xmr-btc-swap/xmr-btc/tests/harness/wallet/monero.rs
2020-10-15 18:34:13 +11:00

153 lines
4.8 KiB
Rust

use anyhow::Result;
use async_trait::async_trait;
use backoff::{future::FutureOperation as _, ExponentialBackoff};
use monero::{Address, Network, PrivateKey};
use monero_harness::Monero;
use std::str::FromStr;
use xmr_btc::monero::{
Amount, CreateWalletForOutput, InsufficientFunds, PrivateViewKey, PublicKey, PublicViewKey,
Transfer, TransferProof, TxHash, WatchForTransfer,
};
#[derive(Debug)]
pub struct AliceWallet<'c>(pub &'c Monero<'c>);
#[async_trait]
impl Transfer for AliceWallet<'_> {
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_from_alice(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 AliceWallet<'_> {
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
.alice_wallet_rpc_client()
.generate_from_keys(
&address.to_string(),
&private_spend_key.to_string(),
&PrivateKey::from(private_view_key).to_string(),
)
.await?;
Ok(())
}
}
#[derive(Debug)]
pub struct BobWallet<'c>(pub &'c Monero<'c>);
#[async_trait]
impl WatchForTransfer for BobWallet<'_> {
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 wallet = self.0.bob_wallet_rpc_client();
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 = wallet
.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(ExponentialBackoff {
max_elapsed_time: None,
..Default::default()
})
.await;
if let Err(Error::InsufficientFunds { expected, actual }) = res {
return Err(InsufficientFunds { expected, actual });
};
Ok(())
}
}
#[async_trait]
impl CreateWalletForOutput for BobWallet<'_> {
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
.bob_wallet_rpc_client()
.generate_from_keys(
&address.to_string(),
&private_spend_key.to_string(),
&PrivateKey::from(private_view_key).to_string(),
)
.await?;
Ok(())
}
}