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Merge pull request #67 from bitcoindevkit/allow-passing-a-fee-rate-when-creating-a-transaction

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Add optional fee rate to a transaction
This commit is contained in:
Sudarsan Balaji 2021-11-04 23:30:11 +05:30 committed by GitHub
commit 202f6c71e6
2 changed files with 11 additions and 3 deletions
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2
src/bdk.udl
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@ -149,7 +149,7 @@ interface OnlineWallet {
interface PartiallySignedBitcoinTransaction {
[Throws=BdkError]
constructor([ByRef] OnlineWallet wallet, string recipient, u64 amount);
constructor([ByRef] OnlineWallet wallet, string recipient, u64 amount, float? fee_rate);
};
dictionary ExtendedKeyInfo {

12
src/lib.rs
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@ -12,7 +12,7 @@ use bdk::keys::bip39::{Language, Mnemonic, MnemonicType};
use bdk::keys::{DerivableKey, ExtendedKey, GeneratableKey, GeneratedKey};
use bdk::miniscript::BareCtx;
use bdk::wallet::AddressIndex;
use bdk::{ConfirmationTime, Error, SignOptions, Wallet};
use bdk::{ConfirmationTime, Error, FeeRate, SignOptions, Wallet};
use std::convert::TryFrom;
use std::str::FromStr;
use std::sync::{Mutex, MutexGuard};
@ -178,13 +178,21 @@ struct PartiallySignedBitcoinTransaction {
}
impl PartiallySignedBitcoinTransaction {
fn new(online_wallet: &OnlineWallet, recipient: String, amount: u64) -> Result<Self, Error> {
fn new(
online_wallet: &OnlineWallet,
recipient: String,
amount: u64,
fee_rate: Option<f32>, // satoshis per vbyte
) -> Result<Self, Error> {
let wallet = online_wallet.get_wallet();
match Address::from_str(&recipient) {
Ok(address) => {
let (psbt, _) = {
let mut builder = wallet.build_tx();
builder.add_recipient(address.script_pubkey(), amount);
if let Some(sat_per_vb) = fee_rate {
builder.fee_rate(FeeRate::from_sat_per_vb(sat_per_vb));
}
builder.finish()?
};
Ok(PartiallySignedBitcoinTransaction {