You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
Go to file
Toshio Kuratomi aa859597b1 Make the timeout decorator raise an exception out of the function's scope (#49921)
* Revert "allow caller to deal with timeout (#49449)"

This reverts commit 63279823a7.

Flawed on many levels

* Adds poor API to a public function
* Papers over the fact that the public function is doing something bad
  by catching exceptions it cannot handle in the first place
* Papers over the real cause of the issue which is a bug in the timeout
  decorator
* Doesn't reraise properly
* Catches the wrong exception

Fixes #49824
Fixes #49817

* Make the timeout decorator properly raise an exception outside of the function's scope

signal handlers which raise exceptions will never work well because the
exception can be raised anywhere in the called code.  This leads to
exception race conditions where the exceptions could end up being
hanlded by unintended pieces of the called code.

The timeout decorator was using just that idiom.  It was especially bad
because the decorator syntactically occurs outside of the called code
but because of the signal handler, the exception was being raised inside
of the called code.

This change uses a thread instead of a signal to manage the timeout in
parallel to the execution of the decorated function.  Since raising of
the exception happens inside of the decorator, now, instead of inside of
a signal handler, the timeout exception is raised from outside of the
called code as expected which makes reasoning about where exceptions are
to be expected intuitive again.

Fixes #43884

* Add a common case test.

Adding an integration test driven from our unittests.  Most of the time
we'll timeout in run_command which is running things in a subprocess.
Create a test for that specific case in case anything funky comes up
between threading and execve.

* Don't use OSError-based TimeoutError as a base class

Unlike most standard exceptions, OSError has a specific parameter list
with specific meanings.  Instead follow the example of other stdlib
functions, concurrent.futures and multiprocessing and define a separate
TimeoutException.

* Add comment and docstring to point out that this is not hte Python3 TimeoutError

(cherry picked from commit bd072fe83a)
6 years ago
.github (Backport) ec2_instance, ebs_optimized not sub-option of network (#48467) 6 years ago
bin [2.7] Don't fail if a remote_addr with a '/' hits ansible_connection (#49781) (#50037) 6 years ago
changelogs win_reboot - Fix rc validation when using psrp and add extra docs - 2.7 (#53718) 6 years ago
contrib Misc typo fixes (#45969) (#45978) 6 years ago
docs add link to AWS module details (#53126) 6 years ago
examples Add 'auto' to documented default enabled inventory plugins (#46621) (#46637) 6 years ago
hacking Make ansible-test available in the bin directory. (#45876) 6 years ago
lib/ansible Make the timeout decorator raise an exception out of the function's scope (#49921) 6 years ago
licenses Create a short license for PSF and MIT. (#32212) 7 years ago
packaging [stable-2.7] Changelog lint and generation bug fixes. (#53792) 6 years ago
test Make the timeout decorator raise an exception out of the function's scope (#49921) 6 years ago
.cherry_picker.toml 🚸 🐍 🍒 ⛏ Integrate cherry picker (#41403) 6 years ago
.coveragerc AnsiballZ improvements 6 years ago
.gitattributes 2.6 changelog gen/version/root dir cleanup (#40421) 7 years ago
.gitignore added build artifact to .gitignore (#47518) 6 years ago
.mailmap Fix syntax typo 7 years ago
CODING_GUIDELINES.md [stable-2.7] bulk docs update (#47828) 6 years ago
COPYING license file should be in source tree 13 years ago
MANIFEST.in powershell - add bootstrap wrapper to packaging manifest 6 years ago
MODULE_GUIDELINES.md [stable-2.7] bulk docs update (#47828) 6 years ago
Makefile removes docs/api dir from .gitignore and Makefile (#47366) 6 years ago
README.rst [stable-2.7] bulk docs update (#47828) 6 years ago
docsite_requirements.txt Fixes the build issue pertaining to sphinx-build which is required to build ansible (#22480) 8 years ago
requirements.txt Cyptography pr 20566 rebase (#25560) 8 years ago
setup.py powershell - add bootstrap wrapper to packaging manifest 6 years ago
shippable.yml OpenSUSE - Add OpenSUSE 15 test containers (#52793) 6 years ago
tox.ini Fix ansible-test unit test execution. (#45772) 6 years ago

README.rst

|PyPI version| |Docs badge| |Chat badge| |Build Status|

*******
Ansible
*******

Ansible is a radically simple IT automation system. It handles
configuration-management, application deployment, cloud provisioning,
ad-hoc task-execution, and multinode orchestration -- including
trivializing things like zero-downtime rolling updates with load
balancers.

Read the documentation and more at https://ansible.com/

You can find installation instructions
`here <https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html>`_ for a
variety of platforms.

Most users should probably install a released version of Ansible from ``pip``, a package manager or
our `release repository <https://releases.ansible.com/ansible/>`_. `Officially supported
<https://www.ansible.com/ansible-engine>`_ builds of Ansible are also available. Some power users
run directly from the development branch - while significant efforts are made to ensure that
``devel`` is reasonably stable, you're more likely to encounter breaking changes when running
Ansible this way.

Design Principles
=================

*  Have a dead simple setup process and a minimal learning curve.
*  Manage machines very quickly and in parallel.
*  Avoid custom-agents and additional open ports, be agentless by
   leveraging the existing SSH daemon.
*  Describe infrastructure in a language that is both machine and human
   friendly.
*  Focus on security and easy auditability/review/rewriting of content.
*  Manage new remote machines instantly, without bootstrapping any
   software.
*  Allow module development in any dynamic language, not just Python.
*  Be usable as non-root.
*  Be the easiest IT automation system to use, ever.

Get Involved
============

*  Read `Community
   Information <https://docs.ansible.com/ansible/latest/community>`_ for all
   kinds of ways to contribute to and interact with the project,
   including mailing list information and how to submit bug reports and
   code to Ansible.
*  All code submissions are done through pull requests to the ``devel`` branch.
*  Feel free to talk to us before making larger changes
   to avoid duplicate efforts. This not only helps everyone
   know what's going on, it also helps save time and effort if we decide
   some changes are needed.
*  Users list:
   `ansible-project <https://groups.google.com/group/ansible-project>`_
*  Development list:
   `ansible-devel <https://groups.google.com/group/ansible-devel>`_
*  Announcement list:
   `ansible-announce <https://groups.google.com/group/ansible-announce>`_
   -- read only
*  irc.freenode.net: #ansible
*  For the full list of Email Lists, IRC channels see the
   `Communication page <https://docs.ansible.com/ansible/latest/community/communication.html>`_

Branch Info
===========

*  Releases are named after Led Zeppelin songs. (Releases prior to 2.0
   were named after Van Halen songs.)
*  The ``devel`` branch corresponds to the release actively under
   development.
*  The ``stable-2.x`` branches exist for current releases.
*  Various release-X.Y branches exist for previous releases.
*  For information about the active branches see the
   `Ansible release and maintenance <https://docs.ansible.com/ansible/latest/reference_appendices/release_and_maintenance.html>`_ page.
*  We'd love to have your contributions, read the `Community
   Guide <https://docs.ansible.com/ansible/latest/community>`_ for notes on
   how to get started.

Roadmap
=======

Based on team and community feedback, an initial roadmap will be published for a major or minor version (ex: 2.0, 2.1).
Subminor versions will generally not have roadmaps published.

The `Ansible Roadmap page <https://docs.ansible.com/ansible/devel/roadmap/>`_ details what is planned and how to influence the roadmap.

Authors
=======

Ansible was created by `Michael DeHaan <https://github.com/mpdehaan>`_
(michael.dehaan/gmail/com) and has contributions from over 3700 users
(and growing). Thanks everyone!

`Ansible <https://www.ansible.com>`_ is sponsored by `Red Hat, Inc.
<https://www.redhat.com>`_

License
=======

GNU General Public License v3.0

See `COPYING <COPYING>`_ to see the full text.

.. |PyPI version| image:: https://img.shields.io/pypi/v/ansible.svg
   :target: https://pypi.org/project/ansible
.. |Docs badge| image:: https://img.shields.io/badge/docs-latest-brightgreen.svg
   :target: https://docs.ansible.com/ansible/latest/
.. |Build Status| image:: https://api.shippable.com/projects/573f79d02a8192902e20e34b/badge?branch=devel
   :target: https://app.shippable.com/projects/573f79d02a8192902e20e34b
.. |Chat badge| image:: https://img.shields.io/badge/chat-IRC-brightgreen.svg
   :target: https://docs.ansible.com/ansible/latest/community/communication.html