From f383d5a8011a8cbef7aa92d247e1f725a60fa82a Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 30 Apr 2015 17:12:52 +0100
Subject: [PATCH] Fix up get_current_state and get_room_name_and_aliases
 queries to parse events in transaction

---
 synapse/storage/room.py  | 27 +++++++++++----------------
 synapse/storage/state.py | 35 +++++++++++++++++++----------------
 2 files changed, 30 insertions(+), 32 deletions(-)

diff --git a/synapse/storage/room.py b/synapse/storage/room.py
index 78572bbdd2..2b1864a82f 100644
--- a/synapse/storage/room.py
+++ b/synapse/storage/room.py
@@ -188,26 +188,21 @@ class RoomStore(SQLBaseStore):
 
     @defer.inlineCallbacks
     def get_room_name_and_aliases(self, room_id):
-        del_sql = (
-            "SELECT event_id FROM redactions WHERE redacts = e.event_id "
-            "LIMIT 1"
-        )
+        def f(txn):
+            sql = (
+                "SELECT event_id FROM events current_state_events "
+                "WHERE room_id = ? "
+            )
 
-        sql = (
-            "SELECT e.*, (%(redacted)s) AS redacted FROM events as e "
-            "INNER JOIN current_state_events as c ON e.event_id = c.event_id "
-            "WHERE c.room_id = ? "
-        ) % {
-            "redacted": del_sql,
-        }
+            sql += " AND ((type = 'm.room.name' AND state_key = '')"
+            sql += " OR type = 'm.room.aliases')"
 
-        sql += " AND ((c.type = 'm.room.name' AND c.state_key = '')"
-        sql += " OR c.type = 'm.room.aliases')"
-        args = (room_id,)
+            txn.execute(sql, (room_id,))
+            results = self.cursor_to_dict(txn)
 
-        results = yield self._execute_and_decode("get_current_state", sql, *args)
+            return self._parse_events_txn(txn, results)
 
-        events = yield self._parse_events(results)
+        events = yield self.runInteraction("get_room_name_and_aliases", f)
 
         name = None
         aliases = []
diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index 95bc15c0dc..8b3ed244af 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -128,25 +128,28 @@ class StateStore(SQLBaseStore):
 
     @defer.inlineCallbacks
     def get_current_state(self, room_id, event_type=None, state_key=""):
-        sql = (
-            "SELECT e.*, r.event_id FROM events as e"
-            " LEFT JOIN redactions as r ON r.redacts = e.event_id"
-            " INNER JOIN current_state_events as c ON e.event_id = c.event_id"
-            " WHERE c.room_id = ? "
-        )
+        def f(txn):
+            sql = (
+                "SELECT e.event_id FROM events as e"
+                " INNER JOIN current_state_events as c ON e.event_id = c.event_id"
+                " WHERE c.room_id = ? "
+            )
 
-        if event_type and state_key is not None:
-            sql += " AND c.type = ? AND c.state_key = ? "
-            args = (room_id, event_type, state_key)
-        elif event_type:
-            sql += " AND c.type = ?"
-            args = (room_id, event_type)
-        else:
-            args = (room_id, )
+            if event_type and state_key is not None:
+                sql += " AND c.type = ? AND c.state_key = ? "
+                args = (room_id, event_type, state_key)
+            elif event_type:
+                sql += " AND c.type = ?"
+                args = (room_id, event_type)
+            else:
+                args = (room_id, )
 
-        results = yield self._execute_and_decode("get_current_state", sql, *args)
+            txn.execute(sql, args)
+            results = self.cursor_to_dict(txn)
 
-        events = yield self._parse_events(results)
+            return self._parse_events_txn(results)
+
+        events = self.runInteraction("get_current_state", f)
         defer.returnValue(events)