bvandeusen
171c486939
The `select(ImportSettings).where(id == 1)).scalar_one()` singleton load was repeated 15× across services, API, and 5 task modules. Added async load() + sync load_sync() classmethods on the model and migrated all 15 full-row sites (callers already imported ImportSettings, so no new imports; dropped download's now-orphaned select import). Left maintenance.py's deliberate column-select (import_scan_path only) as-is. Rest of the service layer was already adequately DRY — the Record/to_dict pattern is only 2 instances and the savepoint find-or-create recovery is correctly per-entity, so neither was forced into a shared abstraction. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
76 lines
3.0 KiB
Python
76 lines
3.0 KiB
Python
"""ImportSettings — single-row table holding the importer's tunable knobs.
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Enforced as a single row via a CHECK (id = 1) constraint. The application
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always SELECTs id=1 and never inserts/deletes after the initial migration.
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"""
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from sqlalchemy import Boolean, CheckConstraint, Float, Integer, Text, select
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from sqlalchemy.orm import Mapped, mapped_column
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from .base import Base
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class ImportSettings(Base):
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__tablename__ = "import_settings"
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# Bare constraint name — Base.metadata's naming convention applies the
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# ck_<table>_<name> prefix, producing the final ck_import_settings_singleton.
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__table_args__ = (CheckConstraint("id = 1", name="singleton"),)
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id: Mapped[int] = mapped_column(Integer, primary_key=True)
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import_scan_path: Mapped[str] = mapped_column(Text, nullable=False, default="/import")
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min_width: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
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min_height: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
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skip_transparent: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
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transparency_threshold: Mapped[float] = mapped_column(Float, nullable=False, default=0.9)
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skip_single_color: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
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single_color_threshold: Mapped[float] = mapped_column(Float, nullable=False, default=0.95)
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single_color_tolerance: Mapped[int] = mapped_column(Integer, nullable=False, default=30)
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phash_threshold: Mapped[int] = mapped_column(Integer, nullable=False, default=10)
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# FC-3c downloader knobs
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download_rate_limit_seconds: Mapped[float] = mapped_column(
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Float, nullable=False, default=3.0
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)
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download_validate_files: Mapped[bool] = mapped_column(
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Boolean, nullable=False, default=True
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)
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# FC-3d scheduling knobs
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download_schedule_default_seconds: Mapped[int] = mapped_column(
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Integer, nullable=False, default=28800
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)
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download_event_retention_days: Mapped[int] = mapped_column(
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Integer, nullable=False, default=90
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)
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download_failure_warning_threshold: Mapped[int] = mapped_column(
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Integer, nullable=False, default=5
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)
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# FC-3h backup knobs.
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backup_db_nightly_enabled: Mapped[bool] = mapped_column(
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Boolean, nullable=False, default=False,
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)
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backup_db_nightly_hour_utc: Mapped[int] = mapped_column(
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Integer, nullable=False, default=3,
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)
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backup_db_keep_last_n: Mapped[int] = mapped_column(
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Integer, nullable=False, default=14,
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)
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backup_images_keep_last_n: Mapped[int] = mapped_column(
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Integer, nullable=False, default=3,
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)
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@classmethod
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async def load(cls, session) -> "ImportSettings":
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"""The singleton settings row (id=1), via an async session."""
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return (await session.execute(select(cls).where(cls.id == 1))).scalar_one()
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@classmethod
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def load_sync(cls, session) -> "ImportSettings":
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"""The singleton settings row (id=1), via a sync session."""
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return session.execute(select(cls).where(cls.id == 1)).scalar_one()
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