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Oleksandr Bezdieniezhnykh
f925af9de3
Freezes the c6_tile_cache Public API per
_docs/02_document/contracts/c6_tile_cache/{tile_store,tile_metadata_store,
descriptor_index}.md v1.0.0:
- Three runtime_checkable Protocols (TileStore 4-method, TileMetadataStore
9-method, DescriptorIndex 5-method) in components/c6_tile_cache/interface.py.
- Frozen DTOs + enums (TileId, TileMetadata, TileMetadataPersistent,
TileQualityMetadata, Bbox, SectorBoundary, HnswParams, IndexMetadata,
TileSource, FreshnessLabel, VotingStatus, SectorClassification) in
components/c6_tile_cache/_types.py. Constructor-time validation rejects
out-of-range zoom_level / lat / lon and inverted Bbox.
- TilePixelHandle ABC for read-only mmap access (Invariant I-4).
- TileCacheError family (6 subtypes) + IndexBuildError (deliberately
outside the family) in components/c6_tile_cache/errors.py.
- C6TileCacheConfig per-component config block, registered on package
import; validates known runtime labels at construction time.
- Composition-root factories build_tile_store / build_tile_metadata_store /
build_descriptor_index in runtime_root/storage_factory.py, with lazy
concrete-impl imports gated by BUILD_FAISS_INDEX (AC-5 / Risk 2:
no module-level FAISS import when the flag is OFF).
- RuntimeNotAvailableError defined in runtime_root/errors.py to be shared
with AZ-297 (composition-time error, distinct from per-component
runtime errors).
51 conformance tests cover all 10 ACs + NFR-perf-factory (p99 build_*
under 50 ms across 1000 calls) + NFR-reliability-error-family. AC-9
introspects each contract file's Shape table and asserts method
parity against the runtime Protocol.
Retired the AZ-263 scaffolding SectorClassification (dataclass) and
TileQualityMetadata from _types/tile.py since their canonical home is
now c6_tile_cache._types; Tile and TileRecord remain in _types/tile.py
until c3_matcher (AZ-344) and c11_tile_manager (AZ-316/319) retire
their interface stubs.
Full unit-test sweep: 791 passed, 2 pre-existing environment skips.
Co-authored-by: Cursor <cursoragent@cursor.com>