Move ChainImpl from interfaces/chain.cpp to node/interfaces.cpp

No changes to ChainImpl or any related classes (review with `git diff --color-moved=dimmed_zebra`)

1 files changed, 0 insertions, 417 deletions

diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
deleted file mode 100644
index 4c5ebe66fc..0000000000
--- a/src/interfaces/chain.cpp
+++ /dev/null
@@ -1,417 +0,0 @@
-// 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 <node/ui_interface.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 <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 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, uint64_t mempool_sequence) override
-    {
-        m_notifications->transactionAddedToMempool(tx, mempool_sequence);
-    }
-    void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t mempool_sequence) override
-    {
-        m_notifications->transactionRemovedFromMempool(tx, reason, mempool_sequence);
-    }
-    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() 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) {}
-    Optional<int> getHeight() override
-    {
-        LOCK(::cs_main);
-        int height = ::ChainActive().Height();
-        if (height >= 0) {
-            return height;
-        }
-        return nullopt;
-    }
-    Optional<int> getBlockHeight(const uint256& hash) override
-    {
-        LOCK(::cs_main);
-        CBlockIndex* block = LookupBlockIndex(hash);
-        if (block && ::ChainActive().Contains(block)) {
-            return block->nHeight;
-        }
-        return nullopt;
-    }
-    uint256 getBlockHash(int height) override
-    {
-        LOCK(::cs_main);
-        CBlockIndex* block = ::ChainActive()[height];
-        assert(block);
-        return block->GetBlockHash();
-    }
-    bool haveBlockOnDisk(int height) override
-    {
-        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
-    {
-        LOCK(cs_main);
-        CBlockIndex* block = ::ChainActive().FindEarliestAtLeast(time, height);
-        if (block) {
-            if (hash) *hash = block->GetBlockHash();
-            return block->nHeight;
-        }
-        return nullopt;
-    }
-    CBlockLocator getTipLocator() override
-    {
-        LOCK(cs_main);
-        return ::ChainActive().GetLocator();
-    }
-    bool checkFinalTx(const CTransaction& tx) override
-    {
-        LOCK(cs_main);
-        return CheckFinalTx(tx);
-    }
-    Optional<int> findLocatorFork(const CBlockLocator& locator) override
-    {
-        LOCK(cs_main);
-        if (CBlockIndex* fork = FindForkInGlobalIndex(::ChainActive(), locator)) {
-            return fork->nHeight;
-        }
-        return nullopt;
-    }
-    bool findBlock(const uint256& hash, const FoundBlock& block) override
-    {
-        WAIT_LOCK(cs_main, lock);
-        return FillBlock(LookupBlockIndex(hash), block, lock);
-    }
-    bool findFirstBlockWithTimeAndHeight(int64_t min_time, int min_height, const FoundBlock& block) override
-    {
-        WAIT_LOCK(cs_main, lock);
-        return FillBlock(ChainActive().FindEarliestAtLeast(min_time, min_height), block, lock);
-    }
-    bool findNextBlock(const uint256& block_hash, int block_height, const FoundBlock& next, bool* reorg) override {
-        WAIT_LOCK(cs_main, lock);
-        CBlockIndex* block = ChainActive()[block_height];
-        if (block && block->GetBlockHash() != block_hash) block = nullptr;
-        if (reorg) *reorg = !block;
-        return FillBlock(block ? ChainActive()[block_height + 1] : nullptr, next, lock);
-    }
-    bool findAncestorByHeight(const uint256& block_hash, int ancestor_height, const FoundBlock& ancestor_out) override
-    {
-        WAIT_LOCK(cs_main, lock);
-        if (const CBlockIndex* block = LookupBlockIndex(block_hash)) {
-            if (const CBlockIndex* ancestor = block->GetAncestor(ancestor_height)) {
-                return FillBlock(ancestor, ancestor_out, lock);
-            }
-        }
-        return FillBlock(nullptr, ancestor_out, lock);
-    }
-    bool findAncestorByHash(const uint256& block_hash, const uint256& ancestor_hash, const FoundBlock& ancestor_out) override
-    {
-        WAIT_LOCK(cs_main, lock);
-        const CBlockIndex* block = LookupBlockIndex(block_hash);
-        const CBlockIndex* ancestor = LookupBlockIndex(ancestor_hash);
-        if (block && ancestor && block->GetAncestor(ancestor->nHeight) != ancestor) ancestor = nullptr;
-        return FillBlock(ancestor, ancestor_out, lock);
-    }
-    bool findCommonAncestor(const uint256& block_hash1, const uint256& block_hash2, const FoundBlock& ancestor_out, const FoundBlock& block1_out, const FoundBlock& block2_out) override
-    {
-        WAIT_LOCK(cs_main, lock);
-        const CBlockIndex* block1 = LookupBlockIndex(block_hash1);
-        const CBlockIndex* block2 = LookupBlockIndex(block_hash2);
-        const CBlockIndex* ancestor = block1 && block2 ? LastCommonAncestor(block1, block2) : nullptr;
-        // Using & instead of && below to avoid short circuiting and leaving
-        // output uninitialized.
-        return FillBlock(ancestor, ancestor_out, lock) & FillBlock(block1, block1_out, lock) & FillBlock(block2, block2_out, 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));
-    }
-    bool hasBlocks(const uint256& block_hash, int min_height, Optional<int> max_height) override
-    {
-        // hasBlocks returns true if all ancestors of block_hash in specified
-        // range have block data (are not pruned), false if any ancestors in
-        // specified range are missing data.
-        //
-        // For simplicity and robustness, min_height and max_height are only
-        // used to limit the range, and passing min_height that's too low or
-        // max_height that's too high will not crash or change the result.
-        LOCK(::cs_main);
-        if (CBlockIndex* block = LookupBlockIndex(block_hash)) {
-            if (max_height && block->nHeight >= *max_height) block = block->GetAncestor(*max_height);
-            for (; block->nStatus & BLOCK_HAVE_DATA; block = block->pprev) {
-                // Check pprev to not segfault if min_height is too low
-                if (block->nHeight <= min_height || !block->pprev) return true;
-            }
-        }
-        return false;
-    }
-    RBFTransactionState isRBFOptIn(const CTransaction& tx) override
-    {
-        if (!m_node.mempool) return IsRBFOptInEmptyMempool(tx);
-        LOCK(m_node.mempool->cs);
-        return IsRBFOptIn(tx, *m_node.mempool);
-    }
-    bool hasDescendantsInMempool(const uint256& txid) override
-    {
-        if (!m_node.mempool) return false;
-        LOCK(m_node.mempool->cs);
-        auto it = m_node.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
-    {
-        ancestors = descendants = 0;
-        if (!m_node.mempool) return;
-        m_node.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
-    {
-        if (!m_node.mempool) return true;
-        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(m_node.mempool->cs);
-        return m_node.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
-    {
-        if (!m_node.mempool) return {};
-        return m_node.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 bilingual_str& message) override { InitWarning(message); }
-    void initError(const bilingual_str& 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(); }
-    util::SettingsValue getRwSetting(const std::string& name) override
-    {
-        util::SettingsValue result;
-        gArgs.LockSettings([&](const util::Settings& settings) {
-            if (const util::SettingsValue* value = util::FindKey(settings.rw_settings, name)) {
-                result = *value;
-            }
-        });
-        return result;
-    }
-    bool updateRwSetting(const std::string& name, const util::SettingsValue& value) override
-    {
-        gArgs.LockSettings([&](util::Settings& settings) {
-            if (value.isNull()) {
-                settings.rw_settings.erase(name);
-            } else {
-                settings.rw_settings[name] = value;
-            }
-        });
-        return gArgs.WriteSettingsFile();
-    }
-    void requestMempoolTransactions(Notifications& notifications) override
-    {
-        if (!m_node.mempool) return;
-        LOCK2(::cs_main, m_node.mempool->cs);
-        for (const CTxMemPoolEntry& entry : m_node.mempool->mapTx) {
-            notifications.transactionAddedToMempool(entry.GetSharedTx(), 0 /* mempool_sequence */);
-        }
-    }
-    NodeContext& m_node;
-};
-} // namespace
-
-std::unique_ptr<Chain> MakeChain(NodeContext& node) { return MakeUnique<ChainImpl>(node); }
-
-} // namespace interfaces