#
# Copyright (c) 2019, Neptune Labs Sp. z o.o.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
try:
import psutil
PSUTIL_INSTALLED = True
except ImportError:
PSUTIL_INSTALLED = False
class CustomAbortImpl(object):
def __init__(self, runnable):
self.__runnable = runnable
def abort(self):
self.__runnable()
class DefaultAbortImpl(object):
KILL_TIMEOUT = 5
def __init__(self, pid):
self._pid = pid
@staticmethod
def requirements_installed():
return PSUTIL_INSTALLED
def abort(self):
try:
processes = self._get_process_with_children(psutil.Process(self._pid))
except psutil.NoSuchProcess:
processes = []
for p in processes:
self._abort(p)
_, alive = psutil.wait_procs(processes, timeout=self.KILL_TIMEOUT)
for p in alive:
self._kill(p)
@staticmethod
def _get_process_with_children(process):
try:
return [process] + process.children(recursive=True)
except psutil.NoSuchProcess:
return []
@staticmethod
def _abort(process):
try:
process.terminate()
except psutil.NoSuchProcess:
pass
def _kill(self, process):
for process in self._get_process_with_children(process):
try:
if process.is_running():
process.kill()
except psutil.NoSuchProcess:
pass
