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Handle PersistentTimestampOutdatedError

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Lonami Exo 2022-05-23 11:10:46 +02:00
parent 5e46b6365c
commit dfce1f53a8
1 changed files with 23 additions and 1 deletions
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24
telethon/client/updates.py
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@ -272,7 +272,29 @@ class UpdateMethods:
get_diff = self._message_box.get_channel_difference(self._mb_entity_cache)
if get_diff:
self._log[__name__].info('Getting difference for channel updates')
diff = await self(get_diff)
try:
diff = await self(get_diff)
except errors.PersistentTimestampOutdatedError:
# According to Telegram's docs:
# "Channel internal replication issues, try again later (treat this like an RPC_CALL_FAIL)."
# We can treat this as "empty difference" and not update the local pts.
# Then this same call will be retried when another gap is detected or timeout expires.
#
# Another option would be to literally treat this like an RPC_CALL_FAIL and retry after a few
# seconds, but if Telegram is having issues it's probably best to wait for it to send another
# update (hinting it may be okay now) and retry then.
#
# This is a bit hacky because MessageBox doesn't really have a way to "not update" the pts.
# Instead we manually extract the previously-known pts and use that.
self._log[__name__].warning(
'Getting difference for channel updates caused PersistentTimestampOutdated;'
' ending getting difference prematurely until server issues are resolved'
)
diff = types.updates.ChannelDifferenceEmpty(
pts=self._message_box.map[get_diff.channel.channel_id].pts,
final=True,
timeout=30
)
updates, users, chats = self._message_box.apply_channel_difference(get_diff, diff, self._mb_entity_cache)
updates_to_dispatch.extend(self._preprocess_updates(updates, users, chats))
continue