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61 lines
2.3 KiB
Python
61 lines
2.3 KiB
Python
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from fixtures import * # noqa: F401,F403
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from test_lightningd import wait_for
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import os
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import time
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import unittest
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DEVELOPER = os.getenv("DEVELOPER", "0") == "1"
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@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1 for --dev-broadcast-interval")
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def test_gossip_pruning(node_factory, bitcoind):
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""" Create channel and see it being updated in time before pruning
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"""
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opts = {'channel-update-interval': 5}
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l1, l2, l3 = node_factory.get_nodes(3, opts)
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l1.rpc.connect(l2.info['id'], 'localhost', l2.info['port'])
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l2.rpc.connect(l3.info['id'], 'localhost', l3.info['port'])
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scid1 = l1.fund_channel(l2, 10**6)
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scid2 = l2.fund_channel(l3, 10**6)
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bitcoind.rpc.generate(6)
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# Channels should be activated locally
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wait_for(lambda: [c['active'] for c in l1.rpc.listchannels()['channels']] == [True] * 4)
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wait_for(lambda: [c['active'] for c in l2.rpc.listchannels()['channels']] == [True] * 4)
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wait_for(lambda: [c['active'] for c in l3.rpc.listchannels()['channels']] == [True] * 4)
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# All of them should send a keepalive message
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l1.daemon.wait_for_logs([
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'Sending keepalive channel_update for {}'.format(scid1),
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])
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l2.daemon.wait_for_logs([
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'Sending keepalive channel_update for {}'.format(scid1),
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'Sending keepalive channel_update for {}'.format(scid2),
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])
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l3.daemon.wait_for_logs([
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'Sending keepalive channel_update for {}'.format(scid2),
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])
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# Now kill l3, so that l2 and l1 can prune it from their view after 10 seconds
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# FIXME: This sleep() masks a real bug: that channeld sends a
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# channel_update message (to disable the channel) with same
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# timestamp as the last keepalive, and thus is ignored. The minimal
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# fix is to backdate the keepalives 1 second, but maybe we should
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# simply have gossipd generate all updates?
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time.sleep(1)
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l3.stop()
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l1.daemon.wait_for_log("Pruning channel {} from network view".format(scid2))
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l2.daemon.wait_for_log("Pruning channel {} from network view".format(scid2))
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assert scid2 not in [c['short_channel_id'] for c in l1.rpc.listchannels()['channels']]
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assert scid2 not in [c['short_channel_id'] for c in l2.rpc.listchannels()['channels']]
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assert l3.info['id'] not in [n['nodeid'] for n in l1.rpc.listnodes()['nodes']]
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assert l3.info['id'] not in [n['nodeid'] for n in l2.rpc.listnodes()['nodes']]
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