108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
import json
|
|
import math
|
|
import time
|
|
|
|
from typing import Any, Callable, Dict, TypeVar
|
|
from sqlalchemy import exc, event, Engine
|
|
from sqlalchemy import inspect, Column, Integer, create_engine, JSON
|
|
from sqlalchemy.ext.declarative import declarative_base
|
|
from sqlalchemy.orm import Session, configure_mappers
|
|
from sqlalchemy.sql.schema import Table
|
|
from sqlalchemy_searchable import make_searchable
|
|
|
|
from services.logger import root_logger as logger
|
|
from settings import DB_URL
|
|
import warnings
|
|
import traceback
|
|
|
|
# Подключение к базе данных SQLAlchemy
|
|
engine = create_engine(DB_URL, echo=False, pool_size=10, max_overflow=20)
|
|
inspector = inspect(engine)
|
|
configure_mappers()
|
|
T = TypeVar('T')
|
|
REGISTRY: Dict[str, type] = {}
|
|
FILTERED_FIELDS = ['_sa_instance_state', 'search_vector']
|
|
|
|
|
|
# noinspection PyUnusedLocal
|
|
def local_session(src=''):
|
|
return Session(bind=engine, expire_on_commit=False)
|
|
|
|
|
|
class Base(declarative_base()):
|
|
__table__: Table
|
|
__tablename__: str
|
|
__new__: Callable
|
|
__init__: Callable
|
|
__allow_unmapped__ = True
|
|
__abstract__ = True
|
|
__table_args__ = {'extend_existing': True}
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
|
|
def __init_subclass__(cls, **kwargs):
|
|
REGISTRY[cls.__name__] = cls
|
|
|
|
def dict(self) -> Dict[str, Any]:
|
|
column_names = filter(
|
|
lambda x: x not in FILTERED_FIELDS, self.__table__.columns.keys()
|
|
)
|
|
try:
|
|
data = {}
|
|
for c in column_names:
|
|
value = getattr(self, c)
|
|
if isinstance(value, JSON):
|
|
# save JSON column as dict
|
|
data[c] = json.loads(str(value))
|
|
else:
|
|
data[c] = value
|
|
# Add synthetic field .stat
|
|
if hasattr(self, 'stat'):
|
|
data['stat'] = self.stat
|
|
return data
|
|
except Exception as e:
|
|
logger.error(f'Error occurred while converting object to dictionary: {e}')
|
|
return {}
|
|
|
|
def update(self, values: Dict[str, Any]) -> None:
|
|
for key, value in values.items():
|
|
if hasattr(self, key):
|
|
setattr(self, key, value)
|
|
|
|
|
|
make_searchable(Base.metadata)
|
|
Base.metadata.create_all(bind=engine)
|
|
|
|
|
|
# Функция для вывода полного трейсбека при предупреждениях
|
|
def warning_with_traceback(
|
|
message: Warning | str, category, filename: str, lineno: int, file=None, line=None
|
|
):
|
|
tb = traceback.format_stack()
|
|
tb_str = ''.join(tb)
|
|
return f'{message} ({filename}, {lineno}): {category.__name__}\n{tb_str}'
|
|
|
|
|
|
# Установка функции вывода трейсбека для предупреждений SQLAlchemy
|
|
warnings.showwarning = warning_with_traceback
|
|
warnings.simplefilter('always', exc.SAWarning)
|
|
|
|
|
|
@event.listens_for(Engine, 'before_cursor_execute')
|
|
def before_cursor_execute(conn, cursor, statement, parameters, context, executemany):
|
|
conn.query_start_time = time.time()
|
|
conn.last_statement = ''
|
|
|
|
|
|
@event.listens_for(Engine, 'after_cursor_execute')
|
|
def after_cursor_execute(conn, cursor, statement, parameters, context, executemany):
|
|
compiled_statement = context.compiled.string
|
|
compiled_parameters = context.compiled.params
|
|
if compiled_statement:
|
|
elapsed = time.time() - conn.query_start_time
|
|
query = compiled_statement % compiled_parameters
|
|
|
|
if elapsed > 1 and conn.last_statement != query:
|
|
conn.last_statement = query
|
|
logger.debug(f"\n{query}\n{'*' * math.floor(elapsed)} {elapsed:.3f} s\n")
|