The reference docs had drifted from the code in ways that break the reader
rather than merely misinform: PromQL examples that return no data, a rollback
flag that is a no-op, a sampling knob that does not exist, and two span parents
that moved. Code is treated as the truth throughout; where the code is the
defective side, the doc now records it as a known issue instead of describing
the bug as intent.
Renames the docs missed: histogram names gain the exporter's unit suffix
(ios_latency_milliseconds_bucket and four siblings), ledger_history_mismatch
gains _total, the StatsD-era quantile label gives way to le buckets,
rpc.request becomes rpc.http_request, traces_spanmetrics_calls_total becomes
span_calls_total, and the nine dotted xrpl.* span attributes are recorded as
renamed rather than left as live keys.
Re-parenting: consensus.update_positions and consensus.check are children of
consensus.establish, not of consensus.round.
Units and labels: state_accounting_*_duration is microseconds, not seconds;
cache_metrics label values are case-sensitive; object_count carries demangled
C++ type names. Nodestore read and write latency stays microseconds -- the
nanosecond accumulator change did not move the exported unit.
Adds what shipped but was undocumented: the ledger.acquire span, seven
consensus.round events, twelve span attributes, node_writes_duration_us, the
7-day validation-agreement window, the TxQ admission and reduce-relay metric
families, metrics_endpoint, and the phase-10 validation workflow.
Corrects claims that never held: 10% head sampling (it is fixed at 100%),
configurable redaction (it is unconditional), -DXRPL_ENABLE_TELEMETRY=OFF
(the flag is -Dtelemetry=OFF, default ON), FindOpenTelemetry.cmake and the
xrpl_telemetry target (neither exists), Promtail and a StatsD exporter in the
pipeline (neither exists), and Loki stream selection on job= (only
service_name is a stream label).
Phase 9 is marked complete, its provisioned alerting is attributed to the
branch that shipped it, and Phase 11 stays at zero except the one prerequisite
its code closes. Counts are reconciled repo-wide: 41 emitted span families,
15 dashboards on disk with 14 asserted, 13 alert rules in 5 groups.
Hardens the gate that let this drift through: Rule E of the naming check now
covers the reference docs, its allow-dotted marker is key-scoped and warns on
stale or empty use, a missing checked file is reported instead of silently
skipped, the test suite runs in CI, and doc paths trigger the check.
C++ and CMake changes are comment-only: three MetricsRegistry instrument names,
eight OTelCollector claims of a metric-name prefix that formatName never adds,
and the telemetry option's inverted default.
The fetch and store duration counters converted each sample to
microseconds before adding it, so any backend call finishing in under a
microsecond contributed zero. A warm nudb read answers in a few hundred
nanoseconds, so on fast hardware every read floored and the totals stayed
at zero no matter how many reads happened -- the same loss of resolution
the microsecond report was introduced to avoid, one decade lower.
Both accumulators now hold nanoseconds, the clock's own resolution, and
convert once in getFetchDurationUs() and getStoreDurationUs(). The public
accessors, the node_reads_duration_us and node_writes_duration_us JSON
fields, and the metrics that read them all keep microseconds, so nothing
downstream changes unit. storeDurationStats() takes the raw duration
instead of a pre-converted integer so no caller can round early, and
updateFetchMetrics() scales its microsecond input to match.
FetchReport::elapsed stays microseconds: it carries one fetch, not a
total, and that is the unit it declares. The reported sum is therefore the
accumulated total minus a sub-microsecond remainder per fetch, so the two
tests that asserted exact equality between them now assert that bound.
Both had assertions that depended on how fast the host reads; the bound
holds on any hardware.
develop renamed xrpl::Resource to xrpl::resource. MetricsRegistry.cpp
declared `namespace resource = opentelemetry::sdk::resource` at file
scope, but both use sites are inside namespace xrpl::telemetry, where
inner-scope lookup finds the enclosing xrpl::resource first and never
reaches the alias. That namespace has no ResourceAttributes or Resource,
so the build failed on all four platforms:
error: no type named 'ResourceAttributes' in namespace 'xrpl::resource'
error: no member named 'Create' in namespace 'xrpl::resource';
did you mean 'creat'?
Rename the alias to otel_resource. Moving it inside xrpl::telemetry would
also compile, but only by shadowing xrpl::resource -- a reader at the use
site still could not tell which namespace `resource::` meant, and a later
using-directive would reintroduce the ambiguity. A distinct name removes
the collision by construction and matches the metric_sdk / otlp_http
aliases already in this file.
09-data-collection-reference.md: keep phase-9's structure, which relocated
the §2a call-site-metrics content into §5b (3860c93db2). The incoming §2a
block is superseded; its snake_case namespace fix is already applied to
phase-9's copy of the same text.
These changes were developed on the phase-10 branch but belong to content this
branch and its upstreams introduced. Carrying them on phase-10 made its PR diff
report churn in files phase-10 does not own, and left each PR claiming a scope
that did not match its contents.
Moved here from phase-10 (identical content, no functional change):
- Dashboards: all 14 existing boards plus the new log-derived-insights board.
- Docs: telemetry-runbook.md (minus the workload/benchmark sections, which
describe phase-10 tooling) and the new telemetry-glossary.md.
- Grafana Cloud + Alloy export path: collector config, compose override, the
two .env examples and alloy/config.alloy.
- Local stack: otel-collector-config.yaml gains sub-millisecond and
second-scale spanmetrics buckets, pins unit=ms, and promotes
close_time_correct; integration-test.sh and TESTING.md follow.
- Node configs: exported_instance -> service_instance_id in comments; the
mainnet sample now logs at warning to bound log volume.
- Metrics code: Telemetry.cpp builds the metrics pipeline in the constructor
via initMetrics() so the global MeterProvider is published before any
subsystem creates a beast::insight instrument, and the histogram view keeps
each instrument's own name instead of collapsing them under one series.
MetricsRegistry gains a last_close_time gauge and skips negative job-queue
durations. OTelCollector drops an unused accessor.
- Naming CI: xrpl_work_item joins EXTERNAL_INFRA_LABELS and Rule E accepts the
dotted perf-iac resource-attribute form. This must travel with the
dashboards and runbook that reference those labels, or the rules fail.
- Doxygen input glob no longer recurses dot-directories.
Sections describing phase-10 tooling stay on phase-10 and keep their
"Future Enhancement" / "Planned, not yet implemented" markers here; phase-10
removes those markers when it lands the tooling.
