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-rw-r--r--synapse/storage/data_stores/main/events_worker.py41
-rw-r--r--synapse/storage/data_stores/main/presence.py41
-rw-r--r--synapse/storage/data_stores/main/push_rule.py56
-rw-r--r--synapse/storage/data_stores/main/receipts.py82
4 files changed, 183 insertions, 37 deletions
diff --git a/synapse/storage/data_stores/main/events_worker.py b/synapse/storage/data_stores/main/events_worker.py
index 213d69100a..a48c7a96ca 100644
--- a/synapse/storage/data_stores/main/events_worker.py
+++ b/synapse/storage/data_stores/main/events_worker.py
@@ -1077,9 +1077,32 @@ class EventsWorkerStore(SQLBaseStore):
             "get_ex_outlier_stream_rows", get_ex_outlier_stream_rows_txn
         )
 
-    def get_all_new_backfill_event_rows(self, last_id, current_id, limit):
+    async def get_all_new_backfill_event_rows(
+        self, instance_name: str, last_id: int, current_id: int, limit: int
+    ) -> Tuple[List[Tuple[int, list]], int, bool]:
+        """Get updates for backfill replication stream, including all new
+        backfilled events and events that have gone from being outliers to not.
+
+        Args:
+            instance_name: The writer we want to fetch updates from. Unused
+                here since there is only ever one writer.
+            last_id: The token to fetch updates from. Exclusive.
+            current_id: The token to fetch updates up to. Inclusive.
+            limit: The requested limit for the number of rows to return. The
+                function may return more or fewer rows.
+
+        Returns:
+            A tuple consisting of: the updates, a token to use to fetch
+            subsequent updates, and whether we returned fewer rows than exists
+            between the requested tokens due to the limit.
+
+            The token returned can be used in a subsequent call to this
+            function to get further updatees.
+
+            The updates are a list of 2-tuples of stream ID and the row data
+        """
         if last_id == current_id:
-            return defer.succeed([])
+            return [], current_id, False
 
         def get_all_new_backfill_event_rows(txn):
             sql = (
@@ -1094,10 +1117,12 @@ class EventsWorkerStore(SQLBaseStore):
                 " LIMIT ?"
             )
             txn.execute(sql, (-last_id, -current_id, limit))
-            new_event_updates = txn.fetchall()
+            new_event_updates = [(row[0], row[1:]) for row in txn]
 
+            limited = False
             if len(new_event_updates) == limit:
                 upper_bound = new_event_updates[-1][0]
+                limited = True
             else:
                 upper_bound = current_id
 
@@ -1114,11 +1139,15 @@ class EventsWorkerStore(SQLBaseStore):
                 " ORDER BY event_stream_ordering DESC"
             )
             txn.execute(sql, (-last_id, -upper_bound))
-            new_event_updates.extend(txn.fetchall())
+            new_event_updates.extend((row[0], row[1:]) for row in txn)
 
-            return new_event_updates
+            if len(new_event_updates) >= limit:
+                upper_bound = new_event_updates[-1][0]
+                limited = True
 
-        return self.db.runInteraction(
+            return new_event_updates, upper_bound, limited
+
+        return await self.db.runInteraction(
             "get_all_new_backfill_event_rows", get_all_new_backfill_event_rows
         )
 
diff --git a/synapse/storage/data_stores/main/presence.py b/synapse/storage/data_stores/main/presence.py
index dab31e0c2d..7574612619 100644
--- a/synapse/storage/data_stores/main/presence.py
+++ b/synapse/storage/data_stores/main/presence.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from typing import List, Tuple
+
 from twisted.internet import defer
 
 from synapse.storage._base import SQLBaseStore, make_in_list_sql_clause
@@ -73,9 +75,32 @@ class PresenceStore(SQLBaseStore):
             )
             txn.execute(sql + clause, [stream_id] + list(args))
 
-    def get_all_presence_updates(self, last_id, current_id, limit):
+    async def get_all_presence_updates(
+        self, instance_name: str, last_id: int, current_id: int, limit: int
+    ) -> Tuple[List[Tuple[int, list]], int, bool]:
+        """Get updates for presence replication stream.
+
+        Args:
+            instance_name: The writer we want to fetch updates from. Unused
+                here since there is only ever one writer.
+            last_id: The token to fetch updates from. Exclusive.
+            current_id: The token to fetch updates up to. Inclusive.
+            limit: The requested limit for the number of rows to return. The
+                function may return more or fewer rows.
+
+        Returns:
+            A tuple consisting of: the updates, a token to use to fetch
+            subsequent updates, and whether we returned fewer rows than exists
+            between the requested tokens due to the limit.
+
+            The token returned can be used in a subsequent call to this
+            function to get further updatees.
+
+            The updates are a list of 2-tuples of stream ID and the row data
+        """
+
         if last_id == current_id:
-            return defer.succeed([])
+            return [], current_id, False
 
         def get_all_presence_updates_txn(txn):
             sql = """
@@ -89,9 +114,17 @@ class PresenceStore(SQLBaseStore):
                 LIMIT ?
             """
             txn.execute(sql, (last_id, current_id, limit))
-            return txn.fetchall()
+            updates = [(row[0], row[1:]) for row in txn]
+
+            upper_bound = current_id
+            limited = False
+            if len(updates) >= limit:
+                upper_bound = updates[-1][0]
+                limited = True
+
+            return updates, upper_bound, limited
 
-        return self.db.runInteraction(
+        return await self.db.runInteraction(
             "get_all_presence_updates", get_all_presence_updates_txn
         )
 
diff --git a/synapse/storage/data_stores/main/push_rule.py b/synapse/storage/data_stores/main/push_rule.py
index ef8f40959f..f6e78ca590 100644
--- a/synapse/storage/data_stores/main/push_rule.py
+++ b/synapse/storage/data_stores/main/push_rule.py
@@ -16,7 +16,7 @@
 
 import abc
 import logging
-from typing import Union
+from typing import List, Tuple, Union
 
 from canonicaljson import json
 
@@ -348,23 +348,53 @@ class PushRulesWorkerStore(
             results.setdefault(row["user_name"], {})[row["rule_id"]] = enabled
         return results
 
-    def get_all_push_rule_updates(self, last_id, current_id, limit):
-        """Get all the push rules changes that have happend on the server"""
+    async def get_all_push_rule_updates(
+        self, instance_name: str, last_id: int, current_id: int, limit: int
+    ) -> Tuple[List[Tuple[int, tuple]], int, bool]:
+        """Get updates for push_rules replication stream.
+
+        Args:
+            instance_name: The writer we want to fetch updates from. Unused
+                here since there is only ever one writer.
+            last_id: The token to fetch updates from. Exclusive.
+            current_id: The token to fetch updates up to. Inclusive.
+            limit: The requested limit for the number of rows to return. The
+                function may return more or fewer rows.
+
+        Returns:
+            A tuple consisting of: the updates, a token to use to fetch
+            subsequent updates, and whether we returned fewer rows than exists
+            between the requested tokens due to the limit.
+
+            The token returned can be used in a subsequent call to this
+            function to get further updatees.
+
+            The updates are a list of 2-tuples of stream ID and the row data
+        """
+
         if last_id == current_id:
-            return defer.succeed([])
+            return [], current_id, False
 
         def get_all_push_rule_updates_txn(txn):
-            sql = (
-                "SELECT stream_id, event_stream_ordering, user_id, rule_id,"
-                " op, priority_class, priority, conditions, actions"
-                " FROM push_rules_stream"
-                " WHERE ? < stream_id AND stream_id <= ?"
-                " ORDER BY stream_id ASC LIMIT ?"
-            )
+            sql = """
+                SELECT stream_id, user_id
+                FROM push_rules_stream
+                WHERE ? < stream_id AND stream_id <= ?
+                ORDER BY stream_id ASC
+                LIMIT ?
+            """
             txn.execute(sql, (last_id, current_id, limit))
-            return txn.fetchall()
+            updates = [(stream_id, (user_id,)) for stream_id, user_id in txn]
+
+            limited = False
+            upper_bound = current_id
+            if len(updates) == limit:
+                limited = True
+                upper_bound = updates[-1][0]
+
+            return updates, upper_bound, limited
 
-        return self.db.runInteraction(
+        return await self.db.runInteraction(
             "get_all_push_rule_updates", get_all_push_rule_updates_txn
         )
 
diff --git a/synapse/storage/data_stores/main/receipts.py b/synapse/storage/data_stores/main/receipts.py
index d4a7163049..8f5505bd67 100644
--- a/synapse/storage/data_stores/main/receipts.py
+++ b/synapse/storage/data_stores/main/receipts.py
@@ -16,6 +16,7 @@
 
 import abc
 import logging
+from typing import List, Tuple
 
 from canonicaljson import json
 
@@ -267,26 +268,79 @@ class ReceiptsWorkerStore(SQLBaseStore):
         }
         return results
 
-    def get_all_updated_receipts(self, last_id, current_id, limit=None):
+    def get_users_sent_receipts_between(self, last_id: int, current_id: int):
+        """Get all users who sent receipts between `last_id` exclusive and
+        `current_id` inclusive.
+
+        Returns:
+            Deferred[List[str]]
+        """
+
         if last_id == current_id:
             return defer.succeed([])
 
-        def get_all_updated_receipts_txn(txn):
-            sql = (
-                "SELECT stream_id, room_id, receipt_type, user_id, event_id, data"
-                " FROM receipts_linearized"
-                " WHERE ? < stream_id AND stream_id <= ?"
-                " ORDER BY stream_id ASC"
-            )
-            args = [last_id, current_id]
-            if limit is not None:
-                sql += " LIMIT ?"
-                args.append(limit)
-            txn.execute(sql, args)
+        def _get_users_sent_receipts_between_txn(txn):
+            sql = """
+                SELECT DISTINCT user_id FROM receipts_linearized
+                WHERE ? < stream_id AND stream_id <= ?
+            """
+            txn.execute(sql, (last_id, current_id))
 
-            return [r[0:5] + (json.loads(r[5]),) for r in txn]
+            return [r[0] for r in txn]
 
         return self.db.runInteraction(
+            "get_users_sent_receipts_between", _get_users_sent_receipts_between_txn
+        )
+
+    async def get_all_updated_receipts(
+        self, instance_name: str, last_id: int, current_id: int, limit: int
+    ) -> Tuple[List[Tuple[int, list]], int, bool]:
+        """Get updates for receipts replication stream.
+
+        Args:
+            instance_name: The writer we want to fetch updates from. Unused
+                here since there is only ever one writer.
+            last_id: The token to fetch updates from. Exclusive.
+            current_id: The token to fetch updates up to. Inclusive.
+            limit: The requested limit for the number of rows to return. The
+                function may return more or fewer rows.
+
+        Returns:
+            A tuple consisting of: the updates, a token to use to fetch
+            subsequent updates, and whether we returned fewer rows than exists
+            between the requested tokens due to the limit.
+
+            The token returned can be used in a subsequent call to this
+            function to get further updatees.
+
+            The updates are a list of 2-tuples of stream ID and the row data
+        """
+
+        if last_id == current_id:
+            return [], current_id, False
+
+        def get_all_updated_receipts_txn(txn):
+            sql = """
+                SELECT stream_id, room_id, receipt_type, user_id, event_id, data
+                FROM receipts_linearized
+                WHERE ? < stream_id AND stream_id <= ?
+                ORDER BY stream_id ASC
+                LIMIT ?
+            """
+            txn.execute(sql, (last_id, current_id, limit))
+
+            updates = [(r[0], r[1:5] + (json.loads(r[5]),)) for r in txn]
+
+            limited = False
+            upper_bound = current_id
+
+            if len(updates) == limit:
+                limited = True
+                upper_bound = updates[-1][0]
+
+            return updates, upper_bound, limited
+
+        return await self.db.runInteraction(
             "get_all_updated_receipts", get_all_updated_receipts_txn
         )