async def _init_nosql_dbs(app: web.Application) -> web.Application:
"""
Wrapper over initializing dbase.
:param app: an instance of aiohttp application.
:return: an instance of aiohttp application with updates.
"""
###
# Create connection to databases
NoSQLDatabases = type(
'NoSQLDatabases', (SimpleNamespace,), {'mongo': None, 'influx': None}
)
app.dbs = NoSQLDatabases()
cfg = deep_get(app.shared.extras, 'dbs.mongo', {})
app.dbs.mongo = MongosDBClient(**cfg, loop=app.loop)
cfg = deep_get(app.shared.extras, 'dbs.influx', {})
app.dbs.influx = InfluxDBClient(**cfg, loop=app.loop)
aws: Tuple[
Union[Awaitable[_Returns_co], Callable[..., _Returns_co]], ...] = (
app.dbs.mongo.ping(), app.dbs.influx.ping(),
)
pings = await asyncio.gather(*aws, loop=app.loop, return_exceptions=True)
###
# Attention! I apologize in advance, but the code that was in this place I had
# to remove that it would be completely not to violate NDA.
# ¯\_(ツ)_/¯
# Thanks for understanding!
return app
