diff --git a/synapse/storage/group_server.py b/synapse/storage/group_server.py
index d03858234b..db316a27ec 100644
--- a/synapse/storage/group_server.py
+++ b/synapse/storage/group_server.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2017 Vector Creations Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -29,6 +30,24 @@ _DEFAULT_ROLE_ID = ""
class GroupServerStore(SQLBaseStore):
+ def set_group_join_policy(self, group_id, join_policy):
+ """Set the join policy of a group.
+
+ join_policy can be one of:
+ * "invite"
+ * "open"
+ """
+ return self._simple_update_one(
+ table="groups",
+ keyvalues={
+ "group_id": group_id,
+ },
+ updatevalues={
+ "join_policy": join_policy,
+ },
+ desc="set_group_join_policy",
+ )
+
def get_group(self, group_id):
return self._simple_select_one(
table="groups",
diff --git a/synapse/storage/prepare_database.py b/synapse/storage/prepare_database.py
index 68675e15d2..04411a665f 100644
--- a/synapse/storage/prepare_database.py
+++ b/synapse/storage/prepare_database.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014 - 2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
diff --git a/synapse/storage/schema/delta/48/groups_joinable.sql b/synapse/storage/schema/delta/48/groups_joinable.sql
new file mode 100644
index 0000000000..ce26eaf0c9
--- /dev/null
+++ b/synapse/storage/schema/delta/48/groups_joinable.sql
@@ -0,0 +1,22 @@
+/* Copyright 2018 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * This isn't a real ENUM because sqlite doesn't support it
+ * and we use a default of NULL for inserted rows and interpret
+ * NULL at the python store level as necessary so that existing
+ * rows are given the correct default policy.
+ */
+ALTER TABLE groups ADD COLUMN join_policy TEXT NOT NULL DEFAULT 'invite';
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