Sriram Veeraghanta 57913925b2 fix(api/observability): honor settings-configured Celery pool, pass signal-specific endpoints, guard filelog parser ...

Follow-up review fixes for #9419:

- _is_prefork_worker() only read argv, so a pool selected through
  CELERY_WORKER_POOL (notably `threads`, which runs tasks in the main process
  and never dispatches worker_process_init) was misclassified as prefork. The
  providers were then deferred to a signal that never fires and the worker
  exported nothing. _effective_pool() now applies Celery's own precedence:
  -P/--pool flag, then worker_pool from settings, then the prefork default.
- Pass OTEL_EXPORTER_OTLP_TRACES_ENDPOINT / _METRICS_ENDPOINT through
  x-otel-env. is_otel_active() and the exporters both honor them, so an
  operator setting only those had telemetry silently disabled in every
  container.
- Guard the collector's second json_parser with an `if` on attributes.log:
  filelog.include matches every container on the host, so plaintext logs from
  postgres/redis/rabbitmq logged a parse error per line.
- Cover the pool detection with unit tests, including the settings-configured
  and CLI-overrides-settings cases.

Claude-Session: https://claude.ai/code/session_01BpGkdpVLNQ3Ziqcd6zK2qV

2026-08-30 14:14:07 +05:30

..

otel-api-observability

fix(api/observability): honor settings-configured Celery pool, pass signal-specific endpoints, guard filelog parser

2026-08-30 14:14:07 +05:30

linting.md

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