daniel-oai 28b91c7c31 Honor the OTLP metrics temporality preference (#51220) ...

## Why

Some metrics backends require cumulative metrics, while configured OTLP exporters previously always used delta temporality.

## What changed

Read `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` for configured HTTP and gRPC metrics exporters. Accept `delta`, `cumulative`, and `lowmemory` case-insensitively, retaining delta for unset, empty, or unrecognized values. Document the setting and preserve existing temporality for the built-in Statsig exporter and runtime snapshots.

## Testing

Update the HTTP loopback test to set the preference in an isolated subprocess and assert that the exported counter uses cumulative aggregation temporality.

GitOrigin-RevId: ca212eea20054b947005d323186c8b9a819ace9d

2026-10-06 01:36:17 +00:00

..

buffered_operations_tests.rs

Add bounded buffering for global operation metrics (#47619)

2026-09-23 18:39:47 +00:00

manager_metrics.rs

Attribute tool telemetry to the invoking turn's product SKU (#47741)

2026-09-24 04:10:08 +00:00

mod.rs

Add bounded buffering for global operation metrics (#47619)

2026-09-23 18:39:47 +00:00

otel_export_routing_policy.rs

Add opt-in OTLP logging for Guardian assessments (#47870)

2026-09-24 16:06:07 +00:00

otlp_http_loopback.rs

Honor the OTLP metrics temporality preference (#51220)

2026-10-06 01:36:17 +00:00

runtime_summary.rs

Make tool-result telemetry limits configurable (#39779)

2026-08-20 19:09:04 +00:00

send.rs

Use explicit histogram buckets for tool and skill context metrics (#48819)

2026-09-28 00:05:54 +00:00

snapshot.rs

Export turn cost as an OTEL metric (#40488)

2026-08-24 22:44:33 +00:00

timing.rs

Extend second-based latency histogram buckets (#34375)

2026-07-20 16:25:57 +00:00

validation.rs

[codex] reduce module visibility (#16978)

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