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-rw-r--r--synapse/federation/replication.py16
-rw-r--r--synapse/handlers/federation.py72
-rw-r--r--synapse/state.py2
-rw-r--r--synapse/storage/__init__.py54
-rw-r--r--synapse/storage/state.py2
5 files changed, 99 insertions, 47 deletions
diff --git a/synapse/federation/replication.py b/synapse/federation/replication.py
index 89c0ef49e9..6bfb30b42d 100644
--- a/synapse/federation/replication.py
+++ b/synapse/federation/replication.py
@@ -559,7 +559,7 @@ class ReplicationLayer(object):
             if not exists:
                 try:
                     logger.debug(
-                        "Getting missing auth event %s from %s",
+                        "_handle_new_pdu fetch missing auth event %s from %s",
                         e_id,
                         origin,
                     )
@@ -585,6 +585,11 @@ class ReplicationLayer(object):
                 pdu.room_id
             )
 
+            logger.debug(
+                "_handle_new_pdu min_depth for %s: %d",
+                pdu.room_id, min_depth
+            )
+
             if min_depth and pdu.depth > min_depth:
                 for event_id, hashes in pdu.prev_events:
                     exists = yield self._get_persisted_pdu(
@@ -594,7 +599,10 @@ class ReplicationLayer(object):
                     )
 
                     if not exists:
-                        logger.debug("Requesting pdu %s", event_id)
+                        logger.debug(
+                            "_handle_new_pdu requesting pdu %s",
+                            event_id
+                        )
 
                         try:
                             yield self.get_pdu(
@@ -608,6 +616,10 @@ class ReplicationLayer(object):
             else:
                 # We need to get the state at this event, since we have reached
                 # a backward extremity edge.
+                logger.debug(
+                    "_handle_new_pdu getting state for %s",
+                    pdu.room_id
+                )
                 state = yield self.get_state_for_context(
                     origin, pdu.room_id, pdu.event_id,
                 )
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 14066ac4f3..252c1f1684 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -144,11 +144,24 @@ class FederationHandler(BaseHandler):
 
         logger.debug("Event: %s", event)
 
+        # FIXME (erikj): Awful hack to make the case where we are not currently
+        # in the room work
+        current_state = None
+        if state:
+            is_in_room = yield self.auth.check_host_in_room(
+                event.room_id,
+                self.server_name
+            )
+            if not is_in_room:
+                logger.debug("Got event for room we're not in.")
+                current_state = state
+
         try:
             yield self._handle_new_event(
                 event,
                 state=state,
-                backfilled=backfilled
+                backfilled=backfilled,
+                current_state=current_state,
             )
         except AuthError as e:
             raise FederationError(
@@ -161,29 +174,11 @@ class FederationHandler(BaseHandler):
         room = yield self.store.get_room(event.room_id)
 
         if not room:
-            # Huh, let's try and get the current state
-            try:
-                yield self.replication_layer.get_state_for_context(
-                    event.origin, event.room_id, event.event_id,
-                )
-
-                hosts = yield self.store.get_joined_hosts_for_room(
-                    event.room_id
-                )
-                if self.hs.hostname in hosts:
-                    try:
-                        yield self.store.store_room(
-                            room_id=event.room_id,
-                            room_creator_user_id="",
-                            is_public=False,
-                        )
-                    except:
-                        pass
-            except:
-                logger.exception(
-                    "Failed to get current state for room %s",
-                    event.room_id
-                )
+            yield self.store.store_room(
+                room_id=event.room_id,
+                room_creator_user_id="",
+                is_public=False,
+            )
 
         if not backfilled:
             extra_users = []
@@ -244,6 +239,8 @@ class FederationHandler(BaseHandler):
             pdu=event
         )
 
+
+
         defer.returnValue(pdu)
 
     @defer.inlineCallbacks
@@ -327,13 +324,23 @@ class FederationHandler(BaseHandler):
             for e in auth_chain:
                 e.outlier = True
                 yield self._handle_new_event(e)
+                yield self.notifier.on_new_room_event(
+                    e, extra_users=[joinee]
+                )
 
             for e in state:
                 # FIXME: Auth these.
                 e.outlier = True
                 yield self._handle_new_event(e)
+                yield self.notifier.on_new_room_event(
+                    e, extra_users=[joinee]
+                )
 
-            yield self._handle_new_event(event, state=state)
+            yield self._handle_new_event(
+                event,
+                state=state,
+                current_state=state
+            )
 
             yield self.notifier.on_new_room_event(
                 event, extra_users=[joinee]
@@ -554,7 +561,12 @@ class FederationHandler(BaseHandler):
             waiters.pop().callback(None)
 
     @defer.inlineCallbacks
-    def _handle_new_event(self, event, state=None, backfilled=False):
+    def _handle_new_event(self, event, state=None, backfilled=False,
+                          current_state=None):
+        if state:
+            for s in state:
+                yield self._handle_new_event(s)
+
         is_new_state = yield self.state_handler.annotate_event_with_state(
             event,
             old_state=state
@@ -594,7 +606,10 @@ class FederationHandler(BaseHandler):
                 )
 
                 if not e:
-                    raise AuthError(403, "Can't find auth event.")
+                    raise AuthError(
+                        403,
+                        "Can't find auth event %s." % (e_id, )
+                    )
 
                 auth_events[(e.type, e.state_key)] = e
 
@@ -603,5 +618,6 @@ class FederationHandler(BaseHandler):
         yield self.store.persist_event(
             event,
             backfilled=backfilled,
-            is_new_state=(is_new_state and not backfilled)
+            is_new_state=(is_new_state and not backfilled),
+            current_state=current_state,
         )
diff --git a/synapse/state.py b/synapse/state.py
index 1c999e4d79..430665f7ba 100644
--- a/synapse/state.py
+++ b/synapse/state.py
@@ -82,7 +82,7 @@ class StateHandler(object):
         if hasattr(event, "outlier") and event.outlier:
             event.state_group = None
             event.old_state_events = None
-            event.state_events = {}
+            event.state_events = None
             defer.returnValue(False)
             return
 
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index 1231794de0..a5ee923bc3 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -93,7 +93,8 @@ class DataStore(RoomMemberStore, RoomStore,
 
     @defer.inlineCallbacks
     @log_function
-    def persist_event(self, event, backfilled=False, is_new_state=True):
+    def persist_event(self, event, backfilled=False, is_new_state=True,
+                      current_state=None):
         stream_ordering = None
         if backfilled:
             if not self.min_token_deferred.called:
@@ -109,6 +110,7 @@ class DataStore(RoomMemberStore, RoomStore,
                 backfilled=backfilled,
                 stream_ordering=stream_ordering,
                 is_new_state=is_new_state,
+                current_state=current_state,
             )
         except _RollbackButIsFineException:
             pass
@@ -137,7 +139,7 @@ class DataStore(RoomMemberStore, RoomStore,
 
     @log_function
     def _persist_event_txn(self, txn, event, backfilled, stream_ordering=None,
-                           is_new_state=True):
+                           is_new_state=True, current_state=None):
         if event.type == RoomMemberEvent.TYPE:
             self._store_room_member_txn(txn, event)
         elif event.type == FeedbackEvent.TYPE:
@@ -206,8 +208,24 @@ class DataStore(RoomMemberStore, RoomStore,
 
         self._store_state_groups_txn(txn, event)
 
+        if current_state:
+            txn.execute("DELETE FROM current_state_events")
+
+            for s in current_state:
+                self._simple_insert_txn(
+                    txn,
+                    "current_state_events",
+                    {
+                        "event_id": s.event_id,
+                        "room_id": s.room_id,
+                        "type": s.type,
+                        "state_key": s.state_key,
+                    },
+                    or_replace=True,
+                )
+
         is_state = hasattr(event, "state_key") and event.state_key is not None
-        if is_new_state and is_state:
+        if is_state:
             vals = {
                 "event_id": event.event_id,
                 "room_id": event.room_id,
@@ -225,17 +243,18 @@ class DataStore(RoomMemberStore, RoomStore,
                 or_replace=True,
             )
 
-            self._simple_insert_txn(
-                txn,
-                "current_state_events",
-                {
-                    "event_id": event.event_id,
-                    "room_id": event.room_id,
-                    "type": event.type,
-                    "state_key": event.state_key,
-                },
-                or_replace=True,
-            )
+            if is_new_state:
+                self._simple_insert_txn(
+                    txn,
+                    "current_state_events",
+                    {
+                        "event_id": event.event_id,
+                        "room_id": event.room_id,
+                        "type": event.type,
+                        "state_key": event.state_key,
+                    },
+                    or_replace=True,
+                )
 
             for e_id, h in event.prev_state:
                 self._simple_insert_txn(
@@ -312,7 +331,12 @@ class DataStore(RoomMemberStore, RoomStore,
             txn, event.event_id, ref_alg, ref_hash_bytes
         )
 
-        self._update_min_depth_for_room_txn(txn, event.room_id, event.depth)
+        if not outlier:
+            self._update_min_depth_for_room_txn(
+                txn,
+                event.room_id,
+                event.depth
+            )
 
     def _store_redaction(self, txn, event):
         txn.execute(
diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index 55ea567793..e0f44b3e59 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -87,7 +87,7 @@ class StateStore(SQLBaseStore):
         )
 
     def _store_state_groups_txn(self, txn, event):
-        if not event.state_events:
+        if event.state_events is None:
             return
 
         state_group = event.state_group