mirror of
https://github.com/zhenxun-org/zhenxun_bot.git
synced 2025-12-15 14:22:55 +08:00
705 lines
24 KiB
Python
705 lines
24 KiB
Python
from collections.abc import Callable
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from datetime import datetime
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from functools import wraps
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import inspect
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from typing import Any, ClassVar, Generic, TypeVar
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from aiocache import Cache as AioCache
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# from aiocache.backends.redis import RedisCache
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from aiocache.base import BaseCache
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from aiocache.serializers import JsonSerializer
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import nonebot
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from nonebot.compat import model_dump
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from nonebot.utils import is_coroutine_callable
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from pydantic import BaseModel, PrivateAttr
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from zhenxun.services.log import logger
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__all__ = ["Cache", "CacheData", "CacheRoot"]
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T = TypeVar("T")
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LOG_COMMAND = "cache"
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driver = nonebot.get_driver()
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class Config(BaseModel):
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redis_host: str | None = None
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"""redis地址"""
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redis_port: int | None = None
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"""redis端口"""
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redis_password: str | None = None
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"""redis密码"""
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redis_expire: int = 600
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"""redis过期时间"""
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config = nonebot.get_plugin_config(Config)
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class DbCacheException(Exception):
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"""缓存相关异常"""
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def __init__(self, info: str):
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self.info = info
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def __str__(self) -> str:
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return self.info
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def validate_name(func: Callable):
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"""验证缓存名称是否存在的装饰器"""
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def wrapper(self, name: str, *args, **kwargs):
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_name = name.upper()
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if _name not in CacheManager._data:
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raise DbCacheException(f"缓存数据 {name} 不存在")
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return func(self, _name, *args, **kwargs)
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return wrapper
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class CacheGetter(BaseModel, Generic[T]):
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"""缓存数据获取器"""
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get_func: Callable[..., Any] | None = None
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get_all_func: Callable[..., Any] | None = None
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async def get(self, cache_data: "CacheData", key: str, *args, **kwargs) -> T:
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"""获取单个缓存数据"""
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if not self.get_func:
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data = await cache_data.get_key(key)
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if cache_data.result_model:
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return cache_data._deserialize_value(data, cache_data.result_model)
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return data
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if is_coroutine_callable(self.get_func):
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data = await self.get_func(cache_data, key, *args, **kwargs)
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else:
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data = self.get_func(cache_data, key, *args, **kwargs)
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if cache_data.result_model:
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return cache_data._deserialize_value(data, cache_data.result_model)
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return data
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async def get_all(self, cache_data: "CacheData", *args, **kwargs) -> dict[str, T]:
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"""获取所有缓存数据"""
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if not self.get_all_func:
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data = await cache_data.get_all_data()
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if cache_data.result_model:
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return {
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k: cache_data._deserialize_value(v, cache_data.result_model)
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for k, v in data.items()
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}
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return data
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if is_coroutine_callable(self.get_all_func):
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data = await self.get_all_func(cache_data, *args, **kwargs)
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else:
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data = self.get_all_func(cache_data, *args, **kwargs)
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if cache_data.result_model:
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return {
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k: cache_data._deserialize_value(v, cache_data.result_model)
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for k, v in data.items()
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}
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return data
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class CacheData(BaseModel):
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"""缓存数据模型"""
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name: str
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func: Callable[..., Any]
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getter: CacheGetter | None = None
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updater: Callable[..., Any] | None = None
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with_refresh: Callable[..., Any] | None = None
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expire: int = 600 # 默认10分钟过期
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reload_count: int = 0
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lazy_load: bool = True # 默认延迟加载
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result_model: type | None = None
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_keys: set[str] = set() # 存储所有缓存键
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_cache: BaseCache | AioCache = PrivateAttr()
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class Config:
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arbitrary_types_allowed = True
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def _deserialize_value(self, value: Any, target_type: type | None = None) -> Any:
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"""反序列化值，将JSON数据转换回原始类型
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参数:
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value: 需要反序列化的值
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target_type: 目标类型，用于指导反序列化
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返回:
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反序列化后的值
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"""
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if value is None:
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return None
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# 如果是字典且指定了目标类型
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if isinstance(value, dict) and target_type:
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# 处理Tortoise-ORM Model
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if hasattr(target_type, "_meta"):
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return self._extracted_from__deserialize_value_19(value, target_type)
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elif hasattr(target_type, "model_validate"):
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return target_type.model_validate(value)
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elif hasattr(target_type, "from_dict"):
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return target_type.from_dict(value)
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elif hasattr(target_type, "parse_obj"):
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return target_type.parse_obj(value)
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else:
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return target_type(**value)
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# 处理列表类型
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if isinstance(value, list):
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if not value:
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return value
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if (
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target_type
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and hasattr(target_type, "__origin__")
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and target_type.__origin__ is list
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):
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item_type = target_type.__args__[0]
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return [self._deserialize_value(item, item_type) for item in value]
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return [self._deserialize_value(item) for item in value]
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# 处理字典类型
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if isinstance(value, dict):
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return {k: self._deserialize_value(v) for k, v in value.items()}
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return value
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def _extracted_from__deserialize_value_19(self, value, target_type):
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# 处理字段值
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processed_value = {}
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for field_name, field_value in value.items():
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if field := target_type._meta.fields_map.get(field_name):
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# 跳过反向关系字段
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if hasattr(field, "_related_name"):
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continue
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processed_value[field_name] = field_value
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logger.debug(f"处理后的值: {processed_value}")
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# 创建模型实例
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instance = target_type()
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# 设置字段值
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for field_name, field_value in processed_value.items():
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if field_name in target_type._meta.fields_map:
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field = target_type._meta.fields_map[field_name]
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# 设置字段值
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try:
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if hasattr(field, "to_python_value"):
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if not field.field_type:
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logger.debug(f"字段 {field_name} 类型为空")
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continue
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field_value = field.to_python_value(field_value)
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setattr(instance, field_name, field_value)
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except Exception as e:
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logger.warning(f"设置字段 {field_name} 失败", e=e)
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# 设置 _saved_in_db 标志
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instance._saved_in_db = True
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return instance
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async def get_data(self) -> Any:
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"""从缓存获取数据"""
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try:
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data = await self._cache.get(self.name)# type: ignore
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logger.debug(f"获取缓存 {self.name} 数据: {data}")
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# 如果数据为空，尝试重新加载
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# if data is None:
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# logger.debug(f"缓存 {self.name} 数据为空，尝试重新加载")
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# try:
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# if self.has_args():
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# new_data = (
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# await self.func()
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# if is_coroutine_callable(self.func)
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# else self.func()
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# )
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# else:
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# new_data = (
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# await self.func()
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# if is_coroutine_callable(self.func)
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# else self.func()
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# )
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# await self.set_data(new_data)
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# self.reload_count += 1
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# logger.info(f"重新加载缓存 {self.name} 完成")
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# return new_data
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# except Exception as e:
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# logger.error(f"重新加载缓存 {self.name} 失败: {e}")
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# return None
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# 使用 result_model 进行反序列化
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if self.result_model:
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return self._deserialize_value(data, self.result_model)
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return data
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except Exception as e:
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logger.error(f"获取缓存 {self.name} 失败: {e}")
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return None
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def _serialize_value(self, value: Any) -> Any:
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"""序列化值，将数据转换为JSON可序列化的格式
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参数:
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value: 需要序列化的值
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返回:
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JSON可序列化的值
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"""
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if value is None:
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return None
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# 处理datetime
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if isinstance(value, datetime):
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return value.isoformat()
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# 处理Tortoise-ORM Model
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if hasattr(value, "_meta") and hasattr(value, "__dict__"):
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result = {}
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for field in value._meta.fields:
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try:
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field_value = getattr(value, field)
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# 跳过反向关系字段
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if isinstance(field_value, list | set) and hasattr(
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field_value, "_related_name"
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):
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continue
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# 跳过外键关系字段
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if hasattr(field_value, "_meta"):
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field_value = getattr(
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field_value, value._meta.fields[field].related_name or "id"
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)
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result[field] = self._serialize_value(field_value)
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except AttributeError:
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continue
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return result
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# 处理Pydantic模型
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elif isinstance(value, BaseModel):
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return model_dump(value)
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elif isinstance(value, dict):
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# 处理字典
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return {str(k): self._serialize_value(v) for k, v in value.items()}
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elif isinstance(value, list | tuple | set):
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# 处理列表、元组、集合
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return [self._serialize_value(item) for item in value]
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elif isinstance(value, int | float | str | bool):
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# 基本类型直接返回
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return value
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else:
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# 其他类型转换为字符串
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return str(value)
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async def set_data(self, value: Any):
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"""设置缓存数据"""
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try:
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# 1. 序列化数据
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serialized_value = self._serialize_value(value)
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logger.debug(f"设置缓存 {self.name} 原始数据: {value}")
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logger.debug(f"设置缓存 {self.name} 序列化后数据: {serialized_value}")
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# 2. 删除旧数据
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await self._cache.delete(self.name)# type: ignore
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logger.debug(f"删除缓存 {self.name} 旧数据")
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# 3. 设置新数据
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await self._cache.set(self.name, serialized_value, ttl=self.expire)# type: ignore
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logger.debug(f"设置缓存 {self.name} 新数据完成")
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except Exception as e:
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logger.error(f"设置缓存 {self.name} 失败: {e}")
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raise # 重新抛出异常，让上层处理
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async def delete_data(self):
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"""删除缓存数据"""
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try:
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await self._cache.delete(self.name)# type: ignore
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except Exception as e:
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logger.error(f"删除缓存 {self.name}", e=e)
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async def get(self, key: str, *args, **kwargs) -> Any:
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"""获取缓存"""
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if not self.reload_count and not self.lazy_load:
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await self.reload(*args, **kwargs)
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if not self.getter:
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return await self.get_key(key)
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return await self.getter.get(self, key, *args, **kwargs)
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async def get_all(self, *args, **kwargs) -> dict[str, Any]:
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"""获取所有缓存数据"""
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if not self.reload_count and not self.lazy_load:
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await self.reload(*args, **kwargs)
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if not self.getter:
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return await self.get_all_data()
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return await self.getter.get_all(self, *args, **kwargs)
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async def update(self, key: str, value: Any = None, *args, **kwargs):
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"""更新单个缓存项"""
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if not self.updater:
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logger.warning(f"缓存 {self.name} 未配置更新方法")
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return
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current_data = await self.get_key(key) or {}
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if is_coroutine_callable(self.updater):
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await self.updater(current_data, key, value, *args, **kwargs)
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else:
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self.updater(current_data, key, value, *args, **kwargs)
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await self.set_key(key, current_data)
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logger.debug(f"更新缓存 {self.name}.{key}")
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async def refresh(self, *args, **kwargs):
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"""刷新缓存数据"""
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if not self.with_refresh:
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return await self.reload(*args, **kwargs)
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current_data = await self.get_data()
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if current_data:
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if is_coroutine_callable(self.with_refresh):
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await self.with_refresh(current_data, *args, **kwargs)
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else:
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self.with_refresh(current_data, *args, **kwargs)
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await self.set_data(current_data)
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logger.debug(f"刷新缓存 {self.name}")
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async def reload(self, *args, **kwargs):
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"""重新加载全部数据"""
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try:
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if self.has_args():
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new_data = (
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await self.func(*args, **kwargs)
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if is_coroutine_callable(self.func)
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else self.func(*args, **kwargs)
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)
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else:
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new_data = (
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await self.func()
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if is_coroutine_callable(self.func)
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else self.func()
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)
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# 如果是字典，则分别存储每个键值对
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if isinstance(new_data, dict):
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for key, value in new_data.items():
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await self.set_key(key, value)
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else:
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# 如果不是字典，则存储为单个键值对
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await self.set_key("default", new_data)
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self.reload_count += 1
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logger.info(f"重新加载缓存 {self.name} 完成")
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except Exception as e:
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logger.error(f"重新加载缓存 {self.name} 失败: {e}")
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raise
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def has_args(self) -> bool:
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"""检查函数是否需要参数"""
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sig = inspect.signature(self.func)
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return any(
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param.kind
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in (
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param.POSITIONAL_OR_KEYWORD,
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param.POSITIONAL_ONLY,
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param.VAR_POSITIONAL,
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)
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for param in sig.parameters.values()
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)
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async def get_key(self, key: str) -> Any:
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"""获取缓存中指定键的数据
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参数:
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key: 要获取的键名
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返回:
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键对应的值，如果不存在返回None
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"""
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cache_key = self._get_cache_key(key)
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try:
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data = await self._cache.get(cache_key)# type: ignore
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logger.debug(f"获取缓存 {cache_key} 数据: {data}")
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if self.result_model:
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return self._deserialize_value(data, self.result_model)
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return data
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except Exception as e:
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logger.error(f"获取缓存 {cache_key} 失败: {e}")
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return None
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async def get_keys(self, keys: list[str]) -> dict[str, Any]:
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"""获取缓存中多个键的数据
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参数:
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keys: 要获取的键名列表
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返回:
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包含所有请求键值的字典，不存在的键值为None
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"""
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try:
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data = await self.get_data()
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if isinstance(data, dict):
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return {key: data.get(key) for key in keys}
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return dict.fromkeys(keys)
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except Exception as e:
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logger.error(f"获取缓存 {self.name} 的多个键失败: {e}")
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return dict.fromkeys(keys)
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def _get_cache_key(self, key: str) -> str:
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"""获取缓存键名"""
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return f"{self.name}:{key}"
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async def get_all_data(self) -> dict[str, Any]:
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"""获取所有缓存数据"""
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try:
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result = {}
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for key in self._keys:
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# 提取原始键名（去掉前缀）
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original_key = key.split(":", 1)[1]
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data = await self._cache.get(key)# type: ignore
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if self.result_model:
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result[original_key] = self._deserialize_value(
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data, self.result_model
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)
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else:
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result[original_key] = data
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return result
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except Exception as e:
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logger.error(f"获取所有缓存数据失败: {e}")
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return {}
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async def set_key(self, key: str, value: Any):
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"""设置指定键的缓存数据"""
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cache_key = self._get_cache_key(key)
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try:
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serialized_value = self._serialize_value(value)
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await self._cache.set(cache_key, serialized_value, ttl=self.expire)# type: ignore
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self._keys.add(cache_key) # 添加到键列表
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logger.debug(f"设置缓存 {cache_key} 数据完成")
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except Exception as e:
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logger.error(f"设置缓存 {cache_key} 失败: {e}")
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raise
|
||
|
||
async def delete_key(self, key: str):
|
||
"""删除指定键的缓存数据"""
|
||
cache_key = self._get_cache_key(key)
|
||
try:
|
||
await self._cache.delete(cache_key)# type: ignore
|
||
self._keys.discard(cache_key) # 从键列表中移除
|
||
logger.debug(f"删除缓存 {cache_key} 完成")
|
||
except Exception as e:
|
||
logger.error(f"删除缓存 {cache_key} 失败: {e}")
|
||
|
||
async def clear(self):
|
||
"""清除所有缓存数据"""
|
||
try:
|
||
for key in list(self._keys): # 使用列表复制避免在迭代时修改
|
||
await self._cache.delete(key)# type: ignore
|
||
self._keys.clear()
|
||
logger.debug(f"清除缓存 {self.name} 完成")
|
||
except Exception as e:
|
||
logger.error(f"清除缓存 {self.name} 失败: {e}")
|
||
|
||
|
||
class CacheManager:
|
||
"""全局缓存管理器"""
|
||
|
||
_cache_instance: BaseCache | AioCache | None = None
|
||
_data: ClassVar[dict[str, CacheData]] = {}
|
||
|
||
@property
|
||
def _cache(self) -> BaseCache | AioCache:
|
||
"""获取aiocache实例"""
|
||
if self._cache_instance is None:
|
||
if config.redis_host:
|
||
self._cache_instance = AioCache(
|
||
AioCache.REDIS,# type: ignore
|
||
serializer=JsonSerializer(),
|
||
namespace="zhenxun_cache",
|
||
timeout=30, # 操作超时时间
|
||
ttl=config.redis_expire, # 设置默认过期时间
|
||
endpoint=config.redis_host,
|
||
port=config.redis_port,
|
||
password=config.redis_password,
|
||
)
|
||
else:
|
||
self._cache_instance = AioCache(
|
||
AioCache.MEMORY,
|
||
serializer=JsonSerializer(),
|
||
namespace="zhenxun_cache",
|
||
timeout=30, # 操作超时时间
|
||
ttl=config.redis_expire, # 设置默认过期时间
|
||
)
|
||
logger.info("初始化缓存完成...", LOG_COMMAND)
|
||
return self._cache_instance
|
||
|
||
async def close(self):
|
||
if self._cache_instance:
|
||
await self._cache_instance.close()# type: ignore
|
||
|
||
async def verify_connection(self):
|
||
"""连接测试"""
|
||
try:
|
||
await self._cache.get("__test__")# type: ignore
|
||
except Exception as e:
|
||
logger.error("连接失败", LOG_COMMAND, e=e)
|
||
raise
|
||
|
||
async def init_non_lazy_caches(self):
|
||
"""初始化所有非延迟加载的缓存"""
|
||
await self.verify_connection()
|
||
for name, cache in self._data.items():
|
||
cache._cache = self._cache
|
||
if not cache.lazy_load:
|
||
try:
|
||
await cache.reload()
|
||
logger.info(f"初始化缓存 {name} 完成")
|
||
except Exception as e:
|
||
logger.error(f"初始化缓存 {name} 失败: {e}")
|
||
|
||
def new(self, name: str, lazy_load: bool = True, expire: int = 600):
|
||
"""注册新缓存
|
||
|
||
参数:
|
||
name: 缓存名称
|
||
lazy_load: 是否延迟加载，默认为True。为False时会在程序启动时自动加载
|
||
expire: 过期时间（秒）
|
||
"""
|
||
|
||
def new(self, name: str, lazy_load: bool = True, expire: int = 600):
|
||
def wrapper(func: Callable):
|
||
_name = name.upper()
|
||
if _name in self._data:
|
||
raise DbCacheException(f"缓存 {name} 已存在")
|
||
|
||
|
||
cache_data = CacheData(
|
||
name=_name,
|
||
func=func,
|
||
expire=expire,
|
||
lazy_load=lazy_load,
|
||
)
|
||
cache_data._cache = self._cache
|
||
self._data[_name] = cache_data
|
||
return func
|
||
|
||
return wrapper
|
||
|
||
def listener(self, name: str):
|
||
"""创建缓存监听器"""
|
||
|
||
def decorator(func):
|
||
@wraps(func)
|
||
async def wrapper(*args, **kwargs):
|
||
try:
|
||
return (
|
||
await func(*args, **kwargs)
|
||
if is_coroutine_callable(func)
|
||
else func(*args, **kwargs)
|
||
)
|
||
finally:
|
||
cache = self._data.get(name.upper())
|
||
if cache and cache.with_refresh:
|
||
await cache.refresh()
|
||
logger.debug(f"监听器触发缓存 {name} 刷新")
|
||
|
||
return wrapper
|
||
|
||
return decorator
|
||
|
||
@validate_name
|
||
def updater(self, name: str):
|
||
"""设置缓存更新方法"""
|
||
|
||
def wrapper(func: Callable):
|
||
self._data[name].updater = func
|
||
return func
|
||
|
||
return wrapper
|
||
|
||
@validate_name
|
||
def getter(self, name: str, result_model: type):
|
||
"""设置缓存获取方法"""
|
||
|
||
def wrapper(func: Callable):
|
||
self._data[name].getter = CacheGetter[result_model](get_func=func)
|
||
self._data[name].result_model = result_model
|
||
return func
|
||
|
||
return wrapper
|
||
|
||
@validate_name
|
||
def with_refresh(self, name: str):
|
||
"""设置缓存刷新方法"""
|
||
|
||
def wrapper(func: Callable):
|
||
self._data[name].with_refresh = func
|
||
return func
|
||
|
||
return wrapper
|
||
|
||
async def get_cache_data(self, name: str) -> Any | None:
|
||
"""获取缓存数据"""
|
||
cache = await self.get_cache(name.upper())
|
||
return await cache.get_data() if cache else None
|
||
|
||
async def get_cache(self, name: str) -> CacheData | None:
|
||
"""获取缓存对象"""
|
||
return self._data.get(name.upper())
|
||
|
||
async def get(self, name: str, *args, **kwargs) -> Any:
|
||
"""获取缓存内容"""
|
||
cache = await self.get_cache(name.upper())
|
||
return await cache.get(*args, **kwargs) if cache else None
|
||
|
||
async def update(self, name: str, key: str, value: Any = None, *args, **kwargs):
|
||
"""更新缓存项"""
|
||
cache = await self.get_cache(name.upper())
|
||
if cache:
|
||
await cache.update(key, value, *args, **kwargs)
|
||
|
||
async def reload(self, name: str, *args, **kwargs):
|
||
"""重新加载缓存"""
|
||
cache = await self.get_cache(name.upper())
|
||
if cache:
|
||
await cache.reload(*args, **kwargs)
|
||
|
||
|
||
# 全局缓存管理器实例
|
||
CacheRoot = CacheManager()
|
||
|
||
|
||
class Cache(Generic[T]):
|
||
"""类型化缓存访问接口"""
|
||
|
||
def __init__(self, module: str):
|
||
self.module = module.upper()
|
||
|
||
async def get(self, *args, **kwargs) -> T | None:
|
||
"""获取缓存"""
|
||
return await CacheRoot.get(self.module, *args, **kwargs)
|
||
|
||
async def update(self, key: str, value: Any = None, *args, **kwargs):
|
||
"""更新缓存项"""
|
||
await CacheRoot.update(self.module, key, value, *args, **kwargs)
|
||
|
||
async def reload(self, *args, **kwargs):
|
||
"""重新加载缓存"""
|
||
await CacheRoot.reload(self.module, *args, **kwargs)
|
||
|
||
|
||
@driver.on_shutdown
|
||
async def _():
|
||
await CacheRoot.close()
|