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Cache patterns a bit higher up to make things a little more efficient. See #4469.

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This commit is contained in:
Michael DeHaan 2013-10-11 22:24:37 -04:00
parent d168c709d5
commit 1b2d4c328c
1 changed files with 17 additions and 14 deletions
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31
lib/ansible/inventory/__init__.py
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@ -38,7 +38,7 @@ class Inventory(object):
__slots__ = [ 'host_list', 'groups', '_restriction', '_also_restriction', '_subset',
'parser', '_vars_per_host', '_vars_per_group', '_hosts_cache', '_groups_list',
'_pattern_hosts', '_vars_plugins', '_playbook_basedir']
'_pattern_cache', '_vars_plugins', '_playbook_basedir']
def __init__(self, host_list=C.DEFAULT_HOST_LIST):
@ -53,7 +53,7 @@ class Inventory(object):
self._vars_per_group = {}
self._hosts_cache = {}
self._groups_list = {}
self._pattern_hosts = {}
self._pattern_cache = {}
# to be set by calling set_playbook_basedir by ansible-playbook
self._playbook_basedir = None
@ -195,9 +195,14 @@ class Inventory(object):
take into account negative matches.
"""
if pattern in self._pattern_cache:
return self._pattern_cache[pattern]
(name, enumeration_details) = self._enumeration_info(pattern)
hpat = self._hosts_in_unenumerated_pattern(name)
return self._apply_ranges(pattern, hpat)
result = self._apply_ranges(pattern, hpat)
self._pattern_cache[pattern] = result
return result
def _enumeration_info(self, pattern):
"""
@ -255,20 +260,18 @@ class Inventory(object):
# ignore any negative checks here, this is handled elsewhere
pattern = pattern.replace("!","").replace("&", "")
if pattern not in self._pattern_hosts:
results = []
groups = self.get_groups()
for group in groups:
for host in group.get_hosts():
if pattern == 'all' or self._match(group.name, pattern) or self._match(host.name, pattern):
if host not in results:
results.append(host)
self._pattern_hosts[pattern] = results
return self._pattern_hosts[pattern]
results = []
groups = self.get_groups()
for group in groups:
for host in group.get_hosts():
if pattern == 'all' or self._match(group.name, pattern) or self._match(host.name, pattern):
if host not in results:
results.append(host)
return results
def clear_pattern_cache(self):
''' called exclusively by the add_host plugin to allow patterns to be recalculated '''
self._pattern_hosts = {}
self._pattern_cache = {}
def groups_for_host(self, host):
results = []