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dash/test/functional/feature_llmq_chainlocks.py
PastaPastaPasta d40ac79d4d
feat: rpc submitchainlock short circuit if possible and always return… (#5806) 
… best height

## Issue being fixed or feature implemented
Platform wants to know the height of the bestchainlock when they call
submitchainlock; sooo we change the API of submitchainlock to also
return the height

## What was done?
Adjust API and tests

## How Has This Been Tested?
New tests added for this behavior

## Breaking Changes
Not really any; I **guess** that return value could be considered
breaking change; but going from nothing -> something feels unlikely to
break anything although it in theory could.

## Checklist:
_Go over all the following points, and put an `x` in all the boxes that
apply._
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have added or updated relevant unit/integration/functional/e2e
tests
- [ ] I have made corresponding changes to the documentation
- [x] I have assigned this pull request to a milestone _(for repository
code-owners and collaborators only)_

---------

Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
Co-authored-by: Konstantin Akimov <knstqq@gmail.com>
2024-02-01 10:14:59 -06:00

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#!/usr/bin/env python3
# Copyright (c) 2015-2022 The Dash Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
'''
feature_llmq_chainlocks.py
Checks LLMQs based ChainLocks
'''
import time
from test_framework.test_framework import DashTestFramework
from test_framework.util import force_finish_mnsync, assert_equal, assert_raises_rpc_error
class LLMQChainLocksTest(DashTestFramework):
def set_test_params(self):
self.set_dash_test_params(5, 4, fast_dip3_enforcement=True)
def run_test(self):
# Connect all nodes to node1 so that we always have the whole network connected
# Otherwise only masternode connections will be established between nodes, which won't propagate TXs/blocks
# Usually node0 is the one that does this, but in this test we isolate it multiple times
for i in range(len(self.nodes)):
if i != 1:
self.connect_nodes(i, 1)
self.activate_dip8()
self.test_coinbase_best_cl(self.nodes[0], expected_cl_in_cb=False)
self.activate_v20(expected_activation_height=1200)
self.log.info("Activated v20 at height:" + str(self.nodes[0].getblockcount()))
# v20 is active for the next block, not for the tip
self.test_coinbase_best_cl(self.nodes[0], expected_cl_in_cb=False)
# v20 is active, no quorums, no CLs - null CL in CbTx
nocl_block_hash = self.nodes[0].generate(1)[0]
self.test_coinbase_best_cl(self.nodes[0], expected_cl_in_cb=True, expected_null_cl=True)
cbtx = self.nodes[0].getspecialtxes(nocl_block_hash, 5, 1, 0, 2)[0]
assert_equal(cbtx["instantlock"], False)
assert_equal(cbtx["instantlock_internal"], False)
assert_equal(cbtx["chainlock"], False)
self.nodes[0].sporkupdate("SPORK_17_QUORUM_DKG_ENABLED", 0)
self.wait_for_sporks_same()
self.move_to_next_cycle()
self.log.info("Cycle H height:" + str(self.nodes[0].getblockcount()))
self.move_to_next_cycle()
self.log.info("Cycle H+C height:" + str(self.nodes[0].getblockcount()))
self.move_to_next_cycle()
self.log.info("Cycle H+2C height:" + str(self.nodes[0].getblockcount()))
self.mine_cycle_quorum(llmq_type_name="llmq_test_dip0024", llmq_type=103)
self.log.info("Mine single block, wait for chainlock")
self.nodes[0].generate(1)
self.wait_for_chainlocked_block_all_nodes(self.nodes[0].getbestblockhash())
self.test_coinbase_best_cl(self.nodes[0])
# ChainLock locks all the blocks below it so nocl_block_hash should be locked too
cbtx = self.nodes[0].getspecialtxes(nocl_block_hash, 5, 1, 0, 2)[0]
assert_equal(cbtx["instantlock"], True)
assert_equal(cbtx["instantlock_internal"], False)
assert_equal(cbtx["chainlock"], True)
self.log.info("Mine many blocks, wait for chainlock")
self.nodes[0].generate(20)
# We need more time here due to 20 blocks being generated at once
self.wait_for_chainlocked_block_all_nodes(self.nodes[0].getbestblockhash(), timeout=30)
self.test_coinbase_best_cl(self.nodes[0])
self.log.info("Assert that all blocks up until the tip are chainlocked")
for h in range(1, self.nodes[0].getblockcount()):
block = self.nodes[0].getblock(self.nodes[0].getblockhash(h))
assert block['chainlock']
# Update spork to SPORK_19_CHAINLOCKS_ENABLED and test its behaviour
self.nodes[0].sporkupdate("SPORK_19_CHAINLOCKS_ENABLED", 1)
self.wait_for_sporks_same()
# Generate new blocks and verify that they are not chainlocked
previous_block_hash = self.nodes[0].getbestblockhash()
for _ in range(2):
block_hash = self.nodes[0].generate(1)[0]
self.wait_for_chainlocked_block_all_nodes(block_hash, expected=False)
assert self.nodes[0].getblock(previous_block_hash)["chainlock"]
self.nodes[0].sporkupdate("SPORK_19_CHAINLOCKS_ENABLED", 0)
self.wait_for_sporks_same()
self.log.info("Isolate node, mine on another, and reconnect")
self.isolate_node(0)
node0_mining_addr = self.nodes[0].getnewaddress()
node0_tip = self.nodes[0].getbestblockhash()
self.nodes[1].generatetoaddress(5, node0_mining_addr)
self.wait_for_chainlocked_block(self.nodes[1], self.nodes[1].getbestblockhash())
self.test_coinbase_best_cl(self.nodes[0])
assert self.nodes[0].getbestblockhash() == node0_tip
self.reconnect_isolated_node(0, 1)
self.nodes[1].generatetoaddress(1, node0_mining_addr)
self.wait_for_chainlocked_block_all_nodes(self.nodes[1].getbestblockhash())
self.test_coinbase_best_cl(self.nodes[0])
self.log.info("Isolate node, mine on another, reconnect and submit CL via RPC")
self.isolate_node(0)
self.nodes[1].generate(1)
self.wait_for_chainlocked_block(self.nodes[1], self.nodes[1].getbestblockhash())
best_0 = self.nodes[0].getbestchainlock()
best_1 = self.nodes[1].getbestchainlock()
assert best_0['blockhash'] != best_1['blockhash']
assert best_0['height'] != best_1['height']
assert best_0['signature'] != best_1['signature']
assert_equal(best_0['known_block'], True)
node_height = self.nodes[1].submitchainlock(best_0['blockhash'], best_0['signature'], best_0['height'])
rpc_height = self.nodes[0].submitchainlock(best_1['blockhash'], best_1['signature'], best_1['height'])
assert_equal(best_1['height'], node_height)
assert_equal(best_1['height'], rpc_height)
best_0 = self.nodes[0].getbestchainlock()
assert_equal(best_0['blockhash'], best_1['blockhash'])
assert_equal(best_0['height'], best_1['height'])
assert_equal(best_0['signature'], best_1['signature'])
assert_equal(best_0['known_block'], False)
self.reconnect_isolated_node(0, 1)
self.sync_all()
self.log.info("Isolate node, mine on both parts of the network, and reconnect")
self.isolate_node(0)
bad_tip = self.nodes[0].generate(5)[-1]
self.nodes[1].generatetoaddress(1, node0_mining_addr)
good_tip = self.nodes[1].getbestblockhash()
self.wait_for_chainlocked_block(self.nodes[1], good_tip)
assert not self.nodes[0].getblock(self.nodes[0].getbestblockhash())["chainlock"]
self.reconnect_isolated_node(0, 1)
self.nodes[1].generatetoaddress(1, node0_mining_addr)
self.wait_for_chainlocked_block_all_nodes(self.nodes[1].getbestblockhash())
self.test_coinbase_best_cl(self.nodes[0])
assert self.nodes[0].getblock(self.nodes[0].getbestblockhash())["previousblockhash"] == good_tip
assert self.nodes[1].getblock(self.nodes[1].getbestblockhash())["previousblockhash"] == good_tip
self.log.info("The tip mined while this node was isolated should be marked conflicting now")
found = False
for tip in self.nodes[0].getchaintips(2):
if tip["hash"] == bad_tip:
assert tip["status"] == "conflicting"
found = True
break
assert found
self.log.info("Keep node connected and let it try to reorg the chain")
good_tip = self.nodes[0].getbestblockhash()
self.log.info("Restart it so that it forgets all the chainlock messages from the past")
self.restart_node(0)
self.connect_nodes(0, 1)
assert self.nodes[0].getbestblockhash() == good_tip
self.nodes[0].invalidateblock(good_tip)
self.log.info("Now try to reorg the chain")
self.nodes[0].generate(2)
time.sleep(6)
assert self.nodes[1].getbestblockhash() == good_tip
bad_tip = self.nodes[0].generate(2)[-1]
time.sleep(6)
assert self.nodes[0].getbestblockhash() == bad_tip
assert self.nodes[1].getbestblockhash() == good_tip
self.log.info("Now let the node which is on the wrong chain reorg back to the locked chain")
self.nodes[0].reconsiderblock(good_tip)
assert self.nodes[0].getbestblockhash() != good_tip
good_fork = good_tip
good_tip = self.nodes[1].generatetoaddress(1, node0_mining_addr)[-1] # this should mark bad_tip as conflicting
self.wait_for_chainlocked_block_all_nodes(good_tip)
self.test_coinbase_best_cl(self.nodes[0])
assert self.nodes[0].getbestblockhash() == good_tip
found = False
for tip in self.nodes[0].getchaintips(2):
if tip["hash"] == bad_tip:
assert tip["status"] == "conflicting"
found = True
break
assert found
self.log.info("Should switch to the best non-conflicting tip (not to the most work chain) on restart")
assert int(self.nodes[0].getblock(bad_tip)["chainwork"], 16) > int(self.nodes[1].getblock(good_tip)["chainwork"], 16)
self.restart_node(0)
self.nodes[0].invalidateblock(good_fork)
self.restart_node(0)
time.sleep(1)
assert self.nodes[0].getbestblockhash() == good_tip
self.log.info("Isolate a node and let it create some transactions which won't get IS locked")
force_finish_mnsync(self.nodes[0])
self.isolate_node(0)
txs = []
for _ in range(3):
txs.append(self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1))
txs += self.create_chained_txs(self.nodes[0], 1)
self.log.info("Assert that after block generation these TXs are NOT included (as they are \"unsafe\")")
node0_tip = self.nodes[0].generate(1)[-1]
for txid in txs:
tx = self.nodes[0].getrawtransaction(txid, 1)
assert "confirmations" not in tx
time.sleep(1)
node0_tip_block = self.nodes[0].getblock(node0_tip)
assert not node0_tip_block["chainlock"]
assert node0_tip_block["previousblockhash"] == good_tip
self.log.info("Disable LLMQ based InstantSend for a very short time (this never gets propagated to other nodes)")
self.nodes[0].sporkupdate("SPORK_2_INSTANTSEND_ENABLED", 4070908800)
self.log.info("Now the TXs should be included")
self.nodes[0].generate(1)
self.nodes[0].sporkupdate("SPORK_2_INSTANTSEND_ENABLED", 0)
self.log.info("Assert that TXs got included now")
for txid in txs:
tx = self.nodes[0].getrawtransaction(txid, 1)
assert "confirmations" in tx and tx["confirmations"] > 0
# Enable network on first node again, which will cause the blocks to propagate and IS locks to happen retroactively
# for the mined TXs, which will then allow the network to create a CLSIG
self.log.info("Re-enable network on first node and wait for chainlock")
self.reconnect_isolated_node(0, 1)
self.wait_for_chainlocked_block(self.nodes[0], self.nodes[0].getbestblockhash(), timeout=30)
for i in range(2):
self.log.info(f"{'Disable' if i == 0 else 'Enable'} Chainlock")
self.nodes[0].sporkupdate("SPORK_19_CHAINLOCKS_ENABLED", 4070908800 if i == 0 else 0)
self.wait_for_sporks_same()
self.log.info("Add a new node and let it sync")
self.dynamically_add_masternode(evo=False)
added_idx = len(self.nodes) - 1
assert_raises_rpc_error(-32603, "Unable to find any chainlock", self.nodes[added_idx].getbestchainlock)
self.log.info("Test that new node can mine without Chainlock info")
tip_0 = self.nodes[0].getblock(self.nodes[0].getbestblockhash(), 2)
self.nodes[added_idx].generate(1)
self.sync_blocks(self.nodes)
tip_1 = self.nodes[0].getblock(self.nodes[0].getbestblockhash(), 2)
assert_equal(tip_1['cbTx']['bestCLSignature'], tip_0['cbTx']['bestCLSignature'])
assert_equal(tip_1['cbTx']['bestCLHeightDiff'], tip_0['cbTx']['bestCLHeightDiff'] + 1)
def create_chained_txs(self, node, amount):
txid = node.sendtoaddress(node.getnewaddress(), amount)
tx = node.getrawtransaction(txid, 1)
inputs = []
valueIn = 0
for txout in tx["vout"]:
inputs.append({"txid": txid, "vout": txout["n"]})
valueIn += txout["value"]
outputs = {
node.getnewaddress(): round(float(valueIn) - 0.0001, 6)
}
rawtx = node.createrawtransaction(inputs, outputs)
rawtx = node.signrawtransactionwithwallet(rawtx)
rawtxid = node.sendrawtransaction(rawtx["hex"])
return [txid, rawtxid]
def test_coinbase_best_cl(self, node, expected_cl_in_cb=True, expected_null_cl=False):
block_hash = node.getbestblockhash()
block = node.getblock(block_hash, 2)
cbtx = block["cbTx"]
assert_equal(int(cbtx["version"]) > 2, expected_cl_in_cb)
if expected_cl_in_cb:
cb_height = int(cbtx["height"])
best_cl_height_diff = int(cbtx["bestCLHeightDiff"])
best_cl_signature = cbtx["bestCLSignature"]
assert_equal(expected_null_cl, int(best_cl_signature, 16) == 0)
if expected_null_cl:
# Null bestCLSignature is allowed.
# bestCLHeightDiff must be 0 if bestCLSignature is null
assert_equal(best_cl_height_diff, 0)
# Returning as no more tests can be conducted
return
best_cl_height = cb_height - best_cl_height_diff - 1
target_block_hash = node.getblockhash(best_cl_height)
# Verify CL signature
assert node.verifychainlock(target_block_hash, best_cl_signature, best_cl_height)
else:
assert "bestCLHeightDiff" not in cbtx and "bestCLSignature" not in cbtx
if __name__ == '__main__':
LLMQChainLocksTest().main()
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