src/database/contexts/rrdcontext.c
// SPDX-License-Identifier: GPL-3.0-or-later
#include "internal.h"
// ----------------------------------------------------------------------------
// visualizing flags
struct rrdcontext_reason rrdcontext_reasons[] = {
// context related
{RRD_FLAG_UPDATE_REASON_TRIGGERED, "triggered transition", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_NEW_OBJECT, "object created", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_UPDATED_OBJECT, "object updated", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_LOAD_SQL, "loaded from sql", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_CHANGED_METADATA, "changed metadata", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_ZERO_RETENTION, "has no retention", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_CHANGED_FIRST_TIME_T, "updated first_time_t", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_CHANGED_LAST_TIME_T, "updated last_time_t", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_STOPPED_BEING_COLLECTED, "stopped collected", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_STARTED_BEING_COLLECTED, "started collected", 5 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_UNUSED, "unused", 5 * USEC_PER_SEC },
// not context related
{RRD_FLAG_UPDATE_REASON_CHANGED_LINKING, "changed rrd link", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD, "child disconnected", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_DB_ROTATION, "db rotation", 65 * USEC_PER_SEC },
{RRD_FLAG_UPDATE_REASON_UPDATE_RETENTION, "updated retention", 65 * USEC_PER_SEC },
// terminator
{0, NULL, 0 },
};
void rrd_reasons_to_buffer_json_array_items(RRD_FLAGS flags, BUFFER *wb) {
for(int i = 0, added = 0; rrdcontext_reasons[i].name ; i++) {
if (flags & rrdcontext_reasons[i].flag) {
buffer_json_add_array_item_string(wb, rrdcontext_reasons[i].name);
added++;
}
}
}
// ----------------------------------------------------------------------------
// public API
void rrdcontext_updated_rrddim(RRDDIM *rd) {
rrdmetric_from_rrddim(rd);
}
void rrdcontext_removed_rrddim(RRDDIM *rd) {
rrdmetric_rrddim_is_freed(rd);
}
void rrdcontext_updated_rrddim_algorithm(RRDDIM *rd) {
rrdmetric_updated_rrddim_flags(rd);
}
void rrdcontext_updated_rrddim_multiplier(RRDDIM *rd) {
rrdmetric_updated_rrddim_flags(rd);
}
void rrdcontext_updated_rrddim_divisor(RRDDIM *rd) {
rrdmetric_updated_rrddim_flags(rd);
}
void rrdcontext_updated_rrddim_flags(RRDDIM *rd) {
rrdmetric_updated_rrddim_flags(rd);
}
void rrdcontext_collected_rrddim(RRDDIM *rd) {
rrdmetric_collected_rrddim(rd);
}
void rrdcontext_updated_rrdset(RRDSET *st) {
rrdinstance_from_rrdset(st);
}
void rrdcontext_removed_rrdset(RRDSET *st) {
rrdinstance_rrdset_is_freed(st);
}
void rrdcontext_updated_retention_rrdset(RRDSET *st) {
rrdinstance_rrdset_has_updated_retention(st);
}
void rrdcontext_updated_rrdset_name(RRDSET *st) {
rrdinstance_updated_rrdset_name(st);
}
void rrdcontext_updated_rrdset_flags(RRDSET *st) {
rrdinstance_updated_rrdset_flags(st);
}
void rrdcontext_collected_rrdset(RRDSET *st) {
rrdinstance_collected_rrdset(st);
}
void rrdcontext_host_child_connected(RRDHOST *host) {
(void)host;
// no need to do anything here
;
}
usec_t rrdcontext_next_db_rotation_ut = 0;
void rrdcontext_db_rotation(void) {
// called when the db rotates its database
rrdcontext_next_db_rotation_ut = now_realtime_usec() + FULL_RETENTION_SCAN_DELAY_AFTER_DB_ROTATION_SECS * USEC_PER_SEC;
}
int rrdcontext_find_dimension_uuid(RRDSET *st, const char *id, nd_uuid_t *store_uuid) {
if(!st->rrdhost) return 1;
if(!st->context) return 2;
RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item(st->rrdhost->rrdctx.contexts, string2str(st->context));
if(!rca) return 3;
RRDCONTEXT *rc = rrdcontext_acquired_value(rca);
RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_get_and_acquire_item(rc->rrdinstances, string2str(st->id));
if(!ria) {
rrdcontext_release(rca);
return 4;
}
RRDINSTANCE *ri = rrdinstance_acquired_value(ria);
RRDMETRIC_ACQUIRED *rma = (RRDMETRIC_ACQUIRED *)dictionary_get_and_acquire_item(ri->rrdmetrics, id);
if(!rma) {
rrdinstance_release(ria);
rrdcontext_release(rca);
return 5;
}
RRDMETRIC *rm = rrdmetric_acquired_value(rma);
uuid_copy(*store_uuid, rm->uuid);
rrdmetric_release(rma);
rrdinstance_release(ria);
rrdcontext_release(rca);
return 0;
}
int rrdcontext_find_chart_uuid(RRDSET *st, nd_uuid_t *store_uuid) {
if(!st->rrdhost) return 1;
if(!st->context) return 2;
RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item(st->rrdhost->rrdctx.contexts, string2str(st->context));
if(!rca) return 3;
RRDCONTEXT *rc = rrdcontext_acquired_value(rca);
RRDINSTANCE_ACQUIRED *ria = (RRDINSTANCE_ACQUIRED *)dictionary_get_and_acquire_item(rc->rrdinstances, string2str(st->id));
if(!ria) {
rrdcontext_release(rca);
return 4;
}
RRDINSTANCE *ri = rrdinstance_acquired_value(ria);
uuid_copy(*store_uuid, ri->uuid);
rrdinstance_release(ria);
rrdcontext_release(rca);
return 0;
}
void rrdcontext_host_child_disconnected(RRDHOST *host) {
rrdcontext_recalculate_host_retention(host, RRD_FLAG_UPDATE_REASON_DISCONNECTED_CHILD, false);
}
int rrdcontext_foreach_instance_with_rrdset_in_context(RRDHOST *host, const char *context, int (*callback)(RRDSET *st, void *data), void *data) {
if(unlikely(!host || !context || !*context || !callback))
return -1;
RRDCONTEXT_ACQUIRED *rca = (RRDCONTEXT_ACQUIRED *)dictionary_get_and_acquire_item(host->rrdctx.contexts, context);
if(unlikely(!rca)) return -1;
RRDCONTEXT *rc = rrdcontext_acquired_value(rca);
if(unlikely(!rc)) return -1;
int ret = 0;
RRDINSTANCE *ri;
dfe_start_read(rc->rrdinstances, ri) {
if(ri->rrdset) {
int r = callback(ri->rrdset, data);
if(r >= 0) ret += r;
else {
ret = r;
break;
}
}
}
dfe_done(ri);
rrdcontext_release(rca);
return ret;
}
// ----------------------------------------------------------------------------
// ACLK interface
static bool rrdhost_check_our_claim_id(const char *claim_id) {
if(!localhost->aclk_state.claimed_id) return false;
return (strcasecmp(claim_id, localhost->aclk_state.claimed_id) == 0) ? true : false;
}
void rrdcontext_hub_checkpoint_command(void *ptr) {
struct ctxs_checkpoint *cmd = ptr;
if(!rrdhost_check_our_claim_id(cmd->claim_id)) {
nd_log(NDLS_DAEMON, NDLP_WARNING,
"RRDCONTEXT: received checkpoint command for claim_id '%s', node id '%s', "
"but this is not our claim id. Ours '%s', received '%s'. Ignoring command.",
cmd->claim_id, cmd->node_id,
localhost->aclk_state.claimed_id?localhost->aclk_state.claimed_id:"NOT SET",
cmd->claim_id);
return;
}
RRDHOST *host = find_host_by_node_id(cmd->node_id);
if(!host) {
nd_log(NDLS_DAEMON, NDLP_WARNING,
"RRDCONTEXT: received checkpoint command for claim id '%s', node id '%s', "
"but there is no node with such node id here. Ignoring command.",
cmd->claim_id, cmd->node_id);
return;
}
if(rrdhost_flag_check(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS)) {
nd_log(NDLS_DAEMON, NDLP_NOTICE,
"RRDCONTEXT: received checkpoint command for claim id '%s', node id '%s', "
"while node '%s' has an active context streaming.",
cmd->claim_id, cmd->node_id, rrdhost_hostname(host));
// disable it temporarily, so that our worker will not attempt to send messages in parallel
rrdhost_flag_clear(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS);
}
uint64_t our_version_hash = rrdcontext_version_hash(host);
if(cmd->version_hash != our_version_hash) {
nd_log(NDLS_DAEMON, NDLP_NOTICE,
"RRDCONTEXT: received version hash %"PRIu64" for host '%s', does not match our version hash %"PRIu64". "
"Sending snapshot of all contexts.",
cmd->version_hash, rrdhost_hostname(host), our_version_hash);
#ifdef ENABLE_ACLK
// prepare the snapshot
char uuid[UUID_STR_LEN];
uuid_unparse_lower(*host->node_id, uuid);
contexts_snapshot_t bundle = contexts_snapshot_new(cmd->claim_id, uuid, our_version_hash);
// do a deep scan on every metric of the host to make sure all our data are updated
rrdcontext_recalculate_host_retention(host, RRD_FLAG_NONE, false);
// calculate version hash and pack all the messages together in one go
our_version_hash = rrdcontext_version_hash_with_callback(host, rrdcontext_message_send_unsafe, true, bundle);
// update the version
contexts_snapshot_set_version(bundle, our_version_hash);
// send it
aclk_send_contexts_snapshot(bundle);
#endif
}
nd_log(NDLS_DAEMON, NDLP_DEBUG,
"RRDCONTEXT: host '%s' enabling streaming of contexts",
rrdhost_hostname(host));
rrdhost_flag_set(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS);
char node_str[UUID_STR_LEN];
uuid_unparse_lower(*host->node_id, node_str);
nd_log(NDLS_ACCESS, NDLP_DEBUG,
"ACLK REQ [%s (%s)]: STREAM CONTEXTS ENABLED",
node_str, rrdhost_hostname(host));
}
void rrdcontext_hub_stop_streaming_command(void *ptr) {
struct stop_streaming_ctxs *cmd = ptr;
if(!rrdhost_check_our_claim_id(cmd->claim_id)) {
nd_log(NDLS_DAEMON, NDLP_WARNING,
"RRDCONTEXT: received stop streaming command for claim_id '%s', node id '%s', "
"but this is not our claim id. Ours '%s', received '%s'. Ignoring command.",
cmd->claim_id, cmd->node_id,
localhost->aclk_state.claimed_id?localhost->aclk_state.claimed_id:"NOT SET",
cmd->claim_id);
return;
}
RRDHOST *host = find_host_by_node_id(cmd->node_id);
if(!host) {
nd_log(NDLS_DAEMON, NDLP_WARNING,
"RRDCONTEXT: received stop streaming command for claim id '%s', node id '%s', "
"but there is no node with such node id here. Ignoring command.",
cmd->claim_id, cmd->node_id);
return;
}
if(!rrdhost_flag_check(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS)) {
nd_log(NDLS_DAEMON, NDLP_NOTICE,
"RRDCONTEXT: received stop streaming command for claim id '%s', node id '%s', "
"but node '%s' does not have active context streaming. Ignoring command.",
cmd->claim_id, cmd->node_id, rrdhost_hostname(host));
return;
}
nd_log(NDLS_DAEMON, NDLP_DEBUG,
"RRDCONTEXT: host '%s' disabling streaming of contexts",
rrdhost_hostname(host));
rrdhost_flag_clear(host, RRDHOST_FLAG_ACLK_STREAM_CONTEXTS);
}
bool rrdcontext_retention_match(RRDCONTEXT_ACQUIRED *rca, time_t after, time_t before) {
if(unlikely(!rca)) return false;
RRDCONTEXT *rc = rrdcontext_acquired_value(rca);
if(rrd_flag_is_collected(rc))
return query_matches_retention(after, before, rc->first_time_s, before > rc->last_time_s ? before : rc->last_time_s, 1);
else
return query_matches_retention(after, before, rc->first_time_s, rc->last_time_s, 1);
}