# -*- coding: utf-8 -*-
#
# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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
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from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import signal
import os
from airflow.exceptions import AirflowTaskTimeout
from airflow.utils.log.logging_mixin import LoggingMixin
[docs]class timeout(LoggingMixin):
"""
To be used in a ``with`` block and timeout its content.
"""
def __init__(self, seconds=1, error_message='Timeout'):
self.seconds = seconds
self.error_message = error_message + ', PID: ' + str(os.getpid())
def handle_timeout(self, signum, frame):
self.log.error("Process timed out, PID: %s", str(os.getpid()))
raise AirflowTaskTimeout(self.error_message)
def __enter__(self):
try:
signal.signal(signal.SIGALRM, self.handle_timeout)
signal.alarm(self.seconds)
except ValueError as e:
self.log.warning("timeout can't be used in the current context")
self.log.exception(e)
def __exit__(self, type, value, traceback):
try:
signal.alarm(0)
except ValueError as e:
self.log.warning("timeout can't be used in the current context")
self.log.exception(e)