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authorErik Johnston <erik@matrix.org>2014-09-03 15:50:05 +0100
committerErik Johnston <erik@matrix.org>2014-09-03 15:50:05 +0100
commitb5f9d47c89a52d46ccbe4cc364d57e93c72fd22c (patch)
tree3e0864f89166312849a9b2b83643ce7d62259c20 /synapse/state.py
parentSnapshot prev_state for generic events (diff)
downloadsynapse-b5f9d47c89a52d46ccbe4cc364d57e93c72fd22c.tar.xz
Handle new state events which don't have a common ancestor
Diffstat (limited to 'synapse/state.py')
-rw-r--r--synapse/state.py12
1 files changed, 12 insertions, 0 deletions
diff --git a/synapse/state.py b/synapse/state.py
index e1a1a159bb..bb208cafc7 100644
--- a/synapse/state.py
+++ b/synapse/state.py
@@ -179,6 +179,18 @@ class StateHandler(object):
                 key=lambda x: x.depth
             )
 
+            if not hasattr(missing_prev, "prev_state_id"):
+                # FIXME Hmm
+                # temporary fallback
+                for algo in conflict_res:
+                    new_res, curr_res = algo(new_branch, current_branch)
+
+                    if new_res < curr_res:
+                        defer.returnValue(False)
+                    elif new_res > curr_res:
+                        defer.returnValue(True)
+                return
+
             pdu_id = missing_prev.prev_state_id
             origin = missing_prev.prev_state_origin