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[AZ-526] Consolidate _iso_ts_from_clock into helpers/iso_timestamps

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Closes cumulative review 46-48 F1 (Medium) + F3 (Low). Adds
iso_ts_from_clock(clock) alongside iso_ts_now() in the Layer-1
helper; migrates four duplicate definitions in c2_vpr (net_vlad,
ultra_vpr, _faiss_bridge) and c12_operator_orchestrator
(operator_reloc_service). Output format flipped +00:00 -> Z to
align with iso_ts_now() and the canonical FDR _TS fixture (FDR
schema test passes unmodified).

18 helper AC tests + 186 sibling tests pass; ruff clean.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Oleksandr Bezdieniezhnykh
2026-05-13 23:37:04 +03:00
parent fbeeab60b3
commit 5dfd9a577e
13 changed files with 540 additions and 82 deletions
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_docs/02_document/module-layout.md
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@@ -363,9 +363,9 @@ Bootstrap reference: `_docs/02_tasks/todo/AZ-263_initial_structure.md`. Architec
### shared/helpers/iso_timestamps
- **File**: `src/gps_denied_onboard/helpers/iso_timestamps.py`
- **Purpose**: Single Layer-1 UTC ISO-8601 timestamp source for FDR record envelopes (`iso_ts_now() -> str`, format `YYYY-MM-DDTHH:MM:SS.ffffffZ` matching the canonical FDR `_TS` fixture). Replaces the duplicated private `_iso_ts_now` one-liners that previously lived inside `c6_tile_cache` (3 modules — already locally consolidated under `_timestamp.py`) and `c7_inference` (2 modules). Stateless free function; stdlib only.
- **Owned by**: AZ-264 (AZ-508 consolidation task).
- **Consumed by**: c6_tile_cache (`cache_budget_enforcer`, `postgres_filesystem_store`, `freshness_gate`), c7_inference (`onnx_trt_ep_runtime`, `thermal_publisher`); future C10/C11 FDR producers should import this helper rather than redefining the one-liner locally.
- **Purpose**: Single Layer-1 UTC ISO-8601 timestamp source for FDR record envelopes. Two surfaces — `iso_ts_now() -> str` (wall-clock, microsecond precision, format `YYYY-MM-DDTHH:MM:SS.ffffffZ`) and `iso_ts_from_clock(clock: Clock) -> str` (Clock-injected, nanosecond precision, format `YYYY-MM-DDTHH:MM:SS.fffffffffZ`). Both terminate with the canonical `Z` suffix matching the FDR `_TS` fixture. Replaces the duplicated private `_iso_ts_now` (AZ-508) and `_iso_ts_from_clock` (AZ-526) one-liners that previously lived inside `c6_tile_cache`, `c7_inference`, `c2_vpr`, and `c12_operator_orchestrator`. Stateless functions; stdlib + Layer-1 `gps_denied_onboard.clock.Clock` only.
- **Owned by**: AZ-264 (AZ-508 + AZ-526 consolidation tasks).
- **Consumed by**: c6_tile_cache (`cache_budget_enforcer`, `postgres_filesystem_store`, `freshness_gate`) + c7_inference (`onnx_trt_ep_runtime`, `thermal_publisher`) via `iso_ts_now`; c2_vpr (`net_vlad`, `ultra_vpr`, `_faiss_bridge`) + c12_operator_orchestrator (`operator_reloc_service`) via `iso_ts_from_clock`. Future C3 / C4 / C5 FDR producers should import the appropriate helper rather than redefining the one-liner locally.
### shared/frame_source