mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-09-21 03:08:49 +03:00
Make iter_messages use a common message iterator
This commit is contained in:
Lonami Exo
parent
19f38d6733
commit
e2f44ddbea
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@ -1,6 +1,4 @@
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import asyncio
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import itertools
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import time
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from .messageparse import MessageParseMethods
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from .uploads import UploadMethods
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@ -10,9 +8,24 @@ from ..tl import types, functions
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from ..requestiter import RequestIter
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class _GetHistoryIter(RequestIter):
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async def _init(self, entity, offset_id, min_id, max_id, from_user, batch_size, offset_date, add_offset):
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self.entity = await self.client.get_input_entity(entity)
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# TODO Maybe RequestIter could rather have the update offset here?
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# Maybe init should return the request to be used and it be
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# called automatically? And another method to just process it.
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class _MessagesIter(RequestIter):
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"""
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Common factor for all requests that need to iterate over messages.
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"""
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async def _init(
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self, entity, offset_id, min_id, max_id, from_user,
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batch_size, offset_date, add_offset, filter, search
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):
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# Note that entity being ``None`` will perform a global search.
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if entity:
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self.entity = await self.client.get_input_entity(entity)
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else:
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self.entity = None
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if self.reverse:
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raise ValueError('Cannot reverse global search')
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# Telegram doesn't like min_id/max_id. If these IDs are low enough
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# (starting from last_id - 100), the request will return nothing.
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@ -45,175 +58,59 @@ class _GetHistoryIter(RequestIter):
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types.InputPeerUser, types.InputPeerSelf)):
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from_user = None # Ignore from_user unless it's a user
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self.from_id = (await self.client.get_peer_id(from_user)) if from_user else None
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self.request = functions.messages.GetHistoryRequest(
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peer=entity,
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limit=1,
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offset_date=offset_date,
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offset_id=offset_id,
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min_id=0,
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max_id=0,
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add_offset=add_offset,
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hash=0
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)
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if self.limit == 0:
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# No messages, but we still need to know the total message count
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result = await self.client(self.request)
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if isinstance(result, types.messages.MessagesNotModified):
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self.total = result.count
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else:
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self.total = getattr(result, 'count', len(result.messages))
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raise StopAsyncIteration
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# When going in reverse we need an offset of `-limit`, but we
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# also want to respect what the user passed, so add them together.
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if self.reverse:
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self.request.add_offset -= batch_size
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if self.wait_time is None:
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self.wait_time = 1 if self.limit > 3000 else 0
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# Telegram has a hard limit of 100.
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# We don't need to fetch 100 if the limit is less.
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self.batch_size = min(max(batch_size, 1), min(100, self.limit))
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self.add_offset = add_offset
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self.max_id = max_id
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self.min_id = min_id
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self.last_id = 0 if self.reverse else float('inf')
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async def _load_next_chunk(self):
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result = []
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self.request.limit = min(self.left, self.batch_size)
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if self.reverse and self.request.limit != self.batch_size:
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# Remember that we need -limit when going in reverse
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self.request.add_offset = self.add_offset - self.request.limit
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r = await self.client(self.request)
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self.total = getattr(r, 'count', len(r.messages))
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entities = {utils.get_peer_id(x): x
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for x in itertools.chain(r.users, r.chats)}
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messages = reversed(r.messages) if self.reverse else r.messages
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for message in messages:
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if (isinstance(message, types.MessageEmpty)
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or self.from_id and message.from_id != self.from_id):
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continue
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# TODO We used to yield and return here (stopping the iterator)
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# How should we go around that here?
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if self.reverse:
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if message.id <= self.last_id or message.id >= self.max_id:
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break
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else:
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if message.id >= self.last_id or message.id <= self.min_id:
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break
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# There has been reports that on bad connections this method
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# was returning duplicated IDs sometimes. Using ``last_id``
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# is an attempt to avoid these duplicates, since the message
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# IDs are returned in descending order (or asc if reverse).
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self.last_id = message.id
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message._finish_init(self.client, entities, self.entity)
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result.append(message)
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if len(r.messages) < self.request.limit:
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return result
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# Find the first message that's not empty (in some rare cases
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# it can happen that the last message is :tl:`MessageEmpty`)
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last_message = None
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messages = r.messages if self.reverse else reversed(r.messages)
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for m in messages:
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if not isinstance(m, types.MessageEmpty):
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last_message = m
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break
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# TODO If it's None, we used to break (ending the iterator)
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# Similar case as the return above.
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if last_message is not None:
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# There are some cases where all the messages we get start
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# being empty. This can happen on migrated mega-groups if
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# the history was cleared, and we're using search. Telegram
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# acts incredibly weird sometimes. Messages are returned but
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# only "empty", not their contents. If this is the case we
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# should just give up since there won't be any new Message.
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self.request.offset_id = last_message.id
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self.request.offset_date = last_message.date
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if self.reverse:
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# We want to skip the one we already have
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self.request.offset_id += 1
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return result
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class _SearchMessagesIter(RequestIter):
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async def _init(self, entity, offset_id, min_id, max_id, from_user, batch_size, offset_date, add_offset, filter, search):
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self.entity = await self.client.get_input_entity(entity)
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# Telegram doesn't like min_id/max_id. If these IDs are low enough
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# (starting from last_id - 100), the request will return nothing.
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#
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# We can emulate their behaviour locally by setting offset = max_id
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# and simply stopping once we hit a message with ID <= min_id.
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if self.reverse:
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offset_id = max(offset_id, min_id)
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if offset_id and max_id:
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if max_id - offset_id <= 1:
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raise StopAsyncIteration
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if not max_id:
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max_id = float('inf')
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else:
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offset_id = max(offset_id, max_id)
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if offset_id and min_id:
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if offset_id - min_id <= 1:
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raise StopAsyncIteration
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if self.reverse:
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if offset_id:
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offset_id += 1
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else:
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offset_id = 1
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if from_user:
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from_user = await self.client.get_input_entity(from_user)
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if not isinstance(from_user, (
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types.InputPeerUser, types.InputPeerSelf)):
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from_user = None # Ignore from_user unless it's a user
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self.from_id = (await self.client.get_peer_id(from_user)) if from_user else None
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if filter is None:
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filter = types.InputMessagesFilterEmpty()
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# Telegram completely ignores `from_id` in private chats
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if isinstance(entity, (types.InputPeerUser, types.InputPeerSelf)):
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# Don't bother sending `from_user` (it's ignored anyway),
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# but keep `from_id` defined above to check it locally.
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from_user = None
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self.from_id = await self.client.get_peer_id(from_user)
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else:
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# Do send `from_user` to do the filtering server-side,
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# and set `from_id` to None to avoid checking it locally.
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self.from_id = None
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self.request = functions.messages.SearchRequest(
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peer=entity,
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q=search or '',
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filter=filter() if isinstance(filter, type) else filter,
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min_date=None,
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max_date=offset_date,
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offset_id=offset_id,
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add_offset=add_offset,
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limit=0, # Search actually returns 0 items if we ask it to
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max_id=0,
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min_id=0,
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hash=0,
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from_id=from_user
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)
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if not self.entity:
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self.request = functions.messages.SearchGlobalRequest(
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q=search or '',
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offset_date=offset_date,
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offset_peer=types.InputPeerEmpty(),
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offset_id=offset_id,
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limit=1
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)
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elif search is not None or filter or from_user:
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if filter is None:
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filter = types.InputMessagesFilterEmpty()
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# Telegram completely ignores `from_id` in private chats
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if isinstance(
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self.entity, (types.InputPeerUser, types.InputPeerSelf)):
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# Don't bother sending `from_user` (it's ignored anyway),
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# but keep `from_id` defined above to check it locally.
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from_user = None
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else:
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# Do send `from_user` to do the filtering server-side,
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# and set `from_id` to None to avoid checking it locally.
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self.from_id = None
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self.request = functions.messages.SearchRequest(
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peer=self.entity,
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q=search or '',
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filter=filter() if isinstance(filter, type) else filter,
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min_date=None,
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max_date=offset_date,
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offset_id=offset_id,
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add_offset=add_offset,
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limit=0, # Search actually returns 0 items if we ask it to
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max_id=0,
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min_id=0,
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hash=0,
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from_id=from_user
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)
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else:
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self.request = functions.messages.GetHistoryRequest(
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peer=self.entity,
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limit=1,
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offset_date=offset_date,
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offset_id=offset_id,
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min_id=0,
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max_id=0,
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add_offset=add_offset,
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hash=0
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)
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if self.limit == 0:
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# No messages, but we still need to know the total message count
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@ -227,19 +124,20 @@ class _SearchMessagesIter(RequestIter):
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# When going in reverse we need an offset of `-limit`, but we
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# also want to respect what the user passed, so add them together.
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if self.reverse:
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self.request.add_offset -= batch_size
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self.request.add_offset -= self.batch_size
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if self.wait_time is None:
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self.wait_time = 1 if self.limit > 3000 else 0
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# Telegram has a hard limit of 100.
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# We don't need to fetch 100 if the limit is less.
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self.batch_size = min(max(batch_size, 1), min(100, self.limit))
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self.add_offset = add_offset
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self.max_id = max_id
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self.min_id = min_id
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self.last_id = 0 if self.reverse else float('inf')
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# Telegram has a hard limit of 100.
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# We don't need to fetch 100 if the limit is less.
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self.batch_size = min(max(batch_size, 1), min(100, self.limit))
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async def _load_next_chunk(self):
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result = []
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@ -260,14 +158,9 @@ class _SearchMessagesIter(RequestIter):
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or self.from_id and message.from_id != self.from_id):
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continue
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# TODO We used to yield and return here (stopping the iterator)
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# How should we go around that here?
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if self.reverse:
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if message.id <= self.last_id or message.id >= self.max_id:
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break
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else:
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if message.id >= self.last_id or message.id <= self.min_id:
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break
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if not self._message_in_range(message):
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self.left = len(result)
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break
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# There has been reports that on bad connections this method
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# was returning duplicated IDs sometimes. Using ``last_id``
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@ -278,34 +171,74 @@ class _SearchMessagesIter(RequestIter):
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result.append(message)
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if len(r.messages) < self.request.limit:
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return result
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self.left = len(result)
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# Find the first message that's not empty (in some rare cases
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# Get the first message that's not empty (in some rare cases
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# it can happen that the last message is :tl:`MessageEmpty`)
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last_message = None
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messages = r.messages if self.reverse else reversed(r.messages)
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for m in messages:
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if not isinstance(m, types.MessageEmpty):
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last_message = m
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break
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# TODO If it's None, we used to break (ending the iterator)
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# Similar case as the return above.
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if last_message is not None:
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if result:
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self._update_offset(result[0])
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else:
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# There are some cases where all the messages we get start
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# being empty. This can happen on migrated mega-groups if
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# the history was cleared, and we're using search. Telegram
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# acts incredibly weird sometimes. Messages are returned but
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# only "empty", not their contents. If this is the case we
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# should just give up since there won't be any new Message.
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self.request.offset_id = last_message.id
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self.request.max_date = last_message.date # not offset_date
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if self.reverse:
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# We want to skip the one we already have
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self.request.offset_id += 1
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self.left = len(result)
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return result
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def _message_in_range(self, message):
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"""
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Determine whether the given message is in the range or
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it should be ignored (and avoid loading more chunks).
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"""
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# No entity means message IDs between chats may vary
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if self.entity:
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if self.reverse:
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if message.id <= self.last_id or message.id >= self.max_id:
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return False
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else:
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if message.id >= self.last_id or message.id <= self.min_id:
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return False
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return True
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def _update_offset(self, last_message):
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"""
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After making the request, update its offset with the last message.
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"""
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self.request.offset_id = last_message.id
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if self.reverse:
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# We want to skip the one we already have
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self.request.offset_id += 1
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if isinstance(self.request, functions.messages.SearchRequest):
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self.request.max_date = last_message.date
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else:
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# getHistory and searchGlobal call it offset_date
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self.request.offset_date = last_message.date
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if isinstance(self.request, functions.messages.SearchGlobalRequest):
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self.request.offset_peer = last_message.input_chat
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class _IDsIter(RequestIter):
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async def _init(self, entity, from_user, ids):
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if not utils.is_list_like(ids):
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self.ids = [ids]
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elif not ids:
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raise StopAsyncIteration
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elif self.reverse:
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self.ids = list(reversed(ids))
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else:
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self.ids = ids
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raise NotImplementedError
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async def _load_next_chunk(self):
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raise NotImplementedError
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class MessageMethods(UploadMethods, ButtonMethods, MessageParseMethods):
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@ -428,242 +361,26 @@ class MessageMethods(UploadMethods, ButtonMethods, MessageParseMethods):
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an higher limit, so you're free to set the ``batch_size`` that
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you think may be good.
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"""
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# TODO Handle global search
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# TODO Handle yield IDs
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# TODO Reuse code between search, global, get history
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if search is not None or filter or from_user:
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return _SearchMessagesIter(
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self,
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limit,
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entity=entity,
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offset_id=offset_id,
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min_id=min_id,
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max_id=max_id,
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from_user=from_user,
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batch_size=batch_size,
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offset_date=offset_date,
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add_offset=add_offset,
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filter=filter,
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search=search
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)
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else:
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return _GetHistoryIter(
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self,
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limit,
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wait_time=wait_time,
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entity=entity,
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reverse=reverse,
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offset_id=offset_id,
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min_id=min_id,
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max_id=max_id,
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from_user=from_user,
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batch_size=batch_size,
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offset_date=offset_date,
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add_offset=add_offset
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)
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# Note that entity being ``None`` is intended to get messages by
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# ID under no specific chat, and also to request a global search.
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if entity:
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entity = await self.get_input_entity(entity)
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if ids is not None:
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return _IDsIter(self, limit, entity=entity, ids=ids)
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if ids:
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if not utils.is_list_like(ids):
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ids = (ids,)
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if reverse:
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ids = list(reversed(ids))
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async for x in self._iter_ids(entity, ids, total=_total):
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await yield_(x)
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return
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# Telegram doesn't like min_id/max_id. If these IDs are low enough
|
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# (starting from last_id - 100), the request will return nothing.
|
||||
#
|
||||
# We can emulate their behaviour locally by setting offset = max_id
|
||||
# and simply stopping once we hit a message with ID <= min_id.
|
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if reverse:
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offset_id = max(offset_id, min_id)
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if offset_id and max_id:
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if max_id - offset_id <= 1:
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return
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if not max_id:
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max_id = float('inf')
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else:
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offset_id = max(offset_id, max_id)
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if offset_id and min_id:
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if offset_id - min_id <= 1:
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return
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if reverse:
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if offset_id:
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offset_id += 1
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else:
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offset_id = 1
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|
||||
if from_user:
|
||||
from_user = await self.get_input_entity(from_user)
|
||||
if not isinstance(from_user, (
|
||||
types.InputPeerUser, types.InputPeerSelf)):
|
||||
from_user = None # Ignore from_user unless it's a user
|
||||
|
||||
from_id = (await self.get_peer_id(from_user)) if from_user else None
|
||||
|
||||
limit = float('inf') if limit is None else int(limit)
|
||||
if not entity:
|
||||
if reverse:
|
||||
raise ValueError('Cannot reverse global search')
|
||||
|
||||
reverse = None
|
||||
request = functions.messages.SearchGlobalRequest(
|
||||
q=search or '',
|
||||
offset_date=offset_date,
|
||||
offset_peer=types.InputPeerEmpty(),
|
||||
offset_id=offset_id,
|
||||
limit=1
|
||||
)
|
||||
elif search is not None or filter or from_user:
|
||||
if filter is None:
|
||||
filter = types.InputMessagesFilterEmpty()
|
||||
|
||||
# Telegram completely ignores `from_id` in private chats
|
||||
if isinstance(entity, (types.InputPeerUser, types.InputPeerSelf)):
|
||||
# Don't bother sending `from_user` (it's ignored anyway),
|
||||
# but keep `from_id` defined above to check it locally.
|
||||
from_user = None
|
||||
else:
|
||||
# Do send `from_user` to do the filtering server-side,
|
||||
# and set `from_id` to None to avoid checking it locally.
|
||||
from_id = None
|
||||
|
||||
request = functions.messages.SearchRequest(
|
||||
peer=entity,
|
||||
q=search or '',
|
||||
filter=filter() if isinstance(filter, type) else filter,
|
||||
min_date=None,
|
||||
max_date=offset_date,
|
||||
offset_id=offset_id,
|
||||
add_offset=add_offset,
|
||||
limit=0, # Search actually returns 0 items if we ask it to
|
||||
max_id=0,
|
||||
min_id=0,
|
||||
hash=0,
|
||||
from_id=from_user
|
||||
)
|
||||
else:
|
||||
request = functions.messages.GetHistoryRequest(
|
||||
peer=entity,
|
||||
limit=1,
|
||||
offset_date=offset_date,
|
||||
offset_id=offset_id,
|
||||
min_id=0,
|
||||
max_id=0,
|
||||
add_offset=add_offset,
|
||||
hash=0
|
||||
)
|
||||
|
||||
if limit == 0:
|
||||
if not _total:
|
||||
return
|
||||
# No messages, but we still need to know the total message count
|
||||
result = await self(request)
|
||||
if isinstance(result, types.messages.MessagesNotModified):
|
||||
_total[0] = result.count
|
||||
else:
|
||||
_total[0] = getattr(result, 'count', len(result.messages))
|
||||
return
|
||||
|
||||
if wait_time is None:
|
||||
wait_time = 1 if limit > 3000 else 0
|
||||
|
||||
have = 0
|
||||
last_id = 0 if reverse else float('inf')
|
||||
|
||||
# Telegram has a hard limit of 100.
|
||||
# We don't need to fetch 100 if the limit is less.
|
||||
batch_size = min(max(batch_size, 1), min(100, limit))
|
||||
|
||||
# When going in reverse we need an offset of `-limit`, but we
|
||||
# also want to respect what the user passed, so add them together.
|
||||
if reverse:
|
||||
request.add_offset -= batch_size
|
||||
|
||||
while have < limit:
|
||||
start = time.time()
|
||||
|
||||
request.limit = min(limit - have, batch_size)
|
||||
if reverse and request.limit != batch_size:
|
||||
# Remember that we need -limit when going in reverse
|
||||
request.add_offset = add_offset - request.limit
|
||||
|
||||
r = await self(request)
|
||||
if _total:
|
||||
_total[0] = getattr(r, 'count', len(r.messages))
|
||||
|
||||
entities = {utils.get_peer_id(x): x
|
||||
for x in itertools.chain(r.users, r.chats)}
|
||||
|
||||
messages = reversed(r.messages) if reverse else r.messages
|
||||
for message in messages:
|
||||
if (isinstance(message, types.MessageEmpty)
|
||||
or from_id and message.from_id != from_id):
|
||||
continue
|
||||
|
||||
if reverse is None:
|
||||
pass
|
||||
elif reverse:
|
||||
if message.id <= last_id or message.id >= max_id:
|
||||
return
|
||||
else:
|
||||
if message.id >= last_id or message.id <= min_id:
|
||||
return
|
||||
|
||||
# There has been reports that on bad connections this method
|
||||
# was returning duplicated IDs sometimes. Using ``last_id``
|
||||
# is an attempt to avoid these duplicates, since the message
|
||||
# IDs are returned in descending order (or asc if reverse).
|
||||
last_id = message.id
|
||||
|
||||
message._finish_init(self, entities, entity)
|
||||
await yield_(message)
|
||||
have += 1
|
||||
|
||||
if len(r.messages) < request.limit:
|
||||
break
|
||||
|
||||
# Find the first message that's not empty (in some rare cases
|
||||
# it can happen that the last message is :tl:`MessageEmpty`)
|
||||
last_message = None
|
||||
messages = r.messages if reverse else reversed(r.messages)
|
||||
for m in messages:
|
||||
if not isinstance(m, types.MessageEmpty):
|
||||
last_message = m
|
||||
break
|
||||
|
||||
if last_message is None:
|
||||
# There are some cases where all the messages we get start
|
||||
# being empty. This can happen on migrated mega-groups if
|
||||
# the history was cleared, and we're using search. Telegram
|
||||
# acts incredibly weird sometimes. Messages are returned but
|
||||
# only "empty", not their contents. If this is the case we
|
||||
# should just give up since there won't be any new Message.
|
||||
break
|
||||
else:
|
||||
request.offset_id = last_message.id
|
||||
if isinstance(request, functions.messages.SearchRequest):
|
||||
request.max_date = last_message.date
|
||||
else:
|
||||
# getHistory and searchGlobal call it offset_date
|
||||
request.offset_date = last_message.date
|
||||
|
||||
if isinstance(request, functions.messages.SearchGlobalRequest):
|
||||
request.offset_peer = last_message.input_chat
|
||||
elif reverse:
|
||||
# We want to skip the one we already have
|
||||
request.offset_id += 1
|
||||
|
||||
await asyncio.sleep(
|
||||
max(wait_time - (time.time() - start), 0), loop=self._loop)
|
||||
return _MessagesIter(
|
||||
client=self,
|
||||
reverse=reverse,
|
||||
wait_time=wait_time,
|
||||
limit=limit,
|
||||
entity=entity,
|
||||
offset_id=offset_id,
|
||||
min_id=min_id,
|
||||
max_id=max_id,
|
||||
from_user=from_user,
|
||||
batch_size=batch_size,
|
||||
offset_date=offset_date,
|
||||
add_offset=add_offset,
|
||||
filter=filter,
|
||||
search=search
|
||||
)
|
||||
|
||||
async def get_messages(self, *args, **kwargs):
|
||||
"""
|
||||
|
|
@ -682,6 +399,7 @@ class MessageMethods(UploadMethods, ButtonMethods, MessageParseMethods):
|
|||
a single `Message <telethon.tl.custom.message.Message>` will be
|
||||
returned for convenience instead of a list.
|
||||
"""
|
||||
# TODO Make RequestIter have a .collect() or similar
|
||||
total = [0]
|
||||
kwargs['_total'] = total
|
||||
if len(args) == 1 and 'limit' not in kwargs:
|
||||
|
|
|
|||
|
|
@ -3,6 +3,10 @@ import asyncio
|
|||
import time
|
||||
|
||||
|
||||
# TODO There are two types of iterators for requests.
|
||||
# One has a limit of items to retrieve, and the
|
||||
# other has a list that must be called in chunks.
|
||||
# Make classes for both here so it's easy to use.
|
||||
class RequestIter(abc.ABC):
|
||||
"""
|
||||
Helper class to deal with requests that need offsets to iterate.
|
||||
|
|
@ -50,6 +54,9 @@ class RequestIter(abc.ABC):
|
|||
if self.buffer is ():
|
||||
await self._init(**self.kwargs)
|
||||
|
||||
if self.left <= 0: # <= 0 because subclasses may change it
|
||||
raise StopAsyncIteration
|
||||
|
||||
if self.index == len(self.buffer):
|
||||
# asyncio will handle times <= 0 to sleep 0 seconds
|
||||
if self.wait_time:
|
||||
|
|
@ -84,7 +91,7 @@ class RequestIter(abc.ABC):
|
|||
'is running (i.e. you are inside an "async def")'
|
||||
)
|
||||
|
||||
raise NotImplementedError('lol!')
|
||||
return self.__aiter__()
|
||||
|
||||
@abc.abstractmethod
|
||||
async def _load_next_chunk(self):
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user