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-rw-r--r--synapse/federation/federation_client.py6
-rw-r--r--synapse/federation/federation_server.py26
-rw-r--r--synapse/federation/persistence.py4
-rw-r--r--synapse/federation/sender/__init__.py2
-rw-r--r--synapse/federation/sender/transaction_manager.py4
-rw-r--r--synapse/federation/transport/__init__.py4
-rw-r--r--synapse/federation/transport/client.py6
-rw-r--r--synapse/federation/transport/server.py8
8 files changed, 34 insertions, 26 deletions
diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index 545d719652..27f6aff004 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -177,7 +177,7 @@ class FederationClient(FederationBase):
         given destination server.
 
         Args:
-            dest (str): The remote home server to ask.
+            dest (str): The remote homeserver to ask.
             room_id (str): The room_id to backfill.
             limit (int): The maximum number of PDUs to return.
             extremities (list): List of PDU id and origins of the first pdus
@@ -227,7 +227,7 @@ class FederationClient(FederationBase):
         one succeeds.
 
         Args:
-            destinations (list): Which home servers to query
+            destinations (list): Which homeservers to query
             event_id (str): event to fetch
             room_version (str): version of the room
             outlier (bool): Indicates whether the PDU is an `outlier`, i.e. if
@@ -312,7 +312,7 @@ class FederationClient(FederationBase):
     @defer.inlineCallbacks
     @log_function
     def get_state_for_room(self, destination, room_id, event_id):
-        """Requests all of the room state at a given event from a remote home server.
+        """Requests all of the room state at a given event from a remote homeserver.
 
         Args:
             destination (str): The remote homeserver to query for the state.
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py
index d942d77a72..84d4eca041 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015, 2016 OpenMarket Ltd
 # Copyright 2018 New Vector Ltd
+# Copyright 2019 Matrix.org Federation C.I.C
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -73,6 +74,7 @@ class FederationServer(FederationBase):
 
         self.auth = hs.get_auth()
         self.handler = hs.get_handlers().federation_handler
+        self.state = hs.get_state_handler()
 
         self._server_linearizer = Linearizer("fed_server")
         self._transaction_linearizer = Linearizer("fed_txn_handler")
@@ -264,9 +266,6 @@ class FederationServer(FederationBase):
         await self.registry.on_edu(edu_type, origin, content)
 
     async def on_context_state_request(self, origin, room_id, event_id):
-        if not event_id:
-            raise NotImplementedError("Specify an event")
-
         origin_host, _ = parse_server_name(origin)
         await self.check_server_matches_acl(origin_host, room_id)
 
@@ -280,13 +279,18 @@ class FederationServer(FederationBase):
         # - but that's non-trivial to get right, and anyway somewhat defeats
         # the point of the linearizer.
         with (await self._server_linearizer.queue((origin, room_id))):
-            resp = await self._state_resp_cache.wrap(
-                (room_id, event_id),
-                self._on_context_state_request_compute,
-                room_id,
-                event_id,
+            resp = dict(
+                await self._state_resp_cache.wrap(
+                    (room_id, event_id),
+                    self._on_context_state_request_compute,
+                    room_id,
+                    event_id,
+                )
             )
 
+        room_version = await self.store.get_room_version(room_id)
+        resp["room_version"] = room_version
+
         return 200, resp
 
     async def on_state_ids_request(self, origin, room_id, event_id):
@@ -306,7 +310,11 @@ class FederationServer(FederationBase):
         return 200, {"pdu_ids": state_ids, "auth_chain_ids": auth_chain_ids}
 
     async def _on_context_state_request_compute(self, room_id, event_id):
-        pdus = await self.handler.get_state_for_pdu(room_id, event_id)
+        if event_id:
+            pdus = await self.handler.get_state_for_pdu(room_id, event_id)
+        else:
+            pdus = (await self.state.get_current_state(room_id)).values()
+
         auth_chain = await self.store.get_auth_chain([pdu.event_id for pdu in pdus])
 
         return {
diff --git a/synapse/federation/persistence.py b/synapse/federation/persistence.py
index 44edcabed4..d68b4bd670 100644
--- a/synapse/federation/persistence.py
+++ b/synapse/federation/persistence.py
@@ -44,7 +44,7 @@ class TransactionActions(object):
             response code and response body.
         """
         if not transaction.transaction_id:
-            raise RuntimeError("Cannot persist a transaction with no " "transaction_id")
+            raise RuntimeError("Cannot persist a transaction with no transaction_id")
 
         return self.store.get_received_txn_response(transaction.transaction_id, origin)
 
@@ -56,7 +56,7 @@ class TransactionActions(object):
             Deferred
         """
         if not transaction.transaction_id:
-            raise RuntimeError("Cannot persist a transaction with no " "transaction_id")
+            raise RuntimeError("Cannot persist a transaction with no transaction_id")
 
         return self.store.set_received_txn_response(
             transaction.transaction_id, origin, code, response
diff --git a/synapse/federation/sender/__init__.py b/synapse/federation/sender/__init__.py
index 2b2ee8612a..4ebb0e8bc0 100644
--- a/synapse/federation/sender/__init__.py
+++ b/synapse/federation/sender/__init__.py
@@ -49,7 +49,7 @@ sent_pdus_destination_dist_count = Counter(
 
 sent_pdus_destination_dist_total = Counter(
     "synapse_federation_client_sent_pdu_destinations:total",
-    "" "Total number of PDUs queued for sending across all destinations",
+    "Total number of PDUs queued for sending across all destinations",
 )
 
 
diff --git a/synapse/federation/sender/transaction_manager.py b/synapse/federation/sender/transaction_manager.py
index 67b3e1ab6e..5fed626d5b 100644
--- a/synapse/federation/sender/transaction_manager.py
+++ b/synapse/federation/sender/transaction_manager.py
@@ -84,7 +84,7 @@ class TransactionManager(object):
             txn_id = str(self._next_txn_id)
 
             logger.debug(
-                "TX [%s] {%s} Attempting new transaction" " (pdus: %d, edus: %d)",
+                "TX [%s] {%s} Attempting new transaction (pdus: %d, edus: %d)",
                 destination,
                 txn_id,
                 len(pdus),
@@ -103,7 +103,7 @@ class TransactionManager(object):
             self._next_txn_id += 1
 
             logger.info(
-                "TX [%s] {%s} Sending transaction [%s]," " (PDUs: %d, EDUs: %d)",
+                "TX [%s] {%s} Sending transaction [%s], (PDUs: %d, EDUs: %d)",
                 destination,
                 txn_id,
                 transaction.transaction_id,
diff --git a/synapse/federation/transport/__init__.py b/synapse/federation/transport/__init__.py
index d9fcc520a0..5db733af98 100644
--- a/synapse/federation/transport/__init__.py
+++ b/synapse/federation/transport/__init__.py
@@ -14,9 +14,9 @@
 # limitations under the License.
 
 """The transport layer is responsible for both sending transactions to remote
-home servers and receiving a variety of requests from other home servers.
+homeservers and receiving a variety of requests from other homeservers.
 
-By default this is done over HTTPS (and all home servers are required to
+By default this is done over HTTPS (and all homeservers are required to
 support HTTPS), however individual pairings of servers may decide to
 communicate over a different (albeit still reliable) protocol.
 """
diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 920fa86853..dc95ab2113 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -44,7 +44,7 @@ class TransportLayerClient(object):
         given event.
 
         Args:
-            destination (str): The host name of the remote home server we want
+            destination (str): The host name of the remote homeserver we want
                 to get the state from.
             context (str): The name of the context we want the state of
             event_id (str): The event we want the context at.
@@ -68,7 +68,7 @@ class TransportLayerClient(object):
         given event. Returns the state's event_id's
 
         Args:
-            destination (str): The host name of the remote home server we want
+            destination (str): The host name of the remote homeserver we want
                 to get the state from.
             context (str): The name of the context we want the state of
             event_id (str): The event we want the context at.
@@ -91,7 +91,7 @@ class TransportLayerClient(object):
         """ Requests the pdu with give id and origin from the given server.
 
         Args:
-            destination (str): The host name of the remote home server we want
+            destination (str): The host name of the remote homeserver we want
                 to get the state from.
             event_id (str): The id of the event being requested.
             timeout (int): How long to try (in ms) the destination for before
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index d6c23f22bd..fefc789c85 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -421,7 +421,7 @@ class FederationEventServlet(BaseFederationServlet):
         return await self.handler.on_pdu_request(origin, event_id)
 
 
-class FederationStateServlet(BaseFederationServlet):
+class FederationStateV1Servlet(BaseFederationServlet):
     PATH = "/state/(?P<context>[^/]*)/?"
 
     # This is when someone asks for all data for a given context.
@@ -429,7 +429,7 @@ class FederationStateServlet(BaseFederationServlet):
         return await self.handler.on_context_state_request(
             origin,
             context,
-            parse_string_from_args(query, "event_id", None, required=True),
+            parse_string_from_args(query, "event_id", None, required=False),
         )
 
 
@@ -714,7 +714,7 @@ class PublicRoomList(BaseFederationServlet):
 
     This API returns information in the same format as /publicRooms on the
     client API, but will only ever include local public rooms and hence is
-    intended for consumption by other home servers.
+    intended for consumption by other homeservers.
 
     GET /publicRooms HTTP/1.1
 
@@ -1360,7 +1360,7 @@ class RoomComplexityServlet(BaseFederationServlet):
 FEDERATION_SERVLET_CLASSES = (
     FederationSendServlet,
     FederationEventServlet,
-    FederationStateServlet,
+    FederationStateV1Servlet,
     FederationStateIdsServlet,
     FederationBackfillServlet,
     FederationQueryServlet,