Conflict in src/libxrpl/telemetry/SpanGuard.cpp: both sides added a different
include in the same alphabetical slot — phase-4 added <initializer_list>, the
incoming std::format change added <format>. Both are required, so both are
kept in sorted order.
SpanGuard::span() and freshRoot() joined the prefix and suffix by hand with
reserve() + three append() calls. std::format expresses the same join in one
line; libstdc++ has shipped <format> since GCC 13 and the project floor is
GCC 15.2 (BUILD.md), so it is available on every supported compiler.
Both callers are noexcept and std::format can throw (std::bad_alloc, or
std::format_error on a malformed spec), so an escaping exception would
terminate the process. The call is wrapped in a joinSpanName() helper that
catches and returns std::nullopt; the caller then returns a null guard, which
is the same degrade-to-no-op path already taken when telemetry is disabled.
Telemetry must never bring the node down.
One helper rather than a try/catch at each site keeps both call sites a single
line and puts the exception-safety requirement in one documented place.
Addresses a review comment on PR #6437.
M1: ~PendingTraceId now increments a process-wide atomic counter when a
pinned deterministic trace_id is destroyed unconsumed, so the silent drop
stays observable in release builds where the existing XRPL_ASSERT is a
no-op. Exposed via unconsumedDeterministicIdDrops() for a future metric.
The deterministic trace_id bytes, the GenerateTraceId() consume logic, and
the unconditional reset() are all unchanged.
M2: tighten the Doxygen on SpanGuard::childSpan(std::string_view) to state
it parents to the current ambient context of this store (meaningful only
when a scope/ScopedSpanGuard/ScopedActivation is active) and to point
callers at childSpan(name, ctx) for explicit cross-store parenting.
Doc-only; no behavior change.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Brings coroutine-aware context storage + tx/consensus worker-body activation.
Resolved: Telemetry.cpp keeps both meterProvider_ (phase-7) and contextStorage_
(coro-aware); doc-09 keeps phase-7 structure and applies the pathfind.request →
rpc.command.<name> correction to phase-7's own PathFind section.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Brings coroutine-aware context storage, scoped rpc.command, coro-store-swap
tests, and the scoped pathfind.request forward.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Brings coroutine-aware OTel context storage forward: CoroAwareContextStorage,
its install in Telemetry, ScopedSpanGuard same-store assertion, and the
non-owning ScopedActivation helper.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add SpanGuard::activate() returning a ScopedActivation RAII helper that
activates an already-owned span (from a thread-free SpanGuard) as the
current context WITHOUT taking ownership. The activation pushes the span
onto the current LocalValue context store on construction and pops it on
destruction; it never ends the span (its owning SpanGuard does).
This lets a job-handoff span be made ambient for the duration of a
synchronous, non-yielding worker body so log lines there carry the
span's trace_id. Non-copyable and non-movable, mirroring ScopedSpanGuard.
owner is captured after the Scope push via declaration-order member
initialization (scope declared before owner), matching the A3
capture-after-materialization invariant. A #else no-op stub keeps the
API zero-overhead when telemetry is compiled out.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Coroutine-aware storage lets a scope resume on another worker within the same
coroutine store; store-identity is the correct pop-safety invariant. Same-store
equals same-thread for synchronous code, so no safety is lost.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Install CoroAwareContextStorage as the process-wide OTel runtime context
storage in TelemetryImpl::start(), before SetTracerProvider and before any
span is created, so the ambient context follows JobQueue coroutines across
yield/resume. Hold it in a member for the process lifetime; not reset in
stop() because resetting while spans may exist is SDK undefined behaviour.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Backs the OTel active-context stack with xrpl::LocalValue so the ambient
context follows a JobQueue::Coro across yield/resume. Not yet installed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
