Add appservice handler and store. Glue together rest > handler > store.

synapse/storage/appservice.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+# Copyright 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 twisted.internet import defer
+
+from synapse.api.errors import StoreError
+
+from ._base import SQLBaseStore
+
+
+class ApplicationServiceStore(SQLBaseStore):
+
+    def __init__(self, hs):
+        super(ApplicationServiceStore, self).__init__(hs)
+
+        self.clock = hs.get_clock()
+
+    @defer.inlineCallbacks
+    def get_app_service(self, as_token):
+        """Get the application service with the given token.
+
+        Args:
+            token (str): The application service token.
+        Raises:
+            StoreError if there was a problem retrieving this.
+        """
+        row = self._simple_select_one(
+            "application_services", {"token": as_token},
+            ["url", "token"]
+        )
+        if not row:
+            raise StoreError(400, "Bad application services token supplied.")
+        defer.returnValue(row)