classes.py

import dataclasses
import pathlib
 
 
@dataclasses.dataclass(frozen=True)
class ConnectionInfo:
    """Clickhouse connection parameters"""
 
    host: str
    tcp_port: int
    http_port: int
    dbname: str | None = None
 
    def replace(self, **kwargs) -> 'ConnectionInfo':
        """Returns new instance with attrs updated"""
        return dataclasses.replace(self, **kwargs)
 
 
@dataclasses.dataclass(frozen=True)
class DatabaseConfig:
    dbname: str
    migrations: list[pathlib.Path]
 
 
DatabasesDict = dict[str, DatabaseConfig]