Start wallet sync as part of wallet actor

daemon/src/lib.rs

@@ -55,7 +55,6 @@ pub mod tokio_ext;
 pub mod try_continue;
 pub mod tx;
 pub mod wallet;
-pub mod wallet_sync;
 pub mod wire;
 
 // Certain operations (e.g. contract setup) take long time in debug mode,
@@ -115,7 +114,6 @@ where
         + xtra::Handler<maker_inc_connections::ConfirmOrder>
         + xtra::Handler<Stopping<setup_maker::Actor>>,
     W: xtra::Handler<wallet::BuildPartyParams>
-        + xtra::Handler<wallet::Sync>
         + xtra::Handler<wallet::Sign>
         + xtra::Handler<wallet::TryBroadcastTransaction>,
 {
@@ -222,7 +220,6 @@ where
         + xtra::Handler<monitor::CollaborativeSettlement>
         + xtra::Handler<oracle::Attestation>,
     W: xtra::Handler<wallet::BuildPartyParams>
-        + xtra::Handler<wallet::Sync>
         + xtra::Handler<wallet::Sign>
         + xtra::Handler<wallet::TryBroadcastTransaction>,
 {

daemon/src/maker.rs

@@ -8,7 +8,7 @@ use daemon::model::cfd::Role;
 use daemon::seed::Seed;
 use daemon::{
     bitmex_price_feed, db, housekeeping, logger, maker_inc_connections, monitor, oracle,
-    projection, wallet, wallet_sync, MakerActorSystem, Tasks, HEARTBEAT_INTERVAL, N_PAYOUTS,
+    projection, wallet, MakerActorSystem, Tasks, HEARTBEAT_INTERVAL, N_PAYOUTS,
     SETTLEMENT_INTERVAL,
 };
 use sqlx::sqlite::SqliteConnectOptions;
@@ -17,7 +17,6 @@ use std::net::SocketAddr;
 use std::path::PathBuf;
 use std::str::FromStr;
 use std::task::Poll;
-use tokio::sync::watch;
 use tracing_subscriber::filter::LevelFilter;
 use xtra::Actor;
 
@@ -160,13 +159,13 @@ async fn main() -> Result<()> {
 
     let mut tasks = Tasks::default();
 
-    let (wallet, wallet_fut) = wallet::Actor::new(
+    let (wallet, wallet_feed_receiver) = wallet::Actor::new(
         opts.network.electrum(),
         &data_dir.join("maker_wallet.sqlite"),
         ext_priv_key,
-    )?
-    .create(None)
-    .run();
+    )?;
+
+    let (wallet, wallet_fut) = wallet.create(None).run();
     tasks.add(wallet_fut);
 
     if let Some(Withdraw::Withdraw {
@@ -202,8 +201,6 @@ async fn main() -> Result<()> {
         "ddd4636845a90185991826be5a494cde9f4a6947b1727217afedc6292fa4caf7",
     )?;
 
-    let (wallet_feed_sender, wallet_feed_receiver) = watch::channel(None);
-
     let figment = rocket::Config::figment()
         .merge(("address", opts.http_address.ip()))
         .merge(("port", opts.http_address.port()));
@@ -289,7 +286,6 @@ async fn main() -> Result<()> {
     });
 
     tasks.add(incoming_connection_addr.attach_stream(listener_stream));
-    tasks.add(wallet_sync::new(wallet.clone(), wallet_feed_sender));
 
     rocket::custom(figment)
         .manage(projection_feeds)

daemon/src/taker.rs

@@ -8,7 +8,7 @@ use daemon::model::cfd::Role;
 use daemon::model::Identity;
 use daemon::seed::Seed;
 use daemon::{
-    bitmex_price_feed, db, housekeeping, logger, monitor, oracle, projection, wallet, wallet_sync,
+    bitmex_price_feed, db, housekeeping, logger, monitor, oracle, projection, wallet,
     TakerActorSystem, Tasks, HEARTBEAT_INTERVAL, N_PAYOUTS, SETTLEMENT_INTERVAL,
 };
 use sqlx::sqlite::SqliteConnectOptions;
@@ -17,7 +17,6 @@ use std::net::SocketAddr;
 use std::path::PathBuf;
 use std::str::FromStr;
 use std::time::Duration;
-use tokio::sync::watch;
 use tracing_subscriber::filter::LevelFilter;
 use xtra::Actor;
 
@@ -171,13 +170,13 @@ async fn main() -> Result<()> {
 
     let mut tasks = Tasks::default();
 
-    let (wallet, wallet_fut) = wallet::Actor::new(
+    let (wallet, wallet_feed_receiver) = wallet::Actor::new(
         opts.network.electrum(),
         &data_dir.join("taker_wallet.sqlite"),
         ext_priv_key,
-    )?
-    .create(None)
-    .run();
+    )?;
+
+    let (wallet, wallet_fut) = wallet.create(None).run();
     tasks.add(wallet_fut);
 
     if let Some(Withdraw::Withdraw {
@@ -202,8 +201,6 @@ async fn main() -> Result<()> {
         "ddd4636845a90185991826be5a494cde9f4a6947b1727217afedc6292fa4caf7",
     )?;
 
-    let (wallet_feed_sender, wallet_feed_receiver) = watch::channel(None);
-
     let figment = rocket::Config::figment()
         .merge(("address", opts.http_address.ip()))
         .merge(("port", opts.http_address.port()));
@@ -270,8 +267,6 @@ async fn main() -> Result<()> {
         possible_addresses,
     ));
 
-    tasks.add(wallet_sync::new(wallet.clone(), wallet_feed_sender));
-
     let rocket = rocket::custom(figment)
         .manage(projection_feeds)
         .manage(cfd_actor_addr)

daemon/src/wallet.rs

@@ -1,5 +1,7 @@
 use crate::model::{Timestamp, WalletInfo};
+use crate::Tasks;
 use anyhow::{bail, Context, Result};
+use async_trait::async_trait;
 use bdk::bitcoin::consensus::encode::serialize_hex;
 use bdk::bitcoin::util::bip32::ExtendedPrivKey;
 use bdk::bitcoin::util::psbt::PartiallySignedTransaction;
@@ -11,9 +13,10 @@ use bdk::wallet::AddressIndex;
 use bdk::{electrum_client, FeeRate, KeychainKind, SignOptions};
 use maia::{PartyParams, TxBuilderExt};
 use rocket::serde::json::Value;
-
 use std::collections::HashSet;
 use std::path::Path;
+use std::time::Duration;
+use tokio::sync::watch;
 use xtra_productivity::xtra_productivity;
 
 const DUST_AMOUNT: u64 = 546;
@@ -21,6 +24,8 @@ const DUST_AMOUNT: u64 = 546;
 pub struct Actor {
     wallet: bdk::Wallet<ElectrumBlockchain, bdk::database::SqliteDatabase>,
     used_utxos: HashSet<OutPoint>,
+    tasks: Tasks,
+    sender: watch::Sender<Option<WalletInfo>>,
 }
 
 #[derive(thiserror::Error, Debug, Clone, Copy)]
@@ -32,7 +37,7 @@ impl Actor {
         electrum_rpc_url: &str,
         wallet_dir: &Path,
         ext_priv_key: ExtendedPrivKey,
-    ) -> Result<Self> {
+    ) -> Result<(Self, watch::Receiver<Option<WalletInfo>>)> {
         let client = bdk::electrum_client::Client::new(electrum_rpc_url)
             .context("Failed to initialize Electrum RPC client")?;
 
@@ -46,10 +51,15 @@ impl Actor {
             ElectrumBlockchain::from(client),
         )?;
 
-        Ok(Self {
+        let (sender, receiver) = watch::channel(None);
+        let actor = Self {
             wallet,
+            tasks: Tasks::default(),
+            sender,
             used_utxos: HashSet::default(),
-        })
+        };
+
+        Ok((actor, receiver))
     }
 
     /// Calculates the maximum "giveable" amount of this wallet.
@@ -86,11 +96,8 @@ impl Actor {
             Err(e) => bail!("Failed to build transaction. {:#}", e),
         }
     }
-}
 
-#[xtra_productivity]
-impl Actor {
-    pub fn handle_sync(&mut self, _msg: Sync) -> Result<WalletInfo> {
+    fn sync_internal(&mut self) -> Result<WalletInfo> {
         self.wallet
             .sync(NoopProgress, None)
             .context("Failed to sync wallet")?;
@@ -107,6 +114,24 @@ impl Actor {
 
         Ok(wallet_info)
     }
+}
+
+#[xtra_productivity]
+impl Actor {
+    pub fn handle_sync(&mut self, _msg: Sync) -> Result<()> {
+        let wallet_info_update = match self.sync_internal() {
+            Ok(wallet_info) => Some(wallet_info),
+            Err(e) => {
+                tracing::debug!("{:#}", e);
+
+                None
+            }
+        };
+
+        let _ = self.sender.send(wallet_info_update);
+
+        Ok(())
+    }
 
     pub fn handle_sign(&mut self, msg: Sign) -> Result<PartiallySignedTransaction> {
         let mut psbt = msg.psbt;
@@ -222,14 +247,30 @@ impl Actor {
     }
 }
 
-impl xtra::Actor for Actor {}
+#[async_trait]
+impl xtra::Actor for Actor {
+    async fn started(&mut self, ctx: &mut xtra::Context<Self>) {
+        let this = ctx.address().expect("self to be alive");
+
+        self.tasks.add(async move {
+            loop {
+                tokio::time::sleep(Duration::from_secs(10)).await;
+
+                if this.send(Sync).await.is_err() {
+                    return; // we are disconnected, meaning actor stopped, just exit the loop.
+                }
+            }
+        });
+    }
+}
 
 pub struct BuildPartyParams {
     pub amount: Amount,
     pub identity_pk: PublicKey,
 }
 
-pub struct Sync;
+/// Private message to trigger a sync.
+struct Sync;
 
 pub struct Sign {
     pub psbt: PartiallySignedTransaction,

daemon/src/wallet_sync.rs

@@ -1,29 +0,0 @@
-use crate::model::WalletInfo;
-use crate::wallet;
-use std::time::Duration;
-use tokio::sync::watch;
-use tokio::time::sleep;
-use xtra::Address;
-
-pub async fn new(wallet: Address<wallet::Actor>, sender: watch::Sender<Option<WalletInfo>>) {
-    loop {
-        sleep(Duration::from_secs(10)).await;
-
-        let info = match wallet
-            .send(wallet::Sync)
-            .await
-            .expect("Wallet actor to be available")
-        {
-            Ok(info) => Some(info),
-            Err(e) => {
-                tracing::warn!("Failed to sync wallet: {:#}", e);
-                None
-            }
-        };
-
-        if sender.send(info).is_err() {
-            tracing::warn!("Wallet feed receiver not available, stopping wallet sync");
-            break;
-        }
-    }
-}

daemon/tests/harness/mocks/wallet.rs

@@ -28,10 +28,6 @@ impl WalletActor {
     async fn handle(&mut self, msg: wallet::BuildPartyParams) -> Result<PartyParams> {
         self.mock.lock().await.build_party_params(msg)
     }
-    async fn handle(&mut self, msg: wallet::Sync) -> Result<WalletInfo> {
-        tracing::info!("We are handling the wallet sync msg");
-        self.mock.lock().await.sync(msg)
-    }
     async fn handle(&mut self, msg: wallet::Sign) -> Result<PartiallySignedTransaction> {
         self.mock.lock().await.sign(msg)
     }
@@ -53,10 +49,6 @@ pub trait Wallet {
     fn broadcast(&mut self, _msg: wallet::TryBroadcastTransaction) -> Result<Txid> {
         unreachable!("mockall will reimplement this method")
     }
-
-    fn sync(&mut self, _msg: wallet::Sync) -> Result<WalletInfo> {
-        unreachable!("mockall will reimplement this method")
-    }
 }
 
 #[allow(dead_code)]