def writer(element_pairs):
from libdvid import DVIDNodeService, Vertex, Edge
# write graph information
node_service = DVIDNodeService(str(server), str(uuid))
if element_pairs is None:
return
vertices = []
edges = []
for element_pair in element_pairs:
edge, weight = element_pair
v1, v2 = edge
if v2 == -1:
vertices.append(Vertex(v1, weight))
else:
edges.append(Edge(v1, v2, weight))
if len(vertices) > 0:
node_service.update_vertices(str(graph_name), vertices)
if len(edges) > 0:
node_service.update_edges(str(graph_name), edges)
return []
