rpc: Move mempool RPCs to new file

Can be reviewed with:
--color-moved=dimmed-zebra --color-moved-ws=ignore-all-space
This commit is contained in:
MarcoFalke 2022-03-11 17:51:36 +01:00
parent a81717443f
commit fa2a5f301a
No known key found for this signature in database
GPG key ID: CE2B75697E69A548
7 changed files with 489 additions and 457 deletions

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@ -209,6 +209,7 @@ BITCOIN_CORE_H = \
reverse_iterator.h \
rpc/blockchain.h \
rpc/client.h \
rpc/mempool.h \
rpc/mining.h \
rpc/protocol.h \
rpc/rawtransaction_util.h \
@ -370,6 +371,7 @@ libbitcoin_node_a_SOURCES = \
pow.cpp \
rest.cpp \
rpc/blockchain.cpp \
rpc/mempool.cpp \
rpc/mining.cpp \
rpc/misc.cpp \
rpc/net.cpp \

View file

@ -3,7 +3,7 @@
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <bench/bench.h>
#include <rpc/blockchain.h>
#include <rpc/mempool.h>
#include <txmempool.h>
#include <univalue.h>

View file

@ -15,6 +15,7 @@
#include <primitives/block.h>
#include <primitives/transaction.h>
#include <rpc/blockchain.h>
#include <rpc/mempool.h>
#include <rpc/protocol.h>
#include <rpc/server.h>
#include <rpc/server_util.h>

View file

@ -26,10 +26,6 @@
#include <node/coinstats.h>
#include <node/context.h>
#include <node/utxo_snapshot.h>
#include <policy/feerate.h>
#include <policy/fees.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <primitives/transaction.h>
#include <rpc/server.h>
#include <rpc/server_util.h>
@ -40,8 +36,8 @@
#include <txdb.h>
#include <txmempool.h>
#include <undo.h>
#include <univalue.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <util/translation.h>
#include <validation.h>
#include <validationinterface.h>
@ -50,8 +46,6 @@
#include <stdint.h>
#include <univalue.h>
#include <condition_variable>
#include <memory>
#include <mutex>
@ -426,366 +420,6 @@ static RPCHelpMan getdifficulty()
};
}
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;
}
}
}
static 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);
},
};
}
static 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;
}
},
};
}
static 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;
}
},
};
}
static 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;
},
};
}
static RPCHelpMan getblockfrompeer()
{
return RPCHelpMan{
@ -1809,53 +1443,6 @@ static RPCHelpMan getchaintips()
};
}
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()));
size_t maxmempool = gArgs.GetIntArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
ret.pushKV("maxmempool", (int64_t) 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;
}
static 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));
},
};
}
static RPCHelpMan preciousblock()
{
return RPCHelpMan{"preciousblock",
@ -2352,41 +1939,6 @@ static RPCHelpMan getblockstats()
};
}
static 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;
},
};
}
namespace {
//! Search for a given set of pubkey scripts
bool FindScriptPubKey(std::atomic<int>& scan_progress, const std::atomic<bool>& should_abort, int64_t& count, CCoinsViewCursor* cursor, const std::set<CScript>& needles, std::map<COutPoint, Coin>& out_results, std::function<void()>& interruption_point)
@ -2825,6 +2377,14 @@ UniValue CreateUTXOSnapshot(
return result;
}
RPCHelpMan getmempoolancestors();
RPCHelpMan getmempooldescendants();
RPCHelpMan getmempoolentry();
RPCHelpMan getmempoolinfo();
RPCHelpMan getrawmempool();
RPCHelpMan savemempool();
void RegisterBlockchainRPCCommands(CRPCTable &t)
{
// clang-format off

View file

@ -20,7 +20,6 @@ extern RecursiveMutex cs_main;
class CBlock;
class CBlockIndex;
class CChainState;
class CTxMemPool;
class UniValue;
namespace node {
struct NodeContext;
@ -42,12 +41,6 @@ void RPCNotifyBlockChange(const CBlockIndex*);
/** Block description to JSON */
UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, TxVerbosity verbosity) LOCKS_EXCLUDED(cs_main);
/** Mempool information to JSON */
UniValue MempoolInfoToJSON(const CTxMemPool& pool);
/** Mempool to JSON */
UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose = false, bool include_mempool_sequence = false);
/** Block header to JSON */
UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex) LOCKS_EXCLUDED(cs_main);

459
src/rpc/mempool.cpp Normal file
View file

@ -0,0 +1,459 @@
// 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()));
size_t maxmempool = gArgs.GetIntArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
ret.pushKV("maxmempool", (int64_t) 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;
},
};
}

17
src/rpc/mempool.h Normal file
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@ -0,0 +1,17 @@
// Copyright (c) 2017-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_RPC_MEMPOOL_H
#define BITCOIN_RPC_MEMPOOL_H
class CTxMemPool;
class UniValue;
/** Mempool information to JSON */
UniValue MempoolInfoToJSON(const CTxMemPool& pool);
/** Mempool to JSON */
UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose = false, bool include_mempool_sequence = false);
#endif // BITCOIN_RPC_MEMPOOL_H