Source code for toil.utils.toilUpdateEC2Instances
# Copyright (C) 2015-2021 Regents of the University of California
#
# 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.
"""Updates Toil's internal list of EC2 instance types."""
import logging
import socket
from toil.lib.ec2nodes import updateStaticEC2Instances
logger = logging.getLogger(__name__)
[docs]
def internet_connection() -> bool:
"""Returns True if there is an internet connection present, and False otherwise."""
try:
socket.create_connection(("www.stackoverflow.com", 80))
return True
except OSError:
return False
[docs]
def main() -> None:
if not internet_connection():
raise RuntimeError('No internet. Updating the EC2 Instance list requires internet.')
updateStaticEC2Instances()
if __name__ == "__main__":
main()