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authorEd Bartosh <ed.bartosh@linux.intel.com>2017-02-15 18:47:03 +0200
committerRichard Purdie <richard.purdie@linuxfoundation.org>2017-03-04 10:42:30 +0000
commit9b8c69cdc8500ce065dbe607ba07ee95c1016659 (patch)
treeea3b298f107d72021127133d9e23b78b6af26904 /scripts/lib
parent875d4eede61b548d64f426c2ef077cc17e50cd45 (diff)
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wic: reimplement PluginMgr.get_plugins
Removed all private methods and complicated logic. Put all code to get plugins into get_plugins method. Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Diffstat (limited to 'scripts/lib')
-rw-r--r--scripts/lib/wic/plugin.py99
1 files changed, 27 insertions, 72 deletions
diff --git a/scripts/lib/wic/plugin.py b/scripts/lib/wic/plugin.py
index c200822af7..b45478cd9a 100644
--- a/scripts/lib/wic/plugin.py
+++ b/scripts/lib/wic/plugin.py
@@ -16,95 +16,50 @@
# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
import os
-import sys
import logging
+from importlib.machinery import SourceFileLoader
+
from wic import pluginbase, WicError
from wic.utils.misc import get_bitbake_var
PLUGIN_TYPES = ["imager", "source"]
-PLUGIN_DIR = "/lib/wic/plugins" # relative to scripts
-SCRIPTS_PLUGIN_DIR = "scripts" + PLUGIN_DIR
+SCRIPTS_PLUGIN_DIR = "scripts/lib/wic/plugins"
logger = logging.getLogger('wic')
class PluginMgr:
- plugin_dirs = {}
- wic_path = os.path.dirname(__file__)
- eos = wic_path.rfind('scripts') + len('scripts')
- scripts_path = wic_path[:eos]
- plugin_dir = scripts_path + PLUGIN_DIR
- layers_path = None
-
- @classmethod
- def _build_plugin_dir_list(cls, plugin_dir, ptype):
- if cls.layers_path is None:
- cls.layers_path = get_bitbake_var("BBLAYERS")
- layer_dirs = []
-
- if cls.layers_path is not None:
- for layer_path in cls.layers_path.split():
- path = os.path.join(layer_path, SCRIPTS_PLUGIN_DIR, ptype)
- layer_dirs.append(path)
-
- path = os.path.join(plugin_dir, ptype)
- layer_dirs.append(path)
-
- return layer_dirs
-
- @classmethod
- def append_dirs(cls, dirs):
- for path in dirs:
- cls._add_plugindir(path)
-
- # load all the plugins AGAIN
- cls._load_all()
-
- @classmethod
- def _add_plugindir(cls, path):
- path = os.path.abspath(os.path.expanduser(path))
-
- if not os.path.isdir(path):
- return
-
- if path not in cls.plugin_dirs:
- cls.plugin_dirs[path] = False
- # the value True/False means "loaded"
-
- @classmethod
- def _load_all(cls):
- for (pdir, loaded) in cls.plugin_dirs.items():
- if loaded:
- continue
-
- sys.path.insert(0, pdir)
- for mod in [x[:-3] for x in os.listdir(pdir) if x.endswith(".py")]:
- if mod and mod != '__init__':
- if mod in sys.modules:
- logger.warning("Module %s already exists, skip", mod)
- else:
- try:
- pymod = __import__(mod)
- cls.plugin_dirs[pdir] = True
- logger.debug("Plugin module %s:%s imported",
- mod, pymod.__file__)
- except ImportError as err:
- logger.warning('Failed to load plugin %s/%s: %s',
- os.path.basename(pdir), mod, err)
-
- del sys.path[0]
+ _plugin_dirs = []
+ _loaded = []
@classmethod
def get_plugins(cls, ptype):
- """ the return value is dict of name:class pairs """
-
+ """Get dictionary of <plugin_name>:<class> pairs."""
if ptype not in PLUGIN_TYPES:
raise WicError('%s is not valid plugin type' % ptype)
- plugins_dir = cls._build_plugin_dir_list(cls.plugin_dir, ptype)
-
- cls.append_dirs(plugins_dir)
+ # collect plugin directories
+ if not cls._plugin_dirs:
+ cls._plugin_dirs = [os.path.join(os.path.dirname(__file__), 'plugins')]
+ layers = get_bitbake_var("BBLAYERS") or ''
+ for layer_path in layers.split():
+ path = os.path.join(layer_path, SCRIPTS_PLUGIN_DIR)
+ path = os.path.abspath(os.path.expanduser(path))
+ if path not in cls._plugin_dirs and os.path.isdir(path):
+ cls._plugin_dirs.insert(0, path)
+
+ # 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)
return pluginbase.get_plugins(ptype)