diff options
Diffstat (limited to 'daemon/service.c')
| -rw-r--r-- | daemon/service.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/daemon/service.c b/daemon/service.c new file mode 100644 index 0000000..6db2ef6 --- /dev/null +++ b/daemon/service.c @@ -0,0 +1,297 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "common.h" + +/* Run service jobs every X seconds */ +#define SERVICE_HEARTBEAT 10 + +#define TIME_TO_RUN_OBSOLETIONS_ON_CHILD_CONNECT (3600 / 2) +#define ITERATIONS_TO_RUN_OBSOLETIONS_ON_CHILD_CONNECT 60 + +#define WORKER_JOB_CHILD_CHART_OBSOLETION_CHECK 1 +#define WORKER_JOB_CLEANUP_OBSOLETE_CHARTS 2 +#define WORKER_JOB_ARCHIVE_CHART 3 +#define WORKER_JOB_ARCHIVE_CHART_DIMENSIONS 4 +#define WORKER_JOB_ARCHIVE_DIMENSION 5 +#define WORKER_JOB_CLEANUP_ORPHAN_HOSTS 6 +#define WORKER_JOB_CLEANUP_OBSOLETE_CHARTS_ON_HOSTS 7 +#define WORKER_JOB_FREE_HOST 9 +#define WORKER_JOB_SAVE_HOST_CHARTS 10 +#define WORKER_JOB_DELETE_HOST_CHARTS 11 +#define WORKER_JOB_FREE_CHART 12 +#define WORKER_JOB_SAVE_CHART 13 +#define WORKER_JOB_DELETE_CHART 14 +#define WORKER_JOB_FREE_DIMENSION 15 + +static void svc_rrddim_obsolete_to_archive(RRDDIM *rd) { + RRDSET *st = rd->rrdset; + + if(rrddim_flag_check(rd, RRDDIM_FLAG_ARCHIVED) || !rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE)) + return; + + worker_is_busy(WORKER_JOB_ARCHIVE_DIMENSION); + + rrddim_flag_set(rd, RRDDIM_FLAG_ARCHIVED); + rrddim_flag_clear(rd, RRDDIM_FLAG_OBSOLETE); + + const char *cache_filename = rrddim_cache_filename(rd); + if(cache_filename) { + info("Deleting dimension file '%s'.", cache_filename); + if (unlikely(unlink(cache_filename) == -1)) + error("Cannot delete dimension file '%s'", cache_filename); + } + + if (rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) { + rrddimvar_delete_all(rd); + + /* only a collector can mark a chart as obsolete, so we must remove the reference */ + + size_t tiers_available = 0, tiers_said_no_retention = 0; + for(size_t tier = 0; tier < storage_tiers ;tier++) { + if(rd->tiers[tier]) { + tiers_available++; + + if(rd->tiers[tier]->collect_ops->finalize(rd->tiers[tier]->db_collection_handle)) + tiers_said_no_retention++; + + rd->tiers[tier]->db_collection_handle = NULL; + } + } + + if (tiers_available == tiers_said_no_retention && tiers_said_no_retention) { + /* This metric has no data and no references */ + metaqueue_delete_dimension_uuid(&rd->metric_uuid); + } + else { + /* Do not delete this dimension */ + return; + } + } + + worker_is_busy(WORKER_JOB_FREE_DIMENSION); + rrddim_free(st, rd); +} + +static bool svc_rrdset_archive_obsolete_dimensions(RRDSET *st, bool all_dimensions) { + worker_is_busy(WORKER_JOB_ARCHIVE_CHART_DIMENSIONS); + + RRDDIM *rd; + time_t now = now_realtime_sec(); + + bool done_all_dimensions = true; + + dfe_start_write(st->rrddim_root_index, rd) { + if(unlikely( + all_dimensions || + (rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE) && (rd->last_collected_time.tv_sec + rrdset_free_obsolete_time < now)) + )) { + + if(dictionary_acquired_item_references(rd_dfe.item) == 1) { + info("Removing obsolete dimension '%s' (%s) of '%s' (%s).", rrddim_name(rd), rrddim_id(rd), rrdset_name(st), rrdset_id(st)); + svc_rrddim_obsolete_to_archive(rd); + } + else + done_all_dimensions = false; + } + else + done_all_dimensions = false; + } + dfe_done(rd); + + return done_all_dimensions; +} + +static void svc_rrdset_obsolete_to_archive(RRDSET *st) { + worker_is_busy(WORKER_JOB_ARCHIVE_CHART); + + if(!svc_rrdset_archive_obsolete_dimensions(st, true)) + return; + + rrdset_flag_set(st, RRDSET_FLAG_ARCHIVED); + rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE); + + rrdcalc_unlink_all_rrdset_alerts(st); + + rrdsetvar_release_and_delete_all(st); + + // has to be run after all dimensions are archived - or use-after-free will occur + rrdvar_delete_all(st->rrdvars); + + if(st->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE) { + if(rrdhost_option_check(st->rrdhost, RRDHOST_OPTION_DELETE_OBSOLETE_CHARTS)) { + worker_is_busy(WORKER_JOB_DELETE_CHART); + rrdset_delete_files(st); + } + else { + worker_is_busy(WORKER_JOB_SAVE_CHART); + rrdset_save(st); + } + + worker_is_busy(WORKER_JOB_FREE_CHART); + rrdset_free(st); + } +} + +static void svc_rrdhost_cleanup_obsolete_charts(RRDHOST *host) { + worker_is_busy(WORKER_JOB_CLEANUP_OBSOLETE_CHARTS); + + time_t now = now_realtime_sec(); + RRDSET *st; + rrdset_foreach_reentrant(st, host) { + if(rrdset_is_replicating(st)) + continue; + + if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE) + && st->last_accessed_time + rrdset_free_obsolete_time < now + && st->last_updated.tv_sec + rrdset_free_obsolete_time < now + && st->last_collected_time.tv_sec + rrdset_free_obsolete_time < now + )) { + svc_rrdset_obsolete_to_archive(st); + } + else if(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS)) { + rrdset_flag_clear(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS); + svc_rrdset_archive_obsolete_dimensions(st, false); + } + } + rrdset_foreach_done(st); +} + +static void svc_rrdset_check_obsoletion(RRDHOST *host) { + worker_is_busy(WORKER_JOB_CHILD_CHART_OBSOLETION_CHECK); + + time_t now = now_realtime_sec(); + time_t last_entry_t; + RRDSET *st; + rrdset_foreach_read(st, host) { + if(rrdset_is_replicating(st)) + continue; + + last_entry_t = rrdset_last_entry_t(st); + + if(last_entry_t && last_entry_t < host->senders_connect_time && + host->senders_connect_time + TIME_TO_RUN_OBSOLETIONS_ON_CHILD_CONNECT + ITERATIONS_TO_RUN_OBSOLETIONS_ON_CHILD_CONNECT * st->update_every + < now) + + rrdset_is_obsolete(st); + } + rrdset_foreach_done(st); +} + +static void svc_rrd_cleanup_obsolete_charts_from_all_hosts() { + worker_is_busy(WORKER_JOB_CLEANUP_OBSOLETE_CHARTS_ON_HOSTS); + + rrd_rdlock(); + + RRDHOST *host; + rrdhost_foreach_read(host) { + if(rrdhost_receiver_replicating_charts(host) || rrdhost_sender_replicating_charts(host)) + continue; + + if(rrdhost_flag_check(host, RRDHOST_FLAG_PENDING_OBSOLETE_CHARTS|RRDHOST_FLAG_PENDING_OBSOLETE_DIMENSIONS)) { + rrdhost_flag_clear(host, RRDHOST_FLAG_PENDING_OBSOLETE_CHARTS|RRDHOST_FLAG_PENDING_OBSOLETE_DIMENSIONS); + svc_rrdhost_cleanup_obsolete_charts(host); + } + + if(host != localhost + && host->trigger_chart_obsoletion_check + && ( + ( + host->senders_last_chart_command + && host->senders_last_chart_command + host->health_delay_up_to < now_realtime_sec() + ) + || (host->senders_connect_time + TIME_TO_RUN_OBSOLETIONS_ON_CHILD_CONNECT < now_realtime_sec()) + ) + ) { + svc_rrdset_check_obsoletion(host); + host->trigger_chart_obsoletion_check = 0; + } + } + + rrd_unlock(); +} + +static void svc_rrdhost_cleanup_orphan_hosts(RRDHOST *protected_host) { + worker_is_busy(WORKER_JOB_CLEANUP_ORPHAN_HOSTS); + rrd_wrlock(); + + time_t now = now_realtime_sec(); + + RRDHOST *host; + +restart_after_removal: + rrdhost_foreach_write(host) { + if(!rrdhost_should_be_removed(host, protected_host, now)) + continue; + + info("Host '%s' with machine guid '%s' is obsolete - cleaning up.", rrdhost_hostname(host), host->machine_guid); + + if (rrdhost_option_check(host, RRDHOST_OPTION_DELETE_ORPHAN_HOST) + /* don't delete multi-host DB host files */ + && !(host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE && is_storage_engine_shared(host->db[0].instance)) + ) { + worker_is_busy(WORKER_JOB_DELETE_HOST_CHARTS); + rrdhost_delete_charts(host); + } + else { + worker_is_busy(WORKER_JOB_SAVE_HOST_CHARTS); + rrdhost_save_charts(host); + } + + worker_is_busy(WORKER_JOB_FREE_HOST); + rrdhost_free(host, 0); + goto restart_after_removal; + } + + rrd_unlock(); +} + +static void service_main_cleanup(void *ptr) +{ + struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr; + static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; + + debug(D_SYSTEM, "Cleaning up..."); + worker_unregister(); + + static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; +} + +/* + * The service thread. + */ +void *service_main(void *ptr) +{ + worker_register("SERVICE"); + worker_register_job_name(WORKER_JOB_CHILD_CHART_OBSOLETION_CHECK, "child chart obsoletion check"); + worker_register_job_name(WORKER_JOB_CLEANUP_OBSOLETE_CHARTS, "cleanup obsolete charts"); + worker_register_job_name(WORKER_JOB_ARCHIVE_CHART, "archive chart"); + worker_register_job_name(WORKER_JOB_ARCHIVE_CHART_DIMENSIONS, "archive chart dimensions"); + worker_register_job_name(WORKER_JOB_ARCHIVE_DIMENSION, "archive dimension"); + worker_register_job_name(WORKER_JOB_CLEANUP_ORPHAN_HOSTS, "cleanup orphan hosts"); + worker_register_job_name(WORKER_JOB_CLEANUP_OBSOLETE_CHARTS_ON_HOSTS, "cleanup obsolete charts on all hosts"); + worker_register_job_name(WORKER_JOB_FREE_HOST, "free host"); + worker_register_job_name(WORKER_JOB_SAVE_HOST_CHARTS, "save host charts"); + worker_register_job_name(WORKER_JOB_DELETE_HOST_CHARTS, "delete host charts"); + worker_register_job_name(WORKER_JOB_FREE_CHART, "free chart"); + worker_register_job_name(WORKER_JOB_SAVE_CHART, "save chart"); + worker_register_job_name(WORKER_JOB_DELETE_CHART, "delete chart"); + worker_register_job_name(WORKER_JOB_FREE_DIMENSION, "free dimension"); + + netdata_thread_cleanup_push(service_main_cleanup, ptr); + heartbeat_t hb; + heartbeat_init(&hb); + usec_t step = USEC_PER_SEC * SERVICE_HEARTBEAT; + + debug(D_SYSTEM, "Service thread starts"); + + while (!netdata_exit) { + worker_is_idle(); + heartbeat_next(&hb, step); + + svc_rrd_cleanup_obsolete_charts_from_all_hosts(); + svc_rrdhost_cleanup_orphan_hosts(localhost); + } + + netdata_thread_cleanup_pop(1); + return NULL; +} |