Wraps HttpTileUploader (AZ-319) with two bounded retry budgets:
- In-call (per-batch) — re-invokes inner on PARTIAL outcome up to
`max_in_call_retries` times with capped exponential backoff
(`min(base ** attempt_number, cap)`). On exhaustion: surfaces an
operator hint via `next_retry_at_s = now + backoff_cap_s`.
- Per-tile (cross-call) — atomically increments c6's
`tiles.upload_attempts` counter for every rejection; once a tile
hits `max_per_tile_attempts` it is forward-only transitioned to
`voting_status = upload_giveup` (excluded from `pending_uploads`).
Each transition emits FDR `kind="c11.upload.giveup"` plus an
ERROR log.
C6 contract changes (AZ-303 v1.3.0):
- VotingStatus.UPLOAD_GIVEUP added (forward-only from PENDING/TRUSTED).
- TileMetadataStore.increment_upload_attempts(tile_id) -> int added
with NotImplementedError default for backwards-compat.
- Migration 0003_c11_upload_attempts: additive column +
widened ck_tiles_voting_status (preserves IS NULL clause).
C11 wiring:
- C11RetryConfig + disable_retry_decorator on C11Config.
- build_tile_uploader wraps in decorator by default; bypass flag
returns the bare HttpTileUploader. New `clock` keyword.
Cross-component isolation honoured (AZ-507): the decorator declares
`_RetryMetadataStoreLike` Protocol cut over c6's TileMetadataStore
and references `UPLOAD_GIVEUP` via a local string constant — no c6
imports.
Tests: 13 decorator + 1 conformance + 2 factory bypass + AC-6 enum
update + alembic head bump + AZ-272 schema fixture. 238 passed across
c11/c6/fdr suites; pre-existing perf microbenches unrelated.
Code review: PASS_WITH_WARNINGS (5 Low/Informational findings,
docs-level or downstream-CI-blocked). See
_docs/03_implementation/reviews/batch_41_review.md.
Co-authored-by: Cursor <cursoragent@cursor.com>
Oleksandr Bezdieniezhnykh