Split out parsing of vars files to per host and per group
parsing, instead of reparsing all groups for each host. This enhances
performance.
Extend vars_plugins' API with two new methods:
* get host variables: only parses host_vars
* get group variables: only parses group_vars for specific group
The initial run method is still used for backward compatibility.
Parse all vars_plugins at inventory initialisation, instead of
per host when touched first by runner. Here we can also loop through
all groups once easily, then parse them.
This also centralizes all parsing in the inventory constructor.
modified: bin/ansible
modified: bin/ansible-playbook
modified: lib/ansible/inventory/__init__.py
modified: lib/ansible/inventory/vars_plugins/group_vars.py
And also print to stdout not err
This lines up with how ansible-playbook will exit. 0 in the case of no
matched hosts. This makes it easier to script ansible commands w/
variable iventory input which may or may not have an entry for the
specific ansible task being scripted. No matched hosts is acceptable,
but matched hosts w/ failures is not.
Provide hints to playbook callers that a playbook execution had
unreachable vs failures. 2 == failures, 3 == no failures, but
unreachable hosts. 0 continues to be all good.
With the command line option "-c local", ansible and ansible-playbook
should never ask for a SSH password even if this is set in the config.
Fixes#3720
* Moved the --list-hosts option that is common to both `ansible` and
`ansible-playbook` into utils/__init__.py (corrects a FIXME)
* Wrote new help text for the --list-hosts option that makes sense
for both of the commands that it applies to
* Changed the usage argument in `ansible-playbook` so that it is
setup in the base_parser method the same way that it is in
the `ansible` executable
* Updated the help text for several options to correct typos,
clarify meaning, improve readability, or fix grammatical errors.
In the case of `ansible-pull`, I changed the help text so that
it adheres to the same standards as the other executables.
This flag will show playbook output from non-failing commands. -v is also added to /usr/bin/ansible, but not yet used.
I also gutted some internals code dealing with 'invocations' which allowed the callback to know what module invoked
it. This is not something 0.5 does or needed, so callbacks have been simplified.
This introduces the Inventory class.
Playbook uses the internals of Runner to limit the number of hosts to poll
asynchronously. To accomodate this, Inventory can be restricted to specific
hosts.
