richardopenai 7e5e41daea [codex] Add reusable OTEL gauge instruments (#27057) ...

## Why

Exec-server observability needs current-value measurements in addition
to counters. The reusable OTEL client should expose that primitive
without coupling it to exec-server runtime behavior.

## What changed

- Adds integer gauge instruments, with optional descriptions.
- Caches gauges by name and description so instrument metadata remains
part of the declaration identity.
- Covers gauge values, descriptions, merged attributes, and OTLP HTTP
export.

This PR only adds the gauge primitive. It does not add second-based
duration histograms or exec-server adoption.

## Stack

1. #26091: counter descriptions
2. **#27057: gauge instruments**
3. #27058: second-based duration histograms

Related independent coverage: #27059 tests OTLP HTTP log and trace event
export.

## Validation

- `just test -p codex-otel`
- `just fix -p codex-otel`
- `just fmt`

7e5e41daea · 2026-06-10 21:36:38 +00:00

History

..

harness

[codex] reduce module visibility (#16978)

2026-04-07 08:03:35 -07:00

suite

[codex] Add reusable OTEL gauge instruments (#27057)

2026-06-10 21:36:38 +00:00

tests.rs

feat: metrics capabilities (#8318)

2026-01-08 11:47:36 +00:00