feat(rt-sync): add pull and merge (#556)

lib/core/Cargo.toml

@@ -56,10 +56,11 @@ x509-parser = { version = "0.16.0" }
 tempfile = "3"
 tonic = { version = "0.12.3", features = ["tls"] }
 prost = "0.13.3"
-uuid = { version = "1.8.0", features = ["v4"] }
+ecies = "0.2.7"
+semver = "1.0.23"
+lazy_static = "1.5.0"
 
 [dev-dependencies]
-lazy_static = "1.5.0"
 paste = "1.0.15"
 tempdir = "0.3.7"
 uuid = { version = "1.8.0", features = ["v4"] }

lib/core/src/model.rs

@@ -289,6 +289,12 @@ pub trait Signer: Send + Sync {
     /// HMAC-SHA256 using the private key derived from the given derivation path
     /// This is used to calculate the linking key of lnurl-auth specification: <https://github.com/lnurl/luds/blob/luds/05.md>
     fn hmac_sha256(&self, msg: Vec<u8>, derivation_path: String) -> Result<Vec<u8>, SignerError>;
+
+    /// Encrypts a message using (ECIES)[ecies::encrypt]
+    fn ecies_encrypt(&self, msg: &[u8]) -> Result<Vec<u8>, SignerError>;
+
+    /// Decrypts a message using (ECIES)[ecies::decrypt]
+    fn ecies_decrypt(&self, msg: &[u8]) -> Result<Vec<u8>, SignerError>;
 }
 
 /// An argument when calling [crate::sdk::LiquidSdk::connect].
@@ -648,7 +654,7 @@ impl SwapScriptV2 {
     }
 }
 
-#[derive(Debug, Copy, Clone, PartialEq, Serialize)]
+#[derive(Debug, Copy, Clone, PartialEq, Serialize, Deserialize)]
 pub enum Direction {
     Incoming = 0,
     Outgoing = 1,

lib/core/src/persist/sync.rs

@@ -3,9 +3,13 @@ use std::collections::HashMap;
 use anyhow::Result;
 use rusqlite::{named_params, Connection, OptionalExtension, Row, Statement, TransactionBehavior};
 
-use super::Persister;
+use super::{PaymentState, Persister};
 use crate::{
-    sync::model::{sync::Record, RecordType, SyncOutgoingChanges, SyncSettings, SyncState},
+    sync::model::{
+        data::{ChainSyncData, ReceiveSyncData, SendSyncData},
+        sync::Record,
+        RecordType, SyncOutgoingChanges, SyncSettings, SyncState,
+    },
     utils,
 };
 

lib/core/src/signer.rs

@@ -6,7 +6,7 @@ use boltz_client::PublicKey;
 use lwk_common::Signer as LwkSigner;
 use lwk_wollet::bitcoin::bip32::Xpriv;
 use lwk_wollet::bitcoin::Network;
-use lwk_wollet::elements_miniscript;
+use lwk_wollet::elements_miniscript::{self, ToPublicKey as _};
 use lwk_wollet::elements_miniscript::{
     bitcoin::{self, bip32::DerivationPath},
     elements::{
@@ -253,6 +253,25 @@ impl Signer for SdkSigner {
             .as_byte_array()
             .to_vec())
     }
+
+    fn ecies_encrypt(&self, msg: &[u8]) -> Result<Vec<u8>, SignerError> {
+        let keypair = self.xprv.to_keypair(&self.secp);
+        let rc_pub = keypair.public_key().to_public_key().to_bytes();
+        Ok(
+            ecies::encrypt(&rc_pub, msg).map_err(|err| SignerError::Generic {
+                err: format!("Could not encrypt data: {err}"),
+            })?,
+        )
+    }
+
+    fn ecies_decrypt(&self, msg: &[u8]) -> Result<Vec<u8>, SignerError> {
+        let rc_prv = self.xprv.to_priv().to_bytes();
+        Ok(
+            ecies::decrypt(&rc_prv, msg).map_err(|err| SignerError::Generic {
+                err: format!("Could not decrypt data: {err}"),
+            })?,
+        )
+    }
 }
 
 #[cfg(test)]

lib/core/src/sync/client.rs

@@ -0,0 +1,59 @@
+use anyhow::{anyhow, Result};
+
+use async_trait::async_trait;
+use log::debug;
+use tokio::sync::Mutex;
+
+use super::model::sync::{
+    syncer_client::SyncerClient as ProtoSyncerClient, ListChangesReply, ListChangesRequest,
+    SetRecordReply, SetRecordRequest,
+};
+
+#[async_trait]
+pub(crate) trait SyncerClient: Send + Sync {
+    async fn connect(&self, connect_url: String) -> Result<()>;
+    async fn push(&self, req: SetRecordRequest) -> Result<SetRecordReply>;
+    async fn pull(&self, req: ListChangesRequest) -> Result<ListChangesReply>;
+    async fn disconnect(&self) -> Result<()>;
+}
+
+pub(crate) struct BreezSyncerClient {
+    inner: Mutex<Option<ProtoSyncerClient<tonic::transport::Channel>>>,
+}
+
+impl BreezSyncerClient {
+    pub(crate) fn new() -> Self {
+        Self {
+            inner: Default::default(),
+        }
+    }
+}
+
+#[async_trait]
+impl SyncerClient for BreezSyncerClient {
+    async fn connect(&self, connect_url: String) -> Result<()> {
+        let mut client = self.inner.lock().await;
+        *client = Some(ProtoSyncerClient::connect(connect_url.clone()).await?);
+        debug!("Successfully connected to {connect_url}");
+        Ok(())
+    }
+
+    async fn push(&self, req: SetRecordRequest) -> Result<SetRecordReply> {
+        let Some(mut client) = self.inner.lock().await.clone() else {
+            return Err(anyhow!("Cannot run `set_record`: client not connected"));
+        };
+        Ok(client.set_record(req).await?.into_inner())
+    }
+    async fn pull(&self, req: ListChangesRequest) -> Result<ListChangesReply> {
+        let Some(mut client) = self.inner.lock().await.clone() else {
+            return Err(anyhow!("Cannot run `list_changes`: client not connected"));
+        };
+        Ok(client.list_changes(req).await?.into_inner())
+    }
+
+    async fn disconnect(&self) -> Result<()> {
+        let mut client = self.inner.lock().await;
+        *client = None;
+        Ok(())
+    }
+}