mirror of https://github.com/enpaul/kodak.git
161 lines
5.0 KiB
Python
161 lines
5.0 KiB
Python
import json
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import os
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from dataclasses import dataclass
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from dataclasses import field
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from pathlib import Path
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from typing import Any
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from typing import Dict
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from typing import NamedTuple
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from typing import Optional
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from typing import Sequence
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from typing import Union
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from kodak import constants
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class DimensionConfig(NamedTuple):
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strategy: constants.DimensionStrategy
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anchor: constants.Anchor
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value: int
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@dataclass
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class DatabaseSqliteConfig:
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path: Path = Path.cwd() / "fresnel.db"
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pragmas: Dict[str, Any] = field(
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default_factory=lambda: constants.DEFAULT_SQLITE_PRAGMAS
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)
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@classmethod
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def from_env(cls):
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return cls(
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path=Path(os.environ.get("KODAK_DB_SQLITE_PATH", cls.path)),
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pragmas=json.loads(os.environ["KODAK_DB_SQLITE_PRAGMAS"])
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if "KODAK_DB_SQLITE_PRAGMAS" in os.environ
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else constants.DEFAULT_SQLITE_PRAGMAS,
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)
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@dataclass
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class DatabaseMariaConfig:
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hostname: str = "localhost"
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username: str = "root"
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password: Optional[str] = None
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port: int = 3306
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schema: str = "fresnel"
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@classmethod
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def from_env(cls):
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return cls(
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hostname=os.getenv("KODAK_DB_MARIA_HOSTNAME", cls.hostname),
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username=os.getenv("KODAK_DB_MARIA_USERNAME", cls.username),
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password=os.environ.get("KODAK_DB_MARIA_PASSWORD", cls.password),
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port=int(os.environ.get("KODAK_DB_MARIA_PORT", cls.port)),
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schema=os.getenv("KODAK_DB_MARIA_SCHEMA", cls.schema),
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)
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@dataclass
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class DatabaseConfig:
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backend: constants.DatabaseBackend = constants.DatabaseBackend.SQLITE
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sqlite: DatabaseSqliteConfig = field(default_factory=DatabaseSqliteConfig.from_env)
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mariadb: DatabaseMariaConfig = field(default_factory=DatabaseMariaConfig.from_env)
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@classmethod
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def from_env(cls):
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return cls(
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backend=constants.DatabaseBackend[os.environ["KODAK_DB_BACKEND"].upper()]
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if "KODAK_DB_BACKEND" in os.environ
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else cls.backend
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)
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@dataclass
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class ManipConfig:
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name: str
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strategy: constants.DimensionStrategy = constants.DimensionStrategy.SCALE
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anchor: constants.Anchor = constants.Anchor.C
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formats: Sequence[constants.ImageFormat] = (
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constants.ImageFormat.JPEG,
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constants.ImageFormat.PNG,
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)
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horizontal: Optional[Union[int, float]] = None
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vertical: Optional[Union[int, float]] = None
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@classmethod
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def from_env(cls, key: str):
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strategy = (
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constants.DimensionStrategy[
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os.environ[f"KODAK_MANIP_{key}_STRATEGY"].upper()
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]
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if f"KODAK_MANIP_{key}_STRATEGY" in os.environ
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else cls.strategy
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)
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dimension_conversion = (
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float if strategy == constants.DimensionStrategy.RELATIVE else int
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)
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return cls(
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name=os.getenv(f"KODAK_MANIP_{key}_NAME", key.lower()),
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strategy=strategy,
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anchor=constants.Anchor(os.environ[f"KODAK_MANIP_{key}_ANCHOR"].lower())
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if f"KODAK_MANIP_{key}_ANCHOR" in os.environ
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else cls.anchor,
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formats=[
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constants.ImageFormat[item.upper()]
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for item in os.environ[f"KODAK_MANIP_{key}_FORMATS"].split(",")
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]
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if f"KODAK_MANIP_{key}_FORMATS" in os.environ
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else cls.formats,
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horizontal=dimension_conversion(os.environ[f"KODAK_MANIP_{key}_HORIZONTAL"])
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if f"KODAK_MANIP_{key}_HORIZONTAL" in os.environ
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else cls.horizontal,
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vertical=dimension_conversion(os.environ[f"KODAK_MANIP_{key}_VERTICAL"])
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if f"KODAK_MANIP_{key}_VERTICAL" in os.environ
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else cls.vertical,
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)
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@dataclass
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class KodakConfig:
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database: DatabaseConfig = field(default_factory=DatabaseConfig.from_env)
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sourcedir: Path = Path.cwd() / "images"
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manipdir: Path = Path.cwd() / "images"
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expose_source: bool = False
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private: bool = False
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manips: Dict[str, ManipConfig] = field(default_factory=dict)
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@classmethod
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def from_env(cls):
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manip_names = set(
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[
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key.replace("KODAK_MANIP_", "").partition("_")[0]
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for key in os.environ.keys()
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if key.startswith("KODAK_MANIP_")
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]
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)
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return cls(
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sourcedir=Path(os.environ.get("KODAK_SOURCEDIR", cls.sourcedir))
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.expanduser()
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.resolve(),
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manipdir=Path(os.environ.get("KODAK_MANIPDIR", cls.manipdir))
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.expanduser()
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.resolve(),
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expose_source=os.getenv(
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"KODAK_EXPOSE_SOURCE", str(cls.expose_source)
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).lower()
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== "true",
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private=os.getenv("KODAK_PRIVATE", str(cls.private)).lower() == "true",
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manips={name.lower(): ManipConfig.from_env(name) for name in manip_names},
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)
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def load() -> KodakConfig:
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try:
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return KodakConfig.from_env()
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except (ValueError, TypeError, IndexError, KeyError) as err:
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raise RuntimeError(err)
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