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https://github.com/LonamiWebs/Telethon.git
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22fcdeef7f
Plenty of unnecessary exceptions were being raised and caught when
the input parameters were already correct. Furthermore, since
8abc7ade22, the in-disk cache was no
longer being used (so using usernames always reached out to memory).
49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
import itertools
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from . import utils
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from .tl import types
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class EntityCache:
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"""
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In-memory input entity cache, defaultdict-like behaviour.
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"""
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def add(self, entities):
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"""
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Adds the given entities to the cache, if they weren't saved before.
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"""
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if not utils.is_list_like(entities):
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# Invariant: all "chats" and "users" are always iterables,
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# and "user" never is (so we wrap it inside a list).
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entities = itertools.chain(
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getattr(entities, 'chats', []),
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getattr(entities, 'users', []),
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(hasattr(entities, 'user') and [entities.user]) or []
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)
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for entity in entities:
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try:
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pid = utils.get_peer_id(entity)
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if pid not in self.__dict__:
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# Note: `get_input_peer` already checks for `access_hash`
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self.__dict__[pid] = utils.get_input_peer(entity)
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except TypeError:
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pass
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def __getitem__(self, item):
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"""
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Gets the corresponding :tl:`InputPeer` for the given ID or peer,
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or raises ``KeyError`` on any error (i.e. cannot be found).
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"""
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if not isinstance(item, int) or item < 0:
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try:
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return self.__dict__[utils.get_peer_id(item)]
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except TypeError:
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raise KeyError('Invalid key will not have entity') from None
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for cls in (types.PeerUser, types.PeerChat, types.PeerChannel):
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result = self.__dict__.get(utils.get_peer_id(cls(item)))
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if result:
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return result
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raise KeyError('No cached entity for the given key')
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