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import asyncio
import time
from contextlib import suppress
from datetime import timedelta
from logging import getLogger
from typing import Union
from defence360agent.contracts.messages import MessageType
from defence360agent.contracts.plugins import MessageSource
from defence360agent.subsys.backup_systems import (
get_current_backend,
get_last_backup_timestamp,
)
from defence360agent.subsys.persistent_state import load_state, save_state
from defence360agent.utils import Scope, recurring_check
logger = getLogger(__name__)
SEND_INTERVAL = int(timedelta(hours=24).total_seconds())
RECURRING_CHECK_INTERVAL = 5
class BackupInfoSender(MessageSource):
"""Send user backup statistics to CH periodically"""
SCOPE = Scope.IM360
async def create_source(self, loop, sink):
self._loop = loop
self._sink = sink
self._send_event = asyncio.Event()
self._last_send_timestamp = self.load_last_send_timestamp()
self._check_task = self._loop.create_task(
self._recurring_check_data_to_send()
)
self._send_stat_task = self._loop.create_task(
self._recurring_send_stat()
)
async def shutdown(self):
for task in [self._check_task, self._send_stat_task]:
task.cancel()
with suppress(asyncio.CancelledError):
await task
self.save_last_send_timestamp()
@staticmethod
def is_valid_timestamp(timestamp: Union[int, float]) -> bool:
return isinstance(timestamp, (int, float)) and timestamp > 0
def save_last_send_timestamp(self, ts: Union[int, float] = None):
timestamp = self._last_send_timestamp if ts is None else ts
if not self.is_valid_timestamp(timestamp):
logger.warning("Invalid timestamp: %s", timestamp)
return
save_state("BackupInfoSender", {"last_send_timestamp": timestamp})
def load_last_send_timestamp(self):
timestamp = load_state("BackupInfoSender").get("last_send_timestamp")
if not self.is_valid_timestamp(timestamp):
logger.warning("Invalid timestamp loaded, resetting to 0")
timestamp = 0
return timestamp
@recurring_check(RECURRING_CHECK_INTERVAL)
async def _recurring_check_data_to_send(self):
if time.time() - self._last_send_timestamp >= SEND_INTERVAL:
self._send_event.set()
@recurring_check(0)
async def _recurring_send_stat(self):
await self._send_event.wait()
try:
await self._send_server_config()
except Exception as e:
logger.exception("Failed to collect backup info: %s", e)
finally:
# Ensure backup info is not sent too frequently, even after an error
self._last_send_timestamp = time.time()
self._send_event.clear()
async def _send_server_config(self):
confg_msg = MessageType.BackupInfo(
backup_provider_type=get_current_backend(),
last_backup_timestamp=await get_last_backup_timestamp(),
)
await self._sink.process_message(confg_msg)
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