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Move catchup of replication streams to worker. (#7024)
This changes the replication protocol so that the server does not send down `RDATA` for rows that happened before the client connected. Instead, the server will send a `POSITION` and clients then query the database (or master out of band) to get up to date.
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24 changed files with 635 additions and 487 deletions
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@ -19,7 +19,7 @@ from typing import Tuple, Type
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import attr
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from ._base import Stream
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from ._base import Stream, db_query_to_update_function
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"""Handling of the 'events' replication stream
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@ -117,10 +117,11 @@ class EventsStream(Stream):
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def __init__(self, hs):
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self._store = hs.get_datastore()
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self.current_token = self._store.get_current_events_token # type: ignore
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self.update_function = db_query_to_update_function(self._update_function) # type: ignore
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super(EventsStream, self).__init__(hs)
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async def update_function(self, from_token, current_token, limit=None):
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async def _update_function(self, from_token, current_token, limit=None):
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event_rows = await self._store.get_all_new_forward_event_rows(
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from_token, current_token, limit
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)
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