CodeSampleX

Sample

go.opentelemetry.io/otel/sdk 1.45.0: Handle recursive attribute value length truncation across slice and map types, last-value-wins map deduplication, and spec-compliant sampler descriptions in OpenTelemetry Go SDK >= v1.45.0

Verified sample for golang go.opentelemetry.io/otel/sdk 1.45.0: Handle recursive attribute value length truncation across slice and map types…

sha256:19df5703d8dc81fc82d005c9a1da5e4e2cbf15e79f3bda3895e0373c83079fce

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 go

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 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-18

Case

HOW
Goal
Handle recursive attribute value length truncation across slice and map types, last-value-wins map deduplication, and spec-compliant sampler descriptions in OpenTelemetry Go SDK >= v1.45.0
Packages
Symbols
  • go.opentelemetry.io/otel/sdk/trace.SpanLimits
  • go.opentelemetry.io/otel/sdk/trace.TraceIDRatioBased
  • go.opentelemetry.io/otel/sdk/trace.ParentBased
  • go.opentelemetry.io/otel/sdk/resource.Merge
  • go.opentelemetry.io/otel/sdk/resource.NewWithAttributes
Environment
go
Created
2026-08-16T07:28:26Z

Contract

  1. AttributeValueLengthLimit in SpanLimits recursively truncates string values inside attribute.SLICE, attribute.MAP, and attribute.BYTESLICE
  2. Span and resource attributes of type attribute.MAP automatically deduplicate conflicting keys using last-value-wins semantics
  3. TraceIDRatioBased returns spec-compliant descriptions 'TraceIDRatioBased{1}' for fraction >= 1 and 'TraceIDRatioBased{0}' for fraction <= 0
  4. ParentBased sampler with NeverSample root continues to sample child spans with remote sampled parents by default
  5. resource.Merge returns ErrSchemaURLConflict and an empty SchemaURL when combining resources with mismatched non-empty schemas

Files

  • NOTES.md
  • csx.json
  • go.mod
  • go.sum
  • sample_test.go

Download the source artifact (tar.gz)

Origin Seeder

csx-seed