https://fedorahosted.org/freeipa/ticket/1336
Lazy initialization of ipalib plugins is used under all contexts, not
only when context = cli. Every loaded plugin is pre-finalized - a flag
is set, which means, that the plugin needs to be finalized. Then every
call of plugin's __gettattr__ checks the flag and finalizes the plugin
if necessary. The code was implemented by jcholast. Time reduction of
commands execution is quite markable:
patch [s] | normal [s] | command
-----------------------------------------------------------------------
1.468 | 2.287 | ipa user-add jsmith --firt=john
--last=smith
1.658 | 2.235 | ipa user-del jsmith
1.624 | 2.204 | ipa dnsrecord-find example.com
--
Regards,
Ondrej Hamada
FreeIPA team
jabber: oh...@jabbim.cz
IRC: ohamada
diff --git a/ipalib/plugable.py b/ipalib/plugable.py
index b0e4156..2aed1cd 100644
--- a/ipalib/plugable.py
+++ b/ipalib/plugable.py
@@ -173,6 +173,7 @@ class Plugin(ReadOnly):
"""
label = None
+ __try_finalize = False
def __init__(self):
self.__api = None
@@ -208,6 +209,16 @@ class Plugin(ReadOnly):
)
)
+ def __getattribute__(self, name):
+ if name.startswith('_Plugin__') or name.startswith('_ReadOnly__'):
+ return object.__getattribute__(self, name)
+ if self.__try_finalize:
+ self.__try_finalize = False
+ self.finalize()
+ if not is_production_mode(self.__api):
+ assert islocked(self) is True
+ return object.__getattribute__(self, name)
+
def __get_api(self):
"""
Return `API` instance passed to `finalize()`.
@@ -217,6 +228,9 @@ class Plugin(ReadOnly):
return self.__api
api = property(__get_api)
+ def prefinalize(self):
+ self.__try_finalize = True
+
def finalize(self):
"""
"""
@@ -638,9 +652,7 @@ class API(DictProxy):
assert p.instance.api is self
for p in plugins.itervalues():
- p.instance.finalize()
- if not production_mode:
- assert islocked(p.instance) is True
+ p.instance.prefinalize()
object.__setattr__(self, '_API__finalized', True)
tuple(PluginInfo(p) for p in plugins.itervalues())
object.__setattr__(self, 'plugins',
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