24024
af7c11d7f9
- 新增图像生成接口，支持试用、积分和自定义API Key模式 - 实现生成图片结果异步上传至MinIO存储，带重试机制 - 优化积分预扣除和异常退还逻辑，保障用户积分准确 - 添加获取生成历史记录接口，支持时间范围和分页 - 提供本地字典配置接口，支持模型、比例、提示模板和尺寸 - 实现图片批量上传接口，支持S3兼容对象存储 feat(admin): 增加管理员角色管理与权限分配接口 - 实现角色列表查询、角色创建、更新及删除功能 - 增加权限列表查询接口 - 实现用户角色分配接口，便于统一管理用户权限 - 增加系统字典增删查改接口，支持分类过滤和排序 - 权限控制全面覆盖管理接口，保证安全访问 feat(auth): 完善用户登录注册及权限相关接口与页面 - 实现手机号验证码发送及校验功能，保障注册安全 - 支持手机号注册、登录及退出接口，集成日志记录 - 增加修改密码功能，验证原密码后更新 - 提供动态导航菜单接口，基于权限展示不同菜单 - 实现管理界面路由及日志、角色、字典管理页面访问权限控制 - 添加系统日志查询接口，支持关键词和等级筛选 feat(app): 初始化Flask应用并配置蓝图与数据库 - 创建应用程序工厂，加载配置，初始化数据库和Redis客户端 - 注册认证、API及管理员蓝图，整合路由 - 根路由渲染主页模板 - 应用上下文中自动创建数据库表，保证运行环境准备完毕 feat(database): 提供数据库创建与迁移支持脚本 - 新增数据库创建脚本，支持自动检测是否已存在 - 添加数据库表初始化脚本，支持创建和删除所有表 - 实现RBAC权限初始化，包含基础权限和角色创建 - 新增字段手动修复脚本，添加用户API Key和积分字段 - 强制迁移脚本支持清理连接和修复表结构，初始化默认数据及角色分配 feat(config): 新增系统配置参数 - 配置数据库、Redis、Session和MinIO相关参数 - 添加AI接口地址及试用Key配置 - 集成阿里云短信服务配置及开发模式相关参数 feat(extensions): 初始化数据库、Redis和MinIO客户端 - 创建全局SQLAlchemy数据库实例和Redis客户端 - 配置基于boto3的MinIO兼容S3客户端 chore(logs): 添加示例系统日志文件 - 记录用户请求、验证码发送成功与失败的日志信息
126 lines
3.5 KiB
Python
126 lines
3.5 KiB
Python
import time
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from abc import ABC, abstractmethod
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from redis.asyncio.multidb.database import AsyncDatabase, Databases
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from redis.data_structure import WeightedList
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from redis.multidb.circuit import State as CBState
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from redis.multidb.exception import (
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NoValidDatabaseException,
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TemporaryUnavailableException,
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)
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DEFAULT_FAILOVER_ATTEMPTS = 10
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DEFAULT_FAILOVER_DELAY = 12
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class AsyncFailoverStrategy(ABC):
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@abstractmethod
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async def database(self) -> AsyncDatabase:
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"""Select the database according to the strategy."""
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pass
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@abstractmethod
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def set_databases(self, databases: Databases) -> None:
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"""Set the database strategy operates on."""
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pass
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class FailoverStrategyExecutor(ABC):
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@property
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@abstractmethod
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def failover_attempts(self) -> int:
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"""The number of failover attempts."""
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pass
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@property
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@abstractmethod
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def failover_delay(self) -> float:
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"""The delay between failover attempts."""
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pass
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@property
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@abstractmethod
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def strategy(self) -> AsyncFailoverStrategy:
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"""The strategy to execute."""
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pass
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@abstractmethod
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async def execute(self) -> AsyncDatabase:
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"""Execute the failover strategy."""
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pass
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class WeightBasedFailoverStrategy(AsyncFailoverStrategy):
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"""
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Failover strategy based on database weights.
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"""
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def __init__(self):
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self._databases = WeightedList()
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async def database(self) -> AsyncDatabase:
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for database, _ in self._databases:
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if database.circuit.state == CBState.CLOSED:
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return database
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raise NoValidDatabaseException("No valid database available for communication")
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def set_databases(self, databases: Databases) -> None:
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self._databases = databases
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class DefaultFailoverStrategyExecutor(FailoverStrategyExecutor):
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"""
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Executes given failover strategy.
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"""
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def __init__(
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self,
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strategy: AsyncFailoverStrategy,
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failover_attempts: int = DEFAULT_FAILOVER_ATTEMPTS,
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failover_delay: float = DEFAULT_FAILOVER_DELAY,
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):
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self._strategy = strategy
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self._failover_attempts = failover_attempts
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self._failover_delay = failover_delay
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self._next_attempt_ts: int = 0
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self._failover_counter: int = 0
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@property
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def failover_attempts(self) -> int:
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return self._failover_attempts
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@property
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def failover_delay(self) -> float:
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return self._failover_delay
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@property
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def strategy(self) -> AsyncFailoverStrategy:
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return self._strategy
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async def execute(self) -> AsyncDatabase:
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try:
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database = await self._strategy.database()
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self._reset()
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return database
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except NoValidDatabaseException as e:
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if self._next_attempt_ts == 0:
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self._next_attempt_ts = time.time() + self._failover_delay
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self._failover_counter += 1
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elif time.time() >= self._next_attempt_ts:
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self._next_attempt_ts += self._failover_delay
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self._failover_counter += 1
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if self._failover_counter > self._failover_attempts:
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self._reset()
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raise e
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else:
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raise TemporaryUnavailableException(
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"No database connections currently available. "
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"This is a temporary condition - please retry the operation."
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)
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def _reset(self) -> None:
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self._next_attempt_ts = 0
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self._failover_counter = 0
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