bazarr/libs/plex/objects/core/base.py

169 lines
4.3 KiB
Python

from plex.lib.six import add_metaclass
from plex.interfaces.core.base import Interface
import logging
import traceback
import types
log = logging.getLogger(__name__)
class Property(object):
helpers = Interface.helpers
def __init__(self, name=None, type=None, resolver=None):
self.name = name
self.type = type
self.resolver = resolver
def value(self, client, key, node, keys_used):
if self.resolver is not None:
return self.value_func(client, node, keys_used)
return self.value_node(key, node, keys_used)
def value_node(self, key, node, keys_used):
value = self.helpers.get(node, key)
keys_used.append(key.lower())
if value is None:
return None
return self.value_convert(value)
def value_convert(self, value):
if not self.type:
return value
types = self.type if type(self.type) is list else [self.type]
result = value
for target_type in types:
try:
result = target_type(result)
except:
return None
return result
def value_func(self, client, node, keys_used):
func = self.resolver()
try:
keys, value = func(client, node)
keys_used.extend([k.lower() for k in keys])
return value
except Exception as ex:
log.warn('Exception in value function (%s): %s - %s', func, ex, traceback.format_exc())
return None
class DescriptorMeta(type):
def __init__(self, name, bases, attrs):
super(DescriptorMeta, self).__init__(name, bases, attrs)
Interface.object_map[self.__name__] = self
@add_metaclass(DescriptorMeta)
class Descriptor(Interface):
attribute_map = None
def __init__(self, client, path):
super(Descriptor, self).__init__(client)
self.path = path
self._children = None
@classmethod
def properties(cls):
keys = [k for k in dir(cls) if not k.startswith('_')]
#log.debug('%s - keys: %s', self, keys)
for key in keys:
if key.startswith('_'):
continue
value = getattr(cls, key)
if value is Property:
yield key, Property(key)
elif isinstance(value, Property):
yield key, value
@classmethod
def construct(cls, client, node, attribute_map=None, path=None, child=False):
if node is None:
return [], None
keys_available = [k.lower() for k in node.keys()]
keys_used = []
if attribute_map is None:
attribute_map = cls.attribute_map or {}
require_map = attribute_map.get('*') != '*'
# Determine path from object "key"
key = cls.helpers.get(node, 'key')
if key is not None:
path = key[:key.rfind('/')]
# Construct object
obj = cls(client, path)
#log.debug('%s - Properties: %s', cls.__name__, list(obj.properties()))
for key, prop in cls.properties():
node_key = prop.name or key
if attribute_map:
if node_key in attribute_map:
node_key = attribute_map.get(node_key)
elif require_map:
setattr(obj, key, None)
continue
#log.debug('%s - Found property "%s"', cls.__name__, key)
setattr(obj, key, prop.value(client, node_key, node, keys_used))
# Post-fill transformation
obj.__transform__()
# Look for omitted keys
omitted = list(set(keys_available) - set(keys_used))
omitted.sort()
if omitted and not child:
log.warn('%s - Omitted attributes: %s', cls.__name__, ', '.join(omitted))
return keys_used, obj
def __transform__(self):
pass
def __iter__(self):
return self._children or []
def __getstate__(self):
data = self.__dict__
def build():
for key, value in data.items():
if isinstance(value, types.GeneratorType):
value = list(value)
if key in ['client']:
continue
yield key, value
return dict(build())
class DescriptorMixin(Descriptor):
pass