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6069d09b9d
Maintain one Templar for the lifetime of VariableManager, calling
set_available_variables() prior to each use, enabling _get_filter()'s
cache to function correctly.
It does not seem possible for concurrent calls into one (non-copied)
VariableManager instance, and so it need not be reentrant. If that
became a requirement, serializing its or Templar's entry points would be
fine, as it's so CPU-heavy other threads will only fight with it for the
GIL anyway.
Reduces _get_filters() runtime 91%, get_vars() runtime 19%, function
call count 16%, overall runtime 10%.
Tested aginst dummy load comprised of the 12 disabled steps of
debops.auth with an inventory of 80 hosts, which stresses variable
processing and task setup. Before:
7447296 function calls (7253994 primitive calls) in 32.611 seconds
Ordered by: cumulative time
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.000 0.000 32.762 32.762 ansible-playbook:3(<module>)
1 0.007 0.007 31.733 31.733 ansible-playbook:21(<module>)
...
1371/971 0.671 0.000 21.332 0.022 manager.py:154(get_vars)
...
3044 0.315 0.000 5.166 0.002 __init__.py:295(_get_filters)
After:
6252978 function calls (6059638 primitive calls) in 29.055 seconds
Ordered by: cumulative time
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.000 0.000 29.218 29.218 ansible-playbook:3(<module>)
1 0.007 0.007 28.159 28.159 ansible-playbook:21(<module>)
...
1371/971 0.675 0.000 17.211 0.018 manager.py:154(get_vars)
...
3044 0.028 0.000 0.441 0.000 __init__.py:295(_get_filters)
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|PyPI version| |Docs 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/intro_getting_started.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/community.html>`_ 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. Take care to make sure no merge commits are in the submission, and use ``git rebase`` vs ``git merge`` for this reason. If submitting a large code change (other than modules), it's probably a good idea to join ansible-devel and talk about what you would like to do or add first 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 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. * Various release-X.Y branches exist for previous releases. * We'd love to have your contributions, read `Community Information <https://docs.ansible.com/community.html>`_ 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. Ansible 2.1 was the first release which published this and asked for feedback in this manner. Feedback on the roadmap and the new process is quite welcome. The team is aiming for further transparency and better inclusion of both community desires and submissions. These are the team's *best guess* roadmaps based on the Ansible team's experience and are also based on requests and feedback from the community. There are things that may not make it due to time constraints, lack of community maintainers, etc. Each roadmap is published both as an idea of what is upcoming in Ansible, and as a medium for seeking further feedback from the community. There are multiple places for you to submit feedback: - Add to the agenda of an IRC `Core Team Meeting <https://github.com/ansible/community/blob/master/meetings/README.md>`_ (preferred) - Ansible's google-group: ansible-devel - AnsibleFest conferences - IRC Freenode channel: #ansible-devel (this one may have things lost in lots of conversation) For additional details consult the published `Ansible Roadmap <https://docs.ansible.com/ansible/devel/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 .. |Build Status| image:: https://api.shippable.com/projects/573f79d02a8192902e20e34b/badge?branch=devel :target: https://app.shippable.com/projects/573f79d02a8192902e20e34b