Add external tx hash to map bridge events to their corresponding transactions

packages/examples/six-sigma/src/lib.rs

@@ -875,6 +875,7 @@ mod tests {
                     .and_then(|log_event| match log_event {
                         LogEvent::ProcessedBridgeEvent(LogBridgeEvent::Regular {
                             bridge_event_id: event_id,
+                            tx_hash: _,
                             account_id,
                         }) => (event_id == bridge_event_id).then_some(account_id),
                         _ => unreachable!(),

packages/kolme/src/api_server.rs

@@ -171,9 +171,15 @@ async fn handle_websocket<App: KolmeApp>(
                 };
                 ApiNotification::NewBlock { block, logs }
             }
-            Notification::GenesisInstantiation { chain, contract } => {
-                ApiNotification::GenesisInstantiation { chain, contract }
-            }
+            Notification::GenesisInstantiation {
+                chain,
+                tx_hash,
+                contract,
+            } => ApiNotification::GenesisInstantiation {
+                chain,
+                tx_hash,
+                contract,
+            },
             Notification::FailedTransaction(failed) => ApiNotification::FailedTransaction(failed),
             Notification::LatestBlock(latest_block) => ApiNotification::LatestBlock(latest_block),
         };
@@ -206,6 +212,7 @@ pub enum ApiNotification<AppMessage> {
     /// A claim by a submitter that it has instantiated a bridge contract.
     GenesisInstantiation {
         chain: ExternalChain,
+        tx_hash: Option<ExternalTxHash>,
         contract: String,
     },
     /// A transaction failed in the processor.

packages/kolme/src/core/execute.rs

@@ -168,10 +168,11 @@ impl<App: KolmeApp> ExecutionContext<'_, App> {
             }
             Message::Listener {
                 chain,
+                tx_hash,
                 event,
                 event_id,
             } => {
-                self.listener(*chain, event, *event_id)?;
+                self.listener(*chain, tx_hash.clone(), event, *event_id)?;
             }
             Message::Approve {
                 chain,
@@ -196,6 +197,7 @@ impl<App: KolmeApp> ExecutionContext<'_, App> {
     fn listener(
         &mut self,
         chain: ExternalChain,
+        tx_hash: Option<ExternalTxHash>,
         event: &BridgeEvent,
         event_id: BridgeEventId,
     ) -> Result<()> {
@@ -219,6 +221,7 @@ impl<App: KolmeApp> ExecutionContext<'_, App> {
                     event_id,
                     PendingBridgeEvent {
                         event: event.clone(),
+                        tx_hash,
                         attestations: BTreeSet::new(),
                     },
                 );
@@ -335,6 +338,7 @@ impl<App: KolmeApp> ExecutionContext<'_, App> {
                             .deposit(asset_config.asset_id, amount)?;
                     }
                     self.log_event(LogEvent::ProcessedBridgeEvent(LogBridgeEvent::Regular {
+                        tx_hash: pending.tx_hash,
                         bridge_event_id: event_id,
                         account_id,
                     }))?;

packages/kolme/src/core/types.rs

@@ -15,6 +15,27 @@ pub use error::KolmeError;
 pub type SolanaClient = solana_client::nonblocking::rpc_client::RpcClient;
 pub type SolanaPubsubClient = solana_client::nonblocking::pubsub_client::PubsubClient;
 
+#[derive(serde::Serialize, serde::Deserialize, PartialEq, Eq, Clone, Debug)]
+pub struct ExternalTxHash(pub String);
+
+impl MerkleSerialize for ExternalTxHash {
+    fn merkle_serialize(
+        &self,
+        serializer: &mut MerkleSerializer,
+    ) -> std::result::Result<(), MerkleSerialError> {
+        serializer.store(&self.0)
+    }
+}
+
+impl MerkleDeserialize for ExternalTxHash {
+    fn merkle_deserialize(
+        deserializer: &mut MerkleDeserializer,
+        _version: usize,
+    ) -> Result<Self, MerkleSerialError> {
+        Ok(ExternalTxHash(deserializer.load()?))
+    }
+}
+
 #[derive(
     serde::Serialize,
     serde::Deserialize,
@@ -420,6 +441,7 @@ impl MerkleDeserialize for PendingBridgeAction {
 #[derive(serde::Serialize, serde::Deserialize, Clone, PartialEq, Eq, Debug)]
 pub struct PendingBridgeEvent {
     pub event: BridgeEvent,
+    pub tx_hash: Option<ExternalTxHash>,
     /// Attestations from the listeners
     pub attestations: BTreeSet<PublicKey>,
 }
@@ -428,9 +450,11 @@ impl MerkleSerialize for PendingBridgeEvent {
     fn merkle_serialize(&self, serializer: &mut MerkleSerializer) -> Result<(), MerkleSerialError> {
         let Self {
             event,
+            tx_hash,
             attestations,
         } = self;
         serializer.store_json(event)?;
+        serializer.store(tx_hash)?;
         serializer.store(attestations)?;
         Ok(())
     }
@@ -443,6 +467,7 @@ impl MerkleDeserialize for PendingBridgeEvent {
     ) -> Result<Self, MerkleSerialError> {
         Ok(Self {
             event: deserializer.load_json()?,
+            tx_hash: deserializer.load()?,
             attestations: deserializer.load()?,
         })
     }
@@ -1042,6 +1067,7 @@ pub enum Message<AppMessage> {
     App(AppMessage),
     Listener {
         chain: ExternalChain,
+        tx_hash: Option<ExternalTxHash>,
         event_id: BridgeEventId,
         event: BridgeEvent,
     },
@@ -1642,6 +1668,7 @@ pub enum Notification<AppMessage> {
     /// A claim by a submitter that it has instantiated a bridge contract.
     GenesisInstantiation {
         chain: ExternalChain,
+        tx_hash: Option<ExternalTxHash>,
         contract: String,
     },
     /// A transaction failed in the processor.
@@ -1686,6 +1713,7 @@ pub enum LogEvent {
 #[serde(rename_all = "snake_case")]
 pub enum LogBridgeEvent {
     Regular {
+        tx_hash: Option<ExternalTxHash>,
         bridge_event_id: BridgeEventId,
         account_id: AccountId,
     },

packages/kolme/src/listener/cosmos.rs

@@ -120,6 +120,7 @@ pub(crate) fn to_kolme_message<T>(
 
             Message::Listener {
                 chain,
+                tx_hash: None,
                 event_id,
                 event: BridgeEvent::Regular {
                     wallet: Wallet(wallet),
@@ -130,6 +131,7 @@ pub(crate) fn to_kolme_message<T>(
         }
         BridgeEventMessage::Signed { wallet, action_id } => Message::Listener {
             chain,
+            tx_hash: None,
             event_id,
             event: BridgeEvent::Signed {
                 wallet: Wallet(wallet),

packages/kolme/src/listener/mod.rs

@@ -90,7 +90,12 @@ impl<App: KolmeApp> Listener<App> {
                 return Ok(contracts);
             }
 
-            if let Notification::GenesisInstantiation { chain, contract } = receiver.recv().await? {
+            if let Notification::GenesisInstantiation {
+                chain,
+                tx_hash,
+                contract,
+            } = receiver.recv().await?
+            {
                 if chain.name() != name {
                     continue;
                 }
@@ -147,6 +152,7 @@ impl<App: KolmeApp> Listener<App> {
                             &self.secret,
                             vec![Message::Listener {
                                 chain,
+                                tx_hash,
                                 event: BridgeEvent::Instantiated { contract },
                                 event_id: BridgeEventId::start(),
                             }],

packages/kolme/src/listener/solana.rs

@@ -117,7 +117,9 @@ async fn listen_internal<App: KolmeApp>(
                 continue;
             }
 
-            let Some(msg) = extract_bridge_message_from_logs(&resp.value.logs)? else {
+            let Some((tx_hash, msg)) =
+                extract_bridge_message_from_logs(&resp.value.signature, &resp.value.logs)?
+            else {
                 tracing::warn!(
                     "No bridge message data log was found in TX {} logs.",
                     resp.value.signature
@@ -144,7 +146,7 @@ async fn listen_internal<App: KolmeApp>(
                     .expect("should have at least one TX processed.")
                     .next();
             } else {
-                let msg = to_kolme_message::<App::Message>(msg, chain);
+                let msg = to_kolme_message::<App::Message>(tx_hash, msg, chain);
 
                 kolme
                     .sign_propose_await_transaction(secret, vec![msg])
@@ -168,7 +170,7 @@ async fn catch_up<App: KolmeApp>(
 ) -> Result<Option<BridgeEventId>> {
     tracing::info!("Catching up on missing bridge events until {}.", last_seen);
 
-    let mut messages = vec![];
+    let mut messages_with_hashes = vec![];
     let txs = client.get_signatures_for_address(contract).await?;
 
     // First entry is the latest transaction, we want to work up until to the target ID provided.
@@ -196,7 +198,8 @@ async fn catch_up<App: KolmeApp>(
             continue;
         };
 
-        let Some(msg) = extract_bridge_message_from_logs(&logs)? else {
+        let Some((tx_hash, msg)) = extract_bridge_message_from_logs(&sig.to_string(), &logs)?
+        else {
             tracing::warn!("No bridge message data log was found in TX {} logs.", sig);
 
             continue;
@@ -206,24 +209,24 @@ async fn catch_up<App: KolmeApp>(
             break;
         }
 
-        messages.push(msg);
+        messages_with_hashes.push((tx_hash, msg));
     }
 
-    assert!(messages.is_sorted_by(|a, b| a.id > b.id));
-    let Some(latest_id) = messages.first().map(|x| x.id) else {
+    assert!(messages_with_hashes.is_sorted_by(|(_, a), (_, b)| a.id > b.id));
+    let Some(latest_id) = messages_with_hashes.first().map(|(_, x)| x.id) else {
         return Ok(None);
     };
 
     tracing::info!(
         "Found {} missed bridge events. Proposing Kolme transaction...",
-        messages.len()
+        messages_with_hashes.len()
     );
 
     // Now process in reverse insertion order - from oldest to newest.
-    let kolme_messages: Vec<Message<App::Message>> = messages
+    let kolme_messages: Vec<Message<App::Message>> = messages_with_hashes
         .into_iter()
         .rev()
-        .map(|x| to_kolme_message(x, chain))
+        .map(|(tx_hash, x)| to_kolme_message(tx_hash, x, chain))
         .collect();
 
     kolme
@@ -233,7 +236,10 @@ async fn catch_up<App: KolmeApp>(
     Ok(Some(BridgeEventId(latest_id)))
 }
 
-fn extract_bridge_message_from_logs(logs: &[String]) -> Result<Option<BridgeMessage>> {
+fn extract_bridge_message_from_logs(
+    signature: &str,
+    logs: &[String],
+) -> Result<Option<(ExternalTxHash, BridgeMessage)>> {
     const PROGRAM_DATA_LOG: &str = "Program data: ";
 
     // Our program data should always be the last "Program data:" entry even if CPI was invoked.
@@ -253,7 +259,7 @@ fn extract_bridge_message_from_logs(logs: &[String]) -> Result<Option<BridgeMess
         });
 
         match result {
-            Ok(result) => return Ok(Some(result)),
+            Ok(result) => return Ok(Some((ExternalTxHash(signature.to_owned()), result))),
             Err(e) => {
                 if logs.iter().any(|x| x.contains("Instruction: Initialize")) {
                     tracing::info!(
@@ -270,7 +276,11 @@ fn extract_bridge_message_from_logs(logs: &[String]) -> Result<Option<BridgeMess
     Ok(None)
 }
 
-fn to_kolme_message<T>(msg: BridgeMessage, chain: SolanaChain) -> Message<T> {
+fn to_kolme_message<T>(
+    tx_hash: ExternalTxHash,
+    msg: BridgeMessage,
+    chain: SolanaChain,
+) -> Message<T> {
     let event_id = BridgeEventId(msg.id);
     let wallet = Pubkey::new_from_array(msg.wallet).to_string();
     let event = match msg.ty {
@@ -299,6 +309,7 @@ fn to_kolme_message<T>(msg: BridgeMessage, chain: SolanaChain) -> Message<T> {
 
     Message::Listener {
         chain: chain.into(),
+        tx_hash: Some(tx_hash),
         event_id,
         event,
     }

packages/kolme/src/submitter/mod.rs

@@ -99,6 +99,7 @@ impl<App: KolmeApp> Submitter<App> {
                 Notification::NewBlock(_) => (),
                 Notification::GenesisInstantiation {
                     chain: _,
+                    tx_hash: _,
                     contract: _,
                 } => continue,
                 Notification::FailedTransaction { .. } => continue,
@@ -128,7 +129,7 @@ impl<App: KolmeApp> Submitter<App> {
     }
 
     async fn handle_genesis(&mut self, genesis_action: GenesisAction) -> Result<()> {
-        let (contract_addr, chain) = match genesis_action {
+        let (contract_addr, txhash, chain) = match genesis_action {
             GenesisAction::InstantiateCosmos {
                 chain,
                 code_id,
@@ -146,7 +147,7 @@ impl<App: KolmeApp> Submitter<App> {
 
                 let addr = cosmos::instantiate(&cosmos, seed_phrase, code_id, args).await?;
 
-                (addr, chain.into())
+                (addr, None, chain.into())
             }
             GenesisAction::InstantiateSolana {
                 chain,
@@ -163,14 +164,15 @@ impl<App: KolmeApp> Submitter<App> {
 
                 let client = self.kolme.read().get_solana_client(chain).await;
 
-                solana::instantiate(&client, keypair, &program_id, args).await?;
+                let txhash = solana::instantiate(&client, keypair, &program_id, args).await?;
 
-                (program_id, chain.into())
+                (program_id, Some(txhash), chain.into())
             }
         };
 
         self.kolme.notify(Notification::GenesisInstantiation {
             chain,
+            tx_hash: txhash,
             contract: contract_addr,
         });
         self.genesis_created.insert(chain);

packages/kolme/src/submitter/solana.rs

@@ -14,16 +14,16 @@ pub async fn instantiate(
     keypair: &Keypair,
     program_id: &str,
     set: ValidatorSet,
-) -> Result<()> {
+) -> Result<ExternalTxHash> {
     let data = InitializeIxData { set };
 
     let program_pubkey = Pubkey::from_str(program_id)?;
     let blockhash = client.get_latest_blockhash().await?;
     let tx = init_tx(program_pubkey, blockhash, keypair, &data).map_err(|x| anyhow::anyhow!(x))?;
 
-    client.send_and_confirm_transaction(&tx).await?;
+    let signature = client.send_and_confirm_transaction(&tx).await?;
 
-    Ok(())
+    Ok(ExternalTxHash(signature.to_string()))
 }
 
 pub async fn execute(