infoxtractor/src/ix/ocr/__init__.py
Dirk Riemann ebefee4184
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feat(app): production wiring — factories, pipeline, /healthz real probes
Task 4.3 closes the loop on Chunk 4: the FastAPI lifespan now selects
fake vs real clients via IX_TEST_MODE (new AppConfig field), wires
/healthz probes to the live selfcheck() on OllamaClient / SuryaOCRClient,
and spawns the worker with a production Pipeline factory that builds
SetupStep -> OCRStep -> GenAIStep -> ReliabilityStep -> ResponseHandler
over the injected clients.

Factories:
- make_genai_client(cfg) -> FakeGenAIClient | OllamaClient
- make_ocr_client(cfg)   -> FakeOCRClient  | SuryaOCRClient (spec §6.2)

Probes run the async selfcheck on a fresh event loop in a short-lived
thread so they're safe to call from either sync callers or a live
FastAPI handler without stalling the request loop.

Drops the worker-loop spawn_worker_task stub — the app module owns the
production spawn directly.

Tests: +11 unit tests (5 factories + 6 app-wiring / probe adapter /
pipeline build). Full suite: 236 passed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-18 12:09:11 +02:00

34 lines
1.1 KiB
Python

"""OCR subsystem: protocol + fake + real Surya client + factory.
Real engines (Surya today, Azure DI / AWS Textract … deferred) plug in
behind :class:`OCRClient`. The factory :func:`make_ocr_client` picks
between :class:`FakeOCRClient` (when ``IX_TEST_MODE=fake``) and
:class:`SuryaOCRClient` (production). Unknown engine names raise so a
typo'd ``IX_OCR_ENGINE`` surfaces at startup, not later.
"""
from __future__ import annotations
from ix.config import AppConfig
from ix.contracts.response import OCRDetails, OCRResult
from ix.ocr.client import OCRClient
from ix.ocr.fake import FakeOCRClient
from ix.ocr.surya_client import SuryaOCRClient
def make_ocr_client(cfg: AppConfig) -> OCRClient:
"""Return the :class:`OCRClient` configured for the current run."""
if cfg.test_mode == "fake":
return FakeOCRClient(canned=OCRResult(result=OCRDetails()))
if cfg.ocr_engine == "surya":
return SuryaOCRClient()
raise ValueError(f"Unknown ocr_engine: {cfg.ocr_engine!r}")
__all__ = [
"FakeOCRClient",
"OCRClient",
"SuryaOCRClient",
"make_ocr_client",
]