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Use Alice swap factory in production

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This commit is contained in:
Daniel Karzel 2021-01-18 21:24:13 +11:00
parent 67e925fe1f
commit 3398ef8236
10 changed files with 259 additions and 291 deletions
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6
swap/src/lib.rs
View file

@ -56,6 +56,12 @@ pub struct SwapAmounts {
pub xmr: monero::Amount,
}
#[derive(Debug, Clone)]
pub struct StartingBalances {
pub xmr: monero::Amount,
pub btc: bitcoin::Amount,
}
// TODO: Display in XMR and BTC (not picos and sats).
impl Display for SwapAmounts {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {

142
swap/src/main.rs
View file

@ -26,10 +26,10 @@ use swap::{
database::{Database, Swap},
monero, network,
network::transport::build,
protocol::{alice, alice::AliceState, bob, bob::BobState},
protocol::{alice, bob, bob::BobState},
seed::Seed,
trace::init_tracing,
SwapAmounts,
StartingBalances, SwapAmounts,
};
use tracing::{info, log::LevelFilter};
use uuid::Uuid;
@ -51,8 +51,9 @@ async fn main() -> Result<()> {
opt.data_dir
);
let data_dir = std::path::Path::new(opt.data_dir.as_str()).to_path_buf();
let db =
Database::open(data_dir.join("database").as_path()).context("Could not open database")?;
let db_path = data_dir.join("database");
let db = Database::open(db_path.as_path()).context("Could not open database")?;
let seed = swap::config::seed::Seed::from_file_or_generate(&data_dir)
.expect("Could not retrieve/initialize seed")
@ -67,7 +68,12 @@ async fn main() -> Result<()> {
send_monero,
receive_bitcoin,
} => {
let (bitcoin_wallet, monero_wallet) = setup_wallets(
let swap_amounts = SwapAmounts {
xmr: send_monero,
btc: receive_bitcoin,
};
let (bitcoin_wallet, monero_wallet, starting_balances) = setup_wallets(
bitcoind_url,
bitcoin_wallet_name.as_str(),
monero_wallet_rpc_url,
@ -75,50 +81,23 @@ async fn main() -> Result<()> {
)
.await?;
let amounts = SwapAmounts {
btc: receive_bitcoin,
xmr: send_monero,
};
let alice_state = {
let rng = &mut OsRng;
let a = bitcoin::SecretKey::new_random(rng);
let s_a = cross_curve_dleq::Scalar::random(rng);
let v_a = monero::PrivateViewKey::new_random(rng);
let redeem_address = bitcoin_wallet.as_ref().new_address().await?;
let punish_address = redeem_address.clone();
let state0 = alice::state::State0::new(
a,
s_a,
v_a,
amounts.btc,
amounts.xmr,
config.bitcoin_cancel_timelock,
config.bitcoin_punish_timelock,
redeem_address,
punish_address,
);
AliceState::Started { amounts, state0 }
};
let swap_id = Uuid::new_v4();
info!(
"Swap sending {} and receiving {} started with ID {}",
send_monero, receive_bitcoin, swap_id
);
alice_swap(
let alice_factory = alice::AliceSwapFactory::new(
seed,
config,
swap_id,
alice_state,
listen_addr,
bitcoin_wallet,
monero_wallet,
config,
db,
seed,
starting_balances,
db_path,
listen_addr,
)
.await?;
.await;
let (swap, mut event_loop) = alice_factory.new_swap_as_alice(swap_amounts).await?;
tokio::spawn(async move { event_loop.run().await });
alice::run(swap).await?;
}
Command::BuyXmr {
alice_peer_id,
@ -129,7 +108,7 @@ async fn main() -> Result<()> {
send_bitcoin,
receive_monero,
} => {
let (bitcoin_wallet, monero_wallet) = setup_wallets(
let (bitcoin_wallet, monero_wallet, _) = setup_wallets(
bitcoind_url,
bitcoin_wallet_name.as_str(),
monero_wallet_rpc_url,
@ -192,30 +171,29 @@ async fn main() -> Result<()> {
monero_wallet_rpc_url,
listen_addr,
}) => {
let db_state = if let Swap::Alice(db_state) = db.get_state(swap_id)? {
db_state
} else {
bail!("Swap {} is not sell xmr.", swap_id)
};
let (bitcoin_wallet, monero_wallet) = setup_wallets(
let (bitcoin_wallet, monero_wallet, starting_balances) = setup_wallets(
bitcoind_url,
bitcoin_wallet_name.as_str(),
monero_wallet_rpc_url,
config,
)
.await?;
alice_swap(
let alice_factory = alice::AliceSwapFactory::new(
seed,
config,
swap_id,
db_state.into(),
listen_addr,
bitcoin_wallet,
monero_wallet,
config,
db,
seed,
starting_balances,
db_path,
listen_addr,
)
.await?;
.await;
let (swap, mut event_loop) = alice_factory.recover_alice_from_db().await?;
tokio::spawn(async move { event_loop.run().await });
alice::run(swap).await?;
}
Command::Resume(Resume::BuyXmr {
swap_id,
@ -231,7 +209,7 @@ async fn main() -> Result<()> {
bail!("Swap {} is not buy xmr.", swap_id)
};
let (bitcoin_wallet, monero_wallet) = setup_wallets(
let (bitcoin_wallet, monero_wallet, _) = setup_wallets(
bitcoind_url,
bitcoin_wallet_name.as_str(),
monero_wallet_rpc_url,
@ -260,7 +238,11 @@ async fn setup_wallets(
bitcoin_wallet_name: &str,
monero_wallet_rpc_url: url::Url,
config: Config,
) -> Result<(Arc<swap::bitcoin::Wallet>, Arc<swap::monero::Wallet>)> {
) -> Result<(
Arc<swap::bitcoin::Wallet>,
Arc<swap::monero::Wallet>,
StartingBalances,
)> {
let bitcoin_wallet =
swap::bitcoin::Wallet::new(bitcoin_wallet_name, bitcoind_url, config.bitcoin_network)
.await?;
@ -279,44 +261,12 @@ async fn setup_wallets(
);
let monero_wallet = Arc::new(monero_wallet);
Ok((bitcoin_wallet, monero_wallet))
}
#[allow(clippy::too_many_arguments)]
async fn alice_swap(
swap_id: Uuid,
state: AliceState,
listen_addr: Multiaddr,
bitcoin_wallet: Arc<swap::bitcoin::Wallet>,
monero_wallet: Arc<swap::monero::Wallet>,
config: Config,
db: Database,
seed: Seed,
) -> Result<AliceState> {
let identity = network::Seed::new(seed).derive_libp2p_identity();
let peer_id = identity.public().into_peer_id();
let alice_behaviour = alice::Behaviour::default();
info!("Own Peer-ID: {}", peer_id);
let alice_transport = build(identity)?;
let (mut event_loop, handle) =
alice::event_loop::EventLoop::new(alice_transport, alice_behaviour, listen_addr, peer_id)?;
let swap = alice::Swap {
state,
event_loop_handle: handle,
bitcoin_wallet,
monero_wallet,
config,
swap_id,
db,
let starting_balances = StartingBalances {
btc: bitcoin_balance,
xmr: monero_balance,
};
let swap = alice::swap::run(swap);
tokio::spawn(async move { event_loop.run().await });
swap.await
Ok((bitcoin_wallet, monero_wallet, starting_balances))
}
#[allow(clippy::too_many_arguments)]

168
swap/src/protocol/alice.rs
View file

@ -1,16 +1,18 @@
//! Run an XMR/BTC swap in the role of Alice.
//! Alice holds XMR and wishes receive BTC.
use anyhow::Result;
use libp2p::{request_response::ResponseChannel, NetworkBehaviour, PeerId};
use tracing::{debug, info};
use crate::{
bitcoin, monero,
bitcoin, database, monero,
network::{
peer_tracker::{self, PeerTracker},
request_response::AliceToBob,
Seed as NetworkSeed,
},
protocol::bob,
SwapAmounts,
StartingBalances, SwapAmounts,
};
pub use self::{
@ -22,8 +24,10 @@ pub use self::{
state::*,
swap::{run, run_until},
};
use crate::{config::Config, database::Database};
use std::sync::Arc;
use crate::{config::Config, database::Database, network::transport::build, seed::Seed};
use libp2p::{core::Multiaddr, identity::Keypair};
use rand::rngs::OsRng;
use std::{path::PathBuf, sync::Arc};
use uuid::Uuid;
mod amounts;
@ -46,6 +50,162 @@ pub struct Swap {
pub db: Database,
}
pub struct AliceSwapFactory {
listen_address: Multiaddr,
identity: Keypair,
peer_id: PeerId,
db_path: PathBuf,
swap_id: Uuid,
pub bitcoin_wallet: Arc<bitcoin::Wallet>,
pub monero_wallet: Arc<monero::Wallet>,
config: Config,
pub starting_balances: StartingBalances,
}
impl AliceSwapFactory {
#[allow(clippy::too_many_arguments)]
pub async fn new(
seed: Seed,
config: Config,
swap_id: Uuid,
bitcoin_wallet: Arc<bitcoin::Wallet>,
monero_wallet: Arc<monero::Wallet>,
starting_balances: StartingBalances,
db_path: PathBuf,
listen_address: Multiaddr,
) -> Self {
let network_seed = NetworkSeed::new(seed);
let identity = network_seed.derive_libp2p_identity();
let peer_id = PeerId::from(identity.public());
Self {
listen_address,
identity,
peer_id,
db_path,
swap_id,
bitcoin_wallet,
monero_wallet,
config,
starting_balances,
}
}
pub async fn new_swap_as_alice(&self, swap_amounts: SwapAmounts) -> Result<(Swap, EventLoop)> {
let initial_state = init_alice_state(
swap_amounts.btc,
swap_amounts.xmr,
self.bitcoin_wallet.clone(),
self.config,
)
.await?;
let (event_loop, event_loop_handle) = init_alice_event_loop(
self.listen_address.clone(),
self.identity.clone(),
self.peer_id.clone(),
)?;
let db = Database::open(self.db_path.as_path())?;
Ok((
Swap {
event_loop_handle,
bitcoin_wallet: self.bitcoin_wallet.clone(),
monero_wallet: self.monero_wallet.clone(),
config: self.config,
db,
state: initial_state,
swap_id: self.swap_id,
},
event_loop,
))
}
pub async fn recover_alice_from_db(&self) -> Result<(Swap, EventLoop)> {
// reopen the existing database
let db = Database::open(self.db_path.clone().as_path())?;
let resume_state = if let database::Swap::Alice(state) = db.get_state(self.swap_id)? {
state.into()
} else {
unreachable!()
};
let (event_loop, event_loop_handle) = init_alice_event_loop(
self.listen_address.clone(),
self.identity.clone(),
self.peer_id.clone(),
)?;
Ok((
Swap {
state: resume_state,
event_loop_handle,
bitcoin_wallet: self.bitcoin_wallet.clone(),
monero_wallet: self.monero_wallet.clone(),
config: self.config,
swap_id: self.swap_id,
db,
},
event_loop,
))
}
pub fn peer_id(&self) -> PeerId {
self.peer_id.clone()
}
pub fn listen_address(&self) -> Multiaddr {
self.listen_address.clone()
}
}
async fn init_alice_state(
btc_to_swap: bitcoin::Amount,
xmr_to_swap: monero::Amount,
alice_btc_wallet: Arc<bitcoin::Wallet>,
config: Config,
) -> Result<AliceState> {
let rng = &mut OsRng;
let amounts = SwapAmounts {
btc: btc_to_swap,
xmr: xmr_to_swap,
};
let a = bitcoin::SecretKey::new_random(rng);
let s_a = cross_curve_dleq::Scalar::random(rng);
let v_a = monero::PrivateViewKey::new_random(rng);
let redeem_address = alice_btc_wallet.as_ref().new_address().await?;
let punish_address = redeem_address.clone();
let state0 = State0::new(
a,
s_a,
v_a,
amounts.btc,
amounts.xmr,
config.bitcoin_cancel_timelock,
config.bitcoin_punish_timelock,
redeem_address,
punish_address,
);
Ok(AliceState::Started { amounts, state0 })
}
fn init_alice_event_loop(
listen: Multiaddr,
identity: Keypair,
peer_id: PeerId,
) -> Result<(EventLoop, EventLoopHandle)> {
let alice_behaviour = Behaviour::default();
let alice_transport = build(identity)?;
EventLoop::new(alice_transport, alice_behaviour, listen, peer_id)
}
pub type Swarm = libp2p::Swarm<Behaviour>;
#[derive(Debug)]