def main():
"""Simulate basic scenario."""
# Create simulation environment
simulator = Simulator()
# Generate empy contact plan
contact_plan = ContactPlan(1, 50)
# Add a single contact from node_a to node_b from 0s to 10s to the plan
contact_plan.add_contact('node_a', 'node_b', 0, 10000)
# Convert contact plan to contact graph
contact_graph = ContactGraph(contact_plan)
# Generate contact objects and register them
for planned_contact in contact_plan.get_contacts():
# Create a Contact simulation object based on the ContactPlan
# information
contact = Contact(planned_contact.from_time, planned_contact.to_time,
planned_contact.datarate, planned_contact.from_node,
planned_contact.to_node, planned_contact.delay)
# Register the contact as a generator object in the simulation
# environment
simulator.register_contact(contact)
# Generate node objects and register them
for planned_node in contact_plan.get_nodes():
# Generate contact list of node
contact_list = contact_plan.get_outbound_contacts_of_node(planned_node)
# Create a dict that maps the contact identifiers to Contact simulation
# objects
contact_dict = simulator.get_contact_dict(contact_list)
# Create a node simulation object
SimpleCGRNode(planned_node, contact_dict, cgr_basic.cgr, contact_graph,
simulator, [])
# Generate packet generator(s) and register them
generator = BatchPacketGenerator(
1, # Create one packet
1000, # Packet Size: 1000 Bytes
['node_a'], # From 'node_a'
['node_b'], # To 'node_b'
[0]) # At simulation time 0s
# Register the generator as a generator object in the simulation
# environment
simulator.register_generator(generator)
# Run the simulation for 20 seconds (20000 ms)
simulator.run_simulation(20000)
def run_simulation(algorithm, source_list, destination_list):
"""Performs a simulation with a certain algorithm."""
# Create simulation environment
simulator = Simulator()
# Generate contact plan from provided json file
contact_plan = ContactPlan(1, 100, "tests/resources/tvg_g10_s10.json")
# Convert contact plan to contact graph
contact_graph = ContactGraph(contact_plan)
# Create monitoring instance
monitor = ReceptionMonitor(simulator.env)
simulator.register_monitor(monitor)
# Generate contact objects and register them
for planned_contact in contact_plan.get_contacts():
contact = Contact(planned_contact.from_time, planned_contact.to_time,
planned_contact.datarate, planned_contact.from_node,
planned_contact.to_node, planned_contact.delay)
simulator.register_contact(contact)
# Generate node objects and register them
for planned_node in contact_plan.get_nodes():
contact_list = contact_plan.get_outbound_contacts_of_node(planned_node)
contact_dict = simulator.get_contact_dict(contact_list)
SimpleCGRNode(planned_node, contact_dict, algorithm, contact_graph,
simulator, [])
# Generate packet generator(s) and register them
generator = BatchPacketGenerator(200, 10000, source_list, destination_list,
[10.0])
simulator.register_generator(generator)
# Run the simulation
simulator.run_simulation(48000000)
# Return the monitored results
return monitor.packet_dict