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Merge branch 'pratik/otel-phase6-statsd' into pratik/otel-phase7-native-metrics

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# Conflicts:
#	OpenTelemetryPlan/09-data-collection-reference.md
This commit is contained in:
Pratik Mankawde
2026-07-22 13:28:15 +01:00
parent eec3062c9c 30398ce2fe
commit cef7a8b16c
4 changed files with 17 additions and 4 deletions
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9
OpenTelemetryPlan/09-data-collection-reference.md
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@@ -233,11 +233,18 @@ Controlled by `trace_rpc=1` in `[telemetry]` config.
| Span Name | Parent | Source File | Description |
| --------------------- | ------------------ | --------------- | ---------------------------------------------------------- |
| `pathfind.request` | `rpc.command.*` | PathRequest.cpp | `path_find` / `ripple_path_find` RPC entry |
| `pathfind.request` | `rpc.process` | PathFind.cpp | `path_find` RPC entry (`doPathFind`) |
| `pathfind.compute` | `pathfind.request` | PathRequest.cpp | Path computation for one request (`PathRequest::doUpdate`) |
| `pathfind.discover` | `pathfind.compute` | Pathfinder.cpp | Graph exploration (one per RPC call) |
| `pathfind.update_all` | — | PathRequest.cpp | Async recomputation of all active requests at ledger close |
> **Note**: `pathfind.request` parents to `rpc.process`, not `rpc.command.*`.
> `rpc.command.*` is intentionally unscoped: its generic dispatch (`callMethod`)
> also wraps `doRipplePathFind`, whose span is held across a coroutine
> `yield()` — scoping it would risk a wrong-thread scope pop on resume. The
> `pathfind.request → compute → discover` sub-tree nests correctly because those
> handlers run synchronously (no yield) and use `ScopedSpanGuard`.
**Where to find**: Tempo → TraceQL: `{resource.service.name="xrpld" && name=~"pathfind.*"}`
---

4
src/xrpld/app/ledger/detail/BuildLedger.cpp
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@@ -50,7 +50,9 @@ buildLedgerImpl(
ApplyTxs&& applyTxs)
{
using namespace telemetry;
auto buildSpan = SpanGuard::span(TraceCategory::Ledger, seg::ledger, ledger_span::op::build);
// Scoped so tx.apply (created synchronously below during applyTxs on this
// thread) nests under it. buildLedgerImpl runs synchronously with no yield.
auto buildSpan = ScopedSpanGuard(TraceCategory::Ledger, seg::ledger, ledger_span::op::build);
auto built = std::make_shared<Ledger>(*parent, closeTime);

4
src/xrpld/rpc/detail/PathRequest.cpp
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@@ -739,7 +739,9 @@ PathRequest::doUpdate(
{
using namespace std::chrono;
using namespace telemetry;
auto span = SpanGuard::span(
// Scoped so pathfind.discover (created synchronously below via findPaths)
// nests under it. doUpdate does not yield, so scoping is safe.
auto span = ScopedSpanGuard(
TraceCategory::Rpc, pathfind_span::prefix::pathfind, pathfind_span::op::compute);
span.setAttribute(pathfind_span::attr::fast, fast);
span.setAttribute(pathfind_span::attr::destCurrency, to_string(saDstAmount_.asset()).c_str());

4
src/xrpld/rpc/handlers/orderbook/PathFind.cpp
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@@ -19,7 +19,9 @@ json::Value
doPathFind(RPC::JsonContext& context)
{
using namespace telemetry;
auto span = SpanGuard::span(
// Scoped so pathfind.compute/discover (created synchronously below on this
// thread) nest under it. doPathFind does not yield, so scoping is safe.
auto span = ScopedSpanGuard(
TraceCategory::Rpc, pathfind_span::prefix::pathfind, pathfind_span::op::request);
// Addresses are hashed before emission for privacy.
if (auto const& src = context.params[jss::source_account]; src.isString())