Initial commit of RM server-side impl

(See https://docs.google.com/document/d/1UWqdS-e1sdwkLDUY0wA4gZyIkRp-ekjsLZ8k6g_Zvso/edit#heading=h.lndohpg8at5u)

2 files changed, 153 insertions, 0 deletions

diff --git a/synapse/handlers/read_marker.py b/synapse/handlers/read_marker.py
new file mode 100644
index 0000000000..77164f3f49
--- /dev/null
+++ b/synapse/handlers/read_marker.py
@@ -0,0 +1,82 @@
+# -*- coding: utf-8 -*-
+# Copyright 2015, 2016 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 BaseHandler
+
+from twisted.internet import defer
+
+from synapse.util.logcontext import PreserveLoggingContext
+from synapse.types import get_domain_from_id
+
+import logging
+
+
+logger = logging.getLogger(__name__)
+
+
+class ReadMarkerHandler(BaseHandler):
+    def __init__(self, hs):
+        super(ReadMarkerHandler, self).__init__(hs)
+
+        self.server_name = hs.config.server_name
+        self.store = hs.get_datastore()
+
+    @defer.inlineCallbacks
+    def received_client_read_marker(self, room_id, user_id, event_id):
+        """NEEDS DOC
+        """
+
+        room_id = read_marker["room_id"]
+        user_id = read_marker["user_id"]
+        event_id = read_marker["event_id"]
+
+        # Get ordering for existing read marker
+        account_data = yield self.store.get_account_data_for_room(user_id, room_id)
+        existing_read_marker = account_data["m.read_marker"]
+
+        if existing_read_marker:
+            # Get ordering for new read marker
+            res = self.store._simple_select_one_txn(
+                txn,
+                table="events",
+                retcols=["topological_ordering", "stream_ordering"],
+                keyvalues={"event_id": event_id},
+                allow_none=True
+            )
+            new_to = int(res["topological_ordering"]) if res else None
+            new_so = int(res["stream_ordering"]) if res else None
+
+            res = self.store._simple_select_one_txn(
+                txn,
+                table="events",
+                retcols=["topological_ordering", "stream_ordering"],
+                keyvalues={"event_id": existing_read_marker.content.marker},
+                allow_none=True
+            )
+            existing_to = int(res["topological_ordering"]) if res else None
+            existing_so = int(res["stream_ordering"]) if res else None
+
+            if new_to > existing_to:
+                return False
+            elif new_to == existing_to and new_so >= existing_so:
+                return False
+
+        # Update account data
+        content = {
+            "marker": event_id
+        }
+        yield self.store.add_account_data_to_room(
+            user_id, room_id, "m.read_marker", content
+        )
diff --git a/synapse/rest/client/v2_alpha/read_marker.py b/synapse/rest/client/v2_alpha/read_marker.py
new file mode 100644
index 0000000000..02408eaf10
--- /dev/null
+++ b/synapse/rest/client/v2_alpha/read_marker.py
@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 Vector Creations 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 SynapseError
+from synapse.http.servlet import RestServlet, parse_json_object_from_request
+from ._base import client_v2_patterns
+
+import logging
+
+
+logger = logging.getLogger(__name__)
+
+
+class ReceiptRestServlet(RestServlet):
+    PATTERNS = client_v2_patterns(
+        "/rooms/(?P<room_id>[^/]*)"
+        "/read_marker$"
+    )
+
+    def __init__(self, hs):
+        super(ReceiptRestServlet, self).__init__()
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.receipts_handler = hs.get_receipts_handler()
+        self.read_marker_handler = hs.get_read_marker_handler()
+        self.presence_handler = hs.get_presence_handler()
+
+    @defer.inlineCallbacks
+    def on_POST(self, request, room_id, receipt_type, event_id):
+        requester = yield self.auth.get_user_by_req(request)
+
+        yield self.presence_handler.bump_presence_active_time(requester.user)
+
+        body = parse_json_object_from_request(request)
+
+        if "m.read" in body:
+            read_event_id = body["m.read"];
+            yield self.receipts_handler.received_client_receipt(
+                room_id,
+                "m.read",
+                user_id=requester.user.to_string(),
+                event_id=read_event_id
+            )
+
+        if "m.read_marker" in body:
+            read_marker_event_id = body["m.read_marker"]
+            yield self.read_marker_handler.received_client_read_marker(
+                room_id,
+                user_id=requester.user.to_string(),
+                event_id=read_marker_event_id
+            )
+
+        defer.returnValue((200, {}))
+
+
+def register_servlets(hs, http_server):
+    ReceiptRestServlet(hs).register(http_server)