| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # 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 |
| # "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. |
| """Platform and system specific function.""" |
| from __future__ import annotations |
| |
| import getpass |
| import logging |
| import os |
| import pkgutil |
| import platform |
| import sys |
| |
| from airflow.compat.functools import cache |
| |
| IS_WINDOWS = platform.system() == "Windows" |
| |
| log = logging.getLogger(__name__) |
| |
| |
| def is_tty(): |
| """ |
| Checks if the standard output is connected (is associated with a terminal device) to a tty(-like) |
| device. |
| """ |
| if not hasattr(sys.stdout, "isatty"): |
| return False |
| return sys.stdout.isatty() |
| |
| |
| def is_terminal_support_colors() -> bool: |
| """Try to determine if the current terminal supports colors.""" |
| if sys.platform == "win32": |
| return False |
| if not is_tty(): |
| return False |
| if "COLORTERM" in os.environ: |
| return True |
| term = os.environ.get("TERM", "dumb").lower() |
| if term in ("xterm", "linux") or "color" in term: |
| return True |
| return False |
| |
| |
| def get_airflow_git_version(): |
| """Returns the git commit hash representing the current version of the application.""" |
| git_version = None |
| try: |
| git_version = str(pkgutil.get_data("airflow", "git_version"), encoding="UTF-8") |
| except Exception as e: |
| log.debug(e) |
| |
| return git_version |
| |
| |
| @cache |
| def getuser() -> str: |
| """ |
| Gets the username associated with the current user, or error with a nice |
| error message if there's no current user. |
| |
| We don't want to fall back to os.getuid() because not having a username |
| probably means the rest of the user environment is wrong (e.g. no $HOME). |
| Explicit failure is better than silently trying to work badly. |
| """ |
| try: |
| return getpass.getuser() |
| except KeyError: |
| # Inner import to avoid circular import |
| from airflow.exceptions import AirflowConfigException |
| |
| raise AirflowConfigException( |
| "The user that Airflow is running as has no username; you must run" |
| "Airflow as a full user, with a username and home directory, " |
| "in order for it to function properly." |
| ) |