Sample
go.opentelemetry.io/otel/sdk v1.37.0: TracerProvider defaults to ParentBased(AlwaysSample()) when WithSampler is unset, embedding specification sampler names AlwaysOnSampler and AlwaysOffSampler in its description
Verified sample for golang go.opentelemetry.io/otel/sdk v1.37.0: TracerProvider defaults to ParentBased(AlwaysSample()) when WithSampler is unset, embedding…
sha256:5f70d2ba9888e84e798c0e4450c4dc578490ff9c7590558fccf61ea53919fef3
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
- TracerProvider defaults to ParentBased(AlwaysSample()) when WithSampler is unset, embedding specification sampler names AlwaysOnSampler and AlwaysOffSampler in its description
- Packages
- Symbols
-
- go.opentelemetry.io/otel/sdk/trace.NewTracerProvider
- go.opentelemetry.io/otel/sdk/trace.ParentBased
- go.opentelemetry.io/otel/sdk/trace.AlwaysSample
- go.opentelemetry.io/otel/sdk/trace.NeverSample
- Environment
- go
- Created
- 2026-08-17T06:41:52Z
Contract
- AlwaysSample().Description() returns "AlwaysOnSampler" and NeverSample().Description() returns "AlwaysOffSampler" using OpenTelemetry specification names rather than Go constructor names
- ParentBased(AlwaysSample()).Description() composes the spec names into ParentBased{root:AlwaysOnSampler,remoteParentSampled:AlwaysOnSampler,remoteParentNotSampled:AlwaysOffSampler,localParentSampled:AlwaysOnSampler,localParentNotSampled:AlwaysOffSampler}
- NewTracerProvider() without WithSampler samples root spans by default
- NewTracerProvider() without WithSampler honors remote unsampled parent contexts by dropping child spans
- NewTracerProvider() without WithSampler honors remote sampled parent contexts by sampling child spans
Files
- NOTES.md
- csx.json
- defaultsampler_test.go
- go.mod
- go.sum