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T

Tyler Yahn b1284dbfaa Support BYTESLICE attributes across trace and exporter paths (#8153 )

Fixes https://github.com/open-telemetry/opentelemetry-go/issues/8164

Supersedes #8042 which does not address the `trace` or `zipkin`
packages, and has unrelated support changes.

Add end-to-end handling for `attribute.BYTESLICE` in the remaining trace
and exporter paths that still dropped, invalidated, or stringified byte
slice attributes.

This change:

- preserves byte slice attributes in `trace/auto`
- encodes byte slice attributes as OTLP `AnyValue_BytesValue` in trace,
log, and metric transforms
- serializes Zipkin byte slice attributes as JSON arrays of byte values
- adds regression tests for each updated path

## Problem

`attribute.BYTESLICE` is public, but several downstream conversions
still did not handle it correctly:

- `trace/auto` dropped byte slice attributes during conversion
- OTLP trace, log, and metric transforms fell through to their invalid
default handling
- Zipkin fell back to `Value.Emit()`, which produced a base64 string
rather than an explicit byte-array representation

That made `BYTESLICE` unusable or inconsistent depending on the export
path.

## Changes

### Trace

- Handle `attribute.BYTESLICE` in `trace/auto` by converting it to an
internal telemetry bytes value.
- Add a regression test covering byte slice conversion.

### OTLP

- Handle `attribute.BYTESLICE` in:
  - trace attribute transform
  - log gRPC attribute transform
  - log HTTP attribute transform
  - metric HTTP attribute transform
  - metric gRPC attribute transform
- Update the shared log and metric transform templates so generated
outputs stay aligned.
- Add regression tests for the trace transform, both log transform
outputs, and both metric transform outputs.

### Zipkin

- Handle `attribute.BYTESLICE` explicitly in Zipkin tag serialization.
- Serialize byte slices as JSON arrays of byte values instead of base64
text.
- Add a regression test for Zipkin byte slice serialization.

---------

Co-authored-by: Robert Pająk <pellared@hotmail.com>

2026-04-09 14:04:03 -07:00

counter

fix: correct package import paths (#7244 )

2025-08-25 17:51:06 +02:00

otlp

Support BYTESLICE attributes across trace and exporter paths (#8153 )

2026-04-09 14:04:03 -07:00

fix(x): correct source filename in generated test files (#7766 )

2026-01-26 19:18:33 -08:00

README.md

Decouple otlp/otlptrace/internal from otlp/internal using gotmpl (#4397 )

2023-08-02 12:28:35 -07:00

README.md

Shared

Code under this directory contains reusable internal code which is distributed across packages using //go:generate gotmpl in gen.go files.