From 91d93aac4e3fe6fff5ef492ed152c4d8fa6f2672 Mon Sep 17 00:00:00 2001 From: James O'Beirne Date: Fri, 23 Apr 2021 13:29:53 -0400 Subject: [PATCH] validation: remove nchaintx from assumeutxo metadata This value is no longer used and is instead specified statically in chainparams. This change means that previously generated snapshots will no longer be usable. --- src/node/utxo_snapshot.h | 11 ++--------- src/test/validation_chainstatemanager_tests.cpp | 14 +------------- test/functional/rpc_dumptxoutset.py | 2 +- 3 files changed, 4 insertions(+), 23 deletions(-) diff --git a/src/node/utxo_snapshot.h b/src/node/utxo_snapshot.h index 4767d49889a..61292cdcc52 100644 --- a/src/node/utxo_snapshot.h +++ b/src/node/utxo_snapshot.h @@ -22,22 +22,15 @@ public: //! during snapshot load to estimate progress of UTXO set reconstruction. uint64_t m_coins_count = 0; - //! Necessary to "fake" the base nChainTx so that we can estimate progress during - //! initial block download for the assumeutxo chainstate. - //! - //! TODO: this is unused and should be removed. - unsigned int m_nchaintx = 0; - SnapshotMetadata() { } SnapshotMetadata( const uint256& base_blockhash, uint64_t coins_count, unsigned int nchaintx) : m_base_blockhash(base_blockhash), - m_coins_count(coins_count), - m_nchaintx(nchaintx) { } + m_coins_count(coins_count) { } - SERIALIZE_METHODS(SnapshotMetadata, obj) { READWRITE(obj.m_base_blockhash, obj.m_coins_count, obj.m_nchaintx); } + SERIALIZE_METHODS(SnapshotMetadata, obj) { READWRITE(obj.m_base_blockhash, obj.m_coins_count); } }; #endif // BITCOIN_NODE_UTXO_SNAPSHOT_H diff --git a/src/test/validation_chainstatemanager_tests.cpp b/src/test/validation_chainstatemanager_tests.cpp index 15fc9b7cbd5..82e70b5cdcd 100644 --- a/src/test/validation_chainstatemanager_tests.cpp +++ b/src/test/validation_chainstatemanager_tests.cpp @@ -266,16 +266,7 @@ BOOST_FIXTURE_TEST_CASE(chainstatemanager_activate_snapshot, TestChain100Setup) metadata.m_base_blockhash = uint256::ONE; })); - constexpr int bad_nchaintx = 9999; - - BOOST_REQUIRE(CreateAndActivateUTXOSnapshot( - m_node, m_path_root, [](CAutoFile& auto_infile, SnapshotMetadata& metadata) { - // Provide an nChainTx that differs from the hardcoded one. - // - // Ultimately this malleation check should be removed when we remove - // the now-unnecessary nChainTx from the user-specified snapshot metadata. - metadata.m_nchaintx = bad_nchaintx; - })); + BOOST_REQUIRE(CreateAndActivateUTXOSnapshot(m_node, m_path_root)); // Ensure our active chain is the snapshot chainstate. BOOST_CHECK(!chainman.ActiveChainstate().m_from_snapshot_blockhash.IsNull()); @@ -286,10 +277,7 @@ BOOST_FIXTURE_TEST_CASE(chainstatemanager_activate_snapshot, TestChain100Setup) const AssumeutxoData& au_data = *ExpectedAssumeutxo(snapshot_height, ::Params()); const CBlockIndex* tip = chainman.ActiveTip(); - // Ensure that, despite a bad nChainTx value being in the snapshot, activation - // uses the hardcoded value from chainparams. BOOST_CHECK_EQUAL(tip->nChainTx, au_data.nChainTx); - BOOST_CHECK(tip->nChainTx != bad_nchaintx); // To be checked against later when we try loading a subsequent snapshot. uint256 loaded_snapshot_blockhash{*chainman.SnapshotBlockhash()}; diff --git a/test/functional/rpc_dumptxoutset.py b/test/functional/rpc_dumptxoutset.py index e65787ce087..dc469ba5521 100755 --- a/test/functional/rpc_dumptxoutset.py +++ b/test/functional/rpc_dumptxoutset.py @@ -41,7 +41,7 @@ class DumptxoutsetTest(BitcoinTestFramework): digest = hashlib.sha256(f.read()).hexdigest() # UTXO snapshot hash should be deterministic based on mocked time. assert_equal( - digest, 'be032e5f248264ba08e11099ac09dbd001f6f87ffc68bf0f87043d8146d50664') + digest, '7ae82c986fa5445678d2a21453bb1c86d39e47af13da137640c2b1cf8093691c') # Specifying a path to an existing file will fail. assert_raises_rpc_error(