57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
from typing import Optional
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from sqlalchemy import engine, create_engine
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from sqlalchemy.orm import Session, sessionmaker
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from sh_edraft.database.connection.base.database_connection_base import DatabaseConnectionBase
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from sh_edraft.database.model.database_settings import DatabaseSettings
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from sh_edraft.console.console import Console
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from sh_edraft.console.model.foreground_color import ForegroundColor
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class DatabaseConnection(DatabaseConnectionBase):
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def __init__(self, database_settings: DatabaseSettings):
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DatabaseConnectionBase.__init__(self)
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self._db_settings = database_settings
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self._engine: Optional[engine] = None
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self._session: Optional[Session] = None
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self._credentials: Optional[str] = None
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@property
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def engine(self) -> engine:
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return self._engine
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@property
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def session(self) -> Session:
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return self._session
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def connect(self, connection_string: str):
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try:
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self._engine = create_engine(connection_string)
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if self._db_settings.encoding is not None:
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self._engine.encoding = self._db_settings.encoding
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if self._db_settings.case_sensitive is not None:
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self._engine.case_sensitive = self._db_settings.case_sensitive
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if self._db_settings.echo is not None:
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self._engine.echo = self._db_settings.echo
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self._engine.connect()
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db_session = sessionmaker(bind=self._engine)
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self._session = db_session()
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Console.set_foreground_color(ForegroundColor.green)
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Console.write_line(f'[{__name__}] Connected to database')
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Console.set_foreground_color(ForegroundColor.default)
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except Exception as e:
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Console.set_foreground_color(ForegroundColor.red)
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Console.write_line(f'[{__name__}] Database connection failed -> {e}')
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Console.set_foreground_color(ForegroundColor.default)
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exit()
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