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Mini Shell
Mini Shell
"""
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/>.
Copyright © 2019 Cloud Linux Software Inc.
This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
import asyncio
import collections
import contextlib
import os
from logging import getLogger
from defence360agent.contracts.messages import MessageType
from defence360agent.contracts.plugins import (MessageSink, MessageSource,
expect)
from defence360agent.utils import recurring_check
logger = getLogger(__name__)
class Accumulate(MessageSink, MessageSource):
PROCESSING_ORDER = MessageSink.ProcessingOrder.POST_PROCESS_MESSAGE
DEFAULT_AGGREGATE_TIMEOUT = int(
os.environ.get("IMUNIFY360_AGGREGATE_MESSAGES_TIMEOUT", 60)
)
def __init__(self, period=DEFAULT_AGGREGATE_TIMEOUT, **kwargs):
super().__init__(**kwargs)
self._period = period
async def create_source(self, loop, sink):
self._loop = loop
self._sink = sink
self._task = loop.create_task(
recurring_check(self._period)(self._flush)())
self._data = collections.defaultdict(list)
async def create_sink(self, loop):
self._loop = loop
async def shutdown(self):
if self._task is not None:
self._task.cancel()
with contextlib.suppress(asyncio.CancelledError):
await self._task
@expect(MessageType.Accumulatable)
async def collect(self, message):
list_type = message.LIST_CLASS
if message.do_accumulate():
self._data[list_type].append(message)
async def _flush(self):
copy_data = self._data
self._data = collections.defaultdict(list)
for list_type, messages in copy_data.items():
try:
# FIXME: remove this try..except block after we have forbidden
# to create Accumulatable class without LIST_CLASS.
await self._sink.process_message(list_type(items=messages))
except TypeError:
logger.error("%s, %s", list_type, messages)
raise
Zerion Mini Shell 1.0