+#define NETDATA_HEALTH_INTERNALS
#include "common.h"
-#define RRDVAR_MAX_LENGTH 1024
+int default_health_enabled = 1;
-static const char *health_default_exec = PLUGINS_DIR "/alarm-email.sh";
-int health_enabled = 1;
-
-ALARM_LOG health_log = {
- .nextid = 0,
- .count = 0,
- .max = 1000,
- .alarms = NULL
-};
-
-// ----------------------------------------------------------------------------
-// RRDVAR management
-
-static inline int rrdvar_fix_name(char *variable) {
- int fixed = 0;
- while(*variable) {
- if (!isalnum(*variable) && *variable != '.' && *variable != '_') {
- *variable++ = '_';
- fixed++;
- }
- else
- variable++;
- }
-
- return fixed;
-}
-
-int rrdvar_compare(void* a, void* b) {
- if(((RRDVAR *)a)->hash < ((RRDVAR *)b)->hash) return -1;
- else if(((RRDVAR *)a)->hash > ((RRDVAR *)b)->hash) return 1;
- else return strcmp(((RRDVAR *)a)->name, ((RRDVAR *)b)->name);
-}
-
-static inline RRDVAR *rrdvar_index_add(avl_tree_lock *tree, RRDVAR *rv) {
- RRDVAR *ret = (RRDVAR *)avl_insert_lock(tree, (avl *)(rv));
- if(ret != rv)
- debug(D_VARIABLES, "Request to insert RRDVAR '%s' into index failed. Already exists.", rv->name);
-
- return ret;
-}
-
-static inline RRDVAR *rrdvar_index_del(avl_tree_lock *tree, RRDVAR *rv) {
- RRDVAR *ret = (RRDVAR *)avl_remove_lock(tree, (avl *)(rv));
- if(!ret)
- error("Request to remove RRDVAR '%s' from index failed. Not Found.", rv->name);
-
- return ret;
-}
-
-static inline RRDVAR *rrdvar_index_find(avl_tree_lock *tree, const char *name, uint32_t hash) {
- RRDVAR tmp;
- tmp.name = (char *)name;
- tmp.hash = (hash)?hash:simple_hash(tmp.name);
-
- return (RRDVAR *)avl_search_lock(tree, (avl *)&tmp);
-}
-
-static inline void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv) {
- (void)host;
-
- if(!rv) return;
-
- if(tree)
- rrdvar_index_del(tree, rv);
-
- freez(rv->name);
- freez(rv);
-}
-
-static inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, int type, calculated_number *value) {
- char *variable = strdupz(name);
- rrdvar_fix_name(variable);
- uint32_t hash = simple_hash(variable);
-
- RRDVAR *rv = rrdvar_index_find(tree, variable, hash);
- if(unlikely(!rv)) {
- debug(D_VARIABLES, "Variable '%s' not found in scope '%s'. Creating a new one.", variable, scope);
-
- rv = callocz(1, sizeof(RRDVAR));
- rv->name = variable;
- rv->hash = hash;
- rv->type = type;
- rv->value = value;
-
- RRDVAR *ret = rrdvar_index_add(tree, rv);
- if(unlikely(ret != rv)) {
- debug(D_VARIABLES, "Variable '%s' in scope '%s' already exists", variable, scope);
- rrdvar_free(NULL, NULL, rv);
- rv = NULL;
- }
- else
- debug(D_VARIABLES, "Variable '%s' created in scope '%s'", variable, scope);
- }
- else {
- // already exists
- freez(variable);
- rv = NULL;
- }
-
- return rv;
-}
-
-// ----------------------------------------------------------------------------
-// RRDVAR lookup
-
-calculated_number rrdvar2number(RRDVAR *rv) {
- switch(rv->type) {
- case RRDVAR_TYPE_CALCULATED: {
- calculated_number *n = (calculated_number *)rv->value;
- return *n;
- }
-
- case RRDVAR_TYPE_TIME_T: {
- time_t *n = (time_t *)rv->value;
- return *n;
- }
-
- case RRDVAR_TYPE_COLLECTED: {
- collected_number *n = (collected_number *)rv->value;
- return *n;
- }
-
- case RRDVAR_TYPE_TOTAL: {
- total_number *n = (total_number *)rv->value;
- return *n;
- }
-
- case RRDVAR_TYPE_INT: {
- int *n = (int *)rv->value;
- return *n;
- }
-
- default:
- error("I don't know how to convert RRDVAR type %d to calculated_number", rv->type);
- return NAN;
- }
-}
-
-void dump_variable(void *data) {
- RRDVAR *rv = (RRDVAR *)data;
- debug(D_HEALTH, "%50s : %20.5Lf", rv->name, rrdvar2number(rv));
-}
-
-int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result) {
- RRDSET *st = rc->rrdset;
- RRDVAR *rv;
-
- if(!st) return 0;
-
- rv = rrdvar_index_find(&st->variables_root_index, variable, hash);
- if(rv) {
- *result = rrdvar2number(rv);
- return 1;
- }
-
- rv = rrdvar_index_find(&st->rrdfamily->variables_root_index, variable, hash);
- if(rv) {
- *result = rrdvar2number(rv);
- return 1;
- }
-
- rv = rrdvar_index_find(&st->rrdhost->variables_root_index, variable, hash);
- if(rv) {
- *result = rrdvar2number(rv);
- return 1;
- }
-
- debug(D_HEALTH, "Available local chart '%s' variables:", st->id);
- avl_traverse_lock(&st->variables_root_index, dump_variable);
-
- debug(D_HEALTH, "Available family '%s' variables:", st->rrdfamily->family);
- avl_traverse_lock(&st->rrdfamily->variables_root_index, dump_variable);
-
- debug(D_HEALTH, "Available host '%s' variables:", st->rrdhost->hostname);
- avl_traverse_lock(&st->rrdhost->variables_root_index, dump_variable);
-
- return 0;
-}
-
-// ----------------------------------------------------------------------------
-// RRDSETVAR management
-
-RRDSETVAR *rrdsetvar_create(RRDSET *st, const char *variable, int type, void *value, uint32_t options) {
- debug(D_VARIABLES, "RRDVARSET create for chart id '%s' name '%s' with variable name '%s'", st->id, st->name, variable);
- RRDSETVAR *rs = (RRDSETVAR *)callocz(1, sizeof(RRDSETVAR));
-
- char buffer[RRDVAR_MAX_LENGTH + 1];
- snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->id, variable);
- rs->fullid = strdupz(buffer);
-
- snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, variable);
- rs->fullname = strdupz(buffer);
-
- rs->variable = strdupz(variable);
-
- rs->type = type;
- rs->value = value;
- rs->options = options;
- rs->rrdset = st;
-
- rs->local = rrdvar_create_and_index("local", &st->variables_root_index, rs->variable, rs->type, rs->value);
- rs->family = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullid, rs->type, rs->value);
- rs->host = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullid, rs->type, rs->value);
- rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value);
- rs->host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value);
-
- rs->next = st->variables;
- st->variables = rs;
-
- return rs;
-}
-
-void rrdsetvar_rename_all(RRDSET *st) {
- debug(D_VARIABLES, "RRDSETVAR rename for chart id '%s' name '%s'", st->id, st->name);
-
- // only these 2 can change name
- // rs->family_name
- // rs->host_name
-
- char buffer[RRDVAR_MAX_LENGTH + 1];
- RRDSETVAR *rs, *next = st->variables;
- while((rs = next)) {
- next = rs->next;
-
- snprintfz(buffer, RRDVAR_MAX_LENGTH, "%s.%s", st->name, rs->variable);
-
- if (strcmp(buffer, rs->fullname)) {
- // name changed
- rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name);
-
- freez(rs->fullname);
- rs->fullname = strdupz(st->name);
- rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->fullname, rs->type, rs->value);
- rs->host_name = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullname, rs->type, rs->value);
- }
- }
-
- rrdsetcalc_link_matching(st);
-}
-
-void rrdsetvar_free(RRDSETVAR *rs) {
- RRDSET *st = rs->rrdset;
- debug(D_VARIABLES, "RRDSETVAR free for chart id '%s' name '%s', variable '%s'", st->id, st->name, rs->variable);
-
- rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local);
- rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family);
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host);
- rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_name);
-
- if(st->variables == rs) {
- st->variables = rs->next;
- }
- else {
- RRDSETVAR *t;
- for (t = st->variables; t && t->next != rs; t = t->next);
- if(!t) error("RRDSETVAR '%s' not found in chart '%s' variables linked list", rs->fullname, st->id);
- else t->next = rs->next;
- }
-
- freez(rs->fullid);
- freez(rs->fullname);
- freez(rs->variable);
- freez(rs);
-}
-
-// ----------------------------------------------------------------------------
-// RRDDIMVAR management
-
-#define RRDDIMVAR_ID_MAX 1024
-
-RRDDIMVAR *rrddimvar_create(RRDDIM *rd, int type, const char *prefix, const char *suffix, void *value, uint32_t options) {
- RRDSET *st = rd->rrdset;
-
- debug(D_VARIABLES, "RRDDIMSET create for chart id '%s' name '%s', dimension id '%s', name '%s%s%s'", st->id, st->name, rd->id, (prefix)?prefix:"", rd->name, (suffix)?suffix:"");
-
- if(!prefix) prefix = "";
- if(!suffix) suffix = "";
-
- char buffer[RRDDIMVAR_ID_MAX + 1];
- RRDDIMVAR *rs = (RRDDIMVAR *)callocz(1, sizeof(RRDDIMVAR));
-
- rs->prefix = strdupz(prefix);
- rs->suffix = strdupz(suffix);
-
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->id, rs->suffix);
- rs->id = strdupz(buffer);
-
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix);
- rs->name = strdupz(buffer);
-
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->id, rs->id);
- rs->fullidid = strdupz(buffer);
-
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->id, rs->name);
- rs->fullidname = strdupz(buffer);
-
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->name, rs->id);
- rs->fullnameid = strdupz(buffer);
-
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", rd->rrdset->name, rs->name);
- rs->fullnamename = strdupz(buffer);
-
- rs->type = type;
- rs->value = value;
- rs->options = options;
- rs->rrddim = rd;
-
- rs->local_id = rrdvar_create_and_index("local", &st->variables_root_index, rs->id, rs->type, rs->value);
- rs->local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value);
-
- rs->family_id = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->id, rs->type, rs->value);
- rs->family_name = rrdvar_create_and_index("family", &st->rrdfamily->variables_root_index, rs->name, rs->type, rs->value);
-
- rs->host_fullidid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidid, rs->type, rs->value);
- rs->host_fullidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullidname, rs->type, rs->value);
- rs->host_fullnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnameid, rs->type, rs->value);
- rs->host_fullnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index, rs->fullnamename, rs->type, rs->value);
-
- rs->next = rd->variables;
- rd->variables = rs;
-
- return rs;
-}
-
-void rrddimvar_rename_all(RRDDIM *rd) {
- RRDSET *st = rd->rrdset;
- debug(D_VARIABLES, "RRDDIMSET rename for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
-
- RRDDIMVAR *rs, *next = rd->variables;
- while((rs = next)) {
- next = rs->next;
-
- if (strcmp(rd->name, rs->name)) {
- char buffer[RRDDIMVAR_ID_MAX + 1];
- // name changed
-
- // name
- rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name);
- freez(rs->name);
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s%s%s", rs->prefix, rd->name, rs->suffix);
- rs->name = strdupz(buffer);
- rs->local_name = rrdvar_create_and_index("local", &st->variables_root_index, rs->name, rs->type, rs->value);
-
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname);
- freez(rs->fullidname);
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->id, rs->name);
- rs->fullidname = strdupz(buffer);
- rs->host_fullidname = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index,
- rs->fullidname, rs->type, rs->value);
-
- // fullnameid
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid);
- freez(rs->fullnameid);
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->id);
- rs->fullnameid = strdupz(buffer);
- rs->host_fullnameid = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index,
- rs->fullnameid, rs->type, rs->value);
-
- // fullnamename
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename);
- freez(rs->fullnamename);
- snprintfz(buffer, RRDDIMVAR_ID_MAX, "%s.%s", st->name, rs->name);
- rs->fullnamename = strdupz(buffer);
- rs->host_fullnamename = rrdvar_create_and_index("host", &st->rrdhost->variables_root_index,
- rs->fullnamename, rs->type, rs->value);
- }
- }
-}
-
-void rrddimvar_free(RRDDIMVAR *rs) {
- RRDDIM *rd = rs->rrddim;
- RRDSET *st = rd->rrdset;
- debug(D_VARIABLES, "RRDDIMSET free for chart id '%s' name '%s', dimension id '%s', name '%s', prefix='%s', suffix='%s'", st->id, st->name, rd->id, rd->name, rs->prefix, rs->suffix);
-
- rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_id);
- rrdvar_free(st->rrdhost, &st->variables_root_index, rs->local_name);
-
- rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_id);
- rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rs->family_name);
-
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidid);
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullidname);
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnameid);
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rs->host_fullnamename);
-
- if(rd->variables == rs) {
- debug(D_VARIABLES, "RRDDIMSET removing first entry for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
- rd->variables = rs->next;
- }
- else {
- debug(D_VARIABLES, "RRDDIMSET removing non-first entry for chart id '%s' name '%s', dimension id '%s', name '%s'", st->id, st->name, rd->id, rd->name);
- RRDDIMVAR *t;
- for (t = rd->variables; t && t->next != rs; t = t->next) ;
- if(!t) error("RRDDIMVAR '%s' not found in dimension '%s/%s' variables linked list", rs->name, st->id, rd->id);
- else t->next = rs->next;
- }
-
- freez(rs->prefix);
- freez(rs->suffix);
- freez(rs->id);
- freez(rs->name);
- freez(rs->fullidid);
- freez(rs->fullidname);
- freez(rs->fullnameid);
- freez(rs->fullnamename);
- freez(rs);
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALC management
-
-static 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->rrdset = st;
-
- 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);
-}
-
-static inline int rrdcalc_is_matching_this_rrdset(RRDCALC *rc, RRDSET *st) {
- if( (rc->hash_chart == st->hash && !strcmp(rc->chart, st->id)) ||
- (rc->hash_chart == st->hash_name && !strcmp(rc->chart, st->name)))
- return 1;
-
- return 0;
-}
-
-// this has to be called while the RRDHOST is locked
-inline void rrdsetcalc_link_matching(RRDSET *st) {
- // debug(D_HEALTH, "find matching alarms for chart '%s'", st->id);
-
- RRDCALC *rc;
- for(rc = st->rrdhost->alarms; rc ; rc = rc->next) {
- if(rc->rrdset) continue;
-
- if(rrdcalc_is_matching_this_rrdset(rc, st))
- rrdsetcalc_link(st, rc);
- }
-}
-
-// this has to be called while the RRDHOST is locked
-inline void rrdsetcalc_unlink(RRDCALC *rc) {
- RRDSET *st = rc->rrdset;
-
- if(!st) {
- error("Requested to unlink RRDCALC '%s.%s' which is not linked to any RRDSET", rc->chart?rc->chart:"NOCHART", rc->name);
- return;
- }
-
- RRDHOST *host = st->rrdhost;
-
- debug(D_HEALTH, "Health unlinking alarm '%s.%s' from chart '%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, st->id, host->hostname);
-
- // unlink it
- if(rc->rrdset_prev)
- rc->rrdset_prev->rrdset_next = rc->rrdset_next;
-
- if(rc->rrdset_next)
- rc->rrdset_next->rrdset_prev = rc->rrdset_prev;
-
- if(st->alarms == rc)
- st->alarms = rc->rrdset_next;
-
- rc->rrdset_prev = rc->rrdset_next = NULL;
-
- rrdvar_free(st->rrdhost, &st->variables_root_index, rc->local);
- rc->local = NULL;
-
- rrdvar_free(st->rrdhost, &st->rrdfamily->variables_root_index, rc->family);
- rc->family = NULL;
-
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rc->hostid);
- rc->hostid = NULL;
-
- rrdvar_free(st->rrdhost, &st->rrdhost->variables_root_index, rc->hostname);
- rc->hostname = NULL;
-
- rc->rrdset = NULL;
-
- // RRDCALC will remain in RRDHOST
- // so that if the matching chart is found in the future
- // it will be applied automatically
-}
-
-static inline int rrdcalc_exists(RRDHOST *host, const char *name, uint32_t hash) {
- RRDCALC *rc;
-
- // make sure it does not already exist
- for(rc = host->alarms; rc ; rc = rc->next) {
- if (rc->hash == hash && !strcmp(name, rc->name)) {
- error("Health alarm '%s' already exists in host '%s'.", name, host->hostname);
- return 1;
- }
- }
-
- return 0;
-}
-
-static inline void rrdcalc_create_part2(RRDHOST *host, RRDCALC *rc) {
- rrdhost_check_rdlock(host);
-
- if(rc->calculation) {
- rc->calculation->this = &rc->value;
- rc->calculation->rrdcalc = rc;
- }
-
- if(rc->warning) {
- rc->warning->this = &rc->value;
- rc->warning->rrdcalc = rc;
- }
-
- if(rc->critical) {
- rc->critical->this = &rc->value;
- rc->critical->rrdcalc = rc;
- }
-
- // link it to the host
- rc->next = host->alarms;
- host->alarms = rc;
-
- // link it to its chart
- RRDSET *st;
- for(st = host->rrdset_root; st ; st = st->next) {
- if(rrdcalc_is_matching_this_rrdset(rc, st)) {
- rrdsetcalc_link(st, rc);
- break;
- }
- }
-}
-
-static inline uint32_t rrdcalc_fullname(char *fullname, size_t len, const char *chart, const char *name) {
- snprintfz(fullname, len - 1, "%s%s%s", chart?chart:"", chart?".":"", name);
- rrdvar_fix_name(fullname);
- return simple_hash(fullname);
-}
-
-static inline RRDCALC *rrdcalc_create(RRDHOST *host, const char *name, const char *chart, const char *dimensions, int group_method,
- int after, int before, int update_every, uint32_t options,
- calculated_number green, calculated_number red,
- const char *exec, const char *source,
- const char *calc, const char *warn, const char *crit) {
-
- char fullname[RRDVAR_MAX_LENGTH + 1];
- uint32_t hash = rrdcalc_fullname(fullname, RRDVAR_MAX_LENGTH + 1, chart, name);
-
- if(rrdcalc_exists(host, fullname, hash))
- return NULL;
-
- RRDCALC *rc = callocz(1, sizeof(RRDCALC));
-
- rc->name = strdupz(name);
- rc->hash = simple_hash(rc->name);
-
- rc->chart = strdupz(chart);
- rc->hash_chart = simple_hash(rc->chart);
-
- if(dimensions) rc->dimensions = strdupz(dimensions);
-
- rc->green = green;
- rc->red = red;
- rc->value = NAN;
- rc->old_value = NAN;
-
- rc->group = group_method;
- rc->after = after;
- rc->before = before;
- rc->update_every = update_every;
- rc->options = options;
-
- if(exec) rc->exec = strdupz(exec);
- if(source) rc->source = strdupz(source);
-
- if(calc) {
- rc->calculation = expression_parse(calc, NULL, NULL);
- if(!rc->calculation)
- error("Health alarm '%s.%s': failed to parse calculation expression '%s'", chart, name, calc);
- }
- if(warn) {
- rc->warning = expression_parse(warn, NULL, NULL);
- if(!rc->warning)
- error("Health alarm '%s.%s': failed to re-parse warning expression '%s'", chart, name, warn);
- }
- if(crit) {
- rc->critical = expression_parse(crit, NULL, NULL);
- if(!rc->critical)
- error("Health alarm '%s.%s': failed to re-parse critical expression '%s'", chart, name, crit);
- }
-
- debug(D_HEALTH, "Health runtime added alarm '%s.%s': exec '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s",
- (rc->chart)?rc->chart:"NOCHART",
- rc->name,
- (rc->exec)?rc->exec:"DEFAULT",
- rc->green,
- rc->red,
- rc->group,
- rc->after,
- rc->before,
- rc->options,
- (rc->dimensions)?rc->dimensions:"NONE",
- rc->update_every,
- (rc->calculation)?rc->calculation->parsed_as:"NONE",
- (rc->warning)?rc->warning->parsed_as:"NONE",
- (rc->critical)?rc->critical->parsed_as:"NONE",
- rc->source
- );
-
- rrdcalc_create_part2(host, rc);
- return rc;
-}
-
-void rrdcalc_free(RRDHOST *host, RRDCALC *rc) {
- if(!rc) return;
-
- debug(D_HEALTH, "Health removing alarm '%s.%s' of host '%s'", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
-
- // unlink it from RRDSET
- if(rc->rrdset) rrdsetcalc_unlink(rc);
-
- // unlink it from RRDHOST
- if(rc == host->alarms)
- host->alarms = rc->next;
-
- else if(host->alarms) {
- RRDCALC *t, *last = host->alarms;
-
- for(t = last->next; t && t != rc; last = t, t = t->next) ;
- if(last && last->next == rc)
- last->next = rc->next;
- else
- error("Cannot unlink alarm '%s.%s' from host '%s': not found", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
- }
- else
- error("Cannot unlink unlink '%s.%s' from host '%s': This host does not have any calculations", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
-
- expression_free(rc->calculation);
- expression_free(rc->warning);
- expression_free(rc->critical);
-
- freez(rc->source);
- freez(rc->name);
- freez(rc->chart);
- freez(rc->dimensions);
- freez(rc->exec);
- freez(rc);
-}
-
-// ----------------------------------------------------------------------------
-// RRDCALCTEMPLATE management
-
-void rrdcalctemplate_link_matching(RRDSET *st) {
- RRDCALCTEMPLATE *rt;
-
- for(rt = st->rrdhost->templates; rt ; rt = rt->next) {
- if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context)) {
-
- RRDCALC *rc = rrdcalc_create(st->rrdhost, rt->name, st->id,
- rt->dimensions, rt->group, rt->after, rt->before, rt->update_every, rt->options,
- rt->green, rt->red, rt->exec, rt->source,
- (rt->calculation)?rt->calculation->source:NULL,
- (rt->warning)?rt->warning->source:NULL,
- (rt->critical)?rt->critical->source:NULL);
-
- if(!rc)
- error("Health tried to create alarm from template '%s', but it failed", rt->name);
-
-#ifdef NETDATA_INTERNAL_CHECKS
- else if(rc->rrdset != st)
- error("Health alarm '%s.%s' should be linked to chart '%s', but it is not", rc->chart?rc->chart:"NOCHART", rc->name, st->id);
-#else
- (void)rc;
-#endif
- }
- }
-}
-
-static inline void rrdcalctemplate_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
- debug(D_HEALTH, "Health removing template '%s' of host '%s'", rt->name, host->hostname);
-
- if(host->templates) {
- if(host->templates == rt) {
- host->templates = rt->next;
- }
- else {
- RRDCALCTEMPLATE *t, *last = host->templates;
- for (t = last->next; t && t != rt; last = t, t = t->next ) ;
- if(last && last->next == rt) {
- last->next = rt->next;
- rt->next = NULL;
- }
- else
- error("Cannot find RRDCALCTEMPLATE '%s' linked in host '%s'", rt->name, host->hostname);
- }
- }
-
- expression_free(rt->calculation);
- expression_free(rt->warning);
- expression_free(rt->critical);
-
- freez(rt->dimensions);
- freez(rt->context);
- freez(rt->name);
- freez(rt->exec);
- freez(rt->source);
- freez(rt);
-}
-
-// ----------------------------------------------------------------------------
-// load health configuration
-
-#define HEALTH_CONF_MAX_LINE 4096
-
-#define HEALTH_ALARM_KEY "alarm"
-#define HEALTH_TEMPLATE_KEY "template"
-#define HEALTH_ON_KEY "on"
-#define HEALTH_LOOKUP_KEY "lookup"
-#define HEALTH_CALC_KEY "calc"
-#define HEALTH_EVERY_KEY "every"
-#define HEALTH_GREEN_KEY "green"
-#define HEALTH_RED_KEY "red"
-#define HEALTH_WARN_KEY "warn"
-#define HEALTH_CRIT_KEY "crit"
-#define HEALTH_EXEC_KEY "exec"
-
-static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) {
- {
- char fullname[RRDVAR_MAX_LENGTH + 1];
- uint32_t hash = rrdcalc_fullname(fullname, RRDVAR_MAX_LENGTH + 1, rc->chart, rc->name);
-
- if (rrdcalc_exists(host, fullname, hash))
- return 0;
- }
-
- if(!rc->chart) {
- error("Health configuration for alarm '%s' does not have a chart", rc->name);
- return 0;
- }
-
- if(!rc->update_every) {
- error("Health configuration for alarm '%s.%s' has no frequency (parameter 'every'). Ignoring it.", rc->chart?rc->chart:"NOCHART", rc->name);
- return 0;
- }
-
- if(!RRDCALC_HAS_DB_LOOKUP(rc) && !rc->warning && !rc->critical) {
- error("Health configuration for alarm '%s.%s' is useless (no calculation, no warning and no critical evaluation)", rc->chart?rc->chart:"NOCHART", rc->name);
- return 0;
- }
-
- debug(D_HEALTH, "Health configuration adding alarm '%s.%s': exec '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s",
- rc->chart?rc->chart:"NOCHART",
- rc->name,
- (rc->exec)?rc->exec:"DEFAULT",
- rc->green,
- rc->red,
- rc->group,
- rc->after,
- rc->before,
- rc->options,
- (rc->dimensions)?rc->dimensions:"NONE",
- rc->update_every,
- (rc->calculation)?rc->calculation->parsed_as:"NONE",
- (rc->warning)?rc->warning->parsed_as:"NONE",
- (rc->critical)?rc->critical->parsed_as:"NONE",
- rc->source
- );
-
- rrdcalc_create_part2(host, rc);
- return 1;
-}
-
-static inline int rrdcalctemplate_add_template_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) {
- if(!rt->context) {
- error("Health configuration for template '%s' does not have a context", rt->name);
- return 0;
- }
-
- if(!rt->update_every) {
- error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rt->name);
- return 0;
- }
-
- if(!RRDCALCTEMPLATE_HAS_CALCULATION(rt) && !rt->warning && !rt->critical) {
- error("Health configuration for template '%s' is useless (no calculation, no warning and no critical evaluation)", rt->name);
- return 0;
- }
-
- RRDCALCTEMPLATE *t;
- for (t = host->templates; t ; t = t->next) {
- if(t->hash_name == rt->hash_name && !strcmp(t->name, rt->name)) {
- error("Health configuration template '%s' already exists for host '%s'.", rt->name, host->hostname);
- return 0;
- }
- }
-
- debug(D_HEALTH, "Health configuration adding template '%s': context '%s', exec '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s'",
- rt->name,
- (rt->context)?rt->context:"NONE",
- (rt->exec)?rt->exec:"DEFAULT",
- rt->green,
- rt->red,
- rt->group,
- rt->after,
- rt->before,
- rt->options,
- (rt->dimensions)?rt->dimensions:"NONE",
- rt->update_every,
- (rt->calculation)?rt->calculation->parsed_as:"NONE",
- (rt->warning)?rt->warning->parsed_as:"NONE",
- (rt->critical)?rt->critical->parsed_as:"NONE",
- rt->source
- );
-
- rt->next = host->templates;
- host->templates = rt;
- return 1;
-}
-
-static inline int health_parse_duration(char *string, int *result) {
- // make sure it is a number
- if(!*string || !(isdigit(*string) || *string == '+' || *string == '-')) {
- *result = 0;
- return 0;
- }
-
- char *e = NULL;
- calculated_number n = strtold(string, &e);
- if(e && *e) {
- switch (*e) {
- case 'Y':
- *result = (int) (n * 86400 * 365);
- break;
- case 'M':
- *result = (int) (n * 86400 * 30);
- break;
- case 'w':
- *result = (int) (n * 86400 * 7);
- break;
- case 'd':
- *result = (int) (n * 86400);
- break;
- case 'h':
- *result = (int) (n * 3600);
- break;
- case 'm':
- *result = (int) (n * 60);
- break;
-
- default:
- case 's':
- *result = (int) (n);
- break;
- }
- }
- else
- *result = (int)(n);
-
- return 1;
-}
-
-static inline int health_parse_db_lookup(
- size_t line, const char *path, const char *file, char *string,
- int *group_method, int *after, int *before, int *every,
- uint32_t *options, char **dimensions
-) {
- debug(D_HEALTH, "Health configuration parsing database lookup %zu@%s/%s: %s", line, path, file, string);
-
- if(*dimensions) freez(*dimensions);
- *dimensions = NULL;
- *after = 0;
- *before = 0;
- *every = 0;
- *options = 0;
-
- char *s = string, *key;
-
- // first is the group method
- key = s;
- while(*s && !isspace(*s)) s++;
- while(*s && isspace(*s)) *s++ = '\0';
- if(!*s) {
- error("Health configuration invalid chart calculation at line %zu of file '%s/%s': expected group method followed by the 'after' time, but got '%s'",
- line, path, file, key);
- return 0;
- }
-
- if((*group_method = web_client_api_request_v1_data_group(key, -1)) == -1) {
- error("Health configuration at line %zu of file '%s/%s': invalid group method '%s'",
- line, path, file, key);
- return 0;
- }
-
- // then is the 'after' time
- key = s;
- while(*s && !isspace(*s)) s++;
- while(*s && isspace(*s)) *s++ = '\0';
-
- if(!health_parse_duration(key, after)) {
- error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' after group method",
- line, path, file, key);
- return 0;
- }
-
- // sane defaults
- *every = abs(*after);
-
- // now we may have optional parameters
- while(*s) {
- key = s;
- while(*s && !isspace(*s)) s++;
- while(*s && isspace(*s)) *s++ = '\0';
- if(!*key) break;
-
- if(!strcasecmp(key, "at")) {
- char *value = s;
- while(*s && !isspace(*s)) s++;
- while(*s && isspace(*s)) *s++ = '\0';
-
- if (!health_parse_duration(value, before)) {
- error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
- line, path, file, value, key);
- }
- }
- else if(!strcasecmp(key, HEALTH_EVERY_KEY)) {
- char *value = s;
- while(*s && !isspace(*s)) s++;
- while(*s && isspace(*s)) *s++ = '\0';
-
- if (!health_parse_duration(value, every)) {
- error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
- line, path, file, value, key);
- }
- }
- else if(!strcasecmp(key, "absolute") || !strcasecmp(key, "abs") || !strcasecmp(key, "absolute_sum")) {
- *options |= RRDR_OPTION_ABSOLUTE;
- }
- else if(!strcasecmp(key, "min2max")) {
- *options |= RRDR_OPTION_MIN2MAX;
- }
- else if(!strcasecmp(key, "null2zero")) {
- *options |= RRDR_OPTION_NULL2ZERO;
- }
- else if(!strcasecmp(key, "percentage")) {
- *options |= RRDR_OPTION_PERCENTAGE;
- }
- else if(!strcasecmp(key, "unaligned")) {
- *options |= RRDR_OPTION_NOT_ALIGNED;
- }
- else if(!strcasecmp(key, "of")) {
- if(*s && strcasecmp(s, "all"))
- *dimensions = strdupz(s);
- break;
- }
- else {
- error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
- line, path, file, key);
- }
- }
-
- return 1;
-}
-
-static inline char *health_source_file(size_t line, const char *path, const char *filename) {
- char buffer[FILENAME_MAX + 1];
- snprintfz(buffer, FILENAME_MAX, "%zu@%s/%s", line, path, filename);
- return strdupz(buffer);
-}
-
-int health_readfile(const char *path, const char *filename) {
- debug(D_HEALTH, "Health configuration reading file '%s/%s'", path, filename);
-
- static uint32_t hash_alarm = 0, hash_template = 0, hash_on = 0, hash_calc = 0, hash_green = 0, hash_red = 0, hash_warn = 0, hash_crit = 0, hash_exec = 0, hash_every = 0, hash_lookup = 0;
- char buffer[HEALTH_CONF_MAX_LINE + 1];
-
- if(unlikely(!hash_alarm)) {
- hash_alarm = simple_uhash(HEALTH_ALARM_KEY);
- hash_template = simple_uhash(HEALTH_TEMPLATE_KEY);
- hash_on = simple_uhash(HEALTH_ON_KEY);
- hash_calc = simple_uhash(HEALTH_CALC_KEY);
- hash_lookup = simple_uhash(HEALTH_LOOKUP_KEY);
- hash_green = simple_uhash(HEALTH_GREEN_KEY);
- hash_red = simple_uhash(HEALTH_RED_KEY);
- hash_warn = simple_uhash(HEALTH_WARN_KEY);
- hash_crit = simple_uhash(HEALTH_CRIT_KEY);
- hash_exec = simple_uhash(HEALTH_EXEC_KEY);
- hash_every = simple_uhash(HEALTH_EVERY_KEY);
- }
-
- snprintfz(buffer, HEALTH_CONF_MAX_LINE, "%s/%s", path, filename);
- FILE *fp = fopen(buffer, "r");
- if(!fp) {
- error("Health configuration cannot read file '%s'.", buffer);
- return 0;
- }
-
- RRDCALC *rc = NULL;
- RRDCALCTEMPLATE *rt = NULL;
-
- size_t line = 0, append = 0;
- char *s;
- while((s = fgets(&buffer[append], (int)(HEALTH_CONF_MAX_LINE - append), fp)) || append) {
- int stop_appending = !s;
- line++;
- // info("Line %zu of file '%s/%s': '%s'", line, path, filename, s);
- s = trim(buffer);
- if(!s) continue;
- // info("Trimmed line %zu of file '%s/%s': '%s'", line, path, filename, s);
-
- append = strlen(s);
- if(!stop_appending && s[append - 1] == '\\') {
- s[append - 1] = ' ';
- append = &s[append] - buffer;
- if(append < HEALTH_CONF_MAX_LINE)
- continue;
- continue;
- }
- append = 0;
-
- char *key = s;
- while(*s && *s != ':') s++;
- if(!*s) {
- error("Health configuration has invalid line %zu of file '%s/%s'. It does not contain a ':'. Ignoring it.", line, path, filename);
- continue;
- }
- *s = '\0';
- s++;
-
- char *value = s;
- key = trim(key);
- value = trim(value);
-
- if(!key) {
- error("Health configuration has invalid line %zu of file '%s/%s'. Keyword is empty. Ignoring it.", line, path, filename);
- continue;
- }
-
- if(!value) {
- error("Health configuration has invalid line %zu of file '%s/%s'. value is empty. Ignoring it.", line, path, filename);
- continue;
- }
-
- // info("Health file '%s/%s', key '%s', value '%s'", path, filename, key, value);
- uint32_t hash = simple_uhash(key);
-
- if(hash == hash_alarm && !strcasecmp(key, HEALTH_ALARM_KEY)) {
- if(rc && !rrdcalc_add_alarm_from_config(&localhost, rc))
- rrdcalc_free(&localhost, rc);
-
- if(rt) {
- if (!rrdcalctemplate_add_template_from_config(&localhost, rt))
- rrdcalctemplate_free(&localhost, rt);
- rt = NULL;
- }
-
- rc = callocz(1, sizeof(RRDCALC));
- rc->name = strdupz(value);
- rc->hash = simple_hash(rc->name);
- rc->source = health_source_file(line, path, filename);
- rc->green = NAN;
- rc->red = NAN;
- rc->value = NAN;
- rc->old_value = NAN;
-
- if(rrdvar_fix_name(rc->name))
- error("Health configuration renamed alarm '%s' to '%s'", value, rc->name);
- }
- else if(hash == hash_template && !strcasecmp(key, HEALTH_TEMPLATE_KEY)) {
- if(rc) {
- if(!rrdcalc_add_alarm_from_config(&localhost, rc))
- rrdcalc_free(&localhost, rc);
- rc = NULL;
- }
-
- if(rt && !rrdcalctemplate_add_template_from_config(&localhost, rt))
- rrdcalctemplate_free(&localhost, rt);
-
- rt = callocz(1, sizeof(RRDCALCTEMPLATE));
- rt->name = strdupz(value);
- rt->hash_name = simple_hash(rt->name);
- rt->source = health_source_file(line, path, filename);
- rt->green = NAN;
- rt->red = NAN;
-
- if(rrdvar_fix_name(rt->name))
- error("Health configuration renamed template '%s' to '%s'", value, rt->name);
- }
- else if(rc) {
- if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
- if(rc->chart) {
- if(strcmp(rc->chart, value))
- info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
- line, path, filename, rc->name, key, rc->chart, value, value);
-
- freez(rc->chart);
- }
- rc->chart = strdupz(value);
- rc->hash_chart = simple_hash(rc->chart);
- }
- else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
- health_parse_db_lookup(line, path, filename, value, &rc->group, &rc->after, &rc->before,
- &rc->update_every,
- &rc->options, &rc->dimensions);
- }
- else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
- if(!health_parse_duration(value, &rc->update_every))
- info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' cannot parse duration: '%s'.",
- line, path, filename, rc->name, key, value);
- }
- else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
- char *e;
- rc->green = strtold(value, &e);
- if(e && *e) {
- info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
- line, path, filename, rc->name, key, e);
- }
- }
- else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
- char *e;
- rc->red = strtold(value, &e);
- if(e && *e) {
- info("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
- line, path, filename, rc->name, key, e);
- }
- }
- else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
- const char *failed_at = NULL;
- int error = 0;
- rc->calculation = expression_parse(value, &failed_at, &error);
- if(!rc->calculation) {
- error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
- line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
- }
- }
- else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
- const char *failed_at = NULL;
- int error = 0;
- rc->warning = expression_parse(value, &failed_at, &error);
- if(!rc->warning) {
- error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
- line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
- }
- }
- else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
- const char *failed_at = NULL;
- int error = 0;
- rc->critical = expression_parse(value, &failed_at, &error);
- if(!rc->critical) {
- error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
- line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
- }
- }
- else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
- if(rc->exec) {
- if(strcmp(rc->exec, value))
- info("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
- line, path, filename, rc->name, key, rc->exec, value, value);
-
- freez(rc->exec);
- }
- rc->exec = strdupz(value);
- }
- else {
- error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has unknown key '%s'.",
- line, path, filename, rc->name, key);
- }
- }
- else if(rt) {
- if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
- if(rt->context) {
- if(strcmp(rt->context, value))
- info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
- line, path, filename, rt->name, key, rt->context, value, value);
-
- freez(rt->context);
- }
- rt->context = strdupz(value);
- rt->hash_context = simple_hash(rt->context);
- }
- else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
- health_parse_db_lookup(line, path, filename, value, &rt->group, &rt->after, &rt->before,
- &rt->update_every,
- &rt->options, &rt->dimensions);
- }
- else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
- if(!health_parse_duration(value, &rt->update_every))
- info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' cannot parse duration: '%s'.",
- line, path, filename, rt->name, key, value);
- }
- else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
- char *e;
- rt->green = strtold(value, &e);
- if(e && *e) {
- info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
- line, path, filename, rt->name, key, e);
- }
- }
- else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
- char *e;
- rt->red = strtold(value, &e);
- if(e && *e) {
- info("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
- line, path, filename, rt->name, key, e);
- }
- }
- else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
- const char *failed_at = NULL;
- int error = 0;
- rt->calculation = expression_parse(value, &failed_at, &error);
- if(!rt->calculation) {
- error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
- line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
- }
- }
- else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
- const char *failed_at = NULL;
- int error = 0;
- rt->warning = expression_parse(value, &failed_at, &error);
- if(!rt->warning) {
- error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
- line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
- }
- }
- else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
- const char *failed_at = NULL;
- int error = 0;
- rt->critical = expression_parse(value, &failed_at, &error);
- if(!rt->critical) {
- error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
- line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
- }
- }
- else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
- if(rt->exec) {
- if(strcmp(rt->exec, value))
- info("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
- line, path, filename, rt->name, key, rt->exec, value, value);
-
- freez(rt->exec);
- }
- rt->exec = strdupz(value);
- }
- else {
- error("Health configuration at line %zu of file '%s/%s' for template '%s' has unknown key '%s'.",
- line, path, filename, rt->name, key);
- }
- }
- else {
- error("Health configuration at line %zu of file '%s/%s' has unknown key '%s'. Expected either '" HEALTH_ALARM_KEY "' or '" HEALTH_TEMPLATE_KEY "'.",
- line, path, filename, key);
- }
- }
-
- if(rc && !rrdcalc_add_alarm_from_config(&localhost, rc))
- rrdcalc_free(&localhost, rc);
-
- if(rt && !rrdcalctemplate_add_template_from_config(&localhost, rt))
- rrdcalctemplate_free(&localhost, rt);
-
- fclose(fp);
- return 1;
-}
-
-void health_readdir(const char *path) {
- size_t pathlen = strlen(path);
-
- debug(D_HEALTH, "Health configuration reading directory '%s'", path);
-
- DIR *dir = opendir(path);
- if (!dir) {
- error("Health configuration cannot open directory '%s'.", path);
- return;
- }
-
- struct dirent *de = NULL;
- while ((de = readdir(dir))) {
- size_t len = strlen(de->d_name);
-
- if(de->d_type == DT_DIR
- && (
- (de->d_name[0] == '.' && de->d_name[1] == '\0')
- || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
- ))
- continue;
-
- else if(de->d_type == DT_DIR) {
- char *s = mallocz(pathlen + strlen(de->d_name) + 2);
- strcpy(s, path);
- strcat(s, "/");
- strcat(s, de->d_name);
- health_readdir(s);
- freez(s);
- continue;
- }
-
- else if((de->d_type == DT_LNK || de->d_type == DT_REG) &&
- len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
- health_readfile(path, de->d_name);
- }
- }
-
- closedir(dir);
-}
+// ----------------------------------------------------------------------------
+// health initialization
-static inline char *health_config_dir(void) {
+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);
+ snprintfz(buffer, FILENAME_MAX, "%s/health.d", netdata_configured_config_dir);
+ return config_get(CONFIG_SECTION_HEALTH, "health configuration directory", buffer);
}
void health_init(void) {
debug(D_HEALTH, "Health configuration initializing");
- if(!(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 *path = health_config_dir();
-
- {
- char buffer[FILENAME_MAX + 1];
- snprintfz(buffer, FILENAME_MAX, "%s/alarm-email.sh", config_get("global", "plugins directory", PLUGINS_DIR));
- health_default_exec = config_get("health", "script to execute on alarm", buffer);
- }
-
- long n = config_get_number("health", "in memory max health log entries", (long)health_log.max);
- if(n < 2) {
- error("Health configuration has invalid max log entries %ld. Using default %u", n, health_log.max);
- config_set_number("health", "in memory max health log entries", (long)health_log.max);
- }
- else health_log.max = (unsigned int)n;
-
- rrdhost_rwlock(&localhost);
- health_readdir(path);
- rrdhost_unlock(&localhost);
}
// ----------------------------------------------------------------------------
// re-load health configuration
-static inline void health_free_all_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(void) {
- if(!health_enabled) {
- error("Health reload is requested, but health is not enabled.");
- return;
- }
-
- char *path = health_config_dir();
- rrdhost_rwlock(&localhost);
- health_free_all_nolock(&localhost);
- rrdhost_unlock(&localhost);
+ rrdhost_unlock(host);
- rrdhost_rwlock(&localhost);
- health_readdir(path);
- rrdhost_unlock(&localhost);
+ // invalidate all previous entries in the alarm log
+ ALARM_ENTRY *t;
+ for(t = host->health_log.alarms ; t ; t = t->next) {
+ if(t->new_status != RRDCALC_STATUS_REMOVED)
+ t->flags |= HEALTH_ENTRY_FLAG_UPDATED;
+ }
+ rrdhost_rdlock(host);
+ // reset all thresholds to all charts
RRDSET *st;
- for(st = localhost.rrdset_root; st ; st = st->next) {
- rrdhost_rwlock(&localhost);
-
+ 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);
+ // link the loaded alarms to their charts
+ rrdset_foreach_write(st, host) {
rrdsetcalc_link_matching(st);
rrdcalctemplate_link_matching(st);
-
- rrdhost_unlock(&localhost);
}
-}
-
-
-// ----------------------------------------------------------------------------
-// health main thread and friends
-static inline int rrdcalc_isrunnable(RRDCALC *rc, time_t now, time_t *next_run) {
- if (unlikely(!rc->rrdset)) {
- debug(D_HEALTH, "Health not running alarm '%s.%s'. It is not linked to a chart.", rc->chart?rc->chart:"NOCHART", rc->name);
- return 0;
- }
+ rrdhost_unlock(host);
+}
- 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;
- }
+void health_reload(void) {
- if (unlikely(rc->next_update > now)) {
- if (*next_run > rc->next_update)
- *next_run = rc->next_update;
+ rrd_rdlock();
- 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;
- }
+ RRDHOST *host;
+ rrdhost_foreach_read(host)
+ health_reload_host(host);
- return 1;
+ rrd_unlock();
}
+// ----------------------------------------------------------------------------
+// health main thread and friends
+
static inline int rrdcalc_value2status(calculated_number n) {
- if(isnan(n)) return RRDCALC_STATUS_UNDEFINED;
+ if(isnan(n) || isinf(n)) return RRDCALC_STATUS_UNDEFINED;
if(n) return RRDCALC_STATUS_RAISED;
return RRDCALC_STATUS_CLEAR;
}
-static inline const char *rrdcalc_status2string(int status) {
- switch(status) {
- case RRDCALC_STATUS_UNINITIALIZED:
- return "UNINITIALIZED";
-
- case RRDCALC_STATUS_UNDEFINED:
- return "UNDEFINED";
+#define ALARM_EXEC_COMMAND_LENGTH 8192
- case RRDCALC_STATUS_CLEAR:
- return "CLEAR";
+static inline void health_alarm_execute(RRDHOST *host, ALARM_ENTRY *ae) {
+ ae->flags |= HEALTH_ENTRY_FLAG_PROCESSED;
- case RRDCALC_STATUS_RAISED:
- return "RAISED";
+ if(unlikely(ae->new_status < RRDCALC_STATUS_CLEAR)) {
+ // do not send notifications for internal statuses
+ debug(D_HEALTH, "Health not sending notification for alarm '%s.%s' status %s (internal statuses)", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+ goto done;
+ }
- case RRDCALC_STATUS_WARNING:
- return "WARNING";
+ if(unlikely(ae->new_status <= RRDCALC_STATUS_CLEAR && (ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION))) {
+ // do not send notifications for disabled statuses
+ debug(D_HEALTH, "Health not sending notification for alarm '%s.%s' status %s (it has no-clear-notification enabled)", ae->chart, ae->name, rrdcalc_status2string(ae->new_status));
+ // mark it as run, so that we will send the same alarm if it happens again
+ goto done;
+ }
- case RRDCALC_STATUS_CRITICAL:
- return "CRITICAL";
+ // find the previous notification for the same alarm
+ // which we have run the exec script
+ // exception: alarms with HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION set
+ if(likely(!(ae->flags & HEALTH_ENTRY_FLAG_NO_CLEAR_NOTIFICATION))) {
+ 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;
+ }
- default:
- return "UNKNOWN";
+ 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 inline void health_alarm_execute(ALARM_ENTRY *ae) {
- if(ae->old_status == RRDCALC_STATUS_UNINITIALIZED && ae->new_status == RRDCALC_STATUS_CLEAR)
- return;
-
- char buffer[FILENAME_MAX + 1];
+ static char command_to_run[ALARM_EXEC_COMMAND_LENGTH + 1];
pid_t command_pid;
- const char *exec = ae->exec;
- if(!exec) exec = health_default_exec;
+ const char *exec = (ae->exec) ? ae->exec : host->health_default_exec;
+ const char *recipient = (ae->recipient) ? ae->recipient : host->health_default_recipient;
- snprintfz(buffer, FILENAME_MAX, "exec %s '%s' '%s' '%s' '%s' '%0.0Lf' '%0.0Lf' '%s' '%u' '%u'",
+ 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' '%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
+ (uint32_t)ae->non_clear_duration,
+ ae->units?ae->units:"",
+ ae->info?ae->info:"",
+ ae->new_value_string,
+ ae->old_value_string
);
- debug(D_HEALTH, "executing command '%s'", buffer);
- FILE *fp = mypopen(buffer, &command_pid);
+ 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\").", buffer);
- return;
+ error("HEALTH: Cannot popen(\"%s\", \"r\").", command_to_run);
+ goto done;
}
debug(D_HEALTH, "HEALTH reading from command");
- char *s = fgets(buffer, FILENAME_MAX, fp);
+ char *s = fgets(command_to_run, FILENAME_MAX, fp);
(void)s;
- debug(D_HEALTH, "HEALTH closing command");
- mypclose(fp, command_pid);
- debug(D_HEALTH, "closed command");
+ ae->exec_code = mypclose(fp, command_pid);
+ debug(D_HEALTH, "done executing command - returned with code %d", ae->exec_code);
+
+ if(ae->exec_code != 0)
+ ae->flags |= HEALTH_ENTRY_FLAG_EXEC_FAILED;
+
+done:
+ health_alarm_log_save(host, ae);
+ return;
}
-static inline void health_process_notifications(ALARM_ENTRY *ae) {
- info("Health alarm '%s.%s' = %0.2Lf - changed status from %s to %s",
+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(ae);
+ health_alarm_execute(host, ae);
}
-static inline void health_alarm_log(time_t when,
- const char *name, const char *chart, const char *exec,
- time_t duration,
- calculated_number old_value, calculated_number new_value,
- int old_status, int new_status,
- const char *source
-) {
- 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(exec) ae->exec = strdupz(exec);
- if(source) ae->source = strdupz(source);
-
- ae->id = health_log.nextid++;
- ae->when = when;
- ae->old_value = old_value;
- ae->new_value = new_value;
- ae->old_status = old_status;
- ae->new_status = new_status;
- ae->duration = duration;
-
- if(ae->old_status == RRDCALC_STATUS_WARNING || ae->old_status == RRDCALC_STATUS_CRITICAL)
- ae->non_clear_duration += ae->duration;
-
- // link it
- ae->next = health_log.alarms;
- health_log.alarms = ae;
- health_log.count++;
+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();
- // match previous alarms
- ALARM_ENTRY *t;
- for(t = health_log.alarms ; t ; t = t->next) {
- if(t != ae &&
- t->hash_name == ae->hash_name &&
- t->hash_chart == ae->hash_chart &&
- !strcmp(t->name, ae->name) &&
- t->chart && ae->chart && !strcmp(t->chart, ae->chart)) {
-
- if(!(t->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED) && !t->updated_by) {
- t->notifications |= HEALTH_ENTRY_NOTIFICATIONS_UPDATED;
- t->updated_by = ae;
-
- if((t->new_status == RRDCALC_STATUS_WARNING || t->new_status == RRDCALC_STATUS_CRITICAL) &&
- (t->old_status == RRDCALC_STATUS_WARNING || t->old_status == RRDCALC_STATUS_CRITICAL))
- ae->non_clear_duration += t->non_clear_duration;
- }
- else {
- // no need to continue
- break;
- }
- }
- }
-}
+ netdata_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
-static inline void health_alarm_log_process(void) {
- static uint32_t last_processed = 0;
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)
+ )) {
- for(ae = health_log.alarms; ae ;ae = ae->next) {
- if(last_processed >= ae->id) break;
+ if(unlikely(ae->unique_id < first_waiting))
+ first_waiting = ae->unique_id;
- if(!(ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_PROCESSED) &&
- !(ae->notifications & HEALTH_ENTRY_NOTIFICATIONS_UPDATED)) {
- ae->notifications |= HEALTH_ENTRY_NOTIFICATIONS_PROCESSED;
- health_process_notifications(ae);
+ if(likely(now >= ae->delay_up_to_timestamp))
+ health_process_notifications(host, ae);
}
}
- if(health_log.alarms)
- last_processed = health_log.alarms->id;
+ // remember this for the next iteration
+ stop_at_id = first_waiting;
+
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
- if(health_log.count <= health_log.max)
+ if(host->health_log.count <= host->health_log.max)
return;
// cleanup excess entries in the log
+ netdata_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
+
ALARM_ENTRY *last = NULL;
- unsigned int count = health_log.max;
- for(ae = health_log.alarms; ae && count ; count--, last = ae, ae = ae->next) ;
- if(!ae || !last || last->next != ae) return;
- last->next = 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->chart);
- freez(ae->name);
- freez(ae->exec);
- freez(ae);
+ health_alarm_log_free_one_nochecks_nounlink(ae);
ae = t;
+ host->health_log.count--;
+ }
+
+ netdata_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(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;
+ }
+
+ 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) {
- (void)ptr;
+ struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
info("HEALTH thread created with task id %d", gettid());
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(health_enabled) {
+ while(!netdata_exit) {
loop++;
debug(D_HEALTH, "Health monitoring iteration no %u started", loop);
- int oldstate, runnable = 0;
- time_t now = time(NULL);
+ int oldstate, runnable = 0, apply_hibernation_delay = 0;
time_t next_run = now + min_run_every;
RRDCALC *rc;
- if (unlikely(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &oldstate) != 0))
+ // 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.");
- rrdhost_rdlock(&localhost);
+ rrd_rdlock();
- // 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)))
+ RRDHOST *host;
+ rrdhost_foreach_read(host) {
+ if(unlikely(!host->health_enabled))
continue;
- runnable++;
- rc->old_value = rc->value;
-
- // 1. if there is database lookup, do it
- // 2. if there is calculation expression, run it
+ if(unlikely(apply_hibernation_delay)) {
- if (unlikely(RRDCALC_HAS_DB_LOOKUP(rc))) {
- time_t old_db_timestamp = rc->db_timestamp;
- int value_is_null = 0;
+ 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)
+ );
- int ret = rrd2value(rc->rrdset, wb, &rc->value,
- rc->dimensions, 1, rc->after, rc->before, rc->group,
- rc->options, &rc->db_timestamp, &value_is_null);
+ host->health_delay_up_to = now + hibernation_delay;
+ }
- if (unlikely(ret != 200)) {
- // database lookup failed
- rc->value = NAN;
+ if(unlikely(!host->health_enabled || now < host->health_delay_up_to))
+ continue;
- debug(D_HEALTH, "Health alarm '%s.%s': database lookup returned error %d", rc->chart?rc->chart:"NOCHART", rc->name, ret);
+ rrdhost_rdlock(host);
- if (unlikely(!(rc->rrdcalc_options & RRDCALC_OPTION_DB_ERROR))) {
- rc->rrdcalc_options |= RRDCALC_OPTION_DB_ERROR;
- error("Health alarm '%s.%s': database lookup returned error %d", rc->chart?rc->chart:"NOCHART", rc->name, ret);
- }
+ // the first loop is to lookup values from the db
+ for(rc = host->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;
}
- else if (unlikely(rc->rrdcalc_options & RRDCALC_OPTION_DB_ERROR))
- rc->rrdcalc_options &= ~RRDCALC_OPTION_DB_ERROR;
- if (unlikely(old_db_timestamp == rc->db_timestamp)) {
- // database is stale
-
- debug(D_HEALTH, "Health alarm '%s.%s': database is stale", rc->chart?rc->chart:"NOCHART", rc->name);
+ runnable++;
+ rc->old_value = rc->value;
+ rc->rrdcalc_flags |= RRDCALC_FLAG_RUNNABLE;
+
+ // ------------------------------------------------------------
+ // 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 = 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(!(rc->rrdcalc_options & RRDCALC_OPTION_DB_STALE))) {
- rc->rrdcalc_options |= RRDCALC_OPTION_DB_STALE;
- error("Health alarm '%s.%s': database is stale", rc->chart?rc->chart:"NOCHART", rc->name);
+ if(unlikely(ret != 200)) {
+ // database lookup failed
+ rc->value = NAN;
+ 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_options & RRDCALC_OPTION_DB_STALE))
- rc->rrdcalc_options &= ~RRDCALC_OPTION_DB_STALE;
+ else
+ rc->rrdcalc_flags &= ~RRDCALC_FLAG_DB_ERROR;
- if (unlikely(value_is_null)) {
- // collected value is null
+ /* - RRDCALC_FLAG_DB_STALE not currently used
+ if (unlikely(old_db_timestamp == rc->db_before)) {
+ // database is stale
- rc->value = NAN;
+ debug(D_HEALTH, "Health on host '%s', alarm '%s.%s': database is stale", host->hostname, rc->chart?rc->chart:"NOCHART", rc->name);
- 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_options & RRDCALC_OPTION_DB_NAN))) {
- rc->rrdcalc_options |= RRDCALC_OPTION_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);
+ if (unlikely(!(rc->rrdcalc_flags & RRDCALC_FLAG_DB_STALE))) {
+ rc->rrdcalc_flags |= RRDCALC_FLAG_DB_STALE;
+ error("Health on host '%s', alarm '%s.%s': database is stale", host->hostname, 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;
+ 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
+ );
+ }
+ 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
+ );
}
- else if (unlikely(rc->rrdcalc_options & RRDCALC_OPTION_DB_NAN))
- rc->rrdcalc_options &= ~RRDCALC_OPTION_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;
+ // ------------------------------------------------------------
+ // if there is calculation expression, run it
- debug(D_HEALTH, "Health alarm '%s.%s': failed to evaluate calculation with error: %s",
- rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->calculation->error_msg));
-
- if (unlikely(!(rc->rrdcalc_options & RRDCALC_OPTION_CALC_ERROR))) {
- rc->rrdcalc_options |= RRDCALC_OPTION_CALC_ERROR;
- error("Health alarm '%s.%s': failed to evaluate calculation with error: %s",
- rc->chart?rc->chart:"NOCHART", rc->name, buffer_tostring(rc->calculation->error_msg));
+ if(unlikely(rc->calculation)) {
+ if(unlikely(!expression_evaluate(rc->calculation))) {
+ // calculation failed
+ rc->value = NAN;
+ 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_options & RRDCALC_OPTION_CALC_ERROR))
- rc->rrdcalc_options &= ~RRDCALC_OPTION_CALC_ERROR;
-
- debug(D_HEALTH, "Health alarm '%s.%s': calculation expression gave value "
- CALCULATED_NUMBER_FORMAT
- ": %s (source: %s)",
- rc->chart?rc->chart:"NOCHART", rc->name,
- rc->calculation->result,
- buffer_tostring(rc->calculation->error_msg),
- rc->source
- );
+ else {
+ 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;
+ rc->value = rc->calculation->result;
+ }
}
}
- }
- rrdhost_unlock(&localhost);
+ rrdhost_unlock(host);
- if (runnable) {
- rrdhost_rdlock(&localhost);
+ if(unlikely(runnable && !netdata_exit)) {
+ rrdhost_rdlock(host);
- for (rc = localhost.alarms; rc; rc = rc->next) {
- if (unlikely(!rrdcalc_isrunnable(rc, now, &next_run)))
- continue;
+ for(rc = host->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;
+ int warning_status = RRDCALC_STATUS_UNDEFINED;
+ int critical_status = RRDCALC_STATUS_UNDEFINED;
- if(unlikely(rc->warning)) {
- if(unlikely(!expression_evaluate(rc->warning))) {
- // calculation failed
+ // --------------------------------------------------------
+ // check the warning expression
- 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(likely(rc->warning)) {
+ if(unlikely(!expression_evaluate(rc->warning))) {
+ // calculation failed
+ rc->rrdcalc_flags |= RRDCALC_FLAG_WARN_ERROR;
- if (unlikely(!(rc->rrdcalc_options & RRDCALC_OPTION_WARN_ERROR))) {
- rc->rrdcalc_options |= RRDCALC_OPTION_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));
+ 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 {
+ 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);
}
}
- else {
- if(unlikely(rc->rrdcalc_options & RRDCALC_OPTION_WARN_ERROR))
- rc->rrdcalc_options &= ~RRDCALC_OPTION_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);
+ // --------------------------------------------------------
+ // check the critical expression
+
+ if(likely(rc->critical)) {
+ if(unlikely(!expression_evaluate(rc->critical))) {
+ // calculation failed
+ 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 {
+ 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);
+ }
}
- }
- if(unlikely(rc->critical)) {
- if(unlikely(!expression_evaluate(rc->critical))) {
- // calculation failed
+ // --------------------------------------------------------
+ // decide the final alarm status
- 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));
+ int status = RRDCALC_STATUS_UNDEFINED;
- if (unlikely(!(rc->rrdcalc_options & RRDCALC_OPTION_CRIT_ERROR))) {
- rc->rrdcalc_options |= RRDCALC_OPTION_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));
- }
+ switch(warning_status) {
+ case RRDCALC_STATUS_CLEAR:
+ status = RRDCALC_STATUS_CLEAR;
+ break;
+
+ case RRDCALC_STATUS_RAISED:
+ status = RRDCALC_STATUS_WARNING;
+ break;
+
+ default:
+ break;
}
- else {
- if(unlikely(rc->rrdcalc_options & RRDCALC_OPTION_CRIT_ERROR))
- rc->rrdcalc_options &= ~RRDCALC_OPTION_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);
+ 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;
}
- }
- int status = RRDCALC_STATUS_UNDEFINED;
+ // --------------------------------------------------------
+ // check if the new status and the old differ
- switch(warning_status) {
- case RRDCALC_STATUS_CLEAR:
- status = RRDCALC_STATUS_CLEAR;
- break;
+ if(status != rc->status) {
+ int delay = 0;
- case RRDCALC_STATUS_RAISED:
- status = RRDCALC_STATUS_WARNING;
- break;
+ // apply trigger hysteresis
- default:
- break;
- }
+ 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;
+ }
- switch(critical_status) {
- case RRDCALC_STATUS_CLEAR:
- if(status == RRDCALC_STATUS_UNDEFINED)
- status = RRDCALC_STATUS_CLEAR;
- break;
+ 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;
+
+ // 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
+ );
- case RRDCALC_STATUS_RAISED:
- status = RRDCALC_STATUS_CRITICAL;
- break;
+ rc->last_status_change = now;
+ rc->status = status;
+ }
- default:
- break;
- }
+ rc->last_updated = now;
+ rc->next_update = now + rc->update_every;
- if(status != rc->status) {
- health_alarm_log(time(NULL), rc->name, rc->rrdset->id, rc->exec, now - rc->last_status_change, rc->old_value, rc->value, rc->status, status, rc->source);
- rc->last_status_change = now;
- rc->status = status;
+ if(next_run > rc->next_update)
+ next_run = rc->next_update;
}
- rc->last_updated = now;
- rc->next_update = now + rc->update_every;
-
- if (next_run > rc->next_update)
- next_run = rc->next_update;
+ rrdhost_unlock(host);
}
- rrdhost_unlock(&localhost);
- }
+ if(unlikely(netdata_exit))
+ break;
+
+ // execute notifications
+ // and cleanup
+ health_alarm_log_process(host);
+
+ if(unlikely(netdata_exit))
+ break;
+
+ } /* rrdhost_foreach */
+
+ rrd_unlock();
- if (unlikely(pthread_setcancelstate(oldstate, NULL) != 0))
+ if(unlikely(pthread_setcancelstate(oldstate, NULL) != 0))
error("Cannot set pthread cancel state to RESTORE (%d).", oldstate);
- // execute notifications
- // and cleanup
- health_alarm_log_process();
+ if(unlikely(netdata_exit))
+ break;
- now = time(NULL);
+ 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(1000000 * (unsigned long long) (next_run - now));
+ 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 {
+ else
debug(D_HEALTH, "Health monitoring iteration no %u done. Next iteration now", loop);
- }
- }
+
+ now_boottime = now_boottime_sec();
+
+ } // forever
buffer_free(wb);
info("HEALTH thread exiting");
+
+ static_thread->enabled = 0;
pthread_exit(NULL);
return NULL;
}
projects / netdata.git / blobdiff