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feat(youtube): map caption 429 to SourceRateLimited

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The baseUrl fetch mapped every non-200 to SourceNone, recording a 429 as a
permanent "no captions". 429 is the IP being rate-limited, not an absent
transcript. Return SourceRateLimited (still a graceful degrade, no error) so
the runner can retry after a backoff window. Other non-200s (403/404/5xx)
stay SourceNone.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
mathias
2026-06-03 22:45:29 +02:00
co-authored by Claude Opus 4.8
parent c63b2de66d
commit 4678d473b8
2 changed files with 37 additions and 0 deletions
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internal/adapters/youtube/captions.go
+6
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@@ -60,6 +60,12 @@ func (a *Adapter) FetchTranscript(ctx context.Context, v domain.Video) (domain.T
if err != nil {
return domain.Transcript{}, fmt.Errorf("download caption track for %q: %w", v.ProviderVideoID, err)
}
if status == http.StatusTooManyRequests {
// 429 means the IP is rate-limited; record for retry, not a permanent
// absence. Degrade gracefully (no error, no text) like SourceNone, but
// flag it distinctly so the runner backs off and retries (ADR-007/010).
return domain.Transcript{VideoID: v.ID, UserID: v.UserID, Source: domain.SourceRateLimited}, nil
}
if status != http.StatusOK {
// Owner-only 403, region/age gate, or transient unavailability: not an error.
return noTranscript(v), nil