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90 lines
2.5 KiB
90 lines
2.5 KiB
6 years ago
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import inspect
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import logging
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import os
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log = logging.getLogger(__name__)
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UNC_PREFIX = '\\\\?\\'
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class ObjectManager(object):
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base_dir = None
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objects_dir = None
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objects_map = {}
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ignore_files = [
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'__init__.py'
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]
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ignore_paths = [
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'plex\\objects\\core\\base.py',
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'plex\\objects\\core\\manager.py'
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]
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@classmethod
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def discover(cls):
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cls.objects_dir = os.path.join(cls.base_dir, 'plex', 'objects')
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# Walk plex/objects directory
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for current, directories, files in os.walk(cls.objects_dir):
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# Iterate files, yield valid paths
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for filename in files:
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if not filename.endswith('.py'):
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continue
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# Ensure filename is not in ignore list
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if filename in cls.ignore_files:
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continue
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path = os.path.join(current, filename)
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# Ensure path is not in ignore list
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if not all([not path.endswith(p) for p in cls.ignore_paths]):
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continue
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# Remove UNC prefix (if it exists)
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if path.startswith(UNC_PREFIX):
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path = path[len(UNC_PREFIX):]
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path = os.path.relpath(path, cls.base_dir)
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name = os.path.splitext(path)[0].replace(os.path.sep, '.')
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yield path, name
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@classmethod
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def load(cls):
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for path, name in cls.discover():
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try:
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mod = __import__(name, fromlist=['*'])
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except Exception as ex:
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log.warn('Unable to import "%s" - %s', name, ex)
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continue
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# Get classes in module
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classes = [
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(key, getattr(mod, key)) for key in dir(mod)
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if not key.startswith('_')
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]
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# Filter to module-specific classes
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classes = [
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(key, value) for (key, value) in classes
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if inspect.isclass(value) and value.__module__ == name
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]
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yield classes
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@classmethod
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def construct(cls):
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log.debug('Loading descriptors...')
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cls.base_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '../../', '..'))
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# Load modules, find descriptor classes
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for classes in cls.load():
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# Update object map
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for key, value in classes:
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cls.objects_map[key] = value
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log.debug('Loaded %s descriptors (%s)', len(cls.objects_map), ', '.join(sorted(cls.objects_map.keys())))
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