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wic: plugin: cache results in get_plugins 

Store results of PluginMgr.get_plugins to avoid
loading plugins more than once.

This should speed up finding plugins.

(From OE-Core rev: 95ba37b394d01a6ed81f32ffa03813a070d682dc)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ed Bartosh 2017-02-15 20:42:30 +02:00 committed by Richard Purdie
parent b9839fd664
commit 93b3eb37ff
1 changed files with 12 additions and 10 deletions
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22
scripts/lib/wic/plugin.py
View File

@ -31,7 +31,7 @@ logger = logging.getLogger('wic')
class PluginMgr:
_plugin_dirs = []
_loaded = []
_plugins = {}
@classmethod
def get_plugins(cls, ptype):
@ -39,6 +39,9 @@ class PluginMgr:
if ptype not in PLUGIN_TYPES:
raise WicError('%s is not valid plugin type' % ptype)
if ptype in cls._plugins:
return cls._plugins[ptype]
# collect plugin directories
if not cls._plugin_dirs:
cls._plugin_dirs = [os.path.join(os.path.dirname(__file__), 'plugins')]
@ -52,13 +55,12 @@ class PluginMgr:
# load plugins
for pdir in cls._plugin_dirs:
ppath = os.path.join(pdir, ptype)
if ppath not in cls._loaded:
if os.path.isdir(ppath):
for fname in os.listdir(ppath):
if fname.endswith('.py'):
mname = fname[:-3]
mpath = os.path.join(ppath, fname)
SourceFileLoader(mname, mpath).load_module()
cls._loaded.append(ppath)
if os.path.isdir(ppath):
for fname in os.listdir(ppath):
if fname.endswith('.py'):
mname = fname[:-3]
mpath = os.path.join(ppath, fname)
SourceFileLoader(mname, mpath).load_module()
return pluginbase.get_plugins(ptype)
cls._plugins[ptype] = pluginbase.get_plugins(ptype)
return cls._plugins[ptype]