调整部分前端布局和后端增删改逻辑
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from contextlib import asynccontextmanager
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from typing import Any
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from cli.exit_codes import REDIS_ERROR, RUNTIME_ERROR
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from .gateway import CacheInfrastructureGateway
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class CacheDomainSupport:
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"""
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缓存领域支持对象。
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该对象负责缓存名称列表构建、键范围解析和 TTL 结果判定等
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局部缓存规则,避免主运行时服务继续承载细碎领域判断。
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:param infrastructure_gateway: 缓存基础设施网关
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"""
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def __init__(self, infrastructure_gateway: CacheInfrastructureGateway) -> None:
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"""
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初始化缓存领域支持对象。
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:param infrastructure_gateway: 缓存基础设施网关
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:return: None
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"""
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self.infrastructure_gateway = infrastructure_gateway
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def build_cache_name_items(self) -> list[dict[str, Any]]:
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"""
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构建系统内置缓存名称列表。
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:return: 缓存名称列表
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"""
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redis_init_key_config = self.infrastructure_gateway.get_redis_init_key_config()
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return [
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{
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'cacheName': key_config.key,
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'remark': key_config.remark,
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}
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for key_config in redis_init_key_config
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]
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@staticmethod
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def build_full_cache_key(cache_name: str, cache_key: str) -> str:
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"""
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构建缓存完整键名。
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:param cache_name: 缓存名称
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:param cache_key: 缓存键名
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:return: 完整缓存键名
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"""
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return f'{cache_name}:{cache_key}'
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def build_missing_cache_result(self, cache_name: str, cache_key: str) -> dict[str, Any]:
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"""
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构建缓存不存在的统一结果。
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:param cache_name: 缓存名称
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:param cache_key: 缓存键名
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:return: 缓存不存在结果
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"""
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full_cache_key = self.build_full_cache_key(cache_name, cache_key)
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return {
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'ok': False,
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'message': f'缓存不存在:{full_cache_key}',
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'cacheName': cache_name,
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'cacheKey': cache_key,
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'fullCacheKey': full_cache_key,
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'exit_code': RUNTIME_ERROR,
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}
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@staticmethod
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def build_cache_name_pattern(cache_name: str) -> str:
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"""
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构建按缓存名称扫描时使用的 Redis 键模式。
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:param cache_name: 缓存名称
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:return: Redis 键匹配模式
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"""
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return f'{cache_name}:*'
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@staticmethod
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def extract_cache_key_items(cache_name: str, cache_keys: list[str]) -> list[str]:
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"""
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从缓存完整键名列表中提取相对键名。
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:param cache_name: 缓存名称
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:param cache_keys: 完整缓存键名列表
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:return: 相对键名列表
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"""
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return [key.split(':', 1)[1] for key in sorted(cache_keys) if key.startswith(f'{cache_name}:')]
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@staticmethod
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def build_clear_scope(
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*,
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cache_name: str,
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cache_key: str,
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clear_all: bool,
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) -> dict[str, str]:
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"""
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构建缓存清理范围定义。
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:param cache_name: 缓存名称
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:param cache_key: 缓存键名片段
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:param clear_all: 是否清理全部缓存
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:return: 清理范围定义
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"""
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if clear_all:
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return {'mode': 'all'}
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if cache_name:
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return {'mode': 'cacheName', 'cacheName': cache_name}
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return {'mode': 'cacheKey', 'cacheKey': cache_key}
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class CacheRedisSupport:
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"""
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缓存 Redis 访问支持对象。
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该对象负责 Redis 连接生命周期、错误结果规整和缓存键模式拼装,
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避免主运行时服务继续承载基础设施桥接细节。
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:param infrastructure_gateway: 缓存基础设施网关
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:param domain_support: 缓存领域支持对象
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"""
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def __init__(
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self,
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infrastructure_gateway: CacheInfrastructureGateway,
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domain_support: CacheDomainSupport,
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) -> None:
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"""
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初始化缓存 Redis 访问支持对象。
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:param infrastructure_gateway: 缓存基础设施网关
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:param domain_support: 缓存领域支持对象
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:return: None
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"""
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self.infrastructure_gateway = infrastructure_gateway
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self.domain_support = domain_support
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@asynccontextmanager
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async def redis_session(self) -> Any:
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"""
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创建并托管 Redis 会话。
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:return: `(redis, redis_util)` 元组
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"""
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redis = None
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redis_util = self.infrastructure_gateway.get_redis_util()
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try:
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redis = await redis_util.create_redis_pool(log_enabled=False)
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yield redis, redis_util
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finally:
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if redis is not None:
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await redis.close()
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@staticmethod
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def build_redis_error_result(message: str, exc: Exception) -> dict[str, Any]:
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"""
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构建统一 Redis 异常结果。
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:param message: 失败消息
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:param exc: 原始异常
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:return: 标准失败结果
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"""
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return {
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'ok': False,
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'message': message,
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'error': str(exc),
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'exit_code': REDIS_ERROR,
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}
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def build_cache_name_keys_pattern(self, cache_name: str) -> str:
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"""
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构建按缓存名称读取键列表时使用的模式。
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:param cache_name: 缓存名称
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:return: Redis 键匹配模式
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"""
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return self.domain_support.build_cache_name_pattern(cache_name)
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def build_clear_target_pattern(
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self,
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*,
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cache_name: str,
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cache_key: str,
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clear_all: bool,
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) -> str | None:
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"""
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构建缓存清理目标的 Redis 键匹配模式。
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:param cache_name: 缓存名称
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:param cache_key: 缓存键名片段
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:param clear_all: 是否清理全部缓存
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:return: Redis 键匹配模式;全部清理时返回 `None`
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"""
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if clear_all:
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return None
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if cache_name:
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return self.domain_support.build_cache_name_pattern(cache_name)
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return f'*{cache_key}'
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