[GH] (pekko-grpc/optimize/fast-negotiation-uri-match): Workflow run "Validate and test" failed!

[GitBox <gi...@apache.org>]

The GitHub Actions job "Validate and test" on pekko-grpc.git/optimize/fast-negotiation-uri-match has failed.
Run started by GitHub user He-Pin (triggered by He-Pin).

Head commit for run:
df09e3261d40c06a977ec4991731a5466b439d12 / 虎鸣 <he...@alibaba-inc.com>
Eliminate Option.map lambda allocation in negotiated method

Motivation:
The negotiated method used Option.map with a pattern-matching lambda,
which allocates a new Function1 object on every request. This appeared
as GrpcMarshalling$$$Lambda (48 CPU samples) in async-profiler.

Modification:
Replace Option.map with direct pattern matching on the negotiate
result. The match on Some/Failure/Success is allocation-free (only
type checks and field accesses via destructuring).

Result:
Eliminates one lambda allocation per gRPC request in the negotiated
method hot path.

Tests:
sbt runtime / Test / testOnly GrpcMarshallingSpec
All 7 tests passed.

References: None - performance optimization from flamegraph analysis

Report URL: https://github.com/apache/pekko-grpc/actions/runs/27909358231

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