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88 lines
3.5 KiB
88 lines
3.5 KiB
#!/usr/bin/env python3
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# Copyright (c) 2014-2021 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test running bitcoind with -reindex and -reindex-chainstate options.
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- Start a single node and generate 3 blocks.
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- Stop the node and restart it with -reindex. Verify that the node has reindexed up to block 3.
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- Stop the node and restart it with -reindex-chainstate. Verify that the node has reindexed up to block 3.
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- Verify that out-of-order blocks are correctly processed, see LoadExternalBlockFile()
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"""
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import os
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.p2p import MAGIC_BYTES
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from test_framework.util import assert_equal
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class ReindexTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 1
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def reindex(self, justchainstate=False):
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self.generatetoaddress(self.nodes[0], 3, self.nodes[0].get_deterministic_priv_key().address)
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blockcount = self.nodes[0].getblockcount()
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self.stop_nodes()
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extra_args = [["-reindex-chainstate" if justchainstate else "-reindex"]]
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self.start_nodes(extra_args)
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assert_equal(self.nodes[0].getblockcount(), blockcount) # start_node is blocking on reindex
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self.log.info("Success")
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# Check that blocks can be processed out of order
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def out_of_order(self):
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# The previous test created 12 blocks
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assert_equal(self.nodes[0].getblockcount(), 12)
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self.stop_nodes()
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# In this test environment, blocks will always be in order (since
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# we're generating them rather than getting them from peers), so to
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# test out-of-order handling, swap blocks 1 and 2 on disk.
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blk0 = os.path.join(self.nodes[0].datadir, self.nodes[0].chain, 'blocks', 'blk00000.dat')
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with open(blk0, 'r+b') as bf:
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# Read at least the first few blocks (including genesis)
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b = bf.read(2000)
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# Find the offsets of blocks 2, 3, and 4 (the first 3 blocks beyond genesis)
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# by searching for the regtest marker bytes (see pchMessageStart).
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def find_block(b, start):
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return b.find(MAGIC_BYTES["regtest"], start)+4
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genesis_start = find_block(b, 0)
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assert_equal(genesis_start, 4)
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b2_start = find_block(b, genesis_start)
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b3_start = find_block(b, b2_start)
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b4_start = find_block(b, b3_start)
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# Blocks 2 and 3 should be the same size.
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assert_equal(b3_start-b2_start, b4_start-b3_start)
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# Swap the second and third blocks (don't disturb the genesis block).
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bf.seek(b2_start)
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bf.write(b[b3_start:b4_start])
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bf.write(b[b2_start:b3_start])
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# The reindexing code should detect and accommodate out of order blocks.
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with self.nodes[0].assert_debug_log([
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'LoadExternalBlockFile: Out of order block',
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'LoadExternalBlockFile: Processing out of order child',
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]):
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extra_args = [["-reindex"]]
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self.start_nodes(extra_args)
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# All blocks should be accepted and processed.
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assert_equal(self.nodes[0].getblockcount(), 12)
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def run_test(self):
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self.reindex(False)
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self.reindex(True)
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self.reindex(False)
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self.reindex(True)
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self.out_of_order()
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if __name__ == '__main__':
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ReindexTest().main()
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