Sample
go.opentelemetry.io/otel v1.34.0: Unconfigured global text map propagator silently drops distributed trace headers and severs multi-service spans without explicit SetTextMapPropagator
Verified sample for golang go.opentelemetry.io/otel v1.34.0: Unconfigured global text map propagator silently drops distributed trace headers and severs…
sha256:4e76aea37a5182cdc0ec3afe2892492d79a816a703ab5e9e6186f3a714631bfd
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
- 1
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 |
2026-08-16 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | FAIL | compile:SKIPPED · contract:FAIL · load:SKIPPED · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
Case
HOW- Goal
- Unconfigured global text map propagator silently drops distributed trace headers and severs multi-service spans without explicit SetTextMapPropagator
- Symbols
-
- go.opentelemetry.io/otel.SetTextMapPropagator
- go.opentelemetry.io/otel.GetTextMapPropagator
- go.opentelemetry.io/otel/propagation.TraceContext
- go.opentelemetry.io/otel/propagation.Baggage
- go.opentelemetry.io/otel/sdk/trace.ParentBased
- Environment
- go
- Created
- 2026-08-16T07:28:53Z
Contract
- assert unconfigured global text map propagator silently injects zero headers into carrier
- assert unconfigured global text map propagator silently ignores incoming traceparent header and returns unlinked context
- assert downstream span created from unconfigured extraction context generates a disconnected new trace ID
- assert explicitly configured TraceContext and Baggage propagator injects W3C headers
- assert configured propagator extracts remote span context with matching TraceID and remote flag
- assert downstream span links to upstream parent TraceID and parent SpanID when propagator is configured
- assert ParentBased sampler preserves sampling decision for remote sampled parent context
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- propagator_test.go