// SPDX-License-Identifier: GPL-3.0-or-later #include "sqlite_metadata.h" // SQL statements #define SQL_STORE_CLAIM_ID "INSERT INTO node_instance " \ "(host_id, claim_id, date_created) VALUES (@host_id, @claim_id, unixepoch()) " \ "ON CONFLICT(host_id) DO UPDATE SET claim_id = excluded.claim_id;" #define SQL_DELETE_HOST_LABELS "DELETE FROM host_label WHERE host_id = @uuid;" #define STORE_HOST_LABEL \ "INSERT INTO host_label (host_id, source_type, label_key, label_value, date_created) VALUES " #define STORE_CHART_LABEL \ "INSERT INTO chart_label (chart_id, source_type, label_key, label_value, date_created) VALUES " #define STORE_HOST_OR_CHART_LABEL_VALUE "(u2h('%s'), %d,'%s','%s', unixepoch())" #define DELETE_DIMENSION_UUID "DELETE FROM dimension WHERE dim_id = @uuid;" #define SQL_STORE_HOST_INFO \ "INSERT OR REPLACE INTO host (host_id, hostname, registry_hostname, update_every, os, timezone, tags, hops, " \ "memory_mode, abbrev_timezone, utc_offset, program_name, program_version, entries, health_enabled, last_connected) " \ "VALUES (@host_id, @hostname, @registry_hostname, @update_every, @os, @timezone, @tags, @hops, " \ "@memory_mode, @abbrev_tz, @utc_offset, @prog_name, @prog_version, @entries, @health_enabled, @last_connected);" #define SQL_STORE_CHART \ "INSERT INTO chart (chart_id, host_id, type, id, name, family, context, title, unit, plugin, module, priority, " \ "update_every, chart_type, memory_mode, history_entries) " \ "values (@chart_id, @host_id, @type, @id, @name, @family, @context, @title, @unit, @plugin, @module, @priority, " \ "@update_every, @chart_type, @memory_mode, @history_entries) " \ "ON CONFLICT(chart_id) DO UPDATE SET type=excluded.type, id=excluded.id, name=excluded.name, " \ "family=excluded.family, context=excluded.context, title=excluded.title, unit=excluded.unit, " \ "plugin=excluded.plugin, module=excluded.module, priority=excluded.priority, update_every=excluded.update_every, " \ "chart_type=excluded.chart_type, memory_mode = excluded.memory_mode, history_entries = excluded.history_entries" #define SQL_STORE_DIMENSION \ "INSERT INTO dimension (dim_id, chart_id, id, name, multiplier, divisor , algorithm, options) " \ "VALUES (@dim_id, @chart_id, @id, @name, @multiplier, @divisor, @algorithm, @options) " \ "ON CONFLICT(dim_id) DO UPDATE SET id=excluded.id, name=excluded.name, multiplier=excluded.multiplier, " \ "divisor=excluded.divisor, algorithm=excluded.algorithm, options=excluded.options" #define SELECT_DIMENSION_LIST "SELECT dim_id, rowid FROM dimension WHERE rowid > @row_id" #define SELECT_CHART_LIST "SELECT chart_id, rowid FROM chart WHERE rowid > @row_id" #define SELECT_CHART_LABEL_LIST "SELECT chart_id, rowid FROM chart_label WHERE rowid > @row_id" #define SQL_STORE_HOST_SYSTEM_INFO_VALUES \ "INSERT OR REPLACE INTO host_info (host_id, system_key, system_value, date_created) VALUES " \ "(@uuid, @name, @value, UNIXEPOCH())" #define MIGRATE_LOCALHOST_TO_NEW_MACHINE_GUID \ "UPDATE chart SET host_id = @host_id WHERE host_id in (SELECT host_id FROM host where host_id <> @host_id and hops = 0);" #define DELETE_NON_EXISTING_LOCALHOST "DELETE FROM host WHERE hops = 0 AND host_id <> @host_id;" #define DELETE_MISSING_NODE_INSTANCES "DELETE FROM node_instance WHERE host_id NOT IN (SELECT host_id FROM host);" #define METADATA_CMD_Q_MAX_SIZE (2048) // Max queue size; callers will block until there is room #define METADATA_MAINTENANCE_FIRST_CHECK (1800) // Maintenance first run after agent startup in seconds #define METADATA_MAINTENANCE_REPEAT (60) // Repeat if last run for dimensions, charts, labels needs more work #define METADATA_HEALTH_LOG_INTERVAL (3600) // Repeat maintenance for health #define METADATA_DIM_CHECK_INTERVAL (3600) // Repeat maintenance for dimensions #define METADATA_CHART_CHECK_INTERVAL (3600) // Repeat maintenance for charts #define METADATA_LABEL_CHECK_INTERVAL (3600) // Repeat maintenance for labels #define METADATA_RUNTIME_THRESHOLD (5) // Run time threshold for cleanup task #define METADATA_HOST_CHECK_FIRST_CHECK (5) // First check for pending metadata #define METADATA_HOST_CHECK_INTERVAL (30) // Repeat check for pending metadata #define METADATA_HOST_CHECK_IMMEDIATE (5) // Repeat immediate run because we have more metadata to write #define MAX_METADATA_CLEANUP (500) // Maximum metadata write operations (e.g deletes before retrying) #define METADATA_MAX_BATCH_SIZE (512) // Maximum commands to execute before running the event loop #define DATABASE_FREE_PAGES_THRESHOLD_PC (5) // Percentage of free pages to trigger vacuum #define DATABASE_FREE_PAGES_VACUUM_PC (10) // Percentage of free pages to vacuum enum metadata_opcode { METADATA_DATABASE_NOOP = 0, METADATA_DATABASE_TIMER, METADATA_DEL_DIMENSION, METADATA_STORE_CLAIM_ID, METADATA_ADD_HOST_INFO, METADATA_SCAN_HOSTS, METADATA_LOAD_HOST_CONTEXT, METADATA_MAINTENANCE, METADATA_SYNC_SHUTDOWN, METADATA_UNITTEST, METADATA_ML_LOAD_MODELS, // leave this last // we need it to check for worker utilization METADATA_MAX_ENUMERATIONS_DEFINED }; #define MAX_PARAM_LIST (2) struct metadata_cmd { enum metadata_opcode opcode; struct completion *completion; const void *param[MAX_PARAM_LIST]; struct metadata_cmd *prev, *next; }; struct metadata_database_cmdqueue { struct metadata_cmd *cmd_base; }; typedef enum { METADATA_FLAG_PROCESSING = (1 << 0), // store or cleanup METADATA_FLAG_SHUTDOWN = (1 << 1), // Shutting down METADATA_FLAG_ML_LOADING = (1 << 2), // ML model load in progress } METADATA_FLAG; struct metadata_wc { uv_thread_t thread; uv_loop_t *loop; uv_async_t async; uv_timer_t timer_req; time_t metadata_check_after; volatile unsigned queue_size; METADATA_FLAG flags; struct completion init_complete; struct completion *scan_complete; /* FIFO command queue */ uv_mutex_t cmd_mutex; struct metadata_database_cmdqueue cmd_queue; }; #define metadata_flag_check(target_flags, flag) (__atomic_load_n(&((target_flags)->flags), __ATOMIC_SEQ_CST) & (flag)) #define metadata_flag_set(target_flags, flag) __atomic_or_fetch(&((target_flags)->flags), (flag), __ATOMIC_SEQ_CST) #define metadata_flag_clear(target_flags, flag) __atomic_and_fetch(&((target_flags)->flags), ~(flag), __ATOMIC_SEQ_CST) // // For unittest // struct thread_unittest { int join; unsigned added; unsigned processed; unsigned *done; }; // Metadata functions struct query_build { BUFFER *sql; int count; char uuid_str[UUID_STR_LEN]; }; static int host_label_store_to_sql_callback(const char *name, const char *value, RRDLABEL_SRC ls, void *data) { struct query_build *lb = data; if (unlikely(!lb->count)) buffer_sprintf(lb->sql, STORE_HOST_LABEL); else buffer_strcat(lb->sql, ", "); buffer_sprintf(lb->sql, STORE_HOST_OR_CHART_LABEL_VALUE, lb->uuid_str, (int) (ls & ~(RRDLABEL_FLAG_INTERNAL)), name, value); lb->count++; return 1; } static int chart_label_store_to_sql_callback(const char *name, const char *value, RRDLABEL_SRC ls, void *data) { struct query_build *lb = data; if (unlikely(!lb->count)) buffer_sprintf(lb->sql, STORE_CHART_LABEL); else buffer_strcat(lb->sql, ", "); buffer_sprintf(lb->sql, STORE_HOST_OR_CHART_LABEL_VALUE, lb->uuid_str, (int) (ls & ~(RRDLABEL_FLAG_INTERNAL)), name, value); lb->count++; return 1; } #define SQL_DELETE_CHART_LABEL "DELETE FROM chart_label WHERE chart_id = @chart_id;" #define SQL_DELETE_CHART_LABEL_HISTORY "DELETE FROM chart_label WHERE date_created < %ld AND chart_id = @chart_id;" static void clean_old_chart_labels(RRDSET *st) { char sql[512]; time_t first_time_s = rrdset_first_entry_s(st); if (unlikely(!first_time_s)) snprintfz(sql, 511,SQL_DELETE_CHART_LABEL); else snprintfz(sql, 511,SQL_DELETE_CHART_LABEL_HISTORY, first_time_s); int rc = exec_statement_with_uuid(sql, &st->chart_uuid); if (unlikely(rc)) error_report("METADATA: 'host:%s' Failed to clean old labels for chart %s", rrdhost_hostname(st->rrdhost), rrdset_name(st)); } static int check_and_update_chart_labels(RRDSET *st, BUFFER *work_buffer, size_t *query_counter) { size_t old_version = st->rrdlabels_last_saved_version; size_t new_version = rrdlabels_version(st->rrdlabels); if (new_version == old_version) return 0; struct query_build tmp = {.sql = work_buffer, .count = 0}; uuid_unparse_lower(st->chart_uuid, tmp.uuid_str); rrdlabels_walkthrough_read(st->rrdlabels, chart_label_store_to_sql_callback, &tmp); buffer_strcat(work_buffer, " ON CONFLICT (chart_id, label_key) DO UPDATE SET source_type = excluded.source_type, label_value=excluded.label_value, date_created=UNIXEPOCH()"); int rc = db_execute(db_meta, buffer_tostring(work_buffer)); if (likely(!rc)) { st->rrdlabels_last_saved_version = new_version; (*query_counter)++; } clean_old_chart_labels(st); return rc; } // Migrate all hosts with hops zero to this host_uuid void migrate_localhost(uuid_t *host_uuid) { int rc; rc = exec_statement_with_uuid(MIGRATE_LOCALHOST_TO_NEW_MACHINE_GUID, host_uuid); if (!rc) rc = exec_statement_with_uuid(DELETE_NON_EXISTING_LOCALHOST, host_uuid); if (!rc) { if (unlikely(db_execute(db_meta, DELETE_MISSING_NODE_INSTANCES))) error_report("Failed to remove deleted hosts from node instances"); } } static int store_claim_id(uuid_t *host_id, uuid_t *claim_id) { sqlite3_stmt *res = NULL; int rc; if (unlikely(!db_meta)) { if (default_rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) error_report("Database has not been initialized"); return 1; } rc = sqlite3_prepare_v2(db_meta, SQL_STORE_CLAIM_ID, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to store host claim id"); return 1; } rc = sqlite3_bind_blob(res, 1, host_id, sizeof(*host_id), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to bind host_id parameter to store claim id"); goto failed; } if (claim_id) rc = sqlite3_bind_blob(res, 2, claim_id, sizeof(*claim_id), SQLITE_STATIC); else rc = sqlite3_bind_null(res, 2); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to bind claim_id parameter to host claim id"); goto failed; } rc = execute_insert(res); if (unlikely(rc != SQLITE_DONE)) error_report("Failed to store host claim id rc = %d", rc); failed: if (unlikely(sqlite3_finalize(res) != SQLITE_OK)) error_report("Failed to finalize the prepared statement when storing a host claim id"); return rc != SQLITE_DONE; } static void delete_dimension_uuid(uuid_t *dimension_uuid, sqlite3_stmt **action_res __maybe_unused, bool flag __maybe_unused) { static __thread sqlite3_stmt *res = NULL; int rc; if (unlikely(!res)) { rc = prepare_statement(db_meta, DELETE_DIMENSION_UUID, &res); if (rc != SQLITE_OK) { error_report("Failed to prepare statement to delete a dimension uuid"); return; } } rc = sqlite3_bind_blob(res, 1, dimension_uuid, sizeof(*dimension_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto skip_execution; rc = sqlite3_step_monitored(res); if (unlikely(rc != SQLITE_DONE)) error_report("Failed to delete dimension uuid, rc = %d", rc); skip_execution: rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement when deleting dimension UUID, rc = %d", rc); } // // Store host and host system info information in the database static int store_host_metadata(RRDHOST *host) { static __thread sqlite3_stmt *res = NULL; int rc, param = 0; if (unlikely((!res))) { rc = prepare_statement(db_meta, SQL_STORE_HOST_INFO, &res); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to store host, rc = %d", rc); return 1; } } rc = sqlite3_bind_blob(res, ++param, &host->host_uuid, sizeof(host->host_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_hostname(host), 0); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_registry_hostname(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, host->rrd_update_every); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_os(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_timezone(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_tags(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, host->system_info ? host->system_info->hops : 0); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, host->rrd_memory_mode); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_abbrev_timezone(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, host->utc_offset); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_program_name(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, rrdhost_program_version(host), 1); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int64(res, ++param, host->rrd_history_entries); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, (int ) host->health.health_enabled); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int64(res, ++param, (sqlite3_int64) host->last_connected); if (unlikely(rc != SQLITE_OK)) goto bind_fail; int store_rc = sqlite3_step_monitored(res); if (unlikely(store_rc != SQLITE_DONE)) error_report("Failed to store host %s, rc = %d", rrdhost_hostname(host), rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement to store host %s, rc = %d", rrdhost_hostname(host), rc); return store_rc != SQLITE_DONE; bind_fail: error_report("Failed to bind %d parameter to store host %s, rc = %d", param, rrdhost_hostname(host), rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement to store host %s, rc = %d", rrdhost_hostname(host), rc); return 1; } static int add_host_sysinfo_key_value(const char *name, const char *value, uuid_t *uuid) { static __thread sqlite3_stmt *res = NULL; int rc, param = 0; if (unlikely(!db_meta)) { if (default_rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE) return 0; error_report("Database has not been initialized"); return 0; } if (unlikely((!res))) { rc = prepare_statement(db_meta, SQL_STORE_HOST_SYSTEM_INFO_VALUES, &res); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to store host info values, rc = %d", rc); return 0; } } rc = sqlite3_bind_blob(res, ++param, uuid, sizeof(*uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, name, 0); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = bind_text_null(res, ++param, value ? value : "unknown", 0); if (unlikely(rc != SQLITE_OK)) goto bind_fail; int store_rc = sqlite3_step_monitored(res); if (unlikely(store_rc != SQLITE_DONE)) error_report("Failed to store host info value %s, rc = %d", name, rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement to store host info value %s, rc = %d", name, rc); return store_rc == SQLITE_DONE; bind_fail: error_report("Failed to bind %d parameter to store host info values %s, rc = %d", param, name, rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement to store host info values %s, rc = %d", name, rc); return 0; } static bool store_host_systeminfo(RRDHOST *host) { struct rrdhost_system_info *system_info = host->system_info; if (unlikely(!system_info)) return false; int ret = 0; ret += add_host_sysinfo_key_value("NETDATA_CONTAINER_OS_NAME", system_info->container_os_name, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_CONTAINER_OS_ID", system_info->container_os_id, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_CONTAINER_OS_ID_LIKE", system_info->container_os_id_like, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_CONTAINER_OS_VERSION", system_info->container_os_version, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_CONTAINER_OS_VERSION_ID", system_info->container_os_version_id, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_CONTAINER_OS_DETECTION", system_info->host_os_detection, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_OS_NAME", system_info->host_os_name, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_OS_ID", system_info->host_os_id, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_OS_ID_LIKE", system_info->host_os_id_like, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_OS_VERSION", system_info->host_os_version, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_OS_VERSION_ID", system_info->host_os_version_id, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_OS_DETECTION", system_info->host_os_detection, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_KERNEL_NAME", system_info->kernel_name, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_CPU_LOGICAL_CPU_COUNT", system_info->host_cores, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_CPU_FREQ", system_info->host_cpu_freq, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_TOTAL_RAM", system_info->host_ram_total, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_TOTAL_DISK_SIZE", system_info->host_disk_space, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_KERNEL_VERSION", system_info->kernel_version, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_ARCHITECTURE", system_info->architecture, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_VIRTUALIZATION", system_info->virtualization, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_VIRT_DETECTION", system_info->virt_detection, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_CONTAINER", system_info->container, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_SYSTEM_CONTAINER_DETECTION", system_info->container_detection, &host->host_uuid); ret += add_host_sysinfo_key_value("NETDATA_HOST_IS_K8S_NODE", system_info->is_k8s_node, &host->host_uuid); return !(24 == ret); } /* * Store a chart in the database */ static int store_chart_metadata(RRDSET *st) { static __thread sqlite3_stmt *res = NULL; int rc, param = 0, store_rc = 0; if (unlikely(!res)) { rc = prepare_statement(db_meta, SQL_STORE_CHART, &res); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to store chart, rc = %d", rc); return 1; } } rc = sqlite3_bind_blob(res, ++param, &st->chart_uuid, sizeof(st->chart_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_blob(res, ++param, &st->rrdhost->host_uuid, sizeof(st->rrdhost->host_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, string2str(st->parts.type), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, string2str(st->parts.id), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; const char *name = string2str(st->parts.name); if (name && *name) rc = sqlite3_bind_text(res, ++param, name, -1, SQLITE_STATIC); else rc = sqlite3_bind_null(res, ++param); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, rrdset_family(st), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, rrdset_context(st), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, rrdset_title(st), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, rrdset_units(st), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, rrdset_plugin_name(st), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, rrdset_module_name(st), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, (int) st->priority); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, st->update_every); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, st->chart_type); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, st->rrd_memory_mode); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, (int) st->db.entries); if (unlikely(rc != SQLITE_OK)) goto bind_fail; store_rc = execute_insert(res); if (unlikely(store_rc != SQLITE_DONE)) error_report("Failed to store chart, rc = %d", store_rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement in chart store function, rc = %d", rc); return store_rc != SQLITE_DONE; bind_fail: error_report("Failed to bind parameter %d to store chart, rc = %d", param, rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement in chart store function, rc = %d", rc); return 1; } /* * Store a dimension */ static int store_dimension_metadata(RRDDIM *rd) { static __thread sqlite3_stmt *res = NULL; int rc, param = 0; if (unlikely(!res)) { rc = prepare_statement(db_meta, SQL_STORE_DIMENSION, &res); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to store dimension, rc = %d", rc); return 1; } } rc = sqlite3_bind_blob(res, ++param, &rd->metric_uuid, sizeof(rd->metric_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_blob(res, ++param, &rd->rrdset->chart_uuid, sizeof(rd->rrdset->chart_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, string2str(rd->id), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_text(res, ++param, string2str(rd->name), -1, SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, (int) rd->multiplier); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, (int ) rd->divisor); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = sqlite3_bind_int(res, ++param, rd->algorithm); if (unlikely(rc != SQLITE_OK)) goto bind_fail; if (rrddim_option_check(rd, RRDDIM_OPTION_HIDDEN)) rc = sqlite3_bind_text(res, ++param, "hidden", -1, SQLITE_STATIC); else rc = sqlite3_bind_null(res, ++param); if (unlikely(rc != SQLITE_OK)) goto bind_fail; rc = execute_insert(res); if (unlikely(rc != SQLITE_DONE)) error_report("Failed to store dimension, rc = %d", rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement in store dimension, rc = %d", rc); return 0; bind_fail: error_report("Failed to bind parameter %d to store dimension, rc = %d", param, rc); rc = sqlite3_reset(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to reset statement in store dimension, rc = %d", rc); return 1; } static bool dimension_can_be_deleted(uuid_t *dim_uuid __maybe_unused, sqlite3_stmt **res __maybe_unused, bool flag __maybe_unused) { #ifdef ENABLE_DBENGINE if(dbengine_enabled) { bool no_retention = true; for (size_t tier = 0; tier < storage_tiers; tier++) { if (!multidb_ctx[tier]) continue; time_t first_time_t = 0, last_time_t = 0; if (rrdeng_metric_retention_by_uuid((void *) multidb_ctx[tier], dim_uuid, &first_time_t, &last_time_t)) { if (first_time_t > 0) { no_retention = false; break; } } } return no_retention; } else return false; #else return false; #endif } int get_pragma_value(sqlite3 *database, const char *sql) { sqlite3_stmt *res = NULL; int rc = sqlite3_prepare_v2(database, sql, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) return -1; int result = -1; rc = sqlite3_step_monitored(res); if (likely(rc == SQLITE_ROW)) result = sqlite3_column_int(res, 0); rc = sqlite3_finalize(res); (void) rc; return result; } int get_free_page_count(sqlite3 *database) { return get_pragma_value(database, "PRAGMA freelist_count"); } int get_database_page_count(sqlite3 *database) { return get_pragma_value(database, "PRAGMA page_count"); } static bool run_cleanup_loop( sqlite3_stmt *res, struct metadata_wc *wc, bool (*check_cb)(uuid_t *, sqlite3_stmt **, bool), void (*action_cb)(uuid_t *, sqlite3_stmt **, bool), uint32_t *total_checked, uint32_t *total_deleted, uint64_t *row_id, sqlite3_stmt **check_stmt, sqlite3_stmt **action_stmt, bool check_flag, bool action_flag) { if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) return true; int rc = sqlite3_bind_int64(res, 1, (sqlite3_int64) *row_id); if (unlikely(rc != SQLITE_OK)) return true; time_t start_running = now_monotonic_sec(); bool time_expired = false; while (!time_expired && sqlite3_step_monitored(res) == SQLITE_ROW && (*total_deleted < MAX_METADATA_CLEANUP && *total_checked < MAX_METADATA_CLEANUP)) { if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) break; *row_id = sqlite3_column_int64(res, 1); rc = check_cb((uuid_t *)sqlite3_column_blob(res, 0), check_stmt, check_flag); if (rc == true) { action_cb((uuid_t *)sqlite3_column_blob(res, 0), action_stmt, action_flag); (*total_deleted)++; } (*total_checked)++; time_expired = ((now_monotonic_sec() - start_running) > METADATA_RUNTIME_THRESHOLD); } return time_expired || (*total_checked == MAX_METADATA_CLEANUP) || (*total_deleted == MAX_METADATA_CLEANUP); } #define SQL_CHECK_CHART_EXISTENCE_IN_DIMENSION "SELECT count(1) FROM dimension WHERE chart_id = @chart_id" #define SQL_CHECK_CHART_EXISTENCE_IN_CHART "SELECT count(1) FROM chart WHERE chart_id = @chart_id" static bool chart_can_be_deleted(uuid_t *chart_uuid, sqlite3_stmt **check_res, bool check_in_dimension) { int rc, result = 1; sqlite3_stmt *res = check_res ? *check_res : NULL; if (!res) { if (check_in_dimension) rc = sqlite3_prepare_v2(db_meta, SQL_CHECK_CHART_EXISTENCE_IN_DIMENSION, -1, &res, 0); else rc = sqlite3_prepare_v2(db_meta, SQL_CHECK_CHART_EXISTENCE_IN_CHART, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to check for chart existence, rc = %d", rc); return 0; } if (check_res) *check_res = res; } rc = sqlite3_bind_blob(res, 1, chart_uuid, sizeof(*chart_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to bind chart uuid parameter, rc = %d", rc); goto skip; } rc = sqlite3_step_monitored(res); if (likely(rc == SQLITE_ROW)) result = sqlite3_column_int(res, 0); skip: if (check_res) rc = sqlite3_reset(res); else rc = sqlite3_finalize(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to %s statement that checks chart uuid existence rc = %d", check_res ? "reset" : "finalize", rc); return result == 0; } #define SQL_DELETE_CHART_BY_UUID "DELETE FROM chart WHERE chart_id = @chart_id" #define SQL_DELETE_CHART_LABEL_BY_UUID "DELETE FROM chart_label WHERE chart_id = @chart_id" static void delete_chart_uuid(uuid_t *chart_uuid, sqlite3_stmt **action_res, bool label_only) { int rc; sqlite3_stmt *res = action_res ? *action_res : NULL; if (!res) { if (label_only) rc = sqlite3_prepare_v2(db_meta, SQL_DELETE_CHART_LABEL_BY_UUID, -1, &res, 0); else rc = sqlite3_prepare_v2(db_meta, SQL_DELETE_CHART_BY_UUID, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to check for chart existence, rc = %d", rc); return; } if (action_res) *action_res = res; } rc = sqlite3_bind_blob(res, 1, chart_uuid, sizeof(*chart_uuid), SQLITE_STATIC); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to bind chart uuid parameter, rc = %d", rc); goto skip; } rc = sqlite3_step_monitored(res); if (unlikely(rc != SQLITE_DONE)) error_report("Failed to delete a chart uuid from the %s table, rc = %d", label_only ? "labels" : "chart", rc); skip: if (action_res) rc = sqlite3_reset(res); else rc = sqlite3_finalize(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to %s statement that deletes a chart uuid rc = %d", action_res ? "reset" : "finalize", rc); } static void check_dimension_metadata(struct metadata_wc *wc) { static time_t next_execution_t = 0; static uint64_t last_row_id = 0; time_t now = now_realtime_sec(); if (!next_execution_t) next_execution_t = now + METADATA_MAINTENANCE_FIRST_CHECK; if (next_execution_t && next_execution_t > now) return; int rc; sqlite3_stmt *res = NULL; rc = sqlite3_prepare_v2(db_meta, SELECT_DIMENSION_LIST, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to fetch host dimensions"); return; } uint32_t total_checked = 0; uint32_t total_deleted = 0; internal_error(true, "METADATA: Checking dimensions starting after row %"PRIu64, last_row_id); bool more_to_do = run_cleanup_loop( res, wc, dimension_can_be_deleted, delete_dimension_uuid, &total_checked, &total_deleted, &last_row_id, NULL, NULL, false, false); now = now_realtime_sec(); if (more_to_do) next_execution_t = now + METADATA_MAINTENANCE_REPEAT; else { last_row_id = 0; next_execution_t = now + METADATA_DIM_CHECK_INTERVAL; } netdata_log_info( "METADATA: Dimensions checked %u, deleted %u. Checks will %s in %lld seconds", total_checked, total_deleted, last_row_id ? "resume" : "restart", (long long)(next_execution_t - now)); rc = sqlite3_finalize(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to finalize the prepared statement to check dimensions"); } static void check_chart_metadata(struct metadata_wc *wc) { static time_t next_execution_t = 0; static uint64_t last_row_id = 0; time_t now = now_realtime_sec(); if (!next_execution_t) next_execution_t = now + METADATA_MAINTENANCE_FIRST_CHECK; if (next_execution_t && next_execution_t > now) return; sqlite3_stmt *res = NULL; int rc = sqlite3_prepare_v2(db_meta, SELECT_CHART_LIST, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to fetch charts"); return; } uint32_t total_checked = 0; uint32_t total_deleted = 0; internal_error(true, "METADATA: Checking charts starting after row %"PRIu64, last_row_id); sqlite3_stmt *check_res = NULL; sqlite3_stmt *action_res = NULL; bool more_to_do = run_cleanup_loop( res, wc, chart_can_be_deleted, delete_chart_uuid, &total_checked, &total_deleted, &last_row_id, &check_res, &action_res, true, false); if (check_res) sqlite3_finalize(check_res); if (action_res) sqlite3_finalize(action_res); now = now_realtime_sec(); if (more_to_do) next_execution_t = now + METADATA_MAINTENANCE_REPEAT; else { last_row_id = 0; next_execution_t = now + METADATA_CHART_CHECK_INTERVAL; } netdata_log_info( "METADATA: Charts checked %u, deleted %u. Checks will %s in %lld seconds", total_checked, total_deleted, last_row_id ? "resume" : "restart", (long long)(next_execution_t - now)); rc = sqlite3_finalize(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to finalize the prepared statement when reading charts"); } static void check_label_metadata(struct metadata_wc *wc) { static time_t next_execution_t = 0; static uint64_t last_row_id = 0; time_t now = now_realtime_sec(); if (!next_execution_t) next_execution_t = now + METADATA_MAINTENANCE_FIRST_CHECK; if (next_execution_t && next_execution_t > now) return; int rc; sqlite3_stmt *res = NULL; rc = sqlite3_prepare_v2(db_meta, SELECT_CHART_LABEL_LIST, -1, &res, 0); if (unlikely(rc != SQLITE_OK)) { error_report("Failed to prepare statement to fetch charts"); return; } uint32_t total_checked = 0; uint32_t total_deleted = 0; internal_error(true,"METADATA: Checking charts labels starting after row %"PRIu64, last_row_id); sqlite3_stmt *check_res = NULL; sqlite3_stmt *action_res = NULL; bool more_to_do = run_cleanup_loop( res, wc, chart_can_be_deleted, delete_chart_uuid, &total_checked, &total_deleted, &last_row_id, &check_res, &action_res, false, true); if (check_res) sqlite3_finalize(check_res); if (action_res) sqlite3_finalize(action_res); now = now_realtime_sec(); if (more_to_do) next_execution_t = now + METADATA_MAINTENANCE_REPEAT; else { last_row_id = 0; next_execution_t = now + METADATA_LABEL_CHECK_INTERVAL; } netdata_log_info( "METADATA: Chart labels checked %u, deleted %u. Checks will %s in %lld seconds", total_checked, total_deleted, last_row_id ? "resume" : "restart", (long long)(next_execution_t - now)); rc = sqlite3_finalize(res); if (unlikely(rc != SQLITE_OK)) error_report("Failed to finalize the prepared statement when checking charts"); } static void cleanup_health_log(struct metadata_wc *wc) { static time_t next_execution_t = 0; time_t now = now_realtime_sec(); if (!next_execution_t) next_execution_t = now + METADATA_MAINTENANCE_FIRST_CHECK; if (next_execution_t && next_execution_t > now) return; next_execution_t = now + METADATA_HEALTH_LOG_INTERVAL; RRDHOST *host; bool is_claimed = claimed(); dfe_start_reentrant(rrdhost_root_index, host){ if (rrdhost_flag_check(host, RRDHOST_FLAG_ARCHIVED)) continue; sql_health_alarm_log_cleanup(host, is_claimed); if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) break; } dfe_done(host); if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) return; (void) db_execute(db_meta,"DELETE FROM health_log WHERE host_id NOT IN (SELECT host_id FROM host)"); (void) db_execute(db_meta,"DELETE FROM health_log_detail WHERE health_log_id NOT IN (SELECT health_log_id FROM health_log)"); } // // EVENT LOOP STARTS HERE // static void metadata_init_cmd_queue(struct metadata_wc *wc) { wc->cmd_queue.cmd_base = NULL; fatal_assert(0 == uv_mutex_init(&wc->cmd_mutex)); } static void metadata_free_cmd_queue(struct metadata_wc *wc) { uv_mutex_lock(&wc->cmd_mutex); while(wc->cmd_queue.cmd_base) { struct metadata_cmd *t = wc->cmd_queue.cmd_base; DOUBLE_LINKED_LIST_REMOVE_ITEM_UNSAFE(wc->cmd_queue.cmd_base, t, prev, next); freez(t); } uv_mutex_unlock(&wc->cmd_mutex); } static void metadata_enq_cmd(struct metadata_wc *wc, struct metadata_cmd *cmd) { if (cmd->opcode == METADATA_SYNC_SHUTDOWN) { metadata_flag_set(wc, METADATA_FLAG_SHUTDOWN); goto wakeup_event_loop; } if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) goto wakeup_event_loop; struct metadata_cmd *t = mallocz(sizeof(*t)); *t = *cmd; t->prev = t->next = NULL; uv_mutex_lock(&wc->cmd_mutex); DOUBLE_LINKED_LIST_APPEND_ITEM_UNSAFE(wc->cmd_queue.cmd_base, t, prev, next); uv_mutex_unlock(&wc->cmd_mutex); wakeup_event_loop: (void) uv_async_send(&wc->async); } static struct metadata_cmd metadata_deq_cmd(struct metadata_wc *wc) { struct metadata_cmd ret; uv_mutex_lock(&wc->cmd_mutex); if(wc->cmd_queue.cmd_base) { struct metadata_cmd *t = wc->cmd_queue.cmd_base; DOUBLE_LINKED_LIST_REMOVE_ITEM_UNSAFE(wc->cmd_queue.cmd_base, t, prev, next); ret = *t; freez(t); } else { ret.opcode = METADATA_DATABASE_NOOP; ret.completion = NULL; } uv_mutex_unlock(&wc->cmd_mutex); return ret; } static void async_cb(uv_async_t *handle) { uv_stop(handle->loop); uv_update_time(handle->loop); } #define TIMER_INITIAL_PERIOD_MS (1000) #define TIMER_REPEAT_PERIOD_MS (1000) static void timer_cb(uv_timer_t* handle) { uv_stop(handle->loop); uv_update_time(handle->loop); struct metadata_wc *wc = handle->data; struct metadata_cmd cmd; memset(&cmd, 0, sizeof(cmd)); time_t now = now_realtime_sec(); if (wc->metadata_check_after && wc->metadata_check_after < now) { cmd.opcode = METADATA_SCAN_HOSTS; metadata_enq_cmd(wc, &cmd); } } void vacuum_database(sqlite3 *database, const char *db_alias, int threshold, int vacuum_pc) { int free_pages = get_free_page_count(database); int total_pages = get_database_page_count(database); if (!threshold) threshold = DATABASE_FREE_PAGES_THRESHOLD_PC; if (!vacuum_pc) vacuum_pc = DATABASE_FREE_PAGES_VACUUM_PC; if (free_pages > (total_pages * threshold / 100)) { int do_free_pages = (int) (free_pages * vacuum_pc / 100); netdata_log_info("%s: Freeing %d database pages", db_alias, do_free_pages); char sql[128]; snprintfz(sql, 127, "PRAGMA incremental_vacuum(%d)", do_free_pages); (void) db_execute(database, sql); } } void run_metadata_cleanup(struct metadata_wc *wc) { if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) return; check_dimension_metadata(wc); check_chart_metadata(wc); check_label_metadata(wc); cleanup_health_log(wc); if (unlikely(metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) return; vacuum_database(db_meta, "METADATA", DATABASE_FREE_PAGES_THRESHOLD_PC, DATABASE_FREE_PAGES_VACUUM_PC); (void) sqlite3_wal_checkpoint(db_meta, NULL); } struct ml_model_payload { uv_work_t request; struct metadata_wc *wc; Pvoid_t JudyL; size_t count; }; struct scan_metadata_payload { uv_work_t request; struct metadata_wc *wc; BUFFER *work_buffer; uint32_t max_count; }; struct host_context_load_thread { uv_thread_t thread; RRDHOST *host; bool busy; bool finished; }; static void restore_host_context(void *arg) { struct host_context_load_thread *hclt = arg; RRDHOST *host = hclt->host; usec_t started_ut = now_monotonic_usec(); (void)started_ut; rrdhost_load_rrdcontext_data(host); usec_t ended_ut = now_monotonic_usec(); (void)ended_ut; rrdhost_flag_clear(host, RRDHOST_FLAG_PENDING_CONTEXT_LOAD | RRDHOST_FLAG_CONTEXT_LOAD_IN_PROGRESS); #ifdef ENABLE_ACLK aclk_queue_node_info(host, false); #endif internal_error(true, "METADATA: 'host:%s' context load in %0.2f ms", rrdhost_hostname(host), (double)(ended_ut - started_ut) / USEC_PER_MS); __atomic_store_n(&hclt->finished, true, __ATOMIC_RELEASE); } // Callback after scan of hosts is done static void after_start_host_load_context(uv_work_t *req, int status __maybe_unused) { struct scan_metadata_payload *data = req->data; freez(data); } #define MAX_FIND_THREAD_RETRIES (10) static void cleanup_finished_threads(struct host_context_load_thread *hclt, size_t max_thread_slots, bool wait) { for (size_t index = 0; index < max_thread_slots; index++) { if (__atomic_load_n(&(hclt[index].finished), __ATOMIC_RELAXED) || (wait && __atomic_load_n(&(hclt[index].busy), __ATOMIC_ACQUIRE))) { int rc = uv_thread_join(&(hclt[index].thread)); if (rc) netdata_log_error("Failed to join thread, rc = %d",rc); __atomic_store_n(&(hclt[index].busy), false, __ATOMIC_RELEASE); __atomic_store_n(&(hclt[index].finished), false, __ATOMIC_RELEASE); } } } static size_t find_available_thread_slot(struct host_context_load_thread *hclt, size_t max_thread_slots, size_t *found_index) { size_t retries = MAX_FIND_THREAD_RETRIES; while (retries--) { size_t index = 0; while (index < max_thread_slots) { if (false == __atomic_load_n(&(hclt[index].busy), __ATOMIC_ACQUIRE)) { *found_index = index; return true; } index++; } sleep_usec(10 * USEC_PER_MS); } return false; } static void start_all_host_load_context(uv_work_t *req __maybe_unused) { register_libuv_worker_jobs(); struct scan_metadata_payload *data = req->data; UNUSED(data); worker_is_busy(UV_EVENT_HOST_CONTEXT_LOAD); usec_t started_ut = now_monotonic_usec(); (void)started_ut; RRDHOST *host; size_t max_threads = MIN(get_netdata_cpus() / 2, 6); struct host_context_load_thread *hclt = callocz(max_threads, sizeof(*hclt)); size_t thread_index; dfe_start_reentrant(rrdhost_root_index, host) { if (rrdhost_flag_check(host, RRDHOST_FLAG_CONTEXT_LOAD_IN_PROGRESS) || !rrdhost_flag_check(host, RRDHOST_FLAG_PENDING_CONTEXT_LOAD)) continue; rrdhost_flag_set(host, RRDHOST_FLAG_CONTEXT_LOAD_IN_PROGRESS); internal_error(true, "METADATA: 'host:%s' loading context", rrdhost_hostname(host)); cleanup_finished_threads(hclt, max_threads, false); bool found_slot = find_available_thread_slot(hclt, max_threads, &thread_index); if (unlikely(!found_slot)) { struct host_context_load_thread hclt_sync = {.host = host}; restore_host_context(&hclt_sync); } else { __atomic_store_n(&hclt[thread_index].busy, true, __ATOMIC_RELAXED); hclt[thread_index].host = host; assert(0 == uv_thread_create(&hclt[thread_index].thread, restore_host_context, &hclt[thread_index])); } } dfe_done(host); cleanup_finished_threads(hclt, max_threads, true); freez(hclt); usec_t ended_ut = now_monotonic_usec(); (void)ended_ut; internal_error(true, "METADATA: 'host:ALL' contexts loaded in %0.2f ms", (double)(ended_ut - started_ut) / USEC_PER_MS); worker_is_idle(); } // Callback after scan of hosts is done static void after_metadata_hosts(uv_work_t *req, int status __maybe_unused) { struct scan_metadata_payload *data = req->data; struct metadata_wc *wc = data->wc; metadata_flag_clear(wc, METADATA_FLAG_PROCESSING); internal_error(true, "METADATA: scanning hosts complete"); if (unlikely(wc->scan_complete)) { completion_mark_complete(wc->scan_complete); internal_error(true, "METADATA: Sending completion done"); } freez(data); } static bool metadata_scan_host(RRDHOST *host, uint32_t max_count, bool use_transaction, BUFFER *work_buffer, size_t *query_counter) { RRDSET *st; int rc; bool more_to_do = false; uint32_t scan_count = 1; if (use_transaction) (void)db_execute(db_meta, "BEGIN TRANSACTION"); rrdset_foreach_reentrant(st, host) { if (scan_count == max_count) { more_to_do = true; break; } if(rrdset_flag_check(st, RRDSET_FLAG_METADATA_UPDATE)) { (*query_counter)++; rrdset_flag_clear(st, RRDSET_FLAG_METADATA_UPDATE); scan_count++; buffer_flush(work_buffer); rc = check_and_update_chart_labels(st, work_buffer, query_counter); if (unlikely(rc)) error_report("METADATA: 'host:%s': Failed to update labels for chart %s", rrdhost_hostname(host), rrdset_name(st)); else (*query_counter)++; rc = store_chart_metadata(st); if (unlikely(rc)) error_report("METADATA: 'host:%s': Failed to store metadata for chart %s", rrdhost_hostname(host), rrdset_name(st)); } RRDDIM *rd; rrddim_foreach_read(rd, st) { if(rrddim_flag_check(rd, RRDDIM_FLAG_METADATA_UPDATE)) { (*query_counter)++; rrddim_flag_clear(rd, RRDDIM_FLAG_METADATA_UPDATE); if (rrddim_option_check(rd, RRDDIM_OPTION_HIDDEN)) rrddim_flag_set(rd, RRDDIM_FLAG_META_HIDDEN); else rrddim_flag_clear(rd, RRDDIM_FLAG_META_HIDDEN); rc = store_dimension_metadata(rd); if (unlikely(rc)) error_report("METADATA: 'host:%s': Failed to dimension metadata for chart %s. dimension %s", rrdhost_hostname(host), rrdset_name(st), rrddim_name(rd)); } } rrddim_foreach_done(rd); } rrdset_foreach_done(st); if (use_transaction) (void)db_execute(db_meta, "COMMIT TRANSACTION"); return more_to_do; } static void store_host_and_system_info(RRDHOST *host, size_t *query_counter) { if (unlikely(store_host_systeminfo(host))) { error_report("METADATA: 'host:%s': Failed to store host updated system information in the database", rrdhost_hostname(host)); rrdhost_flag_set(host, RRDHOST_FLAG_METADATA_INFO | RRDHOST_FLAG_METADATA_UPDATE); } else { if (likely(query_counter)) (*query_counter)++; } if (unlikely(store_host_metadata(host))) { error_report("METADATA: 'host:%s': Failed to store host info in the database", rrdhost_hostname(host)); rrdhost_flag_set(host, RRDHOST_FLAG_METADATA_INFO | RRDHOST_FLAG_METADATA_UPDATE); } else { if (likely(query_counter)) (*query_counter)++; } } // Worker thread to scan hosts for pending metadata to store static void start_metadata_hosts(uv_work_t *req __maybe_unused) { register_libuv_worker_jobs(); RRDHOST *host; int transaction_started = 0; struct scan_metadata_payload *data = req->data; struct metadata_wc *wc = data->wc; BUFFER *work_buffer = data->work_buffer; usec_t all_started_ut = now_monotonic_usec(); (void)all_started_ut; internal_error(true, "METADATA: checking all hosts..."); usec_t started_ut = now_monotonic_usec(); (void)started_ut; bool run_again = false; worker_is_busy(UV_EVENT_METADATA_STORE); if (!data->max_count) transaction_started = !db_execute(db_meta, "BEGIN TRANSACTION;"); dfe_start_reentrant(rrdhost_root_index, host) { if (rrdhost_flag_check(host, RRDHOST_FLAG_ARCHIVED) || !rrdhost_flag_check(host, RRDHOST_FLAG_METADATA_UPDATE)) continue; size_t query_counter = 0; (void)query_counter; rrdhost_flag_clear(host,RRDHOST_FLAG_METADATA_UPDATE); if (unlikely(rrdhost_flag_check(host, RRDHOST_FLAG_METADATA_LABELS))) { rrdhost_flag_clear(host, RRDHOST_FLAG_METADATA_LABELS); int rc = exec_statement_with_uuid(SQL_DELETE_HOST_LABELS, &host->host_uuid); if (likely(!rc)) { query_counter++; buffer_flush(work_buffer); struct query_build tmp = {.sql = work_buffer, .count = 0}; uuid_unparse_lower(host->host_uuid, tmp.uuid_str); rrdlabels_walkthrough_read(host->rrdlabels, host_label_store_to_sql_callback, &tmp); buffer_strcat(work_buffer, " ON CONFLICT (host_id, label_key) DO UPDATE SET source_type = excluded.source_type, label_value=excluded.label_value, date_created=UNIXEPOCH()"); rc = db_execute(db_meta, buffer_tostring(work_buffer)); if (unlikely(rc)) { error_report("METADATA: 'host:%s': failed to update metadata host labels", rrdhost_hostname(host)); rrdhost_flag_set(host, RRDHOST_FLAG_METADATA_LABELS | RRDHOST_FLAG_METADATA_UPDATE); } else query_counter++; } else { error_report("METADATA: 'host:%s': failed to delete old host labels", rrdhost_hostname(host)); rrdhost_flag_set(host, RRDHOST_FLAG_METADATA_LABELS | RRDHOST_FLAG_METADATA_UPDATE); } } if (unlikely(rrdhost_flag_check(host, RRDHOST_FLAG_METADATA_CLAIMID))) { rrdhost_flag_clear(host, RRDHOST_FLAG_METADATA_CLAIMID); uuid_t uuid; int rc; if (likely(host->aclk_state.claimed_id && !uuid_parse(host->aclk_state.claimed_id, uuid))) rc = store_claim_id(&host->host_uuid, &uuid); else rc = store_claim_id(&host->host_uuid, NULL); if (unlikely(rc)) rrdhost_flag_set(host, RRDHOST_FLAG_METADATA_CLAIMID | RRDHOST_FLAG_METADATA_UPDATE); else query_counter++; } if (unlikely(rrdhost_flag_check(host, RRDHOST_FLAG_METADATA_INFO))) { rrdhost_flag_clear(host, RRDHOST_FLAG_METADATA_INFO); store_host_and_system_info(host, &query_counter); } // For clarity bool use_transaction = data->max_count; if (unlikely(metadata_scan_host(host, data->max_count, use_transaction, work_buffer, &query_counter))) { run_again = true; rrdhost_flag_set(host,RRDHOST_FLAG_METADATA_UPDATE); internal_error(true,"METADATA: 'host:%s': scheduling another run, more charts to store", rrdhost_hostname(host)); } usec_t ended_ut = now_monotonic_usec(); (void)ended_ut; internal_error(true, "METADATA: 'host:%s': saved metadata with %zu SQL statements, in %0.2f ms", rrdhost_hostname(host), query_counter, (double)(ended_ut - started_ut) / USEC_PER_MS); } dfe_done(host); if (!data->max_count && transaction_started) transaction_started = db_execute(db_meta, "COMMIT TRANSACTION;"); usec_t all_ended_ut = now_monotonic_usec(); (void)all_ended_ut; internal_error(true, "METADATA: checking all hosts completed in %0.2f ms", (double)(all_ended_ut - all_started_ut) / USEC_PER_MS); if (unlikely(run_again)) wc->metadata_check_after = now_realtime_sec() + METADATA_HOST_CHECK_IMMEDIATE; else { wc->metadata_check_after = now_realtime_sec() + METADATA_HOST_CHECK_INTERVAL; run_metadata_cleanup(wc); } worker_is_idle(); } // Callback after scan of hosts is done static void after_start_ml_model_load(uv_work_t *req, int status __maybe_unused) { struct ml_model_payload *ml_data = req->data; struct metadata_wc *wc = ml_data->wc; metadata_flag_clear(wc, METADATA_FLAG_ML_LOADING); JudyLFreeArray(&ml_data->JudyL, PJE0); freez(ml_data); } static void start_ml_model_load(uv_work_t *req __maybe_unused) { register_libuv_worker_jobs(); struct ml_model_payload *ml_data = req->data; worker_is_busy(UV_EVENT_METADATA_ML_LOAD); Pvoid_t *PValue; Word_t Index = 0; bool first = true; RRDDIM *rd; RRDDIM_ACQUIRED *rda; internal_error(true, "Batch ML load loader, %zu items", ml_data->count); while((PValue = JudyLFirstThenNext(ml_data->JudyL, &Index, &first))) { UNUSED(PValue); rda = (RRDDIM_ACQUIRED *) Index; rd = rrddim_acquired_to_rrddim(rda); ml_dimension_load_models(rd); rrddim_acquired_release(rda); } worker_is_idle(); } static void metadata_event_loop(void *arg) { worker_register("METASYNC"); worker_register_job_name(METADATA_DATABASE_NOOP, "noop"); worker_register_job_name(METADATA_DATABASE_TIMER, "timer"); worker_register_job_name(METADATA_DEL_DIMENSION, "delete dimension"); worker_register_job_name(METADATA_STORE_CLAIM_ID, "add claim id"); worker_register_job_name(METADATA_ADD_HOST_INFO, "add host info"); worker_register_job_name(METADATA_MAINTENANCE, "maintenance"); worker_register_job_name(METADATA_ML_LOAD_MODELS, "ml load models"); int ret; uv_loop_t *loop; unsigned cmd_batch_size; struct metadata_wc *wc = arg; enum metadata_opcode opcode; uv_thread_set_name_np(wc->thread, "METASYNC"); loop = wc->loop = mallocz(sizeof(uv_loop_t)); ret = uv_loop_init(loop); if (ret) { netdata_log_error("uv_loop_init(): %s", uv_strerror(ret)); goto error_after_loop_init; } loop->data = wc; ret = uv_async_init(wc->loop, &wc->async, async_cb); if (ret) { netdata_log_error("uv_async_init(): %s", uv_strerror(ret)); goto error_after_async_init; } wc->async.data = wc; ret = uv_timer_init(loop, &wc->timer_req); if (ret) { netdata_log_error("uv_timer_init(): %s", uv_strerror(ret)); goto error_after_timer_init; } wc->timer_req.data = wc; fatal_assert(0 == uv_timer_start(&wc->timer_req, timer_cb, TIMER_INITIAL_PERIOD_MS, TIMER_REPEAT_PERIOD_MS)); netdata_log_info("Starting metadata sync thread with %d entries command queue", METADATA_CMD_Q_MAX_SIZE); struct metadata_cmd cmd; memset(&cmd, 0, sizeof(cmd)); metadata_flag_clear(wc, METADATA_FLAG_PROCESSING); wc->metadata_check_after = now_realtime_sec() + METADATA_HOST_CHECK_FIRST_CHECK; int shutdown = 0; completion_mark_complete(&wc->init_complete); BUFFER *work_buffer = buffer_create(1024, &netdata_buffers_statistics.buffers_sqlite); struct scan_metadata_payload *data; struct ml_model_payload *ml_data = NULL; while (shutdown == 0 || (wc->flags & METADATA_FLAG_PROCESSING)) { uuid_t *uuid; RRDHOST *host = NULL; worker_is_idle(); uv_run(loop, UV_RUN_DEFAULT); /* wait for commands */ cmd_batch_size = 0; do { if (unlikely(cmd_batch_size >= METADATA_MAX_BATCH_SIZE)) break; cmd = metadata_deq_cmd(wc); opcode = cmd.opcode; if (unlikely(opcode == METADATA_DATABASE_NOOP && metadata_flag_check(wc, METADATA_FLAG_SHUTDOWN))) { shutdown = 1; continue; } ++cmd_batch_size; if (likely(opcode != METADATA_DATABASE_NOOP)) worker_is_busy(opcode); // Have pending ML models to load? if (opcode != METADATA_ML_LOAD_MODELS && ml_data && ml_data->count) { static usec_t ml_submit_last = 0; usec_t now = now_monotonic_usec(); if (!ml_submit_last) ml_submit_last = now; if (!metadata_flag_check(wc, METADATA_FLAG_ML_LOADING) && (now - ml_submit_last > 150 * USEC_PER_MS)) { metadata_flag_set(wc, METADATA_FLAG_ML_LOADING); if (unlikely(uv_queue_work(loop, &ml_data->request, start_ml_model_load, after_start_ml_model_load))) metadata_flag_clear(wc, METADATA_FLAG_ML_LOADING); else { ml_submit_last = now; ml_data = NULL; } } } switch (opcode) { case METADATA_DATABASE_NOOP: case METADATA_DATABASE_TIMER: break; case METADATA_ML_LOAD_MODELS: { RRDDIM *rd = (RRDDIM *) cmd.param[0]; RRDDIM_ACQUIRED *rda = rrddim_find_and_acquire(rd->rrdset, rrddim_id(rd)); if (likely(rda)) { if (!ml_data) { ml_data = callocz(1,sizeof(*ml_data)); ml_data->request.data = ml_data; ml_data->wc = wc; } JudyLIns(&ml_data->JudyL, (Word_t)rda, PJE0); ml_data->count++; } break; } case METADATA_DEL_DIMENSION: uuid = (uuid_t *) cmd.param[0]; if (likely(dimension_can_be_deleted(uuid, NULL, false))) delete_dimension_uuid(uuid, NULL, false); freez(uuid); break; case METADATA_STORE_CLAIM_ID: store_claim_id((uuid_t *) cmd.param[0], (uuid_t *) cmd.param[1]); freez((void *) cmd.param[0]); freez((void *) cmd.param[1]); break; case METADATA_ADD_HOST_INFO: host = (RRDHOST *) cmd.param[0]; store_host_and_system_info(host, NULL); break; case METADATA_SCAN_HOSTS: if (unlikely(metadata_flag_check(wc, METADATA_FLAG_PROCESSING))) break; if (unittest_running) break; data = mallocz(sizeof(*data)); data->request.data = data; data->wc = wc; data->work_buffer = work_buffer; if (unlikely(cmd.completion)) { data->max_count = 0; // 0 will process all pending updates cmd.completion = NULL; // Do not complete after launching worker (worker will do) } else data->max_count = 5000; metadata_flag_set(wc, METADATA_FLAG_PROCESSING); if (unlikely( uv_queue_work(loop,&data->request, start_metadata_hosts, after_metadata_hosts))) { // Failed to launch worker -- let the event loop handle completion cmd.completion = wc->scan_complete; freez(data); metadata_flag_clear(wc, METADATA_FLAG_PROCESSING); } break; case METADATA_LOAD_HOST_CONTEXT:; if (unittest_running) break; data = callocz(1,sizeof(*data)); data->request.data = data; data->wc = wc; if (unlikely( uv_queue_work(loop,&data->request, start_all_host_load_context, after_start_host_load_context))) { freez(data); } break; case METADATA_UNITTEST:; struct thread_unittest *tu = (struct thread_unittest *) cmd.param[0]; sleep_usec(1000); // processing takes 1ms __atomic_fetch_add(&tu->processed, 1, __ATOMIC_SEQ_CST); break; default: break; } if (cmd.completion) completion_mark_complete(cmd.completion); } while (opcode != METADATA_DATABASE_NOOP); } if (!uv_timer_stop(&wc->timer_req)) uv_close((uv_handle_t *)&wc->timer_req, NULL); uv_close((uv_handle_t *)&wc->async, NULL); int rc; do { rc = uv_loop_close(loop); } while (rc != UV_EBUSY); buffer_free(work_buffer); freez(loop); worker_unregister(); netdata_log_info("METADATA: Shutting down event loop"); completion_mark_complete(&wc->init_complete); completion_destroy(wc->scan_complete); freez(wc->scan_complete); metadata_free_cmd_queue(wc); return; error_after_timer_init: uv_close((uv_handle_t *)&wc->async, NULL); error_after_async_init: fatal_assert(0 == uv_loop_close(loop)); error_after_loop_init: freez(loop); worker_unregister(); } struct metadata_wc metasync_worker = {.loop = NULL}; void metadata_sync_shutdown(void) { completion_init(&metasync_worker.init_complete); struct metadata_cmd cmd; memset(&cmd, 0, sizeof(cmd)); netdata_log_info("METADATA: Sending a shutdown command"); cmd.opcode = METADATA_SYNC_SHUTDOWN; metadata_enq_cmd(&metasync_worker, &cmd); /* wait for metadata thread to shut down */ netdata_log_info("METADATA: Waiting for shutdown ACK"); completion_wait_for(&metasync_worker.init_complete); completion_destroy(&metasync_worker.init_complete); netdata_log_info("METADATA: Shutdown complete"); } void metadata_sync_shutdown_prepare(void) { if (unlikely(!metasync_worker.loop)) return; struct metadata_cmd cmd; memset(&cmd, 0, sizeof(cmd)); struct metadata_wc *wc = &metasync_worker; struct completion *compl = mallocz(sizeof(*compl)); completion_init(compl); __atomic_store_n(&wc->scan_complete, compl, __ATOMIC_RELAXED); netdata_log_info("METADATA: Sending a scan host command"); uint32_t max_wait_iterations = 2000; while (unlikely(metadata_flag_check(&metasync_worker, METADATA_FLAG_PROCESSING)) && max_wait_iterations--) { if (max_wait_iterations == 1999) netdata_log_info("METADATA: Current worker is running; waiting to finish"); sleep_usec(1000); } cmd.opcode = METADATA_SCAN_HOSTS; metadata_enq_cmd(&metasync_worker, &cmd); netdata_log_info("METADATA: Waiting for host scan completion"); completion_wait_for(wc->scan_complete); netdata_log_info("METADATA: Host scan complete; can continue with shutdown"); } // ------------------------------------------------------------- // Init function called on agent startup void metadata_sync_init(void) { struct metadata_wc *wc = &metasync_worker; memset(wc, 0, sizeof(*wc)); metadata_init_cmd_queue(wc); completion_init(&wc->init_complete); fatal_assert(0 == uv_thread_create(&(wc->thread), metadata_event_loop, wc)); completion_wait_for(&wc->init_complete); completion_destroy(&wc->init_complete); netdata_log_info("SQLite metadata sync initialization complete"); } // Helpers static inline void queue_metadata_cmd(enum metadata_opcode opcode, const void *param0, const void *param1) { struct metadata_cmd cmd; cmd.opcode = opcode; cmd.param[0] = param0; cmd.param[1] = param1; cmd.completion = NULL; metadata_enq_cmd(&metasync_worker, &cmd); } // Public void metaqueue_delete_dimension_uuid(uuid_t *uuid) { if (unlikely(!metasync_worker.loop)) return; uuid_t *use_uuid = mallocz(sizeof(*uuid)); uuid_copy(*use_uuid, *uuid); queue_metadata_cmd(METADATA_DEL_DIMENSION, use_uuid, NULL); } void metaqueue_store_claim_id(uuid_t *host_uuid, uuid_t *claim_uuid) { if (unlikely(!host_uuid)) return; uuid_t *local_host_uuid = mallocz(sizeof(*host_uuid)); uuid_t *local_claim_uuid = NULL; uuid_copy(*local_host_uuid, *host_uuid); if (likely(claim_uuid)) { local_claim_uuid = mallocz(sizeof(*claim_uuid)); uuid_copy(*local_claim_uuid, *claim_uuid); } queue_metadata_cmd(METADATA_STORE_CLAIM_ID, local_host_uuid, local_claim_uuid); } void metaqueue_host_update_info(RRDHOST *host) { if (unlikely(!metasync_worker.loop)) return; queue_metadata_cmd(METADATA_ADD_HOST_INFO, host, NULL); } void metaqueue_ml_load_models(RRDDIM *rd) { if (unlikely(!metasync_worker.loop)) return; queue_metadata_cmd(METADATA_ML_LOAD_MODELS, rd, NULL); } void metadata_queue_load_host_context(RRDHOST *host) { if (unlikely(!metasync_worker.loop)) return; queue_metadata_cmd(METADATA_LOAD_HOST_CONTEXT, host, NULL); } // // unitests // static void *unittest_queue_metadata(void *arg) { struct thread_unittest *tu = arg; struct metadata_cmd cmd; cmd.opcode = METADATA_UNITTEST; cmd.param[0] = tu; cmd.param[1] = NULL; cmd.completion = NULL; metadata_enq_cmd(&metasync_worker, &cmd); do { __atomic_fetch_add(&tu->added, 1, __ATOMIC_SEQ_CST); metadata_enq_cmd(&metasync_worker, &cmd); sleep_usec(10000); } while (!__atomic_load_n(&tu->join, __ATOMIC_RELAXED)); return arg; } static void *metadata_unittest_threads(void) { unsigned done; struct thread_unittest tu = { .join = 0, .added = 0, .processed = 0, .done = &done, }; // Queue messages / Time it time_t seconds_to_run = 5; int threads_to_create = 4; fprintf( stderr, "\nChecking metadata queue using %d threads for %lld seconds...\n", threads_to_create, (long long)seconds_to_run); netdata_thread_t threads[threads_to_create]; tu.join = 0; for (int i = 0; i < threads_to_create; i++) { char buf[100 + 1]; snprintf(buf, 100, "META[%d]", i); netdata_thread_create( &threads[i], buf, NETDATA_THREAD_OPTION_DONT_LOG | NETDATA_THREAD_OPTION_JOINABLE, unittest_queue_metadata, &tu); } (void) uv_async_send(&metasync_worker.async); sleep_usec(seconds_to_run * USEC_PER_SEC); __atomic_store_n(&tu.join, 1, __ATOMIC_RELAXED); for (int i = 0; i < threads_to_create; i++) { void *retval; netdata_thread_join(threads[i], &retval); } sleep_usec(5 * USEC_PER_SEC); fprintf(stderr, "Added %u elements, processed %u\n", tu.added, tu.processed); return 0; } int metadata_unittest(void) { metadata_sync_init(); // Queue items for a specific period of time metadata_unittest_threads(); metadata_sync_shutdown(); return 0; }