mirror of
https://github.com/facebook/sapling.git
synced 2024-10-07 07:17:55 +03:00
c91b552ef5
Summary: Currently, users can opt into systemd for edenfs by setting EDEN_EXPERIMENTAL_SYSTEMD=1 every time they use Eden's CLI. Make it easier to opt in: use systemd if service.experimental_systemd is set in ~/.edenrc. Also allow opting out for a single command via EDEN_EXPERIMENTAL_SYSTEMD=0. For users who don't set service.experimental_systemd or use EDEN_EXPERIMENTAL_SYSTEMD, this diff should not change behavior. (The EDEN_EXPERIMENTAL_SYSTEMD environment variable is still respected.) Reviewed By: simpkins Differential Revision: D13371186 fbshipit-source-id: d7b533ea3583f4b6c8a8f63c6a74eace2be7d783
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
#!/usr/bin/env python3
|
|
#
|
|
# Copyright (c) 2016-present, Facebook, Inc.
|
|
# All rights reserved.
|
|
#
|
|
# This source code is licensed under the BSD-style license found in the
|
|
# LICENSE file in the root directory of this source tree. An additional grant
|
|
# of patent rights can be found in the PATENTS file in the same directory.
|
|
|
|
import abc
|
|
import os
|
|
import typing
|
|
|
|
|
|
class EnvironmentVariableMixin(metaclass=abc.ABCMeta):
|
|
def set_environment_variable(self, name: str, value: str) -> None:
|
|
self.__add_cleanup_for_environment_variable(name)
|
|
os.environ[name] = value
|
|
|
|
def set_environment_variables(self, variables: typing.Mapping[str, str]) -> None:
|
|
for name, value in variables.items():
|
|
self.set_environment_variable(name, value)
|
|
|
|
def unset_environment_variable(self, name: str) -> None:
|
|
self.__add_cleanup_for_environment_variable(name)
|
|
self.__unset_environment_variable_with_cleanup(name)
|
|
|
|
def __add_cleanup_for_environment_variable(self, name: str) -> None:
|
|
old_value = os.getenv(name)
|
|
|
|
def restore() -> None:
|
|
if old_value is None:
|
|
self.__unset_environment_variable_with_cleanup(name)
|
|
else:
|
|
os.environ[name] = old_value
|
|
|
|
self.addCleanup(restore)
|
|
|
|
def __unset_environment_variable_with_cleanup(self, name: str) -> None:
|
|
try:
|
|
del os.environ[name]
|
|
except KeyError:
|
|
pass
|
|
|
|
def addCleanup(
|
|
self,
|
|
function: typing.Callable[..., typing.Any],
|
|
*args: typing.Any,
|
|
**kwargs: typing.Any
|
|
) -> None:
|
|
raise NotImplementedError()
|