Imported Upstream version 0.11.0

1 files changed, 152 insertions, 0 deletions

diff --git a/synapse/storage/directory.py b/synapse/storage/directory.py
new file mode 100644
index 00000000..d92028ea
--- /dev/null
+++ b/synapse/storage/directory.py
@@ -0,0 +1,152 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014, 2015 OpenMarket 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.
+
+from ._base import SQLBaseStore
+from synapse.util.caches.descriptors import cached
+
+from synapse.api.errors import SynapseError
+
+from twisted.internet import defer
+
+from collections import namedtuple
+
+
+RoomAliasMapping = namedtuple(
+    "RoomAliasMapping",
+    ("room_id", "room_alias", "servers",)
+)
+
+
+class DirectoryStore(SQLBaseStore):
+
+    @defer.inlineCallbacks
+    def get_association_from_room_alias(self, room_alias):
+        """ Get's the room_id and server list for a given room_alias
+
+        Args:
+            room_alias (RoomAlias)
+
+        Returns:
+            Deferred: results in namedtuple with keys "room_id" and
+            "servers" or None if no association can be found
+        """
+        room_id = yield self._simple_select_one_onecol(
+            "room_aliases",
+            {"room_alias": room_alias.to_string()},
+            "room_id",
+            allow_none=True,
+            desc="get_association_from_room_alias",
+        )
+
+        if not room_id:
+            defer.returnValue(None)
+            return
+
+        servers = yield self._simple_select_onecol(
+            "room_alias_servers",
+            {"room_alias": room_alias.to_string()},
+            "server",
+            desc="get_association_from_room_alias",
+        )
+
+        if not servers:
+            defer.returnValue(None)
+            return
+
+        defer.returnValue(
+            RoomAliasMapping(room_id, room_alias.to_string(), servers)
+        )
+
+    @defer.inlineCallbacks
+    def create_room_alias_association(self, room_alias, room_id, servers):
+        """ Creates an associatin between  a room alias and room_id/servers
+
+        Args:
+            room_alias (RoomAlias)
+            room_id (str)
+            servers (list)
+
+        Returns:
+            Deferred
+        """
+        try:
+            yield self._simple_insert(
+                "room_aliases",
+                {
+                    "room_alias": room_alias.to_string(),
+                    "room_id": room_id,
+                },
+                desc="create_room_alias_association",
+            )
+        except self.database_engine.module.IntegrityError:
+            raise SynapseError(
+                409, "Room alias %s already exists" % room_alias.to_string()
+            )
+
+        for server in servers:
+            # TODO(erikj): Fix this to bulk insert
+            yield self._simple_insert(
+                "room_alias_servers",
+                {
+                    "room_alias": room_alias.to_string(),
+                    "server": server,
+                },
+                desc="create_room_alias_association",
+            )
+        self.get_aliases_for_room.invalidate((room_id,))
+
+    @defer.inlineCallbacks
+    def delete_room_alias(self, room_alias):
+        room_id = yield self.runInteraction(
+            "delete_room_alias",
+            self._delete_room_alias_txn,
+            room_alias,
+        )
+
+        self.get_aliases_for_room.invalidate((room_id,))
+        defer.returnValue(room_id)
+
+    def _delete_room_alias_txn(self, txn, room_alias):
+        txn.execute(
+            "SELECT room_id FROM room_aliases WHERE room_alias = ?",
+            (room_alias.to_string(),)
+        )
+
+        res = txn.fetchone()
+        if res:
+            room_id = res[0]
+        else:
+            return None
+
+        txn.execute(
+            "DELETE FROM room_aliases WHERE room_alias = ?",
+            (room_alias.to_string(),)
+        )
+
+        txn.execute(
+            "DELETE FROM room_alias_servers WHERE room_alias = ?",
+            (room_alias.to_string(),)
+        )
+
+        return room_id
+
+    @cached()
+    def get_aliases_for_room(self, room_id):
+        return self._simple_select_onecol(
+            "room_aliases",
+            {"room_id": room_id},
+            "room_alias",
+            desc="get_aliases_for_room",
+        )