61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
# -*- coding: utf-8 -*- #
|
|
# Copyright 2017 Google LLC. All Rights Reserved.
|
|
#
|
|
# 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.
|
|
|
|
"""Utilities for using containers in conjunction with ssh."""
|
|
|
|
|
|
from __future__ import absolute_import
|
|
from __future__ import division
|
|
from __future__ import unicode_literals
|
|
|
|
|
|
def GetRemoteCommand(container, command):
|
|
"""Assemble the remote command list given user-supplied args.
|
|
|
|
If a container argument is supplied, run
|
|
`sudo docker exec -i[t] CONTAINER_ID COMMAND [ARGS...]` on the remote.
|
|
|
|
Args:
|
|
container: str or None, name of container to enter during connection.
|
|
command: [str] or None, the remote command to execute. If no command is
|
|
given, allocate a TTY.
|
|
|
|
Returns:
|
|
[str] or None, Remote command to run or None if no command.
|
|
"""
|
|
if container:
|
|
# The `/bin/sh` is for listening to commands.
|
|
args = command or ['/bin/sh']
|
|
flags = '-i' if command else '-it'
|
|
return ['sudo', 'docker', 'exec', flags, container] + args
|
|
if command:
|
|
return command
|
|
return None
|
|
|
|
|
|
def GetTty(container, command):
|
|
"""Determine the ssh command should be run in a TTY or not.
|
|
|
|
Args:
|
|
container: str or None, name of container to enter during connection.
|
|
command: [str] or None, the remote command to execute. If no command is
|
|
given, allocate a TTY.
|
|
|
|
Returns:
|
|
Bool or None, whether to enforce TTY or not, or None if "auto".
|
|
"""
|
|
return True if container and not command else None
|
|
|