def nrr_topology(cls):
"""Return topology for testing NRR caching strategies
"""
# Topology sketch
#
# 0 ---- 2----- 4
# | \
# | s
# | /
# 1 ---- 3 ---- 5
#
topology = IcnTopology(fnss.Topology())
topology.add_path([0, 2, 4, "s", 5, 3, 1])
topology.add_edge(2, 3)
receivers = (0, 1)
source = "s"
caches = (2, 3, 4, 5)
contents = (1, 2, 3, 4)
fnss.add_stack(topology, source, 'source', {'contents': contents})
for v in caches:
fnss.add_stack(topology, v, 'router', {'cache_size': 1})
for v in receivers:
fnss.add_stack(topology, v, 'receiver', {})
fnss.set_delays_constant(topology, 1, 'ms')
return topology
def build_topology(cls):
# Topology sketch
#
# 0 ---- 1 ---- 2 ---- 3 ---- 4
# | |
# | |
# 5 -- 6 - 7 -- 8
#
topology = IcnTopology()
topology.add_path([0, 1, 2, 3, 4], a=1, b=1)
topology.add_path([1, 5, 6, 7, 8, 3], b=2, c=2)
source = 4
receiver = 0
caches = (1, 2, 3, 5, 6, 7, 8)
contents = [1, 2, 3]
fnss.add_stack(topology, source, 'source', {'contents': contents})
fnss.add_stack(topology, receiver, 'receiver', {})
for v in caches:
fnss.add_stack(topology, v, 'router', {'cache_size': 1})
return topology