xmr-btc-swap/xmr-btc/tests/harness/wallet/monero.rs

127 lines
4.0 KiB
Rust

use anyhow::Result;
use async_trait::async_trait;
use backoff::{backoff::Constant as ConstantBackoff, future::FutureOperation as _};
use monero_harness::rpc::wallet;
use std::{str::FromStr, time::Duration};
use xmr_btc::monero::{
Address, Amount, CreateWalletForOutput, InsufficientFunds, Network, PrivateKey, PrivateViewKey,
PublicKey, PublicViewKey, Transfer, TransferProof, TxHash, WatchForTransfer,
};
pub struct Wallet(pub wallet::Client);
impl Wallet {
/// Get the balance of the primary account.
pub async fn get_balance(&self) -> Result<Amount> {
let amount = self.0.get_balance(0).await?;
Ok(Amount::from_piconero(amount))
}
}
#[async_trait]
impl Transfer for Wallet {
async fn transfer(
&self,
public_spend_key: PublicKey,
public_view_key: PublicViewKey,
amount: Amount,
) -> Result<(TransferProof, Amount)> {
let destination_address =
Address::standard(Network::Mainnet, public_spend_key, public_view_key.into());
let res = self
.0
.transfer(0, amount.as_piconero(), &destination_address.to_string())
.await?;
let tx_hash = TxHash(res.tx_hash);
let tx_key = PrivateKey::from_str(&res.tx_key)?;
let fee = Amount::from_piconero(res.fee);
Ok((TransferProof::new(tx_hash, tx_key), fee))
}
}
#[async_trait]
impl CreateWalletForOutput for Wallet {
async fn create_and_load_wallet_for_output(
&self,
private_spend_key: PrivateKey,
private_view_key: PrivateViewKey,
) -> Result<()> {
let public_spend_key = PublicKey::from_private_key(&private_spend_key);
let public_view_key = PublicKey::from_private_key(&private_view_key.into());
let address = Address::standard(Network::Mainnet, public_spend_key, public_view_key);
let _ = self
.0
.generate_from_keys(
&address.to_string(),
&private_spend_key.to_string(),
&PrivateKey::from(private_view_key).to_string(),
)
.await?;
Ok(())
}
}
#[async_trait]
impl WatchForTransfer for Wallet {
async fn watch_for_transfer(
&self,
public_spend_key: PublicKey,
public_view_key: PublicViewKey,
transfer_proof: TransferProof,
expected_amount: Amount,
expected_confirmations: u32,
) -> Result<(), InsufficientFunds> {
enum Error {
TxNotFound,
InsufficientConfirmations,
InsufficientFunds { expected: Amount, actual: Amount },
}
let address = Address::standard(Network::Mainnet, public_spend_key, public_view_key.into());
let res = (|| async {
// NOTE: Currently, this is conflating IO errors with the transaction not being
// in the blockchain yet, or not having enough confirmations on it. All these
// errors warrant a retry, but the strategy should probably differ per case
let proof = self
.0
.check_tx_key(
&String::from(transfer_proof.tx_hash()),
&transfer_proof.tx_key().to_string(),
&address.to_string(),
)
.await
.map_err(|_| backoff::Error::Transient(Error::TxNotFound))?;
if proof.received != expected_amount.as_piconero() {
return Err(backoff::Error::Permanent(Error::InsufficientFunds {
expected: expected_amount,
actual: Amount::from_piconero(proof.received),
}));
}
if proof.confirmations < expected_confirmations {
return Err(backoff::Error::Transient(Error::InsufficientConfirmations));
}
Ok(proof)
})
.retry(ConstantBackoff::new(Duration::from_secs(1)))
.await;
if let Err(Error::InsufficientFunds { expected, actual }) = res {
return Err(InsufficientFunds { expected, actual });
};
Ok(())
}
}