2024-10-06 02:39:10 +08:00
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"""
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该模块用于常用配置文件的加载
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多配置文件编写原则:
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1. 尽量不要冲突: 一个键不要多次出现
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2. 分工明确: 每个配置文件给一个或一类服务提供配置
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3. 扁平化编写: 配置文件尽量扁平化,不要出现过多的嵌套
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4. 注意冲突时的优先级: 项目目录下的配置文件优先级高于config目录下的配置文件
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5. 请不要将需要动态加载的内容写入配置文件,你应该使用其他储存方式
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"""
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2024-08-12 11:44:30 +08:00
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2024-10-06 02:39:10 +08:00
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import os
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import json
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import copy
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import toml
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2024-08-12 11:44:30 +08:00
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import yaml
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2024-10-06 02:39:10 +08:00
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from typing import Any
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from liteyuki.log import logger
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_SUPPORTED_CONFIG_FORMATS = (".yaml", ".yml", ".json", ".toml")
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def flat_config(config: dict[str, Any]) -> dict[str, Any]:
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"""
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扁平化配置文件
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{a:{b:{c:1}}} -> {"a.b.c": 1}
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Args:
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config: 配置项目
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Returns:
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扁平化后的配置文件,但也包含原有的键值对
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"""
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new_config = copy.deepcopy(config)
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for key, value in config.items():
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if isinstance(value, dict):
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for k, v in flat_config(value).items():
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new_config[f"{key}.{k}"] = v
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return new_config
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def load_from_yaml(file_: str) -> dict[str, Any]:
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"""
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Load config from yaml file
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"""
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logger.debug("正在从 {} 中加载 YAML 配置".format(file_))
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config = yaml.safe_load(open(file_, "r", encoding="utf-8"))
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return flat_config(config if config is not None else {})
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2024-08-12 11:44:30 +08:00
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2024-10-06 02:39:10 +08:00
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def load_from_json(file_: str) -> dict[str, Any]:
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"""
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Load config from json file
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"""
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logger.debug("正在从 {} 中加载 JSON 配置".format(file_))
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config = json.load(open(file_, "r", encoding="utf-8"))
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return flat_config(config if config is not None else {})
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2024-08-12 11:44:30 +08:00
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2024-10-06 02:39:10 +08:00
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def load_from_toml(file_: str) -> dict[str, Any]:
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"""
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Load config from toml file
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"""
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logger.debug("正在从 {} 中加载 TOML 配置".format(file_))
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config = toml.load(open(file_, "r", encoding="utf-8"))
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return flat_config(config if config is not None else {})
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2024-08-12 11:44:30 +08:00
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2024-10-06 02:39:10 +08:00
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def load_from_files(*files: str, no_warning: bool = False) -> dict[str, Any]:
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"""
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从指定文件加载配置项,会自动识别文件格式
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默认执行扁平化选项
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"""
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config = {}
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for file in files:
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if os.path.exists(file):
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if file.endswith((".yaml", "yml")):
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config.update(load_from_yaml(file))
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elif file.endswith(".json"):
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config.update(load_from_json(file))
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elif file.endswith(".toml"):
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config.update(load_from_toml(file))
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else:
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if not no_warning:
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logger.warning(f"不支持配置文件 {file} 的类型")
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else:
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if not no_warning:
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logger.warning(f"配置文件 {file} 未寻得")
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return config
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2024-08-12 11:44:30 +08:00
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2024-10-06 02:39:10 +08:00
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def load_configs_from_dirs(
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*directories: str, no_waring: bool = False
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) -> dict[str, Any]:
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"""
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从目录下加载配置文件,不递归
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按照读取文件的优先级反向覆盖
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默认执行扁平化选项
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"""
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config = {}
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for directory in directories:
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if not os.path.exists(directory):
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if not no_waring:
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logger.warning(f"目录 {directory} 未寻得")
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continue
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for file in os.listdir(directory):
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if file.endswith(_SUPPORTED_CONFIG_FORMATS):
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config.update(
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load_from_files(os.path.join(directory, file), no_warning=no_waring)
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)
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return config
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2024-08-12 11:44:30 +08:00
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2024-10-06 02:39:10 +08:00
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def load_config_in_default(no_waring: bool = False) -> dict[str, Any]:
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"""
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从一个标准的轻雪项目加载配置文件
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项目目录下的config.*和config目录下的所有配置文件
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项目目录下的配置文件优先
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"""
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config = load_configs_from_dirs("config", no_waring=no_waring)
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config.update(
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load_from_files(
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"config.yaml",
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"config.toml",
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"config.json",
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"config.yml",
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no_warning=no_waring,
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)
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)
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return config
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