Files
rippled/docker/telemetry/workload/expected_metrics.json
Pratik Mankawde 41b818b55b feat(telemetry): join a ledger's spans into one trace, add round histogram (WP-B3)
A slow fresh-sync ledger produced spans scattered across threads with no
way to relate them. They now share a trace id derived from the ledger's own
hash, the one value every participating site already holds, so nothing new
is plumbed across threads. This is the pattern the transaction pipeline
already uses for its tx id.

Joined: ledger.validate, ledger.store, and a new
consensus.validation.accept recorded when a trusted validation arrives. In
Tempo, searching one ledger hash returns them together, so an operator can
tell whether the ledger was slow to arrive, slow to be accepted, or slow to
be stored. They are siblings rather than a chain because the accept gate is
entered from three different threads, so no fixed parent order exists.

consensus.validation.accept also records why an arriving validation did or
did not advance the gate, which makes "validations arrive but are all
rejected" visible for the first time.

consensus_round_duration_ms turns the existing round-time span attribute
into a histogram, so a fleet trend needs a metric query rather than raw
trace inspection. An explicit bucket view is required, not optional: the
SDK default tops out at ten seconds while consensus abandons a round at two
minutes, so slow rounds would all fall in one bucket and every quantile
would read exactly ten seconds. Cost is one record per round.

Record layer: the histogram is native and needs no collector change. The
two new bounded attributes are added as span-metric dimensions to both
collector configs. The ledger hash stays out of them, since a per-ledger
dimension mints a series per ledger; it is indexed in Tempo as the join key.

The ledger.acquire span is not joined yet, because that file was being
changed concurrently. It is registered as an optional member of the join
group so nothing fails, and switching it is a one-line follow-up.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-25 20:19:25 +01:00

218 lines
21 KiB
JSON

{
"description": "Expected metric inventory for xrpld telemetry validation. Metric names have no prefix (the xrpld_ prefix was removed). beast::insight metrics are lowercased by formatName. Sourced from the live Grafana dashboards and MetricsRegistry.cpp.",
"spanmetrics": {
"description": "SpanMetrics-derived RED metrics from the OTel Collector spanmetrics connector.",
"metrics": [
"span_calls_total",
"span_duration_milliseconds_bucket",
"span_duration_milliseconds_count",
"span_duration_milliseconds_sum"
],
"required_labels": [
"span_name",
"status_code",
"service_name",
"span_kind"
],
"dimension_labels": [
"command",
"rpc_status",
"consensus_mode",
"local",
"proposal_trusted",
"validation_trusted",
"tx_type",
"ter_result",
"stage",
"txq_status",
"close_time_correct",
"consensus_state",
"suppressed"
],
"_dimension_labels_note": "Bare label names as configured in otel-collector-config.yaml spanmetrics dimensions. Informational only (not asserted by the validator)."
},
"statsd_gauges": {
"description": "beast::insight gauges exported via OTLP/HTTP to the collector (server=otel).",
"metrics": [
"ledgermaster_validated_ledger_age",
"ledgermaster_published_ledger_age",
"state_accounting_full_duration",
"peer_finder_active_inbound_peers",
"peer_finder_active_outbound_peers",
"jobq_job_count"
]
},
"statsd_counters": {
"description": "beast::insight counters exported via OTLP/HTTP. The OTel Prometheus exporter appends _total to monotonic counters.",
"metrics": ["rpc_requests_total", "ledger_fetches_total"]
},
"overlay_traffic": {
"description": "Overlay traffic metrics (subset \u2014 full list has 45+ categories).",
"metrics": [
"total_bytes_in",
"total_bytes_out",
"total_messages_in",
"total_messages_out"
]
},
"phase9_nodestore": {
"description": "Phase 9 NodeStore I/O observable gauge (MetricsRegistry via OTLP). Single metric with 'metric' label distinguishing sub-metrics.",
"metrics": ["nodestore_state"]
},
"phase9_cache": {
"description": "Phase 9 cache hit rate observable gauge (MetricsRegistry via OTLP). Single metric with 'metric' label.",
"metrics": ["cache_metrics"]
},
"phase9_txq": {
"description": "Phase 9 transaction queue observable gauge (MetricsRegistry via OTLP). Single metric with 'metric' label.",
"metrics": ["txq_metrics"]
},
"phase9_rpc_method": {
"description": "Phase 9 per-RPC-method counters (MetricsRegistry via OTLP).",
"metrics": ["rpc_method_started_total"]
},
"rpc_in_flight": {
"description": "In-flight RPC gauge via the XRPL_METRIC_UPDOWN_ADD call-site macro (PerfLogImp.cpp, +1 rpcStart / -1 rpcEnd). UpDownCounter: no _total suffix.",
"metrics": ["rpc_in_flight_requests"]
},
"phase9_objects": {
"description": "Phase 9 counted object instances observable gauge (MetricsRegistry via OTLP).",
"metrics": ["object_count"]
},
"phase9_load": {
"description": "Phase 9 fee escalation and load factor observable gauge (MetricsRegistry via OTLP).",
"metrics": ["load_factor_metrics"]
},
"parity_validation_agreement": {
"description": "External dashboard parity: validation agreement percentages (MetricsRegistry).",
"metrics": [
"validation_agreement{metric=\"agreement_pct_1h\"}",
"validation_agreement{metric=\"agreement_pct_24h\"}"
]
},
"parity_validator_health": {
"description": "External dashboard parity: validator health indicators (MetricsRegistry).",
"metrics": [
"validator_health{metric=\"amendment_blocked\"}",
"validator_health{metric=\"unl_expiry_days\"}"
]
},
"parity_peer_quality": {
"description": "External dashboard parity: peer quality metrics (MetricsRegistry).",
"metrics": [
"peer_quality{metric=\"peer_latency_p90_ms\"}",
"peer_quality{metric=\"peers_insane_count\"}"
]
},
"parity_ledger_economy": {
"description": "External dashboard parity: ledger economy metrics (MetricsRegistry).",
"metrics": [
"ledger_economy{metric=\"base_fee_xrp\"}",
"ledger_economy{metric=\"transaction_rate\"}"
]
},
"parity_state_tracking": {
"description": "External dashboard parity: server state tracking (MetricsRegistry).",
"metrics": ["state_tracking{metric=\"state_value\"}"]
},
"parity_counters": {
"description": "External dashboard parity: monotonic counters (MetricsRegistry).",
"metrics": [
"ledgers_closed_total",
"validations_sent_total",
"state_changes_total"
]
},
"parity_storage": {
"description": "External dashboard parity: storage detail metrics (MetricsRegistry).",
"metrics": ["storage_detail{metric=\"nudb_bytes\"}"]
},
"sync_diagnostics": {
"description": "Fresh-node sync diagnostics (native metrics). Bootstrap (Domain 0) and acquire-pipeline signals rendered by the ledger-sync-health dashboard. Names are appended one per signal. Histograms are listed by their Prometheus _bucket series (the bare instrument name is not a series). The two observable gauges carry an inline metric= selector so the specific sub-series is asserted, matching the parity_* groups.",
"metrics": [
"dns_resolve_total",
"dns_resolve_latency_ms_bucket",
"overlay_connect_total",
"overlay_dial_latency_ms_bucket",
"handshake_negotiation_fail_total",
"unl_fetch_total",
"unl_quorum{metric=\"trusted_keys\"}",
"unl_quorum{metric=\"quorum\"}",
"clock_close_offset_seconds{metric=\"offset\"}",
"sync_state{metric=\"initial_full_duration_us\"}",
"sync_state{metric=\"network_ledger_gate\"}",
"sync_state{metric=\"server_stall_seconds\"}",
"sync_state{metric=\"ledgers_behind\"}",
"server_stall_events_total",
"state_changes_total{from!=\"\",to!=\"\"}",
"sync_acquire{metric=\"missing_state_nodes_max\"}",
"sync_acquire{metric=\"missing_tx_nodes_max\"}",
"sync_acquire{metric=\"received_data_depth\"}",
"sync_acquire{metric=\"in_flight\"}",
"shamap_cache_hit_rate{metric=\"treenode\"}",
"jobq_backlog{metric=\"waiting\",job_type=\"ledgerData\"}",
"jobq_backlog{metric=\"running\",job_type=\"ledgerData\"}",
"jobq_backlog{metric=\"deferred\",job_type=\"ledgerData\"}",
"jobq_backlog{metric=\"deferred\",job_type=\"ledgerRequest\"}",
"jobq_saturation{metric=\"running_tasks\"}",
"jobq_saturation{metric=\"worker_threads\"}",
"jobq_saturation{metric=\"total_waiting\"}",
"peer_ledger_supply{metric=\"peers_reporting\"}",
"peer_ledger_supply{metric=\"peers_serving_validated\"}",
"peer_ledger_supply{metric=\"peers_serving_next\"}",
"peer_ledger_supply{metric=\"supply_min_seq\"}",
"peer_ledger_supply{metric=\"supply_max_seq\"}",
"peerfinder_slot_census{metric=\"out_active\"}",
"peerfinder_slot_census{metric=\"out_max\"}",
"peerfinder_slot_census{metric=\"in_active\"}",
"peerfinder_slot_census{metric=\"in_max\"}",
"peerfinder_slot_census{metric=\"connecting\"}",
"peerfinder_slot_census{metric=\"fixed_configured\"}",
"peerfinder_slot_census{metric=\"fixed_active\"}",
"peerfinder_slot_census{metric=\"bootcache\"}",
"peerfinder_slot_census{metric=\"livecache\"}",
"amendment_block{metric=\"warned\"}",
"amendment_block{metric=\"seconds_to_block\"}",
"peer_accept_total",
"nodestore_latency{metric=\"write_count\"}",
"nodestore_latency{metric=\"read_count\"}",
"nodestore_latency{metric=\"read_mean_us\"}",
"ledger_quorum_publish{metric=\"trusted_validation_tally\"}",
"ledger_quorum_publish{metric=\"quorum_target\"}",
"ledger_quorum_publish{metric=\"time_to_first_validated_us\"}",
"ledger_quorum_publish{metric=\"publish_lag\"}",
"ledger_quorum_shortfall_total{stage=\"pre_accept\"}",
"consensus_round_duration_ms_bucket",
"consensus_round_duration_ms_count"
],
"_acquire_note": "The four sync_acquire sub-series and shamap_cache_hit_rate are unconditional: both are observable gauges whose callbacks observe every series on each collection tick, so each is present even when the value is 0 (an idle node reports in_flight=0 and missing_state_nodes_max=0, and a cold cache reports a 0.0 hit rate). Absence, not a zero, is the regression. The three WP-A3 counters (sync_acquire_source_total, sync_addnode_total, sync_acquire_no_progress_total) are deliberately NOT asserted here: all three are emitted only from InboundLedger, which runs only when a node must fetch a ledger it lacks. expected_spans.json already marks the ledger.acquire span optional for exactly this reason (\"A healthy local cluster rarely back-fills history\"), and the metric validator has no per-metric optional flag, so listing them would fail the harness red on a healthy run. They are covered by exact-value unit tests in src/tests/libxrpl/telemetry/MetricMacros.cpp and by the ledger-sync-health panels; add them here only alongside a harness step that forces a real acquire (e.g. starting a node against an existing ledger history).",
"_jobq_note": "The jobq_backlog and jobq_saturation series are unconditional: both are observable gauges whose callbacks iterate EVERY registered JobType (jobData_ is populated from JobTypes at JobQueue construction) and observe all three fields on each collection tick, so a series exists even when the value is 0. That is why an idle-but-registered type like ledgerData is safe to assert by name here \u2014 a fresh harness node that never defers a single job still reports jobq_backlog{metric=\"deferred\",job_type=\"ledgerData\"} = 0, and absence, not the zero, is the regression. Two job_type values are asserted (ledgerData and ledgerRequest) because they are the sync-critical types capped at concurrency 3 in JobTypes.h, so they are the ones whose deferred series must never silently vanish. Only deferred is asserted for ledgerRequest to keep the list short: the three-field fan-out is already proven by ledgerData. worker_threads is asserted because it is the denominator of the dashboard saturation ratio, and it is always at least 1 (the JobQueue ctor gives standalone mode exactly one worker), so a zero or missing reading there means the accessor regressed rather than the node being idle.",
"_conditional_note": "handshake_negotiation_fail_total and unl_fetch_total are conditional under the local harness: the first only exists once a handshake is rejected, and the second needs a [validator_list_sites] entry (run-full-validation.sh generates a static [validators] file instead). The validator has no per-metric optional flag, so if either reports 0 series in a harness run, move it out of this group rather than weakening the check.",
"_sync_state_note": "The four sync_state sub-series are unconditional: the gauge observes all four on every collection tick, so each is present as a series even when its value is 0 (a node that never reached FULL reports initial_full_duration_us=0, and a healthy node reports server_stall_seconds=0). The check asserts series presence, not a non-zero value, which is exactly right here \u2014 a zero is a meaningful reading for these signals, and absence is the regression. server_stall_events_total is likewise always present because the observable counter reports the tally (0 or more) every tick. state_changes_total is asserted here with a from!=\"\",to!=\"\" selector rather than bare (parity_counters already asserts the bare name): the selector is what proves the WP-A2 {from,to} label dimension actually reached Prometheus, so a regression to the old unlabelled counter fails this check instead of silently passing on the bare name. It needs at least one real mode transition, which any node reaching connected/syncing produces during startup.",
"_a7_note": "WP-A7 adds three observable gauges and four counters. The 16 gauge sub-series (peer_ledger_supply, peerfinder_slot_census, amendment_block) are unconditional and asserted individually: each callback in MetricsRegistry.cpp calls observe() for every field on every collection tick with no early return between them, so the series exists whatever the value. That includes the two sentinel readings \u2014 a node whose peers have advertised nothing reports peer_ledger_supply{metric=\"supply_min_seq\"} = 0 meaning unknown, and a node with no pending amendment reports amendment_block{metric=\"seconds_to_block\"} = -1 meaning healthy. Absence, not the sentinel, is the regression. Of the four counters only peer_accept_total is asserted: run-full-validation.sh gives every node a [port_peer] on 0.0.0.0 and lists the other four nodes in [ips], so all 5 nodes dial each other and each one is also dialled, which means OverlayImpl::onHandoff runs and reports outcome=accepted (or slot_refused/no_slot on the duplicate half of each mutual dial) on every node. It is asserted bare rather than with an outcome= selector because which outcome a given node records depends on dial ordering, which the harness does not control. The other three counters are deliberately NOT asserted. peer_disconnect_total is emitted only from PeerImp::close, and a healthy 5-node localhost cluster holds its 4 fixed peers for the whole run: the timer-driven reasons need maxUnknownTime (600 s) or maxDivergedTime (300 s) to elapse (Config.h) while the full-validation profile totals well under that, and the shutdown reasons only fire during teardown, which happens in run-full-validation.sh after Step 5 has already scraped. serve_refused_total needs a peer to ask this node for a ledger, tx set or object it cannot serve \u2014 on a cluster where every node has the same complete history from genesis, getLedger()/getTxSet() succeed and the send queues never approach Tuning::kDropSendQueue. ledger_jump_total needs NetworkOPsImp::switchLastClosedLedger, reached only when consensus reports an LCL this node did not build on; a healthy 5-node cluster agrees every round, so it never jumps. The metric validator has no per-metric optional flag, so listing any of the three would fail the harness red on a healthy run \u2014 the same reasoning _acquire_note applies to the WP-A3 InboundLedger counters. All four counters are covered by exact-value unit tests in src/tests/libxrpl/telemetry/MetricMacros.cpp and rendered by the ledger-sync-health panels Peer Disconnects by Reason, Ledger/Object Serve Refusals and Byzantine Ledger Jumps. To make them assertable the harness would need a fault-injection step: kill one node mid-run and re-scrape before teardown (peer_disconnect_total, reason=read_error/graceful), request a ledger sequence outside the cluster's history or drive a node past its send-queue limit (serve_refused_total), and start a node on a divergent chain tip or partition the cluster and heal it (ledger_jump_total).",
"_a6_note": "WP-A6 adds one observable gauge (nodestore_latency) and two counters (ledger_replay_fallback_total, ledger_replay_outcome_total). Only three of the four gauge sub-series are asserted. write_count and read_count are unconditional: the callback observes both on every collection tick with no early return before them, so a series exists whatever the value, and a node that has written nothing reports write_count=0 rather than dropping the series. read_mean_us is safe because any node that has opened a ledger has already fetched objects, so the fetch duration total is non-zero. write_mean_us is deliberately NOT asserted: the mean is emitted only when the store-duration total is non-zero, and that total is fed by Database::recordStoreDuration(), which today is called only from Database::importInternal -- the [import_db] admin path. Database::store() is pure virtual and the two concrete runtime overrides (DatabaseNodeImp::store, DatabaseRotatingImp::store) do not time themselves yet, so an ordinary harness node produces write_count but no write_mean_us. Asserting it would ship a permanently red CI check for a known, documented gap; the omission is the honest encoding of that gap. The two replay counters are likewise NOT asserted, for the same reason _acquire_note gives for the WP-A3 InboundLedger counters: both are emitted only from the ledger-replay path, which requires the [ledger_replay] config stanza AND a real historical back-fill against peers that support the LedgerReplay protocol feature. run-full-validation.sh starts a fresh local cluster with no history to back-fill, so no replay task is ever created and neither counter can produce a series. All three unasserted signals are covered by exact-value unit tests in src/tests/libxrpl/telemetry/MetricMacros.cpp and rendered by the ledger-sync-health panels NodeStore Write vs Read Latency, Replay Fallback to Full Acquire and Replay Outcomes. To make them assertable the harness would need to enable [ledger_replay] and start a node against an existing ledger history so it back-fills through the replay path, and to time the two concrete store overrides.",
"_a5_note": "WP-A5 adds one observable gauge (ledger_quorum_publish) and one counter (ledger_quorum_shortfall_total). All four gauge sub-series are asserted and are unconditional: registerLedgerQuorumPublishGauge's callback in MetricsRegistry.cpp calls observe() for every field on every collection tick with no early return between them, and each accessor is a plain relaxed atomic load that always returns a value, so the series exists whatever the reading. That deliberately includes the three diagnostic zeros: a node that has never had a gate evaluated reports trusted_validation_tally=0 and quorum_target=0, one that has never fully validated reports time_to_first_validated_us=0, and one that is caught up reports publish_lag=0. Absence, not the zero, is the regression -- the same reasoning _sync_state_note gives for initial_full_duration_us. Note the sentinel: when the trusted list disables quorum entirely, getNeededValidations() returns SIZE_MAX and LedgerMaster reports quorum_target as int64 max rather than letting the cast wrap to -1, so the target reads far above any tally instead of inverting the comparison (the same fix as the unl_quorum gauge). ledger_quorum_shortfall_total IS asserted, which differs from the WP-A3/A6/A7 counters, and the reason is that this counter does not need a fault to fire. RCLConsensus::Adaptor::doAccept issues this node's own validation and then calls ledgerMaster_.consensusBuilt immediately (RCLConsensus.cpp), which calls checkAccept on the freshly built ledger (LedgerMaster.cpp) BEFORE the peers' validations for that same ledger have arrived. With the harness's 5 validators the quorum is max(ceil(5*0.8), ceil(5*0.6)) = 4 (ValidatorList::calculateQuorum), so that first evaluation of each round tallies short of 4 and takes the shortfall early return; the gate is then re-entered from RCLValidations handleNewValidation as each trusted validation arrives and eventually passes. A HEALTHY 5-node cluster therefore emits this counter every round, which is why it is safe to assert on a clean run -- unlike peer_disconnect_total or ledger_replay_fallback_total, it needs no fault injection, no [ledger_replay] stanza and no historical back-fill. The stage=\"pre_accept\" selector is asserted rather than the bare name so that the label dimension is proven to have reached Prometheus, matching the state_changes_total{from,to} pattern. Consequence for readers of the panels: a non-zero rate on Pre-Accept Quorum Shortfall Rate is NOT by itself a fault, and the panel description says so; the fault signature is that rate climbing well above the ledger-close rate while the tally on Trusted Validations vs Quorum Target stays flat below its target. If a future harness change makes the cluster single-node or standalone this assertion must move to a note: standalone_ short-circuits consensusBuilt before checkAccept, and getNeededValidations() returns 0 in standalone mode, so the gate can never report a shortfall.",
"_round_histogram_note": "consensus_round_duration_ms is a native OTel histogram recorded once per consensus round in RCLConsensus, so it needs no collector configuration -- it rides the existing OTLP -> Prometheus path. It is asserted by its Prometheus _bucket and _count series because the bare instrument name is not a series. Both are unconditional on any running cluster: every node closes ledgers continuously, so a round completes within the harness window and the histogram is populated. Absence means the record site or the explicit-bucket view regressed, not that the node was idle. The instrument carries NO labels, so exactly one series exists per node and per bucket boundary."
},
"grafana_dashboards": {
"description": "All Grafana dashboards that must render data (UIDs as provisioned on disk under docker/telemetry/grafana/dashboards/).",
"uids": [
"rpc-performance",
"transaction-overview",
"consensus-health",
"ledger-operations",
"peer-network",
"peer-quality",
"fee-market",
"job-queue",
"validator-health",
"node-health",
"network-traffic",
"rpc-pathfinding",
"overlay-traffic-detail",
"ledger-data-sync",
"ledger-sync-health"
]
}
}