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f68cba29b3
This is a just a mechanical change, renaming and inverting the meaning of the indexing variable. "m_blockfiles_indexed" is a more straightforward name for this variable because this variable just indicates whether or not <datadir>/blocks/blk?????.dat files have been indexed in the <datadir>/blocks/index LevelDB database. The name "m_reindexing" was more confusing, it could be true even if -reindex was not specified, and false when it was specified. Also, the previous name unnecessarily required thinking about the whole reindexing process just to understand simple checks in validation code about whether blocks were indexed. The motivation for this change is to follow up on previous commits, moving away from having multiple variables called "reindex" internally, and instead naming variables individually after what they do and represent.
293 lines
11 KiB
C++
293 lines
11 KiB
C++
// Copyright (c) 2022 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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//
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// The bitcoin-chainstate executable serves to surface the dependencies required
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// by a program wishing to use Bitcoin Core's consensus engine as it is right
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// now.
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//
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// DEVELOPER NOTE: Since this is a "demo-only", experimental, etc. executable,
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// it may diverge from Bitcoin Core's coding style.
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//
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// It is part of the libbitcoinkernel project.
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#include <kernel/chainparams.h>
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#include <kernel/chainstatemanager_opts.h>
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#include <kernel/checks.h>
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#include <kernel/context.h>
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#include <kernel/validation_cache_sizes.h>
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#include <consensus/validation.h>
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#include <core_io.h>
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#include <node/blockstorage.h>
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#include <node/caches.h>
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#include <node/chainstate.h>
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#include <random.h>
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#include <script/sigcache.h>
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#include <util/chaintype.h>
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#include <util/fs.h>
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#include <util/signalinterrupt.h>
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#include <util/task_runner.h>
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#include <validation.h>
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#include <validationinterface.h>
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#include <cassert>
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#include <cstdint>
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#include <functional>
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#include <iosfwd>
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#include <memory>
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#include <string>
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int main(int argc, char* argv[])
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{
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// SETUP: Argument parsing and handling
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if (argc != 2) {
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std::cerr
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<< "Usage: " << argv[0] << " DATADIR" << std::endl
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<< "Display DATADIR information, and process hex-encoded blocks on standard input." << std::endl
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<< std::endl
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<< "IMPORTANT: THIS EXECUTABLE IS EXPERIMENTAL, FOR TESTING ONLY, AND EXPECTED TO" << std::endl
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<< " BREAK IN FUTURE VERSIONS. DO NOT USE ON YOUR ACTUAL DATADIR." << std::endl;
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return 1;
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}
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fs::path abs_datadir{fs::absolute(argv[1])};
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fs::create_directories(abs_datadir);
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// SETUP: Context
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kernel::Context kernel_context{};
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// We can't use a goto here, but we can use an assert since none of the
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// things instantiated so far requires running the epilogue to be torn down
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// properly
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assert(kernel::SanityChecks(kernel_context));
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// Necessary for CheckInputScripts (eventually called by ProcessNewBlock),
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// which will try the script cache first and fall back to actually
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// performing the check with the signature cache.
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kernel::ValidationCacheSizes validation_cache_sizes{};
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Assert(InitSignatureCache(validation_cache_sizes.signature_cache_bytes));
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Assert(InitScriptExecutionCache(validation_cache_sizes.script_execution_cache_bytes));
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ValidationSignals validation_signals{std::make_unique<util::ImmediateTaskRunner>()};
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class KernelNotifications : public kernel::Notifications
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{
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public:
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kernel::InterruptResult blockTip(SynchronizationState, CBlockIndex&) override
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{
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std::cout << "Block tip changed" << std::endl;
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return {};
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}
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void headerTip(SynchronizationState, int64_t height, int64_t timestamp, bool presync) override
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{
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std::cout << "Header tip changed: " << height << ", " << timestamp << ", " << presync << std::endl;
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}
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void progress(const bilingual_str& title, int progress_percent, bool resume_possible) override
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{
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std::cout << "Progress: " << title.original << ", " << progress_percent << ", " << resume_possible << std::endl;
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}
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void warning(const bilingual_str& warning) override
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{
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std::cout << "Warning: " << warning.original << std::endl;
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}
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void flushError(const bilingual_str& message) override
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{
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std::cerr << "Error flushing block data to disk: " << message.original << std::endl;
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}
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void fatalError(const bilingual_str& message) override
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{
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std::cerr << "Error: " << message.original << std::endl;
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}
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};
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auto notifications = std::make_unique<KernelNotifications>();
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// SETUP: Chainstate
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auto chainparams = CChainParams::Main();
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const ChainstateManager::Options chainman_opts{
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.chainparams = *chainparams,
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.datadir = abs_datadir,
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.notifications = *notifications,
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.signals = &validation_signals,
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};
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const node::BlockManager::Options blockman_opts{
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.chainparams = chainman_opts.chainparams,
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.blocks_dir = abs_datadir / "blocks",
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.notifications = chainman_opts.notifications,
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};
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util::SignalInterrupt interrupt;
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ChainstateManager chainman{interrupt, chainman_opts, blockman_opts};
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node::CacheSizes cache_sizes;
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cache_sizes.block_tree_db = 2 << 20;
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cache_sizes.coins_db = 2 << 22;
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cache_sizes.coins = (450 << 20) - (2 << 20) - (2 << 22);
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node::ChainstateLoadOptions options;
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auto [status, error] = node::LoadChainstate(chainman, cache_sizes, options);
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if (status != node::ChainstateLoadStatus::SUCCESS) {
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std::cerr << "Failed to load Chain state from your datadir." << std::endl;
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goto epilogue;
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} else {
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std::tie(status, error) = node::VerifyLoadedChainstate(chainman, options);
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if (status != node::ChainstateLoadStatus::SUCCESS) {
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std::cerr << "Failed to verify loaded Chain state from your datadir." << std::endl;
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goto epilogue;
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}
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}
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for (Chainstate* chainstate : WITH_LOCK(::cs_main, return chainman.GetAll())) {
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BlockValidationState state;
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if (!chainstate->ActivateBestChain(state, nullptr)) {
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std::cerr << "Failed to connect best block (" << state.ToString() << ")" << std::endl;
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goto epilogue;
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}
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}
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// Main program logic starts here
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std::cout
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<< "Hello! I'm going to print out some information about your datadir." << std::endl
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<< "\t"
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<< "Path: " << abs_datadir << std::endl;
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{
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LOCK(chainman.GetMutex());
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std::cout
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<< "\t" << "Blockfiles Indexed: " << std::boolalpha << chainman.m_blockman.m_blockfiles_indexed.load() << std::noboolalpha << std::endl
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<< "\t" << "Snapshot Active: " << std::boolalpha << chainman.IsSnapshotActive() << std::noboolalpha << std::endl
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<< "\t" << "Active Height: " << chainman.ActiveHeight() << std::endl
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<< "\t" << "Active IBD: " << std::boolalpha << chainman.IsInitialBlockDownload() << std::noboolalpha << std::endl;
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CBlockIndex* tip = chainman.ActiveTip();
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if (tip) {
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std::cout << "\t" << tip->ToString() << std::endl;
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}
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}
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for (std::string line; std::getline(std::cin, line);) {
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if (line.empty()) {
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std::cerr << "Empty line found" << std::endl;
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break;
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}
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std::shared_ptr<CBlock> blockptr = std::make_shared<CBlock>();
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CBlock& block = *blockptr;
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if (!DecodeHexBlk(block, line)) {
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std::cerr << "Block decode failed" << std::endl;
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break;
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}
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if (block.vtx.empty() || !block.vtx[0]->IsCoinBase()) {
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std::cerr << "Block does not start with a coinbase" << std::endl;
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break;
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}
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uint256 hash = block.GetHash();
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{
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LOCK(cs_main);
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const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(hash);
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if (pindex) {
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if (pindex->IsValid(BLOCK_VALID_SCRIPTS)) {
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std::cerr << "duplicate" << std::endl;
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break;
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}
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if (pindex->nStatus & BLOCK_FAILED_MASK) {
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std::cerr << "duplicate-invalid" << std::endl;
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break;
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}
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}
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}
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{
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LOCK(cs_main);
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const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(block.hashPrevBlock);
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if (pindex) {
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chainman.UpdateUncommittedBlockStructures(block, pindex);
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}
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}
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// Adapted from rpc/mining.cpp
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class submitblock_StateCatcher final : public CValidationInterface
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{
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public:
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uint256 hash;
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bool found;
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BlockValidationState state;
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explicit submitblock_StateCatcher(const uint256& hashIn) : hash(hashIn), found(false), state() {}
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protected:
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void BlockChecked(const CBlock& block, const BlockValidationState& stateIn) override
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{
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if (block.GetHash() != hash)
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return;
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found = true;
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state = stateIn;
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}
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};
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bool new_block;
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auto sc = std::make_shared<submitblock_StateCatcher>(block.GetHash());
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validation_signals.RegisterSharedValidationInterface(sc);
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bool accepted = chainman.ProcessNewBlock(blockptr, /*force_processing=*/true, /*min_pow_checked=*/true, /*new_block=*/&new_block);
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validation_signals.UnregisterSharedValidationInterface(sc);
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if (!new_block && accepted) {
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std::cerr << "duplicate" << std::endl;
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break;
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}
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if (!sc->found) {
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std::cerr << "inconclusive" << std::endl;
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break;
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}
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std::cout << sc->state.ToString() << std::endl;
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switch (sc->state.GetResult()) {
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case BlockValidationResult::BLOCK_RESULT_UNSET:
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std::cerr << "initial value. Block has not yet been rejected" << std::endl;
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break;
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case BlockValidationResult::BLOCK_HEADER_LOW_WORK:
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std::cerr << "the block header may be on a too-little-work chain" << std::endl;
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break;
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case BlockValidationResult::BLOCK_CONSENSUS:
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std::cerr << "invalid by consensus rules (excluding any below reasons)" << std::endl;
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break;
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case BlockValidationResult::BLOCK_RECENT_CONSENSUS_CHANGE:
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std::cerr << "Invalid by a change to consensus rules more recent than SegWit." << std::endl;
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break;
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case BlockValidationResult::BLOCK_CACHED_INVALID:
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std::cerr << "this block was cached as being invalid and we didn't store the reason why" << std::endl;
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break;
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case BlockValidationResult::BLOCK_INVALID_HEADER:
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std::cerr << "invalid proof of work or time too old" << std::endl;
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break;
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case BlockValidationResult::BLOCK_MUTATED:
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std::cerr << "the block's data didn't match the data committed to by the PoW" << std::endl;
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break;
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case BlockValidationResult::BLOCK_MISSING_PREV:
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std::cerr << "We don't have the previous block the checked one is built on" << std::endl;
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break;
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case BlockValidationResult::BLOCK_INVALID_PREV:
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std::cerr << "A block this one builds on is invalid" << std::endl;
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break;
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case BlockValidationResult::BLOCK_TIME_FUTURE:
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std::cerr << "block timestamp was > 2 hours in the future (or our clock is bad)" << std::endl;
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break;
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case BlockValidationResult::BLOCK_CHECKPOINT:
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std::cerr << "the block failed to meet one of our checkpoints" << std::endl;
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break;
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}
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}
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epilogue:
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// Without this precise shutdown sequence, there will be a lot of nullptr
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// dereferencing and UB.
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if (chainman.m_thread_load.joinable()) chainman.m_thread_load.join();
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validation_signals.FlushBackgroundCallbacks();
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{
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LOCK(cs_main);
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for (Chainstate* chainstate : chainman.GetAll()) {
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if (chainstate->CanFlushToDisk()) {
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chainstate->ForceFlushStateToDisk();
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chainstate->ResetCoinsViews();
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}
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}
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}
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}
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