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