dash/qa/rpc-tests/autois-mempool.py
Alexander Block c3602372cc Implement retroactive IS locking of transactions first seen in blocks instead of mempool (#2770)
* Don't rely on UTXO set in CheckCanLock

The UTXO set only works for TXs in the mempool and won't work when we try
to retroactively lock unlocked TXs from blocks.

This is safe as ProcessTx is only called when a TX was accepted into the
mempool or connected in a block, which means that all input checks were
good.

* Rename RetryLockMempoolTxs to RetryLockTxs and let it retry connected TXs

* Instead of manually calling ProcessTx, let SyncTransaction handle all cases

SyncTransaction is called from AcceptToMemoryPool and when transactions got
connected in a block. So this is the time we want to run TXs through
ProcessTx. This also enables retroactive signing of TXs that were unknown
before a new block appeared.

* Test retroactive signing and safe TXs in LLMQ ChainLocks tests

* Also test for retroactive signing of chained TXs

* Honor lockedParentTx when looking for TXs to retry signing

* Stop scanning for TXs to retry after a depth of 6

* Generate 6 block to avoid retroactive signing overloading Travis

* Avoid retroactive signing

* Don't rely on NewPoWValidBlock and use SyncTransaction to build blockTxs

NewPoWValidBlock is not guaranteed to be called when blocks come in fast.
When a block is accepted in AcceptBlock, NewPoWValidBlock is only called
when the new block is a successor of the currently active tip. This is not
the case when after the first block a second block is accepted immediately
as the first block is not connected yet.

This might be a bug actually in the handling of NewPoWValidBlock, so we
might need to check/fix this later, but currently I prefer to not touch
that part.

Instead, we now use SyncTransaction to gather TXs for blockTxs. This works
because SyncTransaction is called for all transactions in a freshly
connected block in one go. The call also happens before UpdatedBlockTip is
called, so it's fine with the existing logic.

* Use tx.IsCoinBase() instead of checking index 0

Also check for empty vin.
2019-03-19 13:55:51 +03:00

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Python
Executable File

#!/usr/bin/env python3
# Copyright (c) 2018 The Dash Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
from test_framework.mininode import *
from test_framework.test_framework import DashTestFramework
from test_framework.util import *
from time import *
'''
autois-mempool.py
Checks if automatic InstantSend locks stop working when transaction mempool
is full (more than 0.1 part from max value).
'''
MAX_MEMPOOL_SIZE = 1 # max node mempool in MBs
MB_SIZE = 1000000 # C++ code use this coefficient to calc MB in mempool
AUTO_IX_MEM_THRESHOLD = 0.1
class AutoISMempoolTest(DashTestFramework):
def __init__(self):
super().__init__(8, 5, ["-maxmempool=%d" % MAX_MEMPOOL_SIZE, '-limitdescendantsize=10'], fast_dip3_enforcement=True)
# set sender, receiver
self.receiver_idx = 1
self.sender_idx = 2
def get_mempool_usage(self, node):
info = node.getmempoolinfo()
return info['usage']
def fill_mempool(self):
# send lots of txes to yourself just to fill the mempool
counter = 0
sync_period = 10
dummy_address = self.nodes[0].getnewaddress()
while self.get_mempool_usage(self.nodes[self.sender_idx]) < MAX_MEMPOOL_SIZE * MB_SIZE * AUTO_IX_MEM_THRESHOLD:
self.nodes[0].sendtoaddress(dummy_address, 1.0)
counter += 1
if counter % sync_period == 0:
# sync nodes
self.sync_all()
self.sync_all()
def run_test(self):
# make sure masternodes are synced
sync_masternodes(self.nodes)
self.nodes[0].spork("SPORK_17_QUORUM_DKG_ENABLED", 0)
self.wait_for_sporks_same()
self.mine_quorum()
self.log.info("Test old InstantSend")
self.test_auto();
# Generate 6 block to avoid retroactive signing overloading Travis
self.nodes[0].generate(6)
sync_blocks(self.nodes)
self.nodes[0].spork("SPORK_20_INSTANTSEND_LLMQ_BASED", 0)
self.wait_for_sporks_same()
self.log.info("Test new InstantSend")
self.test_auto(True);
def test_auto(self, new_is = False):
self.activate_autois_bip9(self.nodes[0])
self.set_autois_spork_state(self.nodes[0], True)
# check pre-conditions for autoIS
assert(self.get_autois_bip9_status(self.nodes[0]) == 'active')
assert(self.get_autois_spork_state(self.nodes[0]))
# create 3 inputs for txes on sender node and give them enough confirmations
sender = self.nodes[self.sender_idx]
receiver = self.nodes[self.receiver_idx]
sender_address = sender.getnewaddress()
for i in range(0, 4):
self.nodes[0].sendtoaddress(sender_address, 2.0)
for i in range(0, 2):
set_mocktime(get_mocktime() + 1)
set_node_times(self.nodes, get_mocktime())
self.nodes[0].generate(1)
self.sync_all()
# autoIS is working
assert(self.send_simple_tx(sender, receiver))
# fill mempool with transactions
self.set_autois_spork_state(self.nodes[0], False)
self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 4070908800)
self.wait_for_sporks_same()
self.fill_mempool()
self.set_autois_spork_state(self.nodes[0], True)
self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 0)
self.wait_for_sporks_same()
# autoIS is not working now
assert(not self.send_simple_tx(sender, receiver))
# regular IS is still working for old IS but not for new one
assert(not self.send_regular_instantsend(sender, receiver, False) if new_is else self.send_regular_instantsend(sender, receiver))
# generate one block to clean up mempool and retry auto and regular IS
# generate 5 more blocks to avoid retroactive signing (which would overload Travis)
set_mocktime(get_mocktime() + 1)
set_node_times(self.nodes, get_mocktime())
self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 4070908800)
self.wait_for_sporks_same()
self.nodes[0].generate(6)
self.sync_all()
set_mocktime(get_mocktime() + 1)
set_node_times(self.nodes, get_mocktime())
self.nodes[0].spork("SPORK_2_INSTANTSEND_ENABLED", 0)
self.wait_for_sporks_same()
assert(self.send_simple_tx(sender, receiver))
assert(self.send_regular_instantsend(sender, receiver, not new_is))
if __name__ == '__main__':
AutoISMempoolTest().main()