# coding=utf-8
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2023 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT
import contextlib
from typing import Any, TypedDict, Callable
from threading import Thread, Event
import sqlalchemy as sa
from lvestats.orm import BurstingEventType, bursting_events_table
from ..common import LveId, Timestamp
def init_db_schema(engine: sa.engine.Engine) -> None:
bursting_events_table.create(engine, checkfirst=True)
def drop_db_schema(engine: sa.engine.Engine) -> None:
bursting_events_table.drop(engine, checkfirst=True)
class InBurstingEventRow(TypedDict):
lve_id: LveId
timestamp: Timestamp
event_type: BurstingEventType
@contextlib.contextmanager
def thread_running(name: str, main: Callable[[Event], Any]):
terminate = Event()
(saver_thread := Thread(
name=name,
target=main,
# NOTE(vlebedev): For details regarding how this interacts with termination using "atexit" callback,
# have a look at https://stackoverflow.com/a/58928213/3344105
daemon=True,
args=(terminate,),
)).start()
try:
yield
finally:
terminate.set()
saver_thread.join() |