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feature_index_prune.py
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#!/usr/bin/env python3
# Copyright (c) 2020-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test indices in conjunction with prune."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_greater_than,
assert_raises_rpc_error,
)
class FeatureIndexPruneTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 4
self.extra_args = [
["-fastprune", "-prune=1", "-blockfilterindex=1"],
["-fastprune", "-prune=1", "-coinstatsindex=1"],
["-fastprune", "-prune=1", "-blockfilterindex=1", "-coinstatsindex=1"],
[]
]
def sync_index(self, height):
expected_filter = {
'basic block filter index': {'synced': True, 'best_block_height': height},
}
self.wait_until(lambda: self.nodes[0].getindexinfo() == expected_filter)
expected_stats = {
'coinstatsindex': {'synced': True, 'best_block_height': height}
}
self.wait_until(lambda: self.nodes[1].getindexinfo() == expected_stats)
expected = {**expected_filter, **expected_stats}
self.wait_until(lambda: self.nodes[2].getindexinfo() == expected)
def reconnect_nodes(self):
self.connect_nodes(0,1)
self.connect_nodes(0,2)
self.connect_nodes(0,3)
def mine_batches(self, blocks):
n = blocks // 250
for _ in range(n):
self.generate(self.nodes[0], 250)
self.generate(self.nodes[0], blocks % 250)
self.sync_blocks()
def restart_without_indices(self):
for i in range(3):
self.restart_node(i, extra_args=["-fastprune", "-prune=1"])
self.reconnect_nodes()
def run_test(self):
filter_nodes = [self.nodes[0], self.nodes[2]]
stats_nodes = [self.nodes[1], self.nodes[2]]
self.log.info("check if we can access blockfilters and coinstats when pruning is enabled but no blocks are actually pruned")
self.sync_index(height=200)
tip = self.nodes[0].getbestblockhash()
for node in filter_nodes:
assert_greater_than(len(node.getblockfilter(tip)['filter']), 0)
for node in stats_nodes:
assert(node.gettxoutsetinfo(hash_type="muhash", hash_or_height=tip)['muhash'])
self.mine_batches(500)
self.sync_index(height=700)
self.log.info("prune some blocks")
for node in self.nodes[:2]:
with node.assert_debug_log(['limited pruning to height 689']):
pruneheight_new = node.pruneblockchain(400)
# the prune heights used here and below are magic numbers that are determined by the
# thresholds at which block files wrap, so they depend on disk serialization and default block file size.
assert_equal(pruneheight_new, 248)
self.log.info("check if we can access the tips blockfilter and coinstats when we have pruned some blocks")
tip = self.nodes[0].getbestblockhash()
for node in filter_nodes:
assert_greater_than(len(node.getblockfilter(tip)['filter']), 0)
for node in stats_nodes:
assert(node.gettxoutsetinfo(hash_type="muhash", hash_or_height=tip)['muhash'])
self.log.info("check if we can access the blockfilter and coinstats of a pruned block")
height_hash = self.nodes[0].getblockhash(2)
for node in filter_nodes:
assert_greater_than(len(node.getblockfilter(height_hash)['filter']), 0)
for node in stats_nodes:
assert(node.gettxoutsetinfo(hash_type="muhash", hash_or_height=height_hash)['muhash'])
# mine and sync index up to a height that will later be the pruneheight
self.generate(self.nodes[0], 51)
self.sync_index(height=751)
self.restart_without_indices()
self.log.info("make sure trying to access the indices throws errors")
for node in filter_nodes:
msg = "Index is not enabled for filtertype basic"
assert_raises_rpc_error(-1, msg, node.getblockfilter, height_hash)
for node in stats_nodes:
msg = "Querying specific block heights requires coinstatsindex"
assert_raises_rpc_error(-8, msg, node.gettxoutsetinfo, "muhash", height_hash)
self.mine_batches(749)
self.log.info("prune exactly up to the indices best blocks while the indices are disabled")
for i in range(3):
pruneheight_2 = self.nodes[i].pruneblockchain(1000)
assert_equal(pruneheight_2, 750)
# Restart the nodes again with the indices activated
self.restart_node(i, extra_args=self.extra_args[i])
self.log.info("make sure that we can continue with the partially synced indices after having pruned up to the index height")
self.sync_index(height=1500)
self.log.info("prune further than the indices best blocks while the indices are disabled")
self.restart_without_indices()
self.mine_batches(1000)
for i in range(3):
pruneheight_3 = self.nodes[i].pruneblockchain(2000)
assert_greater_than(pruneheight_3, pruneheight_2)
self.stop_node(i)
self.log.info("make sure we get an init error when starting the nodes again with the indices")
filter_msg = "Error: basic block filter index best block of the index goes beyond pruned data. Please disable the index or reindex (which will download the whole blockchain again)"
stats_msg = "Error: coinstatsindex best block of the index goes beyond pruned data. Please disable the index or reindex (which will download the whole blockchain again)"
for i, msg in enumerate([filter_msg, stats_msg, filter_msg]):
self.nodes[i].assert_start_raises_init_error(extra_args=self.extra_args[i], expected_msg=msg)
self.log.info("make sure the nodes start again with the indices and an additional -reindex arg")
for i in range(3):
restart_args = self.extra_args[i]+["-reindex"]
self.restart_node(i, extra_args=restart_args)
# The nodes need to be reconnected to the non-pruning node upon restart, otherwise they will be stuck
self.connect_nodes(i, 3)
self.sync_blocks(timeout=300)
for node in self.nodes[:2]:
with node.assert_debug_log(['limited pruning to height 2489']):
pruneheight_new = node.pruneblockchain(2500)
assert_equal(pruneheight_new, 2005)
self.log.info("ensure that prune locks don't prevent indices from failing in a reorg scenario")
with self.nodes[0].assert_debug_log(['basic block filter index prune lock moved back to 2480']):
self.nodes[3].invalidateblock(self.nodes[0].getblockhash(2480))
self.generate(self.nodes[3], 30)
self.sync_blocks()
if __name__ == '__main__':
FeatureIndexPruneTest().main()