ee2b2f8f25
Add multi-database support allowing selection between SQL Server and PostgreSQL via database.active config. Changes include dialect-aware SQL generation, cross-database timestamp functions, PostgreSQL connection URL builder, and psycopg dependency. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
95 lines
2.7 KiB
Python
95 lines
2.7 KiB
Python
from pathlib import Path
|
||
from typing import Literal
|
||
from sqlalchemy.engine import URL
|
||
from pydantic import BaseModel
|
||
from pydantic_yaml import parse_yaml_raw_as
|
||
|
||
|
||
class SqlServerConfig(BaseModel):
|
||
"""SQL Server 连接配置"""
|
||
host: str
|
||
port: int = 1433
|
||
database: str
|
||
username: str
|
||
password: str
|
||
driver: str = "{ODBC Driver 18 for SQL Server}"
|
||
trust_server_certificate: str = "yes"
|
||
|
||
|
||
class PostgreSqlConfig(BaseModel):
|
||
"""PostgreSQL 连接配置"""
|
||
host: str
|
||
port: int = 5432
|
||
database: str
|
||
username: str
|
||
password: str
|
||
|
||
|
||
class DatabaseConfig(BaseModel):
|
||
"""数据库配置"""
|
||
active: Literal["sql_server", "postgresql"] = "sql_server"
|
||
sql_server: SqlServerConfig
|
||
postgresql: PostgreSqlConfig | None = None
|
||
|
||
|
||
class Settings(BaseModel):
|
||
"""应用配置"""
|
||
database: DatabaseConfig
|
||
|
||
@property
|
||
def database_url(self) -> URL:
|
||
"""构建数据库连接 URL"""
|
||
if self.database.active == "postgresql":
|
||
return self._postgresql_url()
|
||
return self._sql_server_url()
|
||
|
||
def _sql_server_url(self) -> URL:
|
||
conf = self.database.sql_server
|
||
return URL.create(
|
||
"mssql+pyodbc",
|
||
username=conf.username,
|
||
password=conf.password,
|
||
host=conf.host,
|
||
port=conf.port,
|
||
database=conf.database,
|
||
query={
|
||
"driver": conf.driver.strip("{}"),
|
||
"TrustServerCertificate": conf.trust_server_certificate,
|
||
},
|
||
)
|
||
|
||
def _postgresql_url(self) -> URL:
|
||
conf = self.database.postgresql
|
||
if conf is None:
|
||
raise ValueError("已选择 postgresql，但未配置 database.postgresql")
|
||
return URL.create(
|
||
"postgresql+psycopg",
|
||
username=conf.username,
|
||
password=conf.password,
|
||
host=conf.host,
|
||
port=conf.port,
|
||
database=conf.database,
|
||
)
|
||
|
||
|
||
def load_settings(config_path: str = "config/settings.yaml") -> Settings:
|
||
"""加载 YAML 配置文件"""
|
||
# Resolve relative to the project root (where config/ directory exists)
|
||
path = Path(config_path)
|
||
if not path.is_absolute():
|
||
# __file__ is config/settings.py, so parent.parent gives us project root
|
||
project_root = Path(__file__).resolve().parent.parent
|
||
path = project_root / config_path
|
||
if not path.exists():
|
||
raise FileNotFoundError(
|
||
f"配置文件不存在: {config_path}\n"
|
||
f"请确保文件存在于项目根目录或指定正确路径"
|
||
)
|
||
# Use UTF-8 encoding to avoid Windows GBK encoding issues
|
||
with open(path, "r", encoding="utf-8") as f:
|
||
return parse_yaml_raw_as(Settings, f)
|
||
|
||
|
||
# 全局配置单例
|
||
settings = load_settings()
|