Avoid resolving a pattern that is a plain host. When matching a hostname in the
hosts_cache, just use the host object from there.
When running a task on say 750 hosts, this yields a huge improvement.
In some cases, where a host is mentioned in multiple groups, and those
groups are referenced in multiple ini files, a group could still contain
multiple instances of a group in its host,groups list, where only one of them
is the right group, that exists in the inventory.
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
If something is executable but doesn't look like it should be, or if
something is NOT executable and DOES looks like it should, show a
more apropos error with a hint on correcting the problem
Fixes#5113
Make sure all hosts and groups are unique objects
and that those are referenced uniquely everywhere.
Also fixes test_dir_inventory unit tests which were broken after previous
patches.
modified: lib/ansible/inventory/dir.py
Fixes a bug where vault_password parameter was not passed through in
_load_vars_from_folder()
modified: lib/ansible/inventory/vars_plugins/group_vars.py
0. Uncomment the test.
1. Test fails.
2. Make vars unique per file in test inventory files.
3. Modify token addition to not ast.literal_eval(v) a variable containing a hash.
4. Modify vars to have an escape in test inventory file.
5. Catch exceptions explicitly. Any unknown exceptions should be a bug.
6. Test passes.
It came up that fixing this unit test may relate to another ticket that is open. This work allows us to uncomment this unit test by fixing how we pars variables allowing a quoted variable to contain a '#'.
Work also went into cleaning up some of the test data to clarify what was working.
Lastly work went into cleaning up formatting so that the code is easily read.
