* Always cache and return unique list objects, so that if the list
is changed later it does not impact the cached results
* Take additional parameters and the type of the pattern into account
when building the hash string
The earlier distinction was never used; .ipv6_address was always a copy
of .ipv4_address, and the latter was always used to set the remote_addr
field in the PlayContext.
Also uses the canonical ansible_host/ansible_port names when setting the
address and port from variables.
The earlier-recommended "pat1:pat2:pat3[x:y]" notation doesn't work well
with IPv6 addresses, so we recommend ',' as a separator instead. We know
that commas can't occur within a pattern, so we can just split on it.
We still have to accept the "foo:bar" notation because it's so commonly
used, but we issue a deprecation warning for it.
Fixes#12296Closes#12404Closes#12329
This adds a parse_address(pattern) utility function that returns
(host,port), and uses it wherever where we accept IPv4 and IPv6
addresses and hostnames (or host patterns): the inventory parser
the the add_host action plugin.
It also introduces a more extensive set of unit tests that supersedes
the old add_host unit tests (which didn't actually test add_host, but
only the parsing function).
Required some rewiring in inventory code to make sure we're using
the DataLoader class for some data file operations, which makes mocking
them much easier.
Also identified two corner cases not currently handled by the code, related
to inventory variable sources and which one "wins". Also noticed we weren't
properly merging variables from multiple group/host_var file locations
(inventory directory vs. playbook directory locations) so fixed as well.
This commit deprecates the earlier groupname[x-y] syntax in favour of
the inclusive groupname[x:y] syntax. It also makes the subscripting
code simpler and adds explanatory comments.
One problem addressed by the cleanup is that _enumeration_info used to
be called twice, and its results discarded the first time because of the
convoluted control flow.
The possibilities are complicated enough that I didn't want to make
changes without having a complete description of what it actually
accepts/matches. Note that this text documents current behaviour, not
necessarily the behaviour we want. Some of this is undocumented and may
not be intended.
first off, we add an oddly slow basic test of 10k item inventory
Before:
```
Ran 229 tests in 13.214s
OK
real 0m13.403s
user 0m12.106s
sys 0m1.155s
```
After:
```
Ran 230 tests in 21.328s
OK
real 0m21.516s
user 0m20.099s
sys 0m1.275s
```
since that seems like a bit long for the test to add to runtime, lets profile
`python -m cProfile -s time ./bin/ansible all -i test/units/inventory_test_data/huge_range --list-hosts`
Before:
```
1272607 function calls (1259689 primitive calls) in 8.497 seconds
Ordered by: internal time
ncalls tottime percall cumtime percall filename:lineno(function)
10000 4.393 0.000 4.396 0.000 __init__.py:395(_get_host)
20000 2.695 0.000 2.697 0.000 __init__.py:341(__append_host_to_results)
40369 0.113 0.000 0.113 0.000 {posix.lstat}
50006 0.102 0.000 0.153 0.000 __init__.py:1490(combine_vars)
40008 0.089 0.000 0.202 0.000 __init__.py:1546(_load_vars_from_path)
20195 0.088 0.000 0.088 0.000 {posix.stat}
10011 0.087 0.000 0.087 0.000 {posix.getcwd}
```
The top two lines are promising optimization targets
- populate Inventory's host cache more in _get_host, as we are looping
over all the groups anyways.
- eliminate duplicate check of whether we've already included a host
in the construction around __append_host_to_results we can infer
presence of a host in the results list implies the presence of its
name in the hostnames set, allowing us to only to the less expensive
of the two checks
After:
```
1252610 function calls (1239692 primitive calls) in 1.320 seconds
Ordered by: internal time
ncalls tottime percall cumtime percall filename:lineno(function)
40369 0.105 0.000 0.105 0.000 {posix.lstat}
50006 0.094 0.000 0.141 0.000 __init__.py:1490(combine_vars)
40008 0.081 0.000 0.184 0.000 __init__.py:1546(_load_vars_from_path)
10011 0.080 0.000 0.080 0.000 {posix.getcwd}
20195 0.074 0.000 0.074 0.000 {posix.stat}
10002 0.069 0.000 0.261 0.000 __init__.py:1517(load_vars)
```
This function takes a string like 'foo:bar[1:2]:baz[x:y]-quux' and
returns a list of patterns ['foo', 'bar[1:2]', 'baz[x:y]-quux'], i.e.
splits the string on colons that are not part of a range specification.
get_hosts → used externally, not changed
_get_hosts → _evaluate_patterns (takes a list, evaluates ! and &)
__get_hosts → _match_one_pattern (takes one pattern only, ignores !&)
This function takes a string like 'foo:bar[1:2]:baz[x:y]-quux' and
returns a list of patterns ['foo', 'bar[1:2]', 'baz[x:y]-quux'], i.e.
splits the string on colons that are not part of a range specification.
This was used earlier to implement serial, but that's now done using
restrict_to_hosts() (whose docstring is also suitably adjusted here)
and there are no more callers.
This is a slightly different fix than we originally committed, but fixes
the problem in a less invasive way (and I believe it's generally better
that we don't deal with relative paths internally past this point)
Fixes#11789
This fixes the case in which the delegated to host may not be in the
specified hosts list, in which cases facts/vars for the host were
not available in the injected hostvars.
This also fixes the inventory variable fetching function, so that an
unknown host raises a proper error as opposed to a NoneType exception.
Fixes#8224
James Cammarata
Brian Coca
Yannig Perre
Toshio Kuratomi
Brian Coca
Marius Gedminas
Victor Salgado
Abhijit Menon-Sen
Alex Lee
Victor Salgado
Thomas Quinot
Ilya Epifanov
Harald Laabs
Will West
Marc Abramowitz
alberto
Serge van Ginderachter
Michael DeHaan
Dan Slimmon