async def pay(pay_req):
with self.subTest(msg="bad path: edges do not chain together"):
path = [
PathEdge(node_id=graph.w_c.node_keypair.pubkey,
short_channel_id=graph.chan_ab.short_channel_id),
PathEdge(node_id=graph.w_d.node_keypair.pubkey,
short_channel_id=graph.chan_bd.short_channel_id)
]
result, log = await graph.w_a._pay(pay_req, full_path=path)
self.assertFalse(result)
self.assertTrue(
isinstance(log[0].exception, LNPathInconsistent))
with self.subTest(
msg="bad path: last node id differs from invoice pubkey"):
path = [
PathEdge(node_id=graph.w_b.node_keypair.pubkey,
short_channel_id=graph.chan_ab.short_channel_id)
]
result, log = await graph.w_a._pay(pay_req, full_path=path)
self.assertFalse(result)
self.assertTrue(
isinstance(log[0].exception, LNPathInconsistent))
with self.subTest(msg="good path"):
path = [
PathEdge(node_id=graph.w_b.node_keypair.pubkey,
short_channel_id=graph.chan_ab.short_channel_id),
PathEdge(node_id=graph.w_d.node_keypair.pubkey,
short_channel_id=graph.chan_bd.short_channel_id)
]
result, log = await graph.w_a._pay(pay_req, full_path=path)
self.assertTrue(result)
self.assertEqual(
[edge.short_channel_id for edge in path],
[edge.short_channel_id for edge in log[0].route])
raise PaymentDone()
def test_find_path_for_payment(self):
self.prepare_graph()
amount_to_send = 100000
path = self.path_finder.find_path_for_payment(
nodeA=node('a'),
nodeB=node('e'),
invoice_amount_msat=amount_to_send)
self.assertEqual([
PathEdge(start_node=node('a'),
end_node=node('b'),
short_channel_id=channel(3)),
PathEdge(start_node=node('b'),
end_node=node('e'),
short_channel_id=channel(2)),
], path)
route = self.path_finder.create_route_from_path(path)
self.assertEqual(node('b'), route[0].node_id)
self.assertEqual(channel(3), route[0].short_channel_id)
self.cdb.stop()
asyncio.run_coroutine_threadsafe(self.cdb.stopped_event.wait(),
self.asyncio_loop).result()
def test_find_path_for_payment(self):
class fake_network:
config = self.config
asyncio_loop = asyncio.get_event_loop()
trigger_callback = lambda *args: None
register_callback = lambda *args: None
interface = None
fake_network.channel_db = lnrouter.ChannelDB(fake_network())
fake_network.channel_db.data_loaded.set()
cdb = fake_network.channel_db
path_finder = lnrouter.LNPathFinder(cdb)
self.assertEqual(cdb.num_channels, 0)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'node_id_2': b'\x02cccccccccccccccccccccccccccccccc',
'bitcoin_key_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_2': b'\x02cccccccccccccccccccccccccccccccc',
'short_channel_id': bfh('0000000000000001'),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
self.assertEqual(cdb.num_channels, 1)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'node_id_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'bitcoin_key_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'short_channel_id': bfh('0000000000000002'),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'node_id_2': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'bitcoin_key_2': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'short_channel_id': bfh('0000000000000003'),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'len': b'\x00\x00',
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02cccccccccccccccccccccccccccccccc',
'node_id_2': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_1': b'\x02cccccccccccccccccccccccccccccccc',
'bitcoin_key_2': b'\x02dddddddddddddddddddddddddddddddd',
'short_channel_id': bfh('0000000000000004'),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'len': b'\x00\x00',
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02dddddddddddddddddddddddddddddddd',
'node_id_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'bitcoin_key_1': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'short_channel_id': bfh('0000000000000005'),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'len': b'\x00\x00',
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'node_id_2': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'bitcoin_key_2': b'\x02dddddddddddddddddddddddddddddddd',
'short_channel_id': bfh('0000000000000006'),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'len': b'\x00\x00',
'features': b''
},
trusted=True)
o = lambda i: i.to_bytes(8, "big")
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000001'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000001'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000002'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': o(99),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000002'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000003'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000003'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000004'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000004'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000005'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000005'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(999),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000006'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(99999999),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000006'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': o(10),
'htlc_minimum_msat': o(250),
'fee_base_msat': o(100),
'fee_proportional_millionths': o(150),
'chain_hash': QtumTestnet.rev_genesis_bytes(),
'timestamp': b'\x00\x00\x00\x00'
})
path = path_finder.find_path_for_payment(
b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee', 100000)
self.assertEqual([
PathEdge(node_id=b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
short_channel_id=bfh('0000000000000003')),
PathEdge(node_id=b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
short_channel_id=bfh('0000000000000002')),
], path)
start_node = b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
route = path_finder.create_route_from_path(path, start_node)
self.assertEqual(b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
route[0].node_id)
self.assertEqual(bfh('0000000000000003'), route[0].short_channel_id)
# need to duplicate tear_down here, as we also need to wait for the sql thread to stop
self.asyncio_loop.call_soon_threadsafe(self._stop_loop.set_result, 1)
self._loop_thread.join(timeout=1)
cdb.sql_thread.join(timeout=1)
def test_find_path_for_payment(self):
class fake_network:
config = self.config
asyncio_loop = asyncio.get_event_loop()
trigger_callback = lambda *args: None
register_callback = lambda *args: None
interface = None
fake_network.channel_db = lnrouter.ChannelDB(fake_network())
fake_network.channel_db.data_loaded.set()
cdb = fake_network.channel_db
path_finder = lnrouter.LNPathFinder(cdb)
self.assertEqual(cdb.num_channels, 0)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'node_id_2': b'\x02cccccccccccccccccccccccccccccccc',
'bitcoin_key_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_2': b'\x02cccccccccccccccccccccccccccccccc',
'short_channel_id': bfh('0000000000000001'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
self.assertEqual(cdb.num_channels, 1)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'node_id_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'bitcoin_key_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'short_channel_id': bfh('0000000000000002'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'node_id_2': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'bitcoin_key_2': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'short_channel_id': bfh('0000000000000003'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02cccccccccccccccccccccccccccccccc',
'node_id_2': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_1': b'\x02cccccccccccccccccccccccccccccccc',
'bitcoin_key_2': b'\x02dddddddddddddddddddddddddddddddd',
'short_channel_id': bfh('0000000000000004'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02dddddddddddddddddddddddddddddddd',
'node_id_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'bitcoin_key_1': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'short_channel_id': bfh('0000000000000005'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
cdb.add_channel_announcement(
{
'node_id_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'node_id_2': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
'bitcoin_key_2': b'\x02dddddddddddddddddddddddddddddddd',
'short_channel_id': bfh('0000000000000006'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': 0,
'features': b''
},
trusted=True)
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000001'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000001'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000002'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': 99,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000002'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000003'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000003'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000004'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000004'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000005'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000005'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 999,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000006'),
'message_flags': b'\x00',
'channel_flags': b'\x00',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 99999999,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
cdb.add_channel_update({
'short_channel_id': bfh('0000000000000006'),
'message_flags': b'\x00',
'channel_flags': b'\x01',
'cltv_expiry_delta': 10,
'htlc_minimum_msat': 250,
'fee_base_msat': 100,
'fee_proportional_millionths': 150,
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'timestamp': 0
})
path = path_finder.find_path_for_payment(
nodeA=b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
nodeB=b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
invoice_amount_msat=100000)
self.assertEqual([
PathEdge(start_node=b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
end_node=b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
short_channel_id=bfh('0000000000000003')),
PathEdge(start_node=b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
end_node=b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
short_channel_id=bfh('0000000000000002')),
], path)
route = path_finder.create_route_from_path(path)
self.assertEqual(b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
route[0].node_id)
self.assertEqual(bfh('0000000000000003'), route[0].short_channel_id)
cdb.stop()
asyncio.run_coroutine_threadsafe(cdb.stopped_event.wait(),
self.asyncio_loop).result()