diff options
Diffstat (limited to 'src/rpc/mempool.cpp')
| -rw-r--r-- | src/rpc/mempool.cpp | 476 |
1 files changed, 476 insertions, 0 deletions
diff --git a/src/rpc/mempool.cpp b/src/rpc/mempool.cpp new file mode 100644 index 0000000000..bc7ef0c08e --- /dev/null +++ b/src/rpc/mempool.cpp @@ -0,0 +1,476 @@ +// Copyright (c) 2010 Satoshi Nakamoto +// Copyright (c) 2009-2022 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 <rpc/blockchain.h> + +#include <core_io.h> +#include <fs.h> +#include <policy/rbf.h> +#include <primitives/transaction.h> +#include <rpc/server.h> +#include <rpc/server_util.h> +#include <rpc/util.h> +#include <txmempool.h> +#include <univalue.h> +#include <validation.h> + +static std::vector<RPCResult> MempoolEntryDescription() { return { + RPCResult{RPCResult::Type::NUM, "vsize", "virtual transaction size as defined in BIP 141. This is different from actual serialized size for witness transactions as witness data is discounted."}, + RPCResult{RPCResult::Type::NUM, "weight", "transaction weight as defined in BIP 141."}, + RPCResult{RPCResult::Type::STR_AMOUNT, "fee", /*optional=*/true, + "transaction fee, denominated in " + CURRENCY_UNIT + " (DEPRECATED, returned only if config option -deprecatedrpc=fees is passed)"}, + RPCResult{RPCResult::Type::STR_AMOUNT, "modifiedfee", /*optional=*/true, + "transaction fee with fee deltas used for mining priority, denominated in " + CURRENCY_UNIT + + " (DEPRECATED, returned only if config option -deprecatedrpc=fees is passed)"}, + RPCResult{RPCResult::Type::NUM_TIME, "time", "local time transaction entered pool in seconds since 1 Jan 1970 GMT"}, + RPCResult{RPCResult::Type::NUM, "height", "block height when transaction entered pool"}, + RPCResult{RPCResult::Type::NUM, "descendantcount", "number of in-mempool descendant transactions (including this one)"}, + RPCResult{RPCResult::Type::NUM, "descendantsize", "virtual transaction size of in-mempool descendants (including this one)"}, + RPCResult{RPCResult::Type::STR_AMOUNT, "descendantfees", /*optional=*/true, + "transaction fees of in-mempool descendants (including this one) with fee deltas used for mining priority, denominated in " + + CURRENCY_ATOM + "s (DEPRECATED, returned only if config option -deprecatedrpc=fees is passed)"}, + RPCResult{RPCResult::Type::NUM, "ancestorcount", "number of in-mempool ancestor transactions (including this one)"}, + RPCResult{RPCResult::Type::NUM, "ancestorsize", "virtual transaction size of in-mempool ancestors (including this one)"}, + RPCResult{RPCResult::Type::STR_AMOUNT, "ancestorfees", /*optional=*/true, + "transaction fees of in-mempool ancestors (including this one) with fee deltas used for mining priority, denominated in " + + CURRENCY_ATOM + "s (DEPRECATED, returned only if config option -deprecatedrpc=fees is passed)"}, + RPCResult{RPCResult::Type::STR_HEX, "wtxid", "hash of serialized transaction, including witness data"}, + RPCResult{RPCResult::Type::OBJ, "fees", "", + { + RPCResult{RPCResult::Type::STR_AMOUNT, "base", "transaction fee, denominated in " + CURRENCY_UNIT}, + RPCResult{RPCResult::Type::STR_AMOUNT, "modified", "transaction fee with fee deltas used for mining priority, denominated in " + CURRENCY_UNIT}, + RPCResult{RPCResult::Type::STR_AMOUNT, "ancestor", "transaction fees of in-mempool ancestors (including this one) with fee deltas used for mining priority, denominated in " + CURRENCY_UNIT}, + RPCResult{RPCResult::Type::STR_AMOUNT, "descendant", "transaction fees of in-mempool descendants (including this one) with fee deltas used for mining priority, denominated in " + CURRENCY_UNIT}, + }}, + RPCResult{RPCResult::Type::ARR, "depends", "unconfirmed transactions used as inputs for this transaction", + {RPCResult{RPCResult::Type::STR_HEX, "transactionid", "parent transaction id"}}}, + RPCResult{RPCResult::Type::ARR, "spentby", "unconfirmed transactions spending outputs from this transaction", + {RPCResult{RPCResult::Type::STR_HEX, "transactionid", "child transaction id"}}}, + RPCResult{RPCResult::Type::BOOL, "bip125-replaceable", "Whether this transaction could be replaced due to BIP125 (replace-by-fee)"}, + RPCResult{RPCResult::Type::BOOL, "unbroadcast", "Whether this transaction is currently unbroadcast (initial broadcast not yet acknowledged by any peers)"}, +};} + +static void entryToJSON(const CTxMemPool& pool, UniValue& info, const CTxMemPoolEntry& e) EXCLUSIVE_LOCKS_REQUIRED(pool.cs) +{ + AssertLockHeld(pool.cs); + + info.pushKV("vsize", (int)e.GetTxSize()); + info.pushKV("weight", (int)e.GetTxWeight()); + // TODO: top-level fee fields are deprecated. deprecated_fee_fields_enabled blocks should be removed in v24 + const bool deprecated_fee_fields_enabled{IsDeprecatedRPCEnabled("fees")}; + if (deprecated_fee_fields_enabled) { + info.pushKV("fee", ValueFromAmount(e.GetFee())); + info.pushKV("modifiedfee", ValueFromAmount(e.GetModifiedFee())); + } + info.pushKV("time", count_seconds(e.GetTime())); + info.pushKV("height", (int)e.GetHeight()); + info.pushKV("descendantcount", e.GetCountWithDescendants()); + info.pushKV("descendantsize", e.GetSizeWithDescendants()); + if (deprecated_fee_fields_enabled) { + info.pushKV("descendantfees", e.GetModFeesWithDescendants()); + } + info.pushKV("ancestorcount", e.GetCountWithAncestors()); + info.pushKV("ancestorsize", e.GetSizeWithAncestors()); + if (deprecated_fee_fields_enabled) { + info.pushKV("ancestorfees", e.GetModFeesWithAncestors()); + } + info.pushKV("wtxid", pool.vTxHashes[e.vTxHashesIdx].first.ToString()); + + UniValue fees(UniValue::VOBJ); + fees.pushKV("base", ValueFromAmount(e.GetFee())); + fees.pushKV("modified", ValueFromAmount(e.GetModifiedFee())); + fees.pushKV("ancestor", ValueFromAmount(e.GetModFeesWithAncestors())); + fees.pushKV("descendant", ValueFromAmount(e.GetModFeesWithDescendants())); + info.pushKV("fees", fees); + + const CTransaction& tx = e.GetTx(); + std::set<std::string> setDepends; + for (const CTxIn& txin : tx.vin) + { + if (pool.exists(GenTxid::Txid(txin.prevout.hash))) + setDepends.insert(txin.prevout.hash.ToString()); + } + + UniValue depends(UniValue::VARR); + for (const std::string& dep : setDepends) + { + depends.push_back(dep); + } + + info.pushKV("depends", depends); + + UniValue spent(UniValue::VARR); + const CTxMemPool::txiter& it = pool.mapTx.find(tx.GetHash()); + const CTxMemPoolEntry::Children& children = it->GetMemPoolChildrenConst(); + for (const CTxMemPoolEntry& child : children) { + spent.push_back(child.GetTx().GetHash().ToString()); + } + + info.pushKV("spentby", spent); + + // Add opt-in RBF status + bool rbfStatus = false; + RBFTransactionState rbfState = IsRBFOptIn(tx, pool); + if (rbfState == RBFTransactionState::UNKNOWN) { + throw JSONRPCError(RPC_MISC_ERROR, "Transaction is not in mempool"); + } else if (rbfState == RBFTransactionState::REPLACEABLE_BIP125) { + rbfStatus = true; + } + + info.pushKV("bip125-replaceable", rbfStatus); + info.pushKV("unbroadcast", pool.IsUnbroadcastTx(tx.GetHash())); +} + +UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose, bool include_mempool_sequence) +{ + if (verbose) { + if (include_mempool_sequence) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Verbose results cannot contain mempool sequence values."); + } + LOCK(pool.cs); + UniValue o(UniValue::VOBJ); + for (const CTxMemPoolEntry& e : pool.mapTx) { + const uint256& hash = e.GetTx().GetHash(); + UniValue info(UniValue::VOBJ); + entryToJSON(pool, info, e); + // Mempool has unique entries so there is no advantage in using + // UniValue::pushKV, which checks if the key already exists in O(N). + // UniValue::__pushKV is used instead which currently is O(1). + o.__pushKV(hash.ToString(), info); + } + return o; + } else { + uint64_t mempool_sequence; + std::vector<uint256> vtxid; + { + LOCK(pool.cs); + pool.queryHashes(vtxid); + mempool_sequence = pool.GetSequence(); + } + UniValue a(UniValue::VARR); + for (const uint256& hash : vtxid) + a.push_back(hash.ToString()); + + if (!include_mempool_sequence) { + return a; + } else { + UniValue o(UniValue::VOBJ); + o.pushKV("txids", a); + o.pushKV("mempool_sequence", mempool_sequence); + return o; + } + } +} + +RPCHelpMan getrawmempool() +{ + return RPCHelpMan{"getrawmempool", + "\nReturns all transaction ids in memory pool as a json array of string transaction ids.\n" + "\nHint: use getmempoolentry to fetch a specific transaction from the mempool.\n", + { + {"verbose", RPCArg::Type::BOOL, RPCArg::Default{false}, "True for a json object, false for array of transaction ids"}, + {"mempool_sequence", RPCArg::Type::BOOL, RPCArg::Default{false}, "If verbose=false, returns a json object with transaction list and mempool sequence number attached."}, + }, + { + RPCResult{"for verbose = false", + RPCResult::Type::ARR, "", "", + { + {RPCResult::Type::STR_HEX, "", "The transaction id"}, + }}, + RPCResult{"for verbose = true", + RPCResult::Type::OBJ_DYN, "", "", + { + {RPCResult::Type::OBJ, "transactionid", "", MempoolEntryDescription()}, + }}, + RPCResult{"for verbose = false and mempool_sequence = true", + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::ARR, "txids", "", + { + {RPCResult::Type::STR_HEX, "", "The transaction id"}, + }}, + {RPCResult::Type::NUM, "mempool_sequence", "The mempool sequence value."}, + }}, + }, + RPCExamples{ + HelpExampleCli("getrawmempool", "true") + + HelpExampleRpc("getrawmempool", "true") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + bool fVerbose = false; + if (!request.params[0].isNull()) + fVerbose = request.params[0].get_bool(); + + bool include_mempool_sequence = false; + if (!request.params[1].isNull()) { + include_mempool_sequence = request.params[1].get_bool(); + } + + return MempoolToJSON(EnsureAnyMemPool(request.context), fVerbose, include_mempool_sequence); +}, + }; +} + +RPCHelpMan getmempoolancestors() +{ + return RPCHelpMan{"getmempoolancestors", + "\nIf txid is in the mempool, returns all in-mempool ancestors.\n", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id (must be in mempool)"}, + {"verbose", RPCArg::Type::BOOL, RPCArg::Default{false}, "True for a json object, false for array of transaction ids"}, + }, + { + RPCResult{"for verbose = false", + RPCResult::Type::ARR, "", "", + {{RPCResult::Type::STR_HEX, "", "The transaction id of an in-mempool ancestor transaction"}}}, + RPCResult{"for verbose = true", + RPCResult::Type::OBJ_DYN, "", "", + { + {RPCResult::Type::OBJ, "transactionid", "", MempoolEntryDescription()}, + }}, + }, + RPCExamples{ + HelpExampleCli("getmempoolancestors", "\"mytxid\"") + + HelpExampleRpc("getmempoolancestors", "\"mytxid\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + bool fVerbose = false; + if (!request.params[1].isNull()) + fVerbose = request.params[1].get_bool(); + + uint256 hash = ParseHashV(request.params[0], "parameter 1"); + + const CTxMemPool& mempool = EnsureAnyMemPool(request.context); + LOCK(mempool.cs); + + CTxMemPool::txiter it = mempool.mapTx.find(hash); + if (it == mempool.mapTx.end()) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool"); + } + + CTxMemPool::setEntries setAncestors; + uint64_t noLimit = std::numeric_limits<uint64_t>::max(); + std::string dummy; + mempool.CalculateMemPoolAncestors(*it, setAncestors, noLimit, noLimit, noLimit, noLimit, dummy, false); + + if (!fVerbose) { + UniValue o(UniValue::VARR); + for (CTxMemPool::txiter ancestorIt : setAncestors) { + o.push_back(ancestorIt->GetTx().GetHash().ToString()); + } + return o; + } else { + UniValue o(UniValue::VOBJ); + for (CTxMemPool::txiter ancestorIt : setAncestors) { + const CTxMemPoolEntry &e = *ancestorIt; + const uint256& _hash = e.GetTx().GetHash(); + UniValue info(UniValue::VOBJ); + entryToJSON(mempool, info, e); + o.pushKV(_hash.ToString(), info); + } + return o; + } +}, + }; +} + +RPCHelpMan getmempooldescendants() +{ + return RPCHelpMan{"getmempooldescendants", + "\nIf txid is in the mempool, returns all in-mempool descendants.\n", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id (must be in mempool)"}, + {"verbose", RPCArg::Type::BOOL, RPCArg::Default{false}, "True for a json object, false for array of transaction ids"}, + }, + { + RPCResult{"for verbose = false", + RPCResult::Type::ARR, "", "", + {{RPCResult::Type::STR_HEX, "", "The transaction id of an in-mempool descendant transaction"}}}, + RPCResult{"for verbose = true", + RPCResult::Type::OBJ_DYN, "", "", + { + {RPCResult::Type::OBJ, "transactionid", "", MempoolEntryDescription()}, + }}, + }, + RPCExamples{ + HelpExampleCli("getmempooldescendants", "\"mytxid\"") + + HelpExampleRpc("getmempooldescendants", "\"mytxid\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + bool fVerbose = false; + if (!request.params[1].isNull()) + fVerbose = request.params[1].get_bool(); + + uint256 hash = ParseHashV(request.params[0], "parameter 1"); + + const CTxMemPool& mempool = EnsureAnyMemPool(request.context); + LOCK(mempool.cs); + + CTxMemPool::txiter it = mempool.mapTx.find(hash); + if (it == mempool.mapTx.end()) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool"); + } + + CTxMemPool::setEntries setDescendants; + mempool.CalculateDescendants(it, setDescendants); + // CTxMemPool::CalculateDescendants will include the given tx + setDescendants.erase(it); + + if (!fVerbose) { + UniValue o(UniValue::VARR); + for (CTxMemPool::txiter descendantIt : setDescendants) { + o.push_back(descendantIt->GetTx().GetHash().ToString()); + } + + return o; + } else { + UniValue o(UniValue::VOBJ); + for (CTxMemPool::txiter descendantIt : setDescendants) { + const CTxMemPoolEntry &e = *descendantIt; + const uint256& _hash = e.GetTx().GetHash(); + UniValue info(UniValue::VOBJ); + entryToJSON(mempool, info, e); + o.pushKV(_hash.ToString(), info); + } + return o; + } +}, + }; +} + +RPCHelpMan getmempoolentry() +{ + return RPCHelpMan{"getmempoolentry", + "\nReturns mempool data for given transaction\n", + { + {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id (must be in mempool)"}, + }, + RPCResult{ + RPCResult::Type::OBJ, "", "", MempoolEntryDescription()}, + RPCExamples{ + HelpExampleCli("getmempoolentry", "\"mytxid\"") + + HelpExampleRpc("getmempoolentry", "\"mytxid\"") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + uint256 hash = ParseHashV(request.params[0], "parameter 1"); + + const CTxMemPool& mempool = EnsureAnyMemPool(request.context); + LOCK(mempool.cs); + + CTxMemPool::txiter it = mempool.mapTx.find(hash); + if (it == mempool.mapTx.end()) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool"); + } + + const CTxMemPoolEntry &e = *it; + UniValue info(UniValue::VOBJ); + entryToJSON(mempool, info, e); + return info; +}, + }; +} + +UniValue MempoolInfoToJSON(const CTxMemPool& pool) +{ + // Make sure this call is atomic in the pool. + LOCK(pool.cs); + UniValue ret(UniValue::VOBJ); + ret.pushKV("loaded", pool.IsLoaded()); + ret.pushKV("size", (int64_t)pool.size()); + ret.pushKV("bytes", (int64_t)pool.GetTotalTxSize()); + ret.pushKV("usage", (int64_t)pool.DynamicMemoryUsage()); + ret.pushKV("total_fee", ValueFromAmount(pool.GetTotalFee())); + int64_t maxmempool{gArgs.GetIntArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000}; + ret.pushKV("maxmempool", maxmempool); + ret.pushKV("mempoolminfee", ValueFromAmount(std::max(pool.GetMinFee(maxmempool), ::minRelayTxFee).GetFeePerK())); + ret.pushKV("minrelaytxfee", ValueFromAmount(::minRelayTxFee.GetFeePerK())); + ret.pushKV("unbroadcastcount", uint64_t{pool.GetUnbroadcastTxs().size()}); + return ret; +} + +RPCHelpMan getmempoolinfo() +{ + return RPCHelpMan{"getmempoolinfo", + "\nReturns details on the active state of the TX memory pool.\n", + {}, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::BOOL, "loaded", "True if the mempool is fully loaded"}, + {RPCResult::Type::NUM, "size", "Current tx count"}, + {RPCResult::Type::NUM, "bytes", "Sum of all virtual transaction sizes as defined in BIP 141. Differs from actual serialized size because witness data is discounted"}, + {RPCResult::Type::NUM, "usage", "Total memory usage for the mempool"}, + {RPCResult::Type::STR_AMOUNT, "total_fee", "Total fees for the mempool in " + CURRENCY_UNIT + ", ignoring modified fees through prioritisetransaction"}, + {RPCResult::Type::NUM, "maxmempool", "Maximum memory usage for the mempool"}, + {RPCResult::Type::STR_AMOUNT, "mempoolminfee", "Minimum fee rate in " + CURRENCY_UNIT + "/kvB for tx to be accepted. Is the maximum of minrelaytxfee and minimum mempool fee"}, + {RPCResult::Type::STR_AMOUNT, "minrelaytxfee", "Current minimum relay fee for transactions"}, + {RPCResult::Type::NUM, "unbroadcastcount", "Current number of transactions that haven't passed initial broadcast yet"} + }}, + RPCExamples{ + HelpExampleCli("getmempoolinfo", "") + + HelpExampleRpc("getmempoolinfo", "") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + return MempoolInfoToJSON(EnsureAnyMemPool(request.context)); +}, + }; +} + +RPCHelpMan savemempool() +{ + return RPCHelpMan{"savemempool", + "\nDumps the mempool to disk. It will fail until the previous dump is fully loaded.\n", + {}, + RPCResult{ + RPCResult::Type::OBJ, "", "", + { + {RPCResult::Type::STR, "filename", "the directory and file where the mempool was saved"}, + }}, + RPCExamples{ + HelpExampleCli("savemempool", "") + + HelpExampleRpc("savemempool", "") + }, + [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue +{ + const ArgsManager& args{EnsureAnyArgsman(request.context)}; + const CTxMemPool& mempool = EnsureAnyMemPool(request.context); + + if (!mempool.IsLoaded()) { + throw JSONRPCError(RPC_MISC_ERROR, "The mempool was not loaded yet"); + } + + if (!DumpMempool(mempool)) { + throw JSONRPCError(RPC_MISC_ERROR, "Unable to dump mempool to disk"); + } + + UniValue ret(UniValue::VOBJ); + ret.pushKV("filename", fs::path((args.GetDataDirNet() / "mempool.dat")).u8string()); + + return ret; +}, + }; +} + +void RegisterMempoolRPCCommands(CRPCTable& t) +{ + static const CRPCCommand commands[]{ + // category actor (function) + // -------- ---------------- + {"blockchain", &getmempoolancestors}, + {"blockchain", &getmempooldescendants}, + {"blockchain", &getmempoolentry}, + {"blockchain", &getmempoolinfo}, + {"blockchain", &getrawmempool}, + {"blockchain", &savemempool}, + }; + for (const auto& c : commands) { + t.appendCommand(c.name, &c); + } +} |