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wallet2_api: implement estimateTransactionFee

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This commit is contained in:
xiphon 2020-01-22 16:30:47 +00:00
parent 51873fec04
commit dab604e010
5 changed files with 45 additions and 14 deletions
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20
src/wallet/api/wallet.cpp
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@ -1671,6 +1671,26 @@ void WalletImpl::disposeTransaction(PendingTransaction *t)
delete t;
}
uint64_t WalletImpl::estimateTransactionFee(const std::vector<std::pair<std::string, uint64_t>> &destinations,
PendingTransaction::Priority priority) const
{
const size_t pubkey_size = 33;
const size_t encrypted_paymentid_size = 11;
const size_t extra_size = pubkey_size + encrypted_paymentid_size;
return m_wallet->estimate_fee(
m_wallet->use_fork_rules(HF_VERSION_PER_BYTE_FEE, 0),
m_wallet->use_fork_rules(4, 0),
1,
m_wallet->get_min_ring_size() - 1,
destinations.size() + 1,
extra_size,
m_wallet->use_fork_rules(8, 0),
m_wallet->get_base_fee(),
m_wallet->get_fee_multiplier(m_wallet->adjust_priority(static_cast<uint32_t>(priority))),
m_wallet->get_fee_quantization_mask());
}
TransactionHistory *WalletImpl::history()
{
return m_history.get();

2
src/wallet/api/wallet.h
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@ -166,6 +166,8 @@ public:
bool importKeyImages(const std::string &filename) override;
virtual void disposeTransaction(PendingTransaction * t) override;
virtual uint64_t estimateTransactionFee(const std::vector<std::pair<std::string, uint64_t>> &destinations,
PendingTransaction::Priority priority) const override;
virtual TransactionHistory * history() override;
virtual AddressBook * addressBook() override;
virtual Subaddress * subaddress() override;

8
src/wallet/api/wallet2_api.h
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@ -879,6 +879,14 @@ struct Wallet
*/
virtual void disposeTransaction(PendingTransaction * t) = 0;
/*!
* \brief Estimates transaction fee.
* \param destinations Vector consisting of <address, amount> pairs.
* \return Estimated fee.
*/
virtual uint64_t estimateTransactionFee(const std::vector<std::pair<std::string, uint64_t>> &destinations,
PendingTransaction::Priority priority) const = 0;
/*!
* \brief exportKeyImages - exports key images to file
* \param filename

28
src/wallet/wallet2.cpp
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@ -879,20 +879,6 @@ uint8_t get_bulletproof_fork()
return 8;
}
uint64_t estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask)
{
if (use_per_byte_fee)
{
const size_t estimated_tx_weight = estimate_tx_weight(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof);
return calculate_fee_from_weight(base_fee, estimated_tx_weight, fee_multiplier, fee_quantization_mask);
}
else
{
const size_t estimated_tx_size = estimate_tx_size(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof);
return calculate_fee(base_fee, estimated_tx_size, fee_multiplier);
}
}
uint64_t calculate_fee(bool use_per_byte_fee, const cryptonote::transaction &tx, size_t blob_size, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask)
{
if (use_per_byte_fee)
@ -7098,6 +7084,20 @@ bool wallet2::sign_multisig_tx_from_file(const std::string &filename, std::vecto
return sign_multisig_tx_to_file(exported_txs, filename, txids);
}
//----------------------------------------------------------------------------------------------------
uint64_t wallet2::estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask) const
{
if (use_per_byte_fee)
{
const size_t estimated_tx_weight = estimate_tx_weight(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof);
return calculate_fee_from_weight(base_fee, estimated_tx_weight, fee_multiplier, fee_quantization_mask);
}
else
{
const size_t estimated_tx_size = estimate_tx_size(use_rct, n_inputs, mixin, n_outputs, extra_size, bulletproof);
return calculate_fee(base_fee, estimated_tx_size, fee_multiplier);
}
}
uint64_t wallet2::get_fee_multiplier(uint32_t priority, int fee_algorithm)
{
static const struct

1
src/wallet/wallet2.h
View File

@ -1243,6 +1243,7 @@ private:
std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(const std::vector<std::pair<double, double>> &fee_levels);
std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(uint64_t min_tx_weight, uint64_t max_tx_weight, const std::vector<uint64_t> &fees);
uint64_t estimate_fee(bool use_per_byte_fee, bool use_rct, int n_inputs, int mixin, int n_outputs, size_t extra_size, bool bulletproof, uint64_t base_fee, uint64_t fee_multiplier, uint64_t fee_quantization_mask) const;
uint64_t get_fee_multiplier(uint32_t priority, int fee_algorithm = -1);
uint64_t get_base_fee();
uint64_t get_fee_quantization_mask();