✏️ Editing: mr_proper.py Read Only

"""
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.

This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
from logging import getLogger

from defence360agent.contracts.plugins import (
    expect,
    MessageSource,
    MessageSink,
)
from defence360agent.contracts.messages import MessageType
from defence360agent.utils import recurring_check
from defence360agent.utils.check_lock import check_lock
from imav.malwarelib.scan.cleaners.detached_dir import (
    MalwareDetachedDirCleaner,
)
from imav.malwarelib.scan.cleaners.outdated_scans import (
    OutdatedHistoryCleaner,
    OutdatedHitsCleaner,
    OutdatedScansCleaner,
)
from imav.malwarelib.scan.cleaners.uncompleted_scans import (
    UncompletedScansCleaner,
)

logger = getLogger(__name__)

class MrProper(MessageSource, MessageSink):
    CLEANERS = [
        MalwareDetachedDirCleaner,
        OutdatedHistoryCleaner,
        OutdatedScansCleaner,
        OutdatedHitsCleaner,
    ]

def __init__(self):
        self._loop = None
        self._sink = None
        self._tasks = []

async def create_source(self, loop, sink):
        self._loop = loop
        self._sink = sink
        for cleaner in self.CLEANERS:
            self._tasks.append(
                self._loop.create_task(
                    recurring_check(
                        check_lock,
                        check_period_first=True,
                        check_lock_period=cleaner.PERIOD,
                        lock_file=cleaner.LOCK_FILE,
                    )(cleaner.cleanup)()
                )
            )

async def create_sink(self, loop):
        pass

@expect(MessageType.CheckDetachedScans)
    async def check_detached_scans(self, _):
        await UncompletedScansCleaner.cleanup()
        logger.info("Detached scans checked")

async def shutdown(self):
        for task in self._tasks:
            task.cancel()
        for task in self._tasks:
            # no need to suppress CancelledError because
            # recurring_check() catches it already
            await task

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