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Merge 3ba6dd6f4b into merged_master (Bitcoin PR bitcoin/bitcoin#24408)

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James Dorfman 2024-09-06 16:21:04 +00:00
commit bf065f9c8a
7 changed files with 200 additions and 0 deletions
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84
src/rpc/mempool.cpp
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@ -597,6 +597,89 @@ static RPCHelpMan getmempoolentry()
};
}
static RPCHelpMan gettxspendingprevout()
{
return RPCHelpMan{"gettxspendingprevout",
"Scans the mempool to find transactions spending any of the given outputs",
{
{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The transaction outputs that we want to check, and within each, the txid (string) vout (numeric).",
{
{"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
{"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"},
},
},
},
},
},
RPCResult{
RPCResult::Type::ARR, "", "",
{
{RPCResult::Type::OBJ, "", "",
{
{RPCResult::Type::STR_HEX, "txid", "the transaction id of the checked output"},
{RPCResult::Type::NUM, "vout", "the vout value of the checked output"},
{RPCResult::Type::STR_HEX, "spendingtxid", /*optional=*/true, "the transaction id of the mempool transaction spending this output (omitted if unspent)"},
}},
}
},
RPCExamples{
HelpExampleCli("gettxspendingprevout", "\"[{\\\"txid\\\":\\\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\\\",\\\"vout\\\":3}]\"")
+ HelpExampleRpc("gettxspendingprevout", "\"[{\\\"txid\\\":\\\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\\\",\\\"vout\\\":3}]\"")
},
[&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
RPCTypeCheckArgument(request.params[0], UniValue::VARR);
const UniValue& output_params = request.params[0];
if (output_params.empty()) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, outputs are missing");
}
std::vector<COutPoint> prevouts;
prevouts.reserve(output_params.size());
for (unsigned int idx = 0; idx < output_params.size(); idx++) {
const UniValue& o = output_params[idx].get_obj();
RPCTypeCheckObj(o,
{
{"txid", UniValueType(UniValue::VSTR)},
{"vout", UniValueType(UniValue::VNUM)},
}, /*fAllowNull=*/false, /*fStrict=*/true);
const uint256 txid(ParseHashO(o, "txid"));
const int nOutput = find_value(o, "vout").get_int();
if (nOutput < 0) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, vout cannot be negative");
}
prevouts.emplace_back(txid, nOutput);
}
const CTxMemPool& mempool = EnsureAnyMemPool(request.context);
LOCK(mempool.cs);
UniValue result{UniValue::VARR};
for (const COutPoint& prevout : prevouts) {
UniValue o(UniValue::VOBJ);
o.pushKV("txid", prevout.hash.ToString());
o.pushKV("vout", (uint64_t)prevout.n);
const CTransaction* spendingTx = mempool.GetConflictTx(prevout);
if (spendingTx != nullptr) {
o.pushKV("spendingtxid", spendingTx->GetHash().ToString());
}
result.push_back(o);
}
return result;
},
};
}
UniValue MempoolInfoToJSON(const CTxMemPool& pool)
{
// Make sure this call is atomic in the pool.
@ -687,6 +770,7 @@ void RegisterMempoolRPCCommands(CRPCTable& t)
{"blockchain", &getmempoolancestors},
{"blockchain", &getmempooldescendants},
{"blockchain", &getmempoolentry},
{"blockchain", &gettxspendingprevout},
{"blockchain", &getmempoolinfo},
{"blockchain", &getrawmempool},
{"blockchain", &savemempool},