MPTokenIssuanceID.cpp

#include <xrpld/rpc/MPTokenIssuanceID.h>
 
#include <xrpl/basics/base_uint.h>
#include <xrpl/json/json_value.h>
#include <xrpl/protocol/Indexes.h>
#include <xrpl/protocol/LedgerFormats.h>
#include <xrpl/protocol/SField.h>
#include <xrpl/protocol/STObject.h>
#include <xrpl/protocol/STTx.h>
#include <xrpl/protocol/TER.h>
#include <xrpl/protocol/TxFormats.h>
#include <xrpl/protocol/TxMeta.h>
#include <xrpl/protocol/UintTypes.h>
#include <xrpl/protocol/jss.h>
 
#include <memory>
#include <optional>
 
namespace xrpl::RPC {
 
bool
canHaveMPTokenIssuanceID(
    std::shared_ptr<STTx const> const& serializedTx,
    TxMeta const& transactionMeta)
{
    if (!serializedTx)
        return false;
 
    TxType const tt = serializedTx->getTxnType();
    if (tt != ttMPTOKEN_ISSUANCE_CREATE)
        return false;
 
    // if the transaction failed nothing could have been delivered.
    if (!isTesSuccess(transactionMeta.getResultTER()))
        return false;
 
    return true;
}
 
std::optional<MPTID>
getIDFromCreatedIssuance(TxMeta const& transactionMeta)
{
    for (STObject const& node : transactionMeta.getNodes())
    {
        if (node.getFieldU16(sfLedgerEntryType) != ltMPTOKEN_ISSUANCE ||
            node.getFName() != sfCreatedNode)
            continue;
 
        auto const& mptNode = node.peekAtField(sfNewFields).downcast<STObject>();
        return makeMptID(mptNode.getFieldU32(sfSequence), mptNode.getAccountID(sfIssuer));
    }
 
    return std::nullopt;
}
 
void
insertMPTokenIssuanceID(
    json::Value& response,
    std::shared_ptr<STTx const> const& transaction,
    TxMeta const& transactionMeta)
{
    if (!canHaveMPTokenIssuanceID(transaction, transactionMeta))
        return;
 
    std::optional<MPTID> result = getIDFromCreatedIssuance(transactionMeta);
    if (result)
        response[jss::mpt_issuance_id] = to_string(result.value());
}
 
}  // namespace xrpl::RPC