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test: add testcases for snapshot initialization

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This commit is contained in:
James O'Beirne 2022-02-07 19:56:31 -05:00
parent cced4e7336
commit e4d7995286
1 changed files with 112 additions and 2 deletions
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114
src/test/validation_chainstatemanager_tests.cpp
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@ -10,6 +10,7 @@
#include <sync.h>
#include <test/util/chainstate.h>
#include <test/util/setup_common.h>
#include <timedata.h>
#include <uint256.h>
#include <validation.h>
#include <validationinterface.h>
@ -155,12 +156,32 @@ BOOST_AUTO_TEST_CASE(chainstatemanager_rebalance_caches)
}
struct SnapshotTestSetup : TestChain100Setup {
// Run with coinsdb on the filesystem to support, e.g., moving invalidated
// chainstate dirs to "*_invalid".
//
// Note that this means the tests run considerably slower than in-memory DB
// tests, but we can't otherwise test this functionality since it relies on
// destructive filesystem operations.
SnapshotTestSetup() : TestChain100Setup{
{},
{},
/*coins_db_in_memory=*/false,
/*block_tree_db_in_memory=*/false,
}
{
}
std::tuple<Chainstate*, Chainstate*> SetupSnapshot()
{
ChainstateManager& chainman = *Assert(m_node.chainman);
BOOST_CHECK(!chainman.IsSnapshotActive());
WITH_LOCK(::cs_main, BOOST_CHECK(!chainman.IsSnapshotValidated()));
{
LOCK(::cs_main);
BOOST_CHECK(!chainman.IsSnapshotValidated());
BOOST_CHECK(!node::FindSnapshotChainstateDir());
}
size_t initial_size;
size_t initial_total_coins{100};
@ -208,6 +229,9 @@ struct SnapshotTestSetup : TestChain100Setup {
auto_infile >> outpoint;
auto_infile >> coin;
}));
BOOST_CHECK(!node::FindSnapshotChainstateDir());
BOOST_REQUIRE(!CreateAndActivateUTXOSnapshot(
this, [](AutoFile& auto_infile, SnapshotMetadata& metadata) {
// Coins count is larger than coins in file
@ -230,6 +254,7 @@ struct SnapshotTestSetup : TestChain100Setup {
}));
BOOST_REQUIRE(CreateAndActivateUTXOSnapshot(this));
BOOST_CHECK(fs::exists(*node::FindSnapshotChainstateDir()));
// Ensure our active chain is the snapshot chainstate.
BOOST_CHECK(!chainman.ActiveChainstate().m_from_snapshot_blockhash->IsNull());
@ -242,9 +267,11 @@ struct SnapshotTestSetup : TestChain100Setup {
{
LOCK(::cs_main);
fs::path found = *node::FindSnapshotChainstateDir();
// Note: WriteSnapshotBaseBlockhash() is implicitly tested above.
BOOST_CHECK_EQUAL(
*node::ReadSnapshotBaseBlockhash(m_args.GetDataDirNet() / "chainstate_snapshot"),
*node::ReadSnapshotBaseBlockhash(found),
*chainman.SnapshotBlockhash());
// Ensure that the genesis block was not marked assumed-valid.
@ -328,6 +355,34 @@ struct SnapshotTestSetup : TestChain100Setup {
loaded_snapshot_blockhash);
return std::make_tuple(&validation_chainstate, &snapshot_chainstate);
}
// Simulate a restart of the node by flushing all state to disk, clearing the
// existing ChainstateManager, and unloading the block index.
//
// @returns a reference to the "restarted" ChainstateManager
ChainstateManager& SimulateNodeRestart()
{
ChainstateManager& chainman = *Assert(m_node.chainman);
BOOST_TEST_MESSAGE("Simulating node restart");
{
LOCK(::cs_main);
for (Chainstate* cs : chainman.GetAll()) {
cs->ForceFlushStateToDisk();
}
chainman.ResetChainstates();
BOOST_CHECK_EQUAL(chainman.GetAll().size(), 0);
const ChainstateManager::Options chainman_opts{
.chainparams = ::Params(),
.adjusted_time_callback = GetAdjustedTime,
};
// For robustness, ensure the old manager is destroyed before creating a
// new one.
m_node.chainman.reset();
m_node.chainman.reset(new ChainstateManager(chainman_opts));
}
return *Assert(m_node.chainman);
}
};
//! Test basic snapshot activation.
@ -414,4 +469,59 @@ BOOST_FIXTURE_TEST_CASE(chainstatemanager_loadblockindex, TestChain100Setup)
BOOST_CHECK_EQUAL(cs2.setBlockIndexCandidates.size(), num_indexes);
}
//! Ensure that snapshot chainstates initialize properly when found on disk.
BOOST_FIXTURE_TEST_CASE(chainstatemanager_snapshot_init, SnapshotTestSetup)
{
this->SetupSnapshot();
ChainstateManager& chainman = *Assert(m_node.chainman);
fs::path snapshot_chainstate_dir = *node::FindSnapshotChainstateDir();
BOOST_CHECK(fs::exists(snapshot_chainstate_dir));
BOOST_CHECK_EQUAL(snapshot_chainstate_dir, gArgs.GetDataDirNet() / "chainstate_snapshot");
BOOST_CHECK(chainman.IsSnapshotActive());
const uint256 snapshot_tip_hash = WITH_LOCK(chainman.GetMutex(),
return chainman.ActiveTip()->GetBlockHash());
auto all_chainstates = chainman.GetAll();
BOOST_CHECK_EQUAL(all_chainstates.size(), 2);
// Test that simulating a shutdown (resetting ChainstateManager) and then performing
// chainstate reinitializing successfully cleans up the background-validation
// chainstate data, and we end up with a single chainstate that is at tip.
ChainstateManager& chainman_restarted = this->SimulateNodeRestart();
BOOST_TEST_MESSAGE("Performing Load/Verify/Activate of chainstate");
// This call reinitializes the chainstates.
this->LoadVerifyActivateChainstate();
{
LOCK(chainman_restarted.GetMutex());
BOOST_CHECK_EQUAL(chainman_restarted.GetAll().size(), 2);
BOOST_CHECK(chainman_restarted.IsSnapshotActive());
BOOST_CHECK(!chainman_restarted.IsSnapshotValidated());
BOOST_CHECK_EQUAL(chainman_restarted.ActiveTip()->GetBlockHash(), snapshot_tip_hash);
BOOST_CHECK_EQUAL(chainman_restarted.ActiveHeight(), 210);
}
BOOST_TEST_MESSAGE(
"Ensure we can mine blocks on top of the initialized snapshot chainstate");
mineBlocks(10);
{
LOCK(chainman_restarted.GetMutex());
BOOST_CHECK_EQUAL(chainman_restarted.ActiveHeight(), 220);
// Background chainstate should be unaware of new blocks on the snapshot
// chainstate.
for (Chainstate* cs : chainman_restarted.GetAll()) {
if (cs != &chainman_restarted.ActiveChainstate()) {
BOOST_CHECK_EQUAL(cs->m_chain.Height(), 110);
}
}
}
}
BOOST_AUTO_TEST_SUITE_END()