Files
pentagi/backend/cmd
Sergey KozyrenkoandClaude Opus 4.8 2c524faea9 fix(observability,flows): drain telemetry sinks in parallel, stop leaking docker errors, dedup listing failures
Three defects on the shutdown and container-listing paths:

- Telemetry drain ran the langfuse and otel sinks serially under one deadline.
  langfuse's ForceFlush/Shutdown ignore the caller ctx and block on their own
  timeout, so a langfuse outage burned the whole budget and the healthy otel
  sink's final batch was never flushed. Add observer.Drain, which flushes then
  shuts down each sink in its own goroutine bounded by the deadline; main uses
  it, retiring the inline flush-then-shutdown dance.

- The partial-success listing put the raw stat/list error into the 200 body's
  Failures[].Message, exposing docker-layer detail (container ids, the daemon
  address) that response.Error only reveals under develop mode. Send a generic
  message to the client and keep the raw text dev-gated, logged server-side.

- A path read successfully by one query could also appear in Failures when
  another query failed on it, order-dependent. Reconcile at assembly: drop any
  failure whose path was read successfully, so no path is in both arrays.

Also bound the exec stdout buffered before parsing so a compromised sandbox
can't stream unbounded output into memory.

Tests: Drain delivers a healthy otel sink while a langfuse sink blocks and
returns within its deadline; the listing failure message is dev-gated; a path
never lands in both Files and Failures. Live: unreachable collector -> shutdown
stays bounded (~5s) and exits cleanly.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-12 22:24:02 +07:00
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