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-rw-r--r--health/health_log.c583
1 files changed, 583 insertions, 0 deletions
diff --git a/health/health_log.c b/health/health_log.c
new file mode 100644
index 0000000..8105e01
--- /dev/null
+++ b/health/health_log.c
@@ -0,0 +1,583 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "health.h"
+
+// ----------------------------------------------------------------------------
+// health alarm log load/save
+// no need for locking - only one thread is reading / writing the alarms log
+
+inline int health_alarm_log_open(RRDHOST *host) {
+ if(host->health_log_fp)
+ fclose(host->health_log_fp);
+
+ host->health_log_fp = fopen(host->health_log_filename, "a");
+
+ if(host->health_log_fp) {
+ if (setvbuf(host->health_log_fp, NULL, _IOLBF, 0) != 0)
+ error("HEALTH [%s]: cannot set line buffering on health log file '%s'.", rrdhost_hostname(host), host->health_log_filename);
+ return 0;
+ }
+
+ error("HEALTH [%s]: cannot open health log file '%s'. Health data will be lost in case of netdata or server crash.", rrdhost_hostname(host), host->health_log_filename);
+ return -1;
+}
+
+static inline void health_alarm_log_close(RRDHOST *host) {
+ if(host->health_log_fp) {
+ fclose(host->health_log_fp);
+ host->health_log_fp = NULL;
+ }
+}
+
+static inline void health_log_rotate(RRDHOST *host) {
+ static size_t rotate_every = 0;
+
+ if(unlikely(rotate_every == 0)) {
+ rotate_every = (size_t)config_get_number(CONFIG_SECTION_HEALTH, "rotate log every lines", 2000);
+ if(rotate_every < 100) rotate_every = 100;
+ }
+
+ if(unlikely(host->health_log_entries_written > rotate_every)) {
+ if(unlikely(host->health_log_fp)) {
+ health_alarm_log_close(host);
+
+ char old_filename[FILENAME_MAX + 1];
+ snprintfz(old_filename, FILENAME_MAX, "%s.old", host->health_log_filename);
+
+ if(unlink(old_filename) == -1 && errno != ENOENT)
+ error("HEALTH [%s]: cannot remove old alarms log file '%s'", rrdhost_hostname(host), old_filename);
+
+ if(link(host->health_log_filename, old_filename) == -1 && errno != ENOENT)
+ error("HEALTH [%s]: cannot move file '%s' to '%s'.", rrdhost_hostname(host), host->health_log_filename, old_filename);
+
+ if(unlink(host->health_log_filename) == -1 && errno != ENOENT)
+ error("HEALTH [%s]: cannot remove old alarms log file '%s'", rrdhost_hostname(host), host->health_log_filename);
+
+ // open it with truncate
+ host->health_log_fp = fopen(host->health_log_filename, "w");
+
+ if(host->health_log_fp)
+ fclose(host->health_log_fp);
+ else
+ error("HEALTH [%s]: cannot truncate health log '%s'", rrdhost_hostname(host), host->health_log_filename);
+
+ host->health_log_fp = NULL;
+
+ host->health_log_entries_written = 0;
+ health_alarm_log_open(host);
+ }
+ }
+}
+
+inline void health_label_log_save(RRDHOST *host) {
+ health_log_rotate(host);
+
+ if(unlikely(host->health_log_fp)) {
+ BUFFER *wb = buffer_create(1024);
+
+ rrdlabels_to_buffer(localhost->rrdlabels, wb, "", "=", "", "\t ", NULL, NULL, NULL, NULL);
+ char *write = (char *) buffer_tostring(wb);
+
+ if (unlikely(fprintf(host->health_log_fp, "L\t%s", write) < 0))
+ error("HEALTH [%s]: failed to save alarm log entry to '%s'. Health data may be lost in case of abnormal restart.",
+ rrdhost_hostname(host), host->health_log_filename);
+ else
+ host->health_log_entries_written++;
+
+ buffer_free(wb);
+ }
+}
+
+inline void health_alarm_log_save(RRDHOST *host, ALARM_ENTRY *ae) {
+ health_log_rotate(host);
+ if(unlikely(host->health_log_fp)) {
+ if(unlikely(fprintf(host->health_log_fp
+ , "%c\t%s"
+ "\t%08x\t%08x\t%08x\t%08x\t%08x"
+ "\t%08x\t%08x\t%08x"
+ "\t%08x\t%08x\t%08x"
+ "\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s"
+ "\t%d\t%d\t%d\t%d"
+ "\t" NETDATA_DOUBLE_FORMAT_AUTO "\t" NETDATA_DOUBLE_FORMAT_AUTO
+ "\t%016"PRIx64""
+ "\t%s\t%s\t%s"
+ "\n"
+ , (ae->flags & HEALTH_ENTRY_FLAG_SAVED)?'U':'A'
+ , rrdhost_hostname(host)
+
+ , ae->unique_id
+ , ae->alarm_id
+ , ae->alarm_event_id
+ , ae->updated_by_id
+ , ae->updates_id
+
+ , (uint32_t)ae->when
+ , (uint32_t)ae->duration
+ , (uint32_t)ae->non_clear_duration
+ , (uint32_t)ae->flags
+ , (uint32_t)ae->exec_run_timestamp
+ , (uint32_t)ae->delay_up_to_timestamp
+
+ , ae_name(ae)
+ , ae_chart_name(ae)
+ , ae_family(ae)
+ , ae_exec(ae)
+ , ae_recipient(ae)
+ , ae_source(ae)
+ , ae_units(ae)
+ , ae_info(ae)
+
+ , ae->exec_code
+ , ae->new_status
+ , ae->old_status
+ , ae->delay
+
+ , ae->new_value
+ , ae->old_value
+ , (uint64_t)ae->last_repeat
+ , (ae->classification)?ae_classification(ae):"Unknown"
+ , (ae->component)?ae_component(ae):"Unknown"
+ , (ae->type)?ae_type(ae):"Unknown"
+ ) < 0))
+ error("HEALTH [%s]: failed to save alarm log entry to '%s'. Health data may be lost in case of abnormal restart.", rrdhost_hostname(host), host->health_log_filename);
+ else {
+ ae->flags |= HEALTH_ENTRY_FLAG_SAVED;
+ host->health_log_entries_written++;
+ }
+ }else
+ sql_health_alarm_log_save(host, ae);
+
+#ifdef ENABLE_ACLK
+ if (netdata_cloud_setting) {
+ sql_queue_alarm_to_aclk(host, ae, 0);
+ }
+#endif
+}
+
+static uint32_t is_valid_alarm_id(RRDHOST *host, const char *chart, const char *name, uint32_t alarm_id)
+{
+ STRING *chart_string = string_strdupz(chart);
+ STRING *name_string = string_strdupz(name);
+
+ uint32_t ret = 1;
+
+ ALARM_ENTRY *ae;
+ for(ae = host->health_log.alarms; ae ;ae = ae->next) {
+ if (unlikely(ae->alarm_id == alarm_id && (!(chart_string == ae->chart && name_string == ae->name)))) {
+ ret = 0;
+ break;
+ }
+ }
+
+ string_freez(chart_string);
+ string_freez(name_string);
+
+ return ret;
+}
+
+static inline ssize_t health_alarm_log_read(RRDHOST *host, FILE *fp, const char *filename) {
+ errno = 0;
+
+ char *s, *buf = mallocz(65536 + 1);
+ size_t line = 0, len = 0;
+ ssize_t loaded = 0, updated = 0, errored = 0, duplicate = 0;
+
+ DICTIONARY *all_rrdcalcs = dictionary_create(
+ DICT_OPTION_NAME_LINK_DONT_CLONE | DICT_OPTION_VALUE_LINK_DONT_CLONE | DICT_OPTION_DONT_OVERWRITE_VALUE);
+ RRDCALC *rc;
+ foreach_rrdcalc_in_rrdhost_read(host, rc) {
+ dictionary_set(all_rrdcalcs, rrdcalc_name(rc), rc, sizeof(*rc));
+ }
+ foreach_rrdcalc_in_rrdhost_done(rc);
+
+ netdata_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
+
+ while((s = fgets_trim_len(buf, 65536, fp, &len))) {
+ host->health_log_entries_written++;
+ line++;
+
+ int max_entries = 33, entries = 0;
+ char *pointers[max_entries];
+
+ pointers[entries++] = s++;
+ while(*s) {
+ if(unlikely(*s == '\t')) {
+ *s = '\0';
+ pointers[entries++] = ++s;
+ if(entries >= max_entries) {
+ error("HEALTH [%s]: line %zu of file '%s' has more than %d entries. Ignoring excessive entries.", rrdhost_hostname(host), line, filename, max_entries);
+ break;
+ }
+ }
+ else s++;
+ }
+
+ if(likely(*pointers[0] == 'L'))
+ continue;
+
+ if(likely(*pointers[0] == 'U' || *pointers[0] == 'A')) {
+ ALARM_ENTRY *ae = NULL;
+
+ if(entries < 27) {
+ error("HEALTH [%s]: line %zu of file '%s' should have at least 27 entries, but it has %d. Ignoring it.", rrdhost_hostname(host), line, filename, entries);
+ errored++;
+ continue;
+ }
+
+ // check that we have valid ids
+ uint32_t unique_id = (uint32_t)strtoul(pointers[2], NULL, 16);
+ if(!unique_id) {
+ error("HEALTH [%s]: line %zu of file '%s' states alarm entry with invalid unique id %u (%s). Ignoring it.", rrdhost_hostname(host), line, filename, unique_id, pointers[2]);
+ errored++;
+ continue;
+ }
+
+ uint32_t alarm_id = (uint32_t)strtoul(pointers[3], NULL, 16);
+ if(!alarm_id) {
+ error("HEALTH [%s]: line %zu of file '%s' states alarm entry for invalid alarm id %u (%s). Ignoring it.", rrdhost_hostname(host), line, filename, alarm_id, pointers[3]);
+ errored++;
+ continue;
+ }
+
+ // Check if we got last_repeat field
+ time_t last_repeat = 0;
+ if(entries > 27) {
+ char* alarm_name = pointers[13];
+ last_repeat = (time_t)strtoul(pointers[27], NULL, 16);
+
+ rc = dictionary_get(all_rrdcalcs, alarm_name);
+ if(unlikely(rc)) {
+ if (rrdcalc_isrepeating(rc)) {
+ rc->last_repeat = last_repeat;
+ // We iterate through repeating alarm entries only to
+ // find the latest last_repeat timestamp. Otherwise,
+ // there is no need to keep them in memory.
+ continue;
+ }
+ }
+ }
+
+ if(unlikely(*pointers[0] == 'A')) {
+ // make sure it is properly numbered
+ if(unlikely(host->health_log.alarms && unique_id < host->health_log.alarms->unique_id)) {
+ error( "HEALTH [%s]: line %zu of file '%s' has alarm log entry %u in wrong order. Ignoring it."
+ , rrdhost_hostname(host), line, filename, unique_id);
+ errored++;
+ continue;
+ }
+
+ ae = callocz(1, sizeof(ALARM_ENTRY));
+ }
+ else if(unlikely(*pointers[0] == 'U')) {
+ // find the original
+ for(ae = host->health_log.alarms; ae ; ae = ae->next) {
+ if(unlikely(unique_id == ae->unique_id)) {
+ if(unlikely(*pointers[0] == 'A')) {
+ error("HEALTH [%s]: line %zu of file '%s' adds duplicate alarm log entry %u. Using the later."
+ , rrdhost_hostname(host), line, filename, unique_id);
+ *pointers[0] = 'U';
+ duplicate++;
+ }
+ break;
+ }
+ else if(unlikely(unique_id > ae->unique_id)) {
+ // no need to continue
+ // the linked list is sorted
+ ae = NULL;
+ break;
+ }
+ }
+ }
+
+ // if not found, skip this line
+ if(unlikely(!ae)) {
+ // error("HEALTH [%s]: line %zu of file '%s' updates alarm log entry with unique id %u, but it is not found.", host->hostname, line, filename, unique_id);
+ continue;
+ }
+
+ // check for a possible host mismatch
+ //if(strcmp(pointers[1], host->hostname))
+ // error("HEALTH [%s]: line %zu of file '%s' provides an alarm for host '%s' but this is named '%s'.", host->hostname, line, filename, pointers[1], host->hostname);
+
+ ae->unique_id = unique_id;
+ if (!is_valid_alarm_id(host, pointers[14], pointers[13], alarm_id)) {
+ STRING *chart = string_strdupz(pointers[14]);
+ STRING *name = string_strdupz(pointers[13]);
+ alarm_id = rrdcalc_get_unique_id(host, chart, name, NULL);
+ string_freez(chart);
+ string_freez(name);
+ }
+ ae->alarm_id = alarm_id;
+ ae->alarm_event_id = (uint32_t)strtoul(pointers[4], NULL, 16);
+ ae->updated_by_id = (uint32_t)strtoul(pointers[5], NULL, 16);
+ ae->updates_id = (uint32_t)strtoul(pointers[6], NULL, 16);
+
+ ae->when = (uint32_t)strtoul(pointers[7], NULL, 16);
+ ae->duration = (uint32_t)strtoul(pointers[8], NULL, 16);
+ ae->non_clear_duration = (uint32_t)strtoul(pointers[9], NULL, 16);
+
+ ae->flags = (uint32_t)strtoul(pointers[10], NULL, 16);
+ ae->flags |= HEALTH_ENTRY_FLAG_SAVED;
+
+ ae->exec_run_timestamp = (uint32_t)strtoul(pointers[11], NULL, 16);
+ ae->delay_up_to_timestamp = (uint32_t)strtoul(pointers[12], NULL, 16);
+
+ string_freez(ae->name);
+ ae->name = string_strdupz(pointers[13]);
+
+ string_freez(ae->chart);
+ ae->chart = string_strdupz(pointers[14]);
+
+ string_freez(ae->family);
+ ae->family = string_strdupz(pointers[15]);
+
+ string_freez(ae->exec);
+ ae->exec = string_strdupz(pointers[16]);
+
+ string_freez(ae->recipient);
+ ae->recipient = string_strdupz(pointers[17]);
+
+ string_freez(ae->source);
+ ae->source = string_strdupz(pointers[18]);
+
+ string_freez(ae->units);
+ ae->units = string_strdupz(pointers[19]);
+
+ string_freez(ae->info);
+ ae->info = string_strdupz(pointers[20]);
+
+ ae->exec_code = str2i(pointers[21]);
+ ae->new_status = str2i(pointers[22]);
+ ae->old_status = str2i(pointers[23]);
+ ae->delay = str2i(pointers[24]);
+
+ ae->new_value = str2l(pointers[25]);
+ ae->old_value = str2l(pointers[26]);
+
+ ae->last_repeat = last_repeat;
+
+ if (likely(entries > 30)) {
+ string_freez(ae->classification);
+ ae->classification = string_strdupz(pointers[28]);
+
+ string_freez(ae->component);
+ ae->component = string_strdupz(pointers[29]);
+
+ string_freez(ae->type);
+ ae->type = string_strdupz(pointers[30]);
+ }
+
+ char value_string[100 + 1];
+ string_freez(ae->old_value_string);
+ string_freez(ae->new_value_string);
+ ae->old_value_string = string_strdupz(format_value_and_unit(value_string, 100, ae->old_value, ae_units(ae), -1));
+ ae->new_value_string = string_strdupz(format_value_and_unit(value_string, 100, ae->new_value, ae_units(ae), -1));
+
+ // add it to host if not already there
+ if(unlikely(*pointers[0] == 'A')) {
+ ae->next = host->health_log.alarms;
+ host->health_log.alarms = ae;
+ sql_health_alarm_log_insert(host, ae);
+ loaded++;
+ }
+ else {
+ sql_health_alarm_log_update(host, ae);
+ updated++;
+ }
+
+ if(unlikely(ae->unique_id > host->health_max_unique_id))
+ host->health_max_unique_id = ae->unique_id;
+
+ if(unlikely(ae->alarm_id >= host->health_max_alarm_id))
+ host->health_max_alarm_id = ae->alarm_id;
+ }
+ else {
+ error("HEALTH [%s]: line %zu of file '%s' is invalid (unrecognized entry type '%s').", rrdhost_hostname(host), line, filename, pointers[0]);
+ errored++;
+ }
+ }
+
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+
+ dictionary_destroy(all_rrdcalcs);
+ all_rrdcalcs = NULL;
+
+ freez(buf);
+
+ if(!host->health_max_unique_id) host->health_max_unique_id = (uint32_t)now_realtime_sec();
+ if(!host->health_max_alarm_id) host->health_max_alarm_id = (uint32_t)now_realtime_sec();
+
+ host->health_log.next_log_id = host->health_max_unique_id + 1;
+ if (unlikely(!host->health_log.next_alarm_id || host->health_log.next_alarm_id <= host->health_max_alarm_id))
+ host->health_log.next_alarm_id = host->health_max_alarm_id + 1;
+
+ debug(D_HEALTH, "HEALTH [%s]: loaded file '%s' with %zd new alarm entries, updated %zd alarms, errors %zd entries, duplicate %zd", rrdhost_hostname(host), filename, loaded, updated, errored, duplicate);
+ return loaded;
+}
+
+inline void health_alarm_log_load(RRDHOST *host) {
+ health_alarm_log_close(host);
+
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s.old", host->health_log_filename);
+ FILE *fp = fopen(filename, "r");
+ if(!fp)
+ error("HEALTH [%s]: cannot open health file: %s", rrdhost_hostname(host), filename);
+ else {
+ health_alarm_log_read(host, fp, filename);
+ fclose(fp);
+ }
+
+ host->health_log_entries_written = 0;
+ fp = fopen(host->health_log_filename, "r");
+ if(!fp)
+ error("HEALTH [%s]: cannot open health file: %s", rrdhost_hostname(host), host->health_log_filename);
+ else {
+ health_alarm_log_read(host, fp, host->health_log_filename);
+ fclose(fp);
+ }
+}
+
+
+// ----------------------------------------------------------------------------
+// health alarm log management
+
+inline ALARM_ENTRY* health_create_alarm_entry(
+ RRDHOST *host,
+ uint32_t alarm_id,
+ uint32_t alarm_event_id,
+ const uuid_t config_hash_id,
+ time_t when,
+ STRING *name,
+ STRING *chart,
+ STRING *chart_context,
+ STRING *family,
+ STRING *class,
+ STRING *component,
+ STRING *type,
+ STRING *exec,
+ STRING *recipient,
+ time_t duration,
+ NETDATA_DOUBLE old_value,
+ NETDATA_DOUBLE new_value,
+ RRDCALC_STATUS old_status,
+ RRDCALC_STATUS new_status,
+ STRING *source,
+ STRING *units,
+ STRING *info,
+ int delay,
+ uint32_t flags
+) {
+ debug(D_HEALTH, "Health adding alarm log entry with id: %u", host->health_log.next_log_id);
+
+ ALARM_ENTRY *ae = callocz(1, sizeof(ALARM_ENTRY));
+ ae->name = string_dup(name);
+ ae->chart = string_dup(chart);
+ ae->chart_context = string_dup(chart_context);
+
+ uuid_copy(ae->config_hash_id, *((uuid_t *) config_hash_id));
+
+ ae->family = string_dup(family);
+ ae->classification = string_dup(class);
+ ae->component = string_dup(component);
+ ae->type = string_dup(type);
+ ae->exec = string_dup(exec);
+ ae->recipient = string_dup(recipient);
+ ae->source = string_dup(source);
+ ae->units = string_dup(units);
+
+ ae->unique_id = host->health_log.next_log_id++;
+ ae->alarm_id = alarm_id;
+ ae->alarm_event_id = alarm_event_id;
+ ae->when = when;
+ ae->old_value = old_value;
+ ae->new_value = new_value;
+
+ char value_string[100 + 1];
+ ae->old_value_string = string_strdupz(format_value_and_unit(value_string, 100, ae->old_value, ae_units(ae), -1));
+ ae->new_value_string = string_strdupz(format_value_and_unit(value_string, 100, ae->new_value, ae_units(ae), -1));
+
+ ae->info = string_dup(info);
+ ae->old_status = old_status;
+ ae->new_status = new_status;
+ ae->duration = duration;
+ ae->delay = delay;
+ ae->delay_up_to_timestamp = when + delay;
+ ae->flags |= flags;
+
+ ae->last_repeat = 0;
+
+ if(ae->old_status == RRDCALC_STATUS_WARNING || ae->old_status == RRDCALC_STATUS_CRITICAL)
+ ae->non_clear_duration += ae->duration;
+
+ return ae;
+}
+
+inline void health_alarm_log_add_entry(
+ RRDHOST *host,
+ ALARM_ENTRY *ae
+) {
+ debug(D_HEALTH, "Health adding alarm log entry with id: %u", ae->unique_id);
+
+ // link it
+ netdata_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
+ ae->next = host->health_log.alarms;
+ host->health_log.alarms = ae;
+ host->health_log.count++;
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+
+ // match previous alarms
+ netdata_rwlock_rdlock(&host->health_log.alarm_log_rwlock);
+ ALARM_ENTRY *t;
+ for(t = host->health_log.alarms ; t ; t = t->next) {
+ if(t != ae && t->alarm_id == ae->alarm_id) {
+ if(!(t->flags & HEALTH_ENTRY_FLAG_UPDATED) && !t->updated_by_id) {
+ t->flags |= HEALTH_ENTRY_FLAG_UPDATED;
+ t->updated_by_id = ae->unique_id;
+ ae->updates_id = t->unique_id;
+
+ if((t->new_status == RRDCALC_STATUS_WARNING || t->new_status == RRDCALC_STATUS_CRITICAL) &&
+ (t->old_status == RRDCALC_STATUS_WARNING || t->old_status == RRDCALC_STATUS_CRITICAL))
+ ae->non_clear_duration += t->non_clear_duration;
+
+ health_alarm_log_save(host, t);
+ }
+
+ // no need to continue
+ break;
+ }
+ }
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+
+ health_alarm_log_save(host, ae);
+}
+
+inline void health_alarm_log_free_one_nochecks_nounlink(ALARM_ENTRY *ae) {
+ string_freez(ae->name);
+ string_freez(ae->chart);
+ string_freez(ae->chart_context);
+ string_freez(ae->family);
+ string_freez(ae->classification);
+ string_freez(ae->component);
+ string_freez(ae->type);
+ string_freez(ae->exec);
+ string_freez(ae->recipient);
+ string_freez(ae->source);
+ string_freez(ae->units);
+ string_freez(ae->info);
+ string_freez(ae->old_value_string);
+ string_freez(ae->new_value_string);
+ freez(ae);
+}
+
+inline void health_alarm_log_free(RRDHOST *host) {
+ netdata_rwlock_wrlock(&host->health_log.alarm_log_rwlock);
+
+ ALARM_ENTRY *ae;
+ while((ae = host->health_log.alarms)) {
+ host->health_log.alarms = ae->next;
+ health_alarm_log_free_one_nochecks_nounlink(ae);
+ }
+
+ netdata_rwlock_unlock(&host->health_log.alarm_log_rwlock);
+}