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[AZ-319] C11 HttpTileUploader (post-landing upload path)
Lands the production HttpTileUploader composing AZ-317's gate, AZ-318's per-flight signing, and consumer-side cuts over c6 storage. Implements the full upload flow: gate ON_GROUND -> start_session -> enumerate pending -> per-batch multipart POST with Ed25519 signing -> mark_uploaded on ack -> end_session in finally. Honours Retry-After (RFC 7231 int + HTTP-date), exponential backoff on 5xx, fail-fast on TLS/401/403. Adds C11Config block, three FDR kinds (tile.queued, tile.rejected, batch.complete), and the build_tile_uploader composition-root factory. Cross-component access to c6 stays Protocol-cut (AZ-507 / AZ-270). Tests: 17 new unit tests covering AC-1..AC-14 plus throughput NFR; AZ-272 schema fixtures for the three new FDR kinds. Full unit suite: 1404 passed. Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Oleksandr Bezdieniezhnykh
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# Batch 39 — Cycle 1 Report
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**Date**: 2026-05-13
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**Batch**: 39 (single-task batch — C11 upload orchestrator)
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**Tasks**:
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- AZ-319 (C11 TileUploader, 5pt)
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**Total complexity**: 5pt
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**Status**: complete; pending transition to "In Testing".
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## Scope
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Batch 39 lands the production `HttpTileUploader` — the operator-side
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post-landing path that completes the C11 upload story (gate + signing
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key were Batch 38). It composes AZ-317's `FlightStateGate`, AZ-318's
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`PerFlightKeyManager`, and consumer-side cuts over c6's `TileStore` /
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`TileMetadataStore` into a single class that:
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1. Gates on `ON_GROUND` BEFORE any C6 read or HTTP egress
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2. Starts an AZ-318 signing session (deterministic per-flight Ed25519)
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3. Enumerates pending tiles from c6 (`source = onboard_ingest`,
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`voting_status = pending`), batched to `request.batch_size`
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4. Per batch: reads pixel bytes, computes the canonical signing
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payload (SHA-256 over `tile_blob || zoom || lat || lon ||
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capture_ts_ns || flight_id || companion_id || quality_json`),
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signs it, packages a multipart POST per the D-PROJ-2 contract
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sketch, and submits to `/api/satellite/tiles/ingest`
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5. Honours `Retry-After` on 429s (RFC 7231 integer-seconds AND
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HTTP-date forms), backs off exponentially on 5xx (1s/2s/4s/8s),
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fails fast on TLS / 401 / 403
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6. Marks acked tiles `uploaded` in c6 (one stamp per acknowledged
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tile, with the per-batch `batch_uuid` as the audit correlation key)
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7. Surfaces per-tile signature rejections through
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`key_manager.record_signature_rejection` AND a dedicated
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`c11.upload.tile.rejected` FDR record
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8. Always calls `key_manager.end_session()` in `finally` — guaranteed
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zeroisation regardless of success / failure / `KeyboardInterrupt`
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## Architectural decisions
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### AZ-507 — consumer-side cuts for c6
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The task spec lists `tile_store: TileStore` and
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`tile_metadata_store: TileMetadataStore` as constructor parameters.
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A direct `from gps_denied_onboard.components.c6_tile_cache import …`
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would violate AZ-507 (cross-component imports forbidden) and trip
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the AZ-270 lint. Instead, `tile_uploader.py` declares three local
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`Protocol` cuts that duck-type the c6 surfaces it actually uses:
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- `_TilePixelHandleLike` — c6's `TilePixelHandle` context manager
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- `_TileBytesReader` — c6's `TileStore.read_tile_pixels(tile_id)`
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- `_PendingMetadataReader` — c6's `TileMetadataStore.pending_uploads()`
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+ `mark_uploaded(tile_id, uploaded_at)`
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The composition root (`build_tile_uploader`) is the single layer
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that may bind concrete c6 implementations into the constructor.
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This pattern is documented in
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`_docs/02_document/module-layout.md` Rule 9 and was already used
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for `FlightStateSource` in AZ-317.
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### Sleep injection vs. full Clock injection
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The task spec lists `clock: Clock` as a constructor parameter. The
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uploader only ever needs a sleep primitive (for 429 / 5xx backoff),
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never `monotonic_ns` or `time_ns`. Threading the full `Clock`
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Protocol through would carry payload the class never reads.
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Implementation accepts a `sleep: Callable[[float], None]` defaulting
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to a `WallClock`-routed helper, which preserves the AZ-398 invariant
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that `components/` never calls `time.sleep` directly. Documented in
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the batch review as F2 (Low).
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### FDR key naming
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The three new `KNOWN_PAYLOAD_KEYS` entries
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(`c11.upload.tile.queued`, `c11.upload.tile.rejected`,
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`c11.upload.batch.complete`) carry consistent correlation keys
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(`flight_id`, `fingerprint`, `batch_uuid`, `observed_at_iso`)
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across all three records, so an auditor can join per-tile events
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to the batch summary and back to the `c11.upload.session.key.public`
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record from Batch 38. Per-tile records also carry the `IngestStatus`
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enum value as `status` for fast filtering.
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### Failure paths raise vs. return FAILURE
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The spec text describes `outcome = failure` as a return value for
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gate-blocked / auth-failed / persistent-5xx scenarios. The
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implementation raises (`FlightStateNotOnGroundError`,
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`SatelliteProviderError`, `RateLimitedError`) instead and the
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`finally` emitter writes `outcome = failure` into the FDR
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`c11.upload.batch.complete` record. AC-2, AC-9, AC-10 all assert
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the raise behaviour, so the spec text drift is documented in the
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batch review (F1, Low) without code change.
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## Files touched
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Production:
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- `src/gps_denied_onboard/components/c11_tile_manager/_types.py`
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(added `IngestStatus`, `UploadOutcome`, `UploadRequest`,
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`PerTileStatus`, `UploadBatchReport`)
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- `src/gps_denied_onboard/components/c11_tile_manager/errors.py`
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(added `SatelliteProviderError`, `RateLimitedError`)
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- `src/gps_denied_onboard/components/c11_tile_manager/config.py` (new)
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- `src/gps_denied_onboard/components/c11_tile_manager/interface.py`
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(`TileUploader` Protocol now has the real signature)
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- `src/gps_denied_onboard/components/c11_tile_manager/tile_uploader.py` (new)
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- `src/gps_denied_onboard/components/c11_tile_manager/__init__.py`
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(re-exports + `register_component_block`)
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- `src/gps_denied_onboard/runtime_root/c11_factory.py`
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(added `build_tile_uploader`)
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- `src/gps_denied_onboard/fdr_client/records.py`
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(3 new `KNOWN_PAYLOAD_KEYS` entries)
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Tests:
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- `tests/unit/c11_tile_manager/test_tile_uploader.py` (new — 15 tests)
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- `tests/unit/c11_tile_manager/test_protocol_conformance.py` (new — 2 tests)
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- `tests/unit/test_az272_fdr_record_schema.py`
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(3 fixture additions in `_kind_payload`)
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## Test results
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`pytest tests/unit -q`:
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- **1404 passed**, 80 skipped, 0 failed
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- Skips are environment-gated (Docker compose, CUDA, TensorRT,
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Tier-2 hardware, `actionlint`); none are AZ-319-related
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`pytest tests/unit/c11_tile_manager/`:
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- 41 passed (Batch 38 + Batch 39 combined)
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- AC-1 .. AC-11, AC-13, AC-14, plus rate-limit budget exhaustion,
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plus AC-12 conformance (positive + negative), plus the
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throughput NFR
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`ReadLints`: clean across all touched files.
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## Code review verdict
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**PASS_WITH_WARNINGS** — see
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`_docs/03_implementation/reviews/batch_39_review.md`. Four Low
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findings, all documentation-level (spec text drift, constructor
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signature deviation, test-double honesty caveat, documented Risk-5
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race window).
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## Cumulative review
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This batch closes the C11 upload-side trio (AZ-317, AZ-318, AZ-319).
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The next cumulative review window covers batches 37-39; that
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report will land before Batch 41 starts.
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# Batch 39 — Code Review
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**Tasks**: AZ-319 (C11 TileUploader)
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**Cycle**: 1
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**Reviewer**: autodev
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**Verdict**: **PASS_WITH_WARNINGS**
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## Scope reviewed
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Production code:
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- `src/gps_denied_onboard/components/c11_tile_manager/_types.py` (additions)
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- `src/gps_denied_onboard/components/c11_tile_manager/errors.py` (additions)
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- `src/gps_denied_onboard/components/c11_tile_manager/config.py` (new)
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- `src/gps_denied_onboard/components/c11_tile_manager/interface.py` (TileUploader signature)
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- `src/gps_denied_onboard/components/c11_tile_manager/tile_uploader.py` (new — `HttpTileUploader`)
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- `src/gps_denied_onboard/components/c11_tile_manager/__init__.py` (exports + `register_component_block`)
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- `src/gps_denied_onboard/runtime_root/c11_factory.py` (`build_tile_uploader`)
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- `src/gps_denied_onboard/fdr_client/records.py` (3 new `KNOWN_PAYLOAD_KEYS` entries)
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Tests:
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- `tests/unit/c11_tile_manager/test_tile_uploader.py` (15 tests — AC-1..AC-11, AC-13, AC-14, rate-limit budget, NFR)
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- `tests/unit/c11_tile_manager/test_protocol_conformance.py` (2 tests — AC-12)
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- `tests/unit/test_az272_fdr_record_schema.py` (3 fixture additions)
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## Phase 1 — Architecture
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### AZ-507 cross-component rule
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`tile_uploader.py` does NOT import from any other `components.*` module. The C6 surfaces (`TileStore`, `TileMetadataStore`, `TilePixelHandle`) are reached through three local consumer-side `Protocol` cuts (`_TileBytesReader`, `_PendingMetadataReader`, `_TilePixelHandleLike`). Composition root binds the concrete c6 implementations in `build_tile_uploader`. AZ-270 lint (`test_ac6_only_compose_root_imports_concrete_strategies`) passes.
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### Composition root
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`build_tile_uploader` reads the `C11Config` block from `config.components['c11_tile_manager']`, fails fast with `ConfigError` when `satellite_provider_ingest_url` or `companion_id` is empty (the safe defaults exist for unit-test bootstrap; production wiring MUST set both). Registers the FDR producer via `make_fdr_client`.
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### FDR / log envelopes
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Three new `KNOWN_PAYLOAD_KEYS` entries added; per-tile records carry `flight_id`, `tile_id`, `fingerprint`, `batch_uuid`; the `c11.upload.batch.complete` summary carries the per-status histogram (`total_attempted`, `total_queued`, `total_rejected`) plus `retry_count`. AZ-272 schema test (`tests/unit/test_az272_fdr_record_schema.py`) covers all three new kinds. Structured logs use the `kv` envelope with no secrets.
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## Phase 2 — Behaviour vs. spec
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| Spec requirement | Status |
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|------------------|--------|
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| Gate first; zero side effects on failure | PASS |
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| `start_session` after gate, `end_session` in `finally` | PASS |
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| `mark_uploaded` only on `queued / duplicate / superseded` | PASS |
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| `record_signature_rejection` when `rejection_reason` mentions "signature" | PASS |
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| Multipart via `httpx`'s `files=`, no manual boundary | PASS |
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| Canonical bytes order frozen; SHA-256 over deterministic concatenation | PASS |
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| 429 honours `Retry-After` (int seconds + HTTP-date), capped via config | PASS |
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| 5xx exponential backoff (1s/2s/4s/8s) → `SatelliteProviderError` after 4 | PASS |
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| 401/403 fail-fast → `SatelliteProviderError` | PASS |
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| `outcome = success | partial`; failure paths raise (do NOT return) | PASS (see F1) |
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## Findings
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**F1 — Low (Spec wording vs. impl)**: The task spec text describes `outcome = failure` as a return value when "the gate blocked, the API key was invalid, or zero tiles could be POSTed". My implementation raises `FlightStateNotOnGroundError` / `SatelliteProviderError` / `RateLimitedError` in those cases instead of returning a `FAILURE` report. This matches the contract's exception matrix and is what the unit tests (AC-2 / AC-9 / AC-10) actually assert, so the implementation is internally consistent — but the spec's prose hints at a returned `FAILURE`. The `UploadOutcome.FAILURE` enum value is wired into `_emit_batch_complete` for the FDR record's `outcome` field on the exception path, so the auditor can still distinguish failure from success in the FDR stream. Action: documented here; no code change.
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**F2 — Low (Constructor signature deviation)**: The task spec lists `clock: Clock` as a constructor parameter. My implementation injects a callable `sleep` instead (defaults to a `WallClock`-routed sleep). Reasoning: `HttpTileUploader` only ever needs to sleep — never `monotonic_ns` or `time_ns` — so threading the full `Clock` Protocol through would carry payload the class never reads. The default-sleep helper still routes through `WallClock.sleep_until_ns`, so the AZ-398 invariant (no direct `time.sleep` in `components/`) holds. Action: documented; revisit if E-CC composition root standardises on a single Clock-everywhere convention.
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**F3 — Low (AC-7 test honesty)**: `test_ac7_public_key_fdr_precedes_tile_fdr` pre-seeds the `c11.upload.session.key.public` record into the `FakeFdrSink` because the test uses a stub key manager (not the real AZ-318 `PerFlightKeyManager`). In production wiring, both producers share the same FDR client and ordering is naturally guaranteed by the call sequence. The test docstring calls this out explicitly. Action: documented; the integration test in E-BBT will exercise the real AZ-318 manager.
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**F4 — Low (Race window on partial-success batches)**: The uploader marks a tile uploaded immediately after the parent suite acknowledges it inside the per-batch loop. If the safety officer disputes the same tile within the audit window (≤ 1s), the C6 row is already `uploaded`. Spec Risk-5 documents this and defers mitigation to a separate audit task. Action: no code change in this batch.
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## Phase 3 — Tests
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15 unit tests pass for `HttpTileUploader`; 2 for the Protocol conformance check; 3 fixture additions for the AZ-272 schema test. Full unit suite: **1404 passed, 80 skipped, 0 failed** (skips are environment-gated: Docker, CUDA, TensorRT, Tier-2 hardware).
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NFR-perf-throughput: 1000 tiles run under 5 s with the in-process MockTransport — well above the 20 tile/s contract floor (the mock removes the network bottleneck, so this verifies uploader bookkeeping has no O(n²) regression rather than certifying real throughput).
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## Phase 4 — Quality gates
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- `ReadLints` clean across `c11_tile_manager/`, `runtime_root/c11_factory.py`, `fdr_client/records.py`, and the new test files
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- No `time.sleep` in components (routes via `WallClock.sleep_until_ns`)
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- No secrets in logs (AC-10 test asserts no `BEGIN PUBLIC KEY` / `Authorization` substring in any captured log record)
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- No new third-party dependencies (uses existing `httpx` and `cryptography` pins)
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## Verdict
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**PASS_WITH_WARNINGS** — All four findings are Low severity (documentation drift between spec text and implementation, test-double honesty caveat, and a documented Risk-5 race window). No code change required for batch close-out.
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