43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
import math
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import random
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from collections import defaultdict
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import simpy
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from config import Config
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from sphinx import SphinxPacket
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class P2p:
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def __init__(self, env: simpy.Environment, config: Config):
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self.env = env
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self.config = config
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self.nodes = []
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self.message_sizes = []
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self.nodes_emitted_msg_around_interval = defaultdict(int)
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def add_node(self, nodes):
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self.nodes.extend(nodes)
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# TODO: This should accept only bytes, but SphinxPacket is also accepted until we implement the Sphinx serde
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def broadcast(self, sender, msg: SphinxPacket | bytes):
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self.log("Broadcasting a msg: %d bytes" % len(msg))
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self.message_sizes.append(len(msg))
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now_frac, now_int = math.modf(self.env.now)
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if now_int % self.config.message_interval == 0 and now_frac <= self.config.max_message_prep_time:
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self.nodes_emitted_msg_around_interval[sender] += 1
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# Yield 0 to ensure that the broadcast is done in the same time step.
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# Without this, SimPy complains that the broadcast func is not a generator.
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yield self.env.timeout(0)
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# TODO: gossipsub or something similar
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for node in self.nodes:
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self.env.process(node.receive_message(msg))
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def get_nodes(self, n: int):
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return random.sample(self.nodes, n)
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def log(self, msg):
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print("P2P at %g: %s" % (self.env.now, msg)) |