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-rw-r--r--synapse/storage/user_directory.py55
1 files changed, 40 insertions, 15 deletions
diff --git a/synapse/storage/user_directory.py b/synapse/storage/user_directory.py
index a8781b0e5d..ce48212265 100644
--- a/synapse/storage/user_directory.py
+++ b/synapse/storage/user_directory.py
@@ -168,14 +168,14 @@ class UserDirectoryStore(SQLBaseStore):
             if isinstance(self.database_engine, PostgresEngine):
                 # We weight the localpart most highly, then display name and finally
                 # server name
-                if new_entry:
+                if self.database_engine.can_native_upsert:
                     sql = """
                         INSERT INTO user_directory_search(user_id, vector)
                         VALUES (?,
                             setweight(to_tsvector('english', ?), 'A')
                             || setweight(to_tsvector('english', ?), 'D')
                             || setweight(to_tsvector('english', COALESCE(?, '')), 'B')
-                        )
+                        ) ON CONFLICT (user_id) DO UPDATE SET vector=EXCLUDED.vector
                     """
                     txn.execute(
                         sql,
@@ -185,20 +185,45 @@ class UserDirectoryStore(SQLBaseStore):
                         )
                     )
                 else:
-                    sql = """
-                        UPDATE user_directory_search
-                        SET vector = setweight(to_tsvector('english', ?), 'A')
-                            || setweight(to_tsvector('english', ?), 'D')
-                            || setweight(to_tsvector('english', COALESCE(?, '')), 'B')
-                        WHERE user_id = ?
-                    """
-                    txn.execute(
-                        sql,
-                        (
-                            get_localpart_from_id(user_id), get_domain_from_id(user_id),
-                            display_name, user_id,
+                    # TODO: Remove this code after we've bumped the minimum version
+                    # of postgres to always support upserts, so we can get rid of
+                    # `new_entry` usage
+                    if new_entry is True:
+                        sql = """
+                            INSERT INTO user_directory_search(user_id, vector)
+                            VALUES (?,
+                                setweight(to_tsvector('english', ?), 'A')
+                                || setweight(to_tsvector('english', ?), 'D')
+                                || setweight(to_tsvector('english', COALESCE(?, '')), 'B')
+                            )
+                        """
+                        txn.execute(
+                            sql,
+                            (
+                                user_id, get_localpart_from_id(user_id),
+                                get_domain_from_id(user_id), display_name,
+                            )
+                        )
+                    elif new_entry is False:
+                        sql = """
+                            UPDATE user_directory_search
+                            SET vector = setweight(to_tsvector('english', ?), 'A')
+                                || setweight(to_tsvector('english', ?), 'D')
+                                || setweight(to_tsvector('english', COALESCE(?, '')), 'B')
+                            WHERE user_id = ?
+                        """
+                        txn.execute(
+                            sql,
+                            (
+                                get_localpart_from_id(user_id),
+                                get_domain_from_id(user_id),
+                                display_name, user_id,
+                            )
+                        )
+                    else:
+                        raise RuntimeError(
+                            "upsert returned None when 'can_native_upsert' is False"
                         )
-                    )
             elif isinstance(self.database_engine, Sqlite3Engine):
                 value = "%s %s" % (user_id, display_name,) if display_name else user_id
                 self._simple_upsert_txn(