Sample
go.opentelemetry.io/otel v1.35.0: Baggage validates RFC 7230 token keys and delimiter-free values while resolving duplicate keys with last-value-wins semantics, and CompositeTextMapPropagator coordinates W3C TraceContext and Baggage header extraction and injection
Verified sample for golang go.opentelemetry.io/otel v1.35.0: Baggage validates RFC 7230 token keys and delimiter-free values while resolving duplicate keys…
sha256:7d96ce8c19aad54d6646ca788af8f4fcadf1aeda6a24ca303cfabacc5991341e
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
go linux x64 go go gomod
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-17 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
Case
HOW- Goal
- Baggage validates RFC 7230 token keys and delimiter-free values while resolving duplicate keys with last-value-wins semantics, and CompositeTextMapPropagator coordinates W3C TraceContext and Baggage header extraction and injection
- Symbols
-
- go.opentelemetry.io/otel/baggage.New
- go.opentelemetry.io/otel/baggage.NewMember
- go.opentelemetry.io/otel/baggage.FromContext
- go.opentelemetry.io/otel/baggage.Baggage.DeleteMember
- go.opentelemetry.io/otel/baggage.Baggage.Member
- go.opentelemetry.io/otel/baggage.Baggage.Len
- go.opentelemetry.io/otel/propagation.NewCompositeTextMapPropagator
- go.opentelemetry.io/otel/propagation.TraceContext
- go.opentelemetry.io/otel/propagation.Baggage
- go.opentelemetry.io/otel/propagation.HeaderCarrier
- Environment
- go
- Created
- 2026-08-17T06:53:08Z
Contract
- Baggage.New applies last-value-wins deduplication when duplicate member keys are provided, while NewMember strictly enforces RFC 7230 token syntax on keys and rejects unencoded delimiters in values
- DeleteMember produces a new immutable Baggage with the target key removed without mutating the original Baggage
- CompositeTextMapPropagator combines TraceContext and Baggage to extract valid SpanContext and percent-decoded Baggage from W3C HTTP headers
- CompositeTextMapPropagator injects traceparent, tracestate, and percent-encoded baggage headers into a carrier
- Extracting a malformed traceparent header yields an invalid SpanContext without panicking
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- otel_test.go