from networksim import NetworkSimulator from ghost_node import Node, NOTARIES, Block, Sig, genesis, SLOT_SIZE from distributions import normal_distribution net = NetworkSimulator(latency=150) notaries = [Node(i, net, ts=max(normal_distribution(50, 50)(), 0) * 0.1, sleepy=False) for i in range(NOTARIES)] net.agents = notaries net.generate_peers() for i in range(12000): net.tick() for n in notaries: print("Local timestamp: %.1f, timequeue len %d" % (n.ts, len(n.timequeue))) print("Main chain head: %d" % n.blocks[n.main_chain[-1]].height) print("Total main chain blocks received: %d" % (len([b for b in n.blocks.values() if isinstance(b, Block)]) - 1)) import matplotlib.pyplot as plt import networkx as nx import random G=nx.Graph() #positions = {genesis.hash: 0, beacon_genesis.hash: 0} #queue = [ for b in n.blocks.values(): if b.height > 0: if isinstance(b, Block): G.add_edge(b.hash, b.parent_hash, color='b') for s in n.sigs.values(): G.add_edge(s.hash, s.targets[0], color='0.75') cache = {genesis.hash: 0} def mkoffset(b): if b.hash not in cache: cache[b.hash] = cache[b.parent_hash] + random.randrange(35) return cache[b.hash] pos={b'\x00'*32: (0, 0)} for b in sorted(n.blocks.values(), key=lambda b: b.height): x,y = pos[b.parent_hash] pos[b.hash] = (x + (random.randrange(5) if b.hash in n.main_chain else -random.randrange(5)), y+10) for s in n.sigs.values(): parent = n.blocks[s.targets[0]] x,y = pos[parent.hash] pos[s.hash] = (x - 2 + random.randrange(5), y + 5) finalized = {k:v for k,v in pos.items() if k in n.finalized} justified = {k:v for k,v in pos.items() if k in n.justified and k not in n.finalized} unjustified = {k:v for k,v in pos.items() if k not in n.justified and k in n.blocks} sigs = {k:v for k,v in pos.items() if k not in n.blocks} edges = G.edges() colors = [G[u][v]['color'] for u,v in edges] nx.draw_networkx_nodes(G, pos, nodelist=sigs.keys(), node_size=5, node_shape='o',node_color='0.75') nx.draw_networkx_nodes(G, pos, nodelist=unjustified.keys(), node_size=10, node_shape='o',node_color='0.75') nx.draw_networkx_nodes(G, pos, nodelist=justified.keys(), node_size=16, node_shape='o',node_color='y') nx.draw_networkx_nodes(G, pos, nodelist=finalized.keys(), node_size=25, node_shape='o',node_color='g') # nx.draw_networkx_labels(G, pos, {h: n.scores.get(h, 0) for h in n.blocks.keys()}, font_size=5) blockedges = [(u,v) for (u,v) in edges if G[u][v]['color'] == 'b'] otheredges = [(u,v) for (u,v) in edges if G[u][v]['color'] == '0.75'] nx.draw_networkx_edges(G, pos, edgelist=otheredges, width=1, edge_color='0.75') nx.draw_networkx_edges(G, pos, edgelist=blockedges, width=2, edge_color='b') print('Scores:', [n.scores.get(c, 0) for c in n.main_chain]) plt.axis('off') # plt.savefig("degree.png", bbox_inches="tight") plt.show()