mirror of
https://github.com/ElementsProject/elements.git
synced 2026-08-18 13:17:55 +02:00
bf30cd4922
FoundBlock class allows interfaces::Chain::findBlock to return more block information without having lots of optional output parameters. FoundBlock class is also used by other chain methods in upcoming commits. There is mostly no change in behavior. Only exception is CWallet::RescanFromTime now throwing NonFatalCheckError instead of std::logic_error.
387 lines
14 KiB
C++
387 lines
14 KiB
C++
// Copyright (c) 2018-2020 The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#include <interfaces/chain.h>
|
|
|
|
#include <chain.h>
|
|
#include <chainparams.h>
|
|
#include <interfaces/handler.h>
|
|
#include <interfaces/wallet.h>
|
|
#include <net.h>
|
|
#include <net_processing.h>
|
|
#include <node/coin.h>
|
|
#include <node/context.h>
|
|
#include <node/transaction.h>
|
|
#include <policy/fees.h>
|
|
#include <policy/policy.h>
|
|
#include <policy/rbf.h>
|
|
#include <policy/settings.h>
|
|
#include <primitives/block.h>
|
|
#include <primitives/transaction.h>
|
|
#include <rpc/protocol.h>
|
|
#include <rpc/server.h>
|
|
#include <shutdown.h>
|
|
#include <sync.h>
|
|
#include <timedata.h>
|
|
#include <txmempool.h>
|
|
#include <ui_interface.h>
|
|
#include <uint256.h>
|
|
#include <univalue.h>
|
|
#include <util/system.h>
|
|
#include <validation.h>
|
|
#include <validationinterface.h>
|
|
|
|
#include <memory>
|
|
#include <utility>
|
|
|
|
namespace interfaces {
|
|
namespace {
|
|
|
|
bool FillBlock(const CBlockIndex* index, const FoundBlock& block, UniqueLock<RecursiveMutex>& lock)
|
|
{
|
|
if (!index) return false;
|
|
if (block.m_hash) *block.m_hash = index->GetBlockHash();
|
|
if (block.m_height) *block.m_height = index->nHeight;
|
|
if (block.m_time) *block.m_time = index->GetBlockTime();
|
|
if (block.m_max_time) *block.m_max_time = index->GetBlockTimeMax();
|
|
if (block.m_mtp_time) *block.m_mtp_time = index->GetMedianTimePast();
|
|
if (block.m_data) {
|
|
REVERSE_LOCK(lock);
|
|
if (!ReadBlockFromDisk(*block.m_data, index, Params().GetConsensus())) block.m_data->SetNull();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
class LockImpl : public Chain::Lock, public UniqueLock<RecursiveMutex>
|
|
{
|
|
Optional<int> getHeight() override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
int height = ::ChainActive().Height();
|
|
if (height >= 0) {
|
|
return height;
|
|
}
|
|
return nullopt;
|
|
}
|
|
Optional<int> getBlockHeight(const uint256& hash) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
CBlockIndex* block = LookupBlockIndex(hash);
|
|
if (block && ::ChainActive().Contains(block)) {
|
|
return block->nHeight;
|
|
}
|
|
return nullopt;
|
|
}
|
|
uint256 getBlockHash(int height) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
CBlockIndex* block = ::ChainActive()[height];
|
|
assert(block != nullptr);
|
|
return block->GetBlockHash();
|
|
}
|
|
int64_t getBlockTime(int height) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
CBlockIndex* block = ::ChainActive()[height];
|
|
assert(block != nullptr);
|
|
return block->GetBlockTime();
|
|
}
|
|
int64_t getBlockMedianTimePast(int height) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
CBlockIndex* block = ::ChainActive()[height];
|
|
assert(block != nullptr);
|
|
return block->GetMedianTimePast();
|
|
}
|
|
bool haveBlockOnDisk(int height) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
CBlockIndex* block = ::ChainActive()[height];
|
|
return block && ((block->nStatus & BLOCK_HAVE_DATA) != 0) && block->nTx > 0;
|
|
}
|
|
Optional<int> findFirstBlockWithTimeAndHeight(int64_t time, int height, uint256* hash) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
CBlockIndex* block = ::ChainActive().FindEarliestAtLeast(time, height);
|
|
if (block) {
|
|
if (hash) *hash = block->GetBlockHash();
|
|
return block->nHeight;
|
|
}
|
|
return nullopt;
|
|
}
|
|
Optional<int> findPruned(int start_height, Optional<int> stop_height) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
if (::fPruneMode) {
|
|
CBlockIndex* block = stop_height ? ::ChainActive()[*stop_height] : ::ChainActive().Tip();
|
|
while (block && block->nHeight >= start_height) {
|
|
if ((block->nStatus & BLOCK_HAVE_DATA) == 0) {
|
|
return block->nHeight;
|
|
}
|
|
block = block->pprev;
|
|
}
|
|
}
|
|
return nullopt;
|
|
}
|
|
Optional<int> findFork(const uint256& hash, Optional<int>* height) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
const CBlockIndex* block = LookupBlockIndex(hash);
|
|
const CBlockIndex* fork = block ? ::ChainActive().FindFork(block) : nullptr;
|
|
if (height) {
|
|
if (block) {
|
|
*height = block->nHeight;
|
|
} else {
|
|
height->reset();
|
|
}
|
|
}
|
|
if (fork) {
|
|
return fork->nHeight;
|
|
}
|
|
return nullopt;
|
|
}
|
|
CBlockLocator getTipLocator() override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
return ::ChainActive().GetLocator();
|
|
}
|
|
Optional<int> findLocatorFork(const CBlockLocator& locator) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
if (CBlockIndex* fork = FindForkInGlobalIndex(::ChainActive(), locator)) {
|
|
return fork->nHeight;
|
|
}
|
|
return nullopt;
|
|
}
|
|
bool checkFinalTx(const CTransaction& tx) override
|
|
{
|
|
LockAssertion lock(::cs_main);
|
|
return CheckFinalTx(tx);
|
|
}
|
|
|
|
using UniqueLock::UniqueLock;
|
|
};
|
|
|
|
class NotificationsProxy : public CValidationInterface
|
|
{
|
|
public:
|
|
explicit NotificationsProxy(std::shared_ptr<Chain::Notifications> notifications)
|
|
: m_notifications(std::move(notifications)) {}
|
|
virtual ~NotificationsProxy() = default;
|
|
void TransactionAddedToMempool(const CTransactionRef& tx) override
|
|
{
|
|
m_notifications->transactionAddedToMempool(tx);
|
|
}
|
|
void TransactionRemovedFromMempool(const CTransactionRef& tx) override
|
|
{
|
|
m_notifications->transactionRemovedFromMempool(tx);
|
|
}
|
|
void BlockConnected(const std::shared_ptr<const CBlock>& block, const CBlockIndex* index) override
|
|
{
|
|
m_notifications->blockConnected(*block, index->nHeight);
|
|
}
|
|
void BlockDisconnected(const std::shared_ptr<const CBlock>& block, const CBlockIndex* index) override
|
|
{
|
|
m_notifications->blockDisconnected(*block, index->nHeight);
|
|
}
|
|
void UpdatedBlockTip(const CBlockIndex* index, const CBlockIndex* fork_index, bool is_ibd) override
|
|
{
|
|
m_notifications->updatedBlockTip();
|
|
}
|
|
void ChainStateFlushed(const CBlockLocator& locator) override { m_notifications->chainStateFlushed(locator); }
|
|
std::shared_ptr<Chain::Notifications> m_notifications;
|
|
};
|
|
|
|
class NotificationsHandlerImpl : public Handler
|
|
{
|
|
public:
|
|
explicit NotificationsHandlerImpl(std::shared_ptr<Chain::Notifications> notifications)
|
|
: m_proxy(std::make_shared<NotificationsProxy>(std::move(notifications)))
|
|
{
|
|
RegisterSharedValidationInterface(m_proxy);
|
|
}
|
|
~NotificationsHandlerImpl() override { disconnect(); }
|
|
void disconnect() override
|
|
{
|
|
if (m_proxy) {
|
|
UnregisterSharedValidationInterface(m_proxy);
|
|
m_proxy.reset();
|
|
}
|
|
}
|
|
std::shared_ptr<NotificationsProxy> m_proxy;
|
|
};
|
|
|
|
class RpcHandlerImpl : public Handler
|
|
{
|
|
public:
|
|
explicit RpcHandlerImpl(const CRPCCommand& command) : m_command(command), m_wrapped_command(&command)
|
|
{
|
|
m_command.actor = [this](const JSONRPCRequest& request, UniValue& result, bool last_handler) {
|
|
if (!m_wrapped_command) return false;
|
|
try {
|
|
return m_wrapped_command->actor(request, result, last_handler);
|
|
} catch (const UniValue& e) {
|
|
// If this is not the last handler and a wallet not found
|
|
// exception was thrown, return false so the next handler can
|
|
// try to handle the request. Otherwise, reraise the exception.
|
|
if (!last_handler) {
|
|
const UniValue& code = e["code"];
|
|
if (code.isNum() && code.get_int() == RPC_WALLET_NOT_FOUND) {
|
|
return false;
|
|
}
|
|
}
|
|
throw;
|
|
}
|
|
};
|
|
::tableRPC.appendCommand(m_command.name, &m_command);
|
|
}
|
|
|
|
void disconnect() override final
|
|
{
|
|
if (m_wrapped_command) {
|
|
m_wrapped_command = nullptr;
|
|
::tableRPC.removeCommand(m_command.name, &m_command);
|
|
}
|
|
}
|
|
|
|
~RpcHandlerImpl() override { disconnect(); }
|
|
|
|
CRPCCommand m_command;
|
|
const CRPCCommand* m_wrapped_command;
|
|
};
|
|
|
|
class ChainImpl : public Chain
|
|
{
|
|
public:
|
|
explicit ChainImpl(NodeContext& node) : m_node(node) {}
|
|
std::unique_ptr<Chain::Lock> lock(bool try_lock) override
|
|
{
|
|
auto lock = MakeUnique<LockImpl>(::cs_main, "cs_main", __FILE__, __LINE__, try_lock);
|
|
if (try_lock && lock && !*lock) return {};
|
|
std::unique_ptr<Chain::Lock> result = std::move(lock); // Temporary to avoid CWG 1579
|
|
return result;
|
|
}
|
|
bool findBlock(const uint256& hash, const FoundBlock& block) override
|
|
{
|
|
WAIT_LOCK(cs_main, lock);
|
|
return FillBlock(LookupBlockIndex(hash), block, lock);
|
|
}
|
|
void findCoins(std::map<COutPoint, Coin>& coins) override { return FindCoins(m_node, coins); }
|
|
double guessVerificationProgress(const uint256& block_hash) override
|
|
{
|
|
LOCK(cs_main);
|
|
return GuessVerificationProgress(Params().TxData(), LookupBlockIndex(block_hash));
|
|
}
|
|
RBFTransactionState isRBFOptIn(const CTransaction& tx) override
|
|
{
|
|
LOCK(::mempool.cs);
|
|
return IsRBFOptIn(tx, ::mempool);
|
|
}
|
|
bool hasDescendantsInMempool(const uint256& txid) override
|
|
{
|
|
LOCK(::mempool.cs);
|
|
auto it = ::mempool.GetIter(txid);
|
|
return it && (*it)->GetCountWithDescendants() > 1;
|
|
}
|
|
bool broadcastTransaction(const CTransactionRef& tx,
|
|
const CAmount& max_tx_fee,
|
|
bool relay,
|
|
std::string& err_string) override
|
|
{
|
|
const TransactionError err = BroadcastTransaction(m_node, tx, err_string, max_tx_fee, relay, /*wait_callback*/ false);
|
|
// Chain clients only care about failures to accept the tx to the mempool. Disregard non-mempool related failures.
|
|
// Note: this will need to be updated if BroadcastTransactions() is updated to return other non-mempool failures
|
|
// that Chain clients do not need to know about.
|
|
return TransactionError::OK == err;
|
|
}
|
|
void getTransactionAncestry(const uint256& txid, size_t& ancestors, size_t& descendants) override
|
|
{
|
|
::mempool.GetTransactionAncestry(txid, ancestors, descendants);
|
|
}
|
|
void getPackageLimits(unsigned int& limit_ancestor_count, unsigned int& limit_descendant_count) override
|
|
{
|
|
limit_ancestor_count = gArgs.GetArg("-limitancestorcount", DEFAULT_ANCESTOR_LIMIT);
|
|
limit_descendant_count = gArgs.GetArg("-limitdescendantcount", DEFAULT_DESCENDANT_LIMIT);
|
|
}
|
|
bool checkChainLimits(const CTransactionRef& tx) override
|
|
{
|
|
LockPoints lp;
|
|
CTxMemPoolEntry entry(tx, 0, 0, 0, false, 0, lp);
|
|
CTxMemPool::setEntries ancestors;
|
|
auto limit_ancestor_count = gArgs.GetArg("-limitancestorcount", DEFAULT_ANCESTOR_LIMIT);
|
|
auto limit_ancestor_size = gArgs.GetArg("-limitancestorsize", DEFAULT_ANCESTOR_SIZE_LIMIT) * 1000;
|
|
auto limit_descendant_count = gArgs.GetArg("-limitdescendantcount", DEFAULT_DESCENDANT_LIMIT);
|
|
auto limit_descendant_size = gArgs.GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) * 1000;
|
|
std::string unused_error_string;
|
|
LOCK(::mempool.cs);
|
|
return ::mempool.CalculateMemPoolAncestors(entry, ancestors, limit_ancestor_count, limit_ancestor_size,
|
|
limit_descendant_count, limit_descendant_size, unused_error_string);
|
|
}
|
|
CFeeRate estimateSmartFee(int num_blocks, bool conservative, FeeCalculation* calc) override
|
|
{
|
|
return ::feeEstimator.estimateSmartFee(num_blocks, calc, conservative);
|
|
}
|
|
unsigned int estimateMaxBlocks() override
|
|
{
|
|
return ::feeEstimator.HighestTargetTracked(FeeEstimateHorizon::LONG_HALFLIFE);
|
|
}
|
|
CFeeRate mempoolMinFee() override
|
|
{
|
|
return ::mempool.GetMinFee(gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000);
|
|
}
|
|
CFeeRate relayMinFee() override { return ::minRelayTxFee; }
|
|
CFeeRate relayIncrementalFee() override { return ::incrementalRelayFee; }
|
|
CFeeRate relayDustFee() override { return ::dustRelayFee; }
|
|
bool havePruned() override
|
|
{
|
|
LOCK(cs_main);
|
|
return ::fHavePruned;
|
|
}
|
|
bool isReadyToBroadcast() override { return !::fImporting && !::fReindex && !isInitialBlockDownload(); }
|
|
bool isInitialBlockDownload() override { return ::ChainstateActive().IsInitialBlockDownload(); }
|
|
bool shutdownRequested() override { return ShutdownRequested(); }
|
|
int64_t getAdjustedTime() override { return GetAdjustedTime(); }
|
|
void initMessage(const std::string& message) override { ::uiInterface.InitMessage(message); }
|
|
void initWarning(const std::string& message) override { InitWarning(message); }
|
|
void initError(const std::string& message) override { InitError(message); }
|
|
void showProgress(const std::string& title, int progress, bool resume_possible) override
|
|
{
|
|
::uiInterface.ShowProgress(title, progress, resume_possible);
|
|
}
|
|
std::unique_ptr<Handler> handleNotifications(std::shared_ptr<Notifications> notifications) override
|
|
{
|
|
return MakeUnique<NotificationsHandlerImpl>(std::move(notifications));
|
|
}
|
|
void waitForNotificationsIfTipChanged(const uint256& old_tip) override
|
|
{
|
|
if (!old_tip.IsNull()) {
|
|
LOCK(::cs_main);
|
|
if (old_tip == ::ChainActive().Tip()->GetBlockHash()) return;
|
|
}
|
|
SyncWithValidationInterfaceQueue();
|
|
}
|
|
std::unique_ptr<Handler> handleRpc(const CRPCCommand& command) override
|
|
{
|
|
return MakeUnique<RpcHandlerImpl>(command);
|
|
}
|
|
bool rpcEnableDeprecated(const std::string& method) override { return IsDeprecatedRPCEnabled(method); }
|
|
void rpcRunLater(const std::string& name, std::function<void()> fn, int64_t seconds) override
|
|
{
|
|
RPCRunLater(name, std::move(fn), seconds);
|
|
}
|
|
int rpcSerializationFlags() override { return RPCSerializationFlags(); }
|
|
void requestMempoolTransactions(Notifications& notifications) override
|
|
{
|
|
LOCK2(::cs_main, ::mempool.cs);
|
|
for (const CTxMemPoolEntry& entry : ::mempool.mapTx) {
|
|
notifications.transactionAddedToMempool(entry.GetSharedTx());
|
|
}
|
|
}
|
|
NodeContext& m_node;
|
|
};
|
|
} // namespace
|
|
|
|
std::unique_ptr<Chain> MakeChain(NodeContext& node) { return MakeUnique<ChainImpl>(node); }
|
|
|
|
} // namespace interfaces
|