def add_graph_struct(self, graph_name: str, graph_struct: GraphStruct) -> int:
graph_view = self.graphs.collection_view(graph_name)
graph_struct.graph_name = graph_name
try:
new_revision = self.read_graph_struct(graph_name).revision + 1
except:
new_revision = 0
graph_struct.revision = new_revision
# FIXME(luckygeck): possible race condition
graph_view.put(str(new_revision), graph_struct.to_json())
return new_revision
