_delay = 0;
time_t next_run = now + min_run_every;
RRDCALC *rc;
+ // detect if boottime and realtime have twice the difference
+ // in which case we assume the system was just waken from hibernation
+ if(unlikely(now - last_now > 2 * (now_boottime - last_now_boottime)))
+ apply_hibernation_delay = 1;
+
+ last_now = now;
+ last_now_boottime = now_boottime;
+
if(unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 0))
error("Cannot set pthread cancel state to DISABLE.");
+ rrd_rdlock();
+
RRDHOST *host;
- for(host = localhost; host ; host = host->next) {
- if(unlikely(!host->health_enabled)) continue;
+ rrdhost_foreach_read(host) {
+ if(unlikely(!host->health_enabled))
+ continue;
+
+ if(unlikely(apply_hibernation_delay)) {
+
+ info("Postponing alarm checks for %ld seconds, on host '%s', due to boottime discrepancy (realtime dt: %ld, boottime dt: %ld)."
+ , hibernation_delay
+ , host->hostname
+ , (long)(now - last_now)
+ , (long)(now_boottime - last_now_boottime)
+ );
+
+ host->health_delay_up_to = now + hibernation_delay;
+ }
+
+ if(unlikely(!host->health_enabled || now < host->health_delay_up_to))
+ continue;
rrdhost_rdlock(host);
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 there is database lookup, do 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);
+ int ret = rrdset2value_api_v1(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 on host '%s', alarm '%s.%s': database lookup returned error %d", host->hostname, 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 on host '%s', alarm '%s.%s': database lookup returned error %d", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name, ret);
- }
+ rc->rrdcalc_flags |= RRDCALC_FLAG_DB_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': database lookup returned error %d"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , ret
+ );
}
- else if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_ERROR))
+ else
rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_ERROR;
/* - RRDCALC_FLAG_DB_STALE not currently used
if(unlikely(value_is_null)) {
// collected value is null
-
rc->value = NAN;
+ rc->rrdcalc_flags |= RRDCALC_FLAG_DB_NAN;
- debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)", host->hostname, 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 on host '%s', alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name);
- }
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': database lookup returned empty value (possibly value is not collected yet)"
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ );
}
- else if(unlikely(rc->rrdcalc_flags & RRDCALC_FLAG_DB_NAN))
+ else
rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_NAN;
- debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': database lookup gave value " CALCULATED_NUMBER_FORMAT, host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name, rc->value);
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': database lookup gave value " CALCULATED_NUMBER_FORMAT
+ , host->hostname
+ , rc->chart ? rc->chart : "NOCHART"
+ , rc->name
+ , rc->value
+ );
}
+ // ------------------------------------------------------------
+ // if there is calculation expression, run it
+
if(unlikely(rc->calculation)) {
if(unlikely(!expression_evaluate(rc->calculation))) {
// calculation failed
-
rc->value = NAN;
-
- debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': expression '%s' failed: %s", host->hostname, 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 on host '%s', alarm '%s.%s': expression '%s' failed: %s", rc->chart ? rc->chart : "NOCHART", host->hostname, rc->name, rc->calculation->parsed_as, buffer_tostring(rc->calculation->error_msg));
- }
+ rc->rrdcalc_flags |= RRDCALC_FLAG_CALC_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': expression '%s' failed: %s"
+ , host->hostname
+ , 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 on host '%s', alarm '%s.%s': expression '%s' gave value "
- CALCULATED_NUMBER_FORMAT
- ": %s (source: %s)", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name
- , rc->calculation->parsed_as, rc->calculation->result,
- buffer_tostring(rc->calculation->error_msg), rc->source
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_CALC_ERROR;
+
+ debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': expression '%s' gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)"
+ , host->hostname
+ , 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;
if(unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_RUNNABLE)))
continue;
- int warning_status = RRDCALC_STATUS_UNDEFINED;
+ int warning_status = RRDCALC_STATUS_UNDEFINED;
int critical_status = RRDCALC_STATUS_UNDEFINED;
+ // --------------------------------------------------------
+ // check the warning expression
+
if(likely(rc->warning)) {
if(unlikely(!expression_evaluate(rc->warning))) {
// calculation failed
-
- debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': warning expression failed with error: %s", host->hostname, 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 on host '%s', alarm '%s.%s': warning expression failed with error: %s", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name, buffer_tostring(rc->warning->error_msg));
- }
+ rc->rrdcalc_flags |= RRDCALC_FLAG_WARN_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': warning expression failed with error: %s"
+ , host->hostname
+ , 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 on host '%s', alarm '%s.%s': warning expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name, rc->warning->result, buffer_tostring(rc->warning->error_msg), rc->source);
-
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_WARN_ERROR;
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': warning expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)"
+ , host->hostname
+ , 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);
}
}
+ // --------------------------------------------------------
+ // check the critical expression
+
if(likely(rc->critical)) {
if(unlikely(!expression_evaluate(rc->critical))) {
// calculation failed
-
- debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': critical expression failed with error: %s", host->hostname, 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 on host '%s', alarm '%s.%s': critical expression failed with error: %s", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name, buffer_tostring(rc->critical->error_msg));
- }
+ rc->rrdcalc_flags |= RRDCALC_FLAG_CRIT_ERROR;
+
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': critical expression failed with error: %s"
+ , host->hostname
+ , 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 on host '%s', alarm '%s.%s': critical expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)", host->hostname, rc->chart ? rc->chart : "NOCHART", rc->name , rc->critical->result, buffer_tostring(rc->critical->error_msg), rc->source);
-
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_CRIT_ERROR;
+ debug(D_HEALTH
+ , "Health on host '%s', alarm '%s.%s': critical expression gave value " CALCULATED_NUMBER_FORMAT ": %s (source: %s)"
+ , host->hostname
+ , 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);
}
}
+ // --------------------------------------------------------
+ // decide the final alarm status
+
int status = RRDCALC_STATUS_UNDEFINED;
switch(warning_status) {
break;
}
+ // --------------------------------------------------------
+ // check if the new status and the old differ
+
if(status != rc->status) {
int delay = 0;
+ // apply trigger hysteresis
+
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 = delay;
rc->delay_up_to_timestamp = now + delay;
+
+ // add the alarm into the log
+
health_alarm_log(
- host, 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->options & RRDCALC_FLAG_NO_CLEAR_NOTIFICATION)
- ? HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION : 0
+ host
+ , 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->options & RRDCALC_FLAG_NO_CLEAR_NOTIFICATION) ? HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION : 0
);
+
rc->last_status_change = now;
rc->status = status;
}
if(unlikely(netdata_exit))
break;
- } /* host loop */
+ } /* rrdhost_foreach */
+
+ rrd_unlock();
if(unlikely(pthread_setcancelstate(oldstate, NULL) != 0))
error("Cannot set pthread cancel state to RESTORE (%d).", oldstate);
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));
+ now = now_realtime_sec();
}
else
debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop);
- }
+
+ now_boottime = now_boottime_sec();
+
+ } // forever
buffer_free(wb);
projects / netdata.git / blobdiff