fix: use std mutex for sender_accounts

Signed-off-by: Alexis Asseman <alexis@semiotic.ai>

tap-agent/src/tap/sender_account.rs

@@ -434,9 +434,7 @@ mod tests {
 
     // To help with testing from other modules.
     impl SenderAccount {
-        pub async fn _tests_get_allocations_active(
-            &self,
-        ) -> HashMap<Address, Arc<SenderAllocation>> {
+        pub fn _tests_get_allocations_active(&self) -> HashMap<Address, Arc<SenderAllocation>> {
             self.inner
                 .allocations
                 .lock()
@@ -452,9 +450,7 @@ mod tests {
                 .collect()
         }
 
-        pub async fn _tests_get_allocations_ineligible(
-            &self,
-        ) -> HashMap<Address, Arc<SenderAllocation>> {
+        pub fn _tests_get_allocations_ineligible(&self) -> HashMap<Address, Arc<SenderAllocation>> {
             self.inner
                 .allocations
                 .lock()

tap-agent/src/tap/sender_accounts_manager.rs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use std::collections::HashSet;
+use std::sync::Mutex as StdMutex;
 use std::{collections::HashMap, str::FromStr, sync::Arc};
 
 use alloy_sol_types::Eip712Domain;
@@ -13,7 +14,6 @@ use indexer_common::prelude::{Allocation, SubgraphClient};
 use serde::Deserialize;
 use sqlx::{postgres::PgListener, PgPool};
 use thegraph::types::Address;
-use tokio::sync::RwLock;
 use tracing::{error, warn};
 
 use crate::config;
@@ -41,7 +41,7 @@ struct Inner {
     config: &'static config::Cli,
     pgpool: PgPool,
     /// Map of sender_address to SenderAllocation.
-    sender_accounts: Arc<RwLock<HashMap<Address, SenderAccount>>>,
+    sender_accounts: Arc<StdMutex<HashMap<Address, Arc<SenderAccount>>>>,
     indexer_allocations: Eventual<HashMap<Address, Allocation>>,
     escrow_accounts: Eventual<EscrowAccounts>,
     escrow_subgraph: &'static SubgraphClient,
@@ -57,11 +57,11 @@ impl Inner {
         target_senders: HashSet<Address>,
     ) -> Result<()> {
         let eligible_allocations: HashSet<Address> = indexer_allocations.keys().copied().collect();
-        let mut sender_accounts_write = self.sender_accounts.write().await;
+        let mut sender_accounts_copy = self.sender_accounts.lock().unwrap().clone();
 
         // For all Senders that are not in the target_senders HashSet, set all their allocations to
         // ineligible. That will trigger a finalization of all their receipts.
-        for (sender_id, sender_account) in sender_accounts_write.iter_mut() {
+        for (sender_id, sender_account) in sender_accounts_copy.iter() {
             if !target_senders.contains(sender_id) {
                 sender_account.update_allocations(HashSet::new()).await;
             }
@@ -70,33 +70,37 @@ impl Inner {
         // Get or create SenderAccount instances for all currently eligible
         // senders.
         for sender_id in &target_senders {
-            let sender = sender_accounts_write
-                .entry(*sender_id)
-                .or_insert(SenderAccount::new(
-                    self.config,
-                    self.pgpool.clone(),
-                    *sender_id,
-                    self.escrow_accounts.clone(),
-                    self.escrow_subgraph,
-                    self.escrow_adapter.clone(),
-                    self.tap_eip712_domain_separator.clone(),
-                    self.sender_aggregator_endpoints
-                        .get(sender_id)
-                        .ok_or_else(|| {
-                            anyhow!(
-                                "No sender_aggregator_endpoint found for sender {}",
-                                sender_id
-                            )
-                        })?
-                        .clone(),
-                ));
+            let sender =
+                sender_accounts_copy
+                    .entry(*sender_id)
+                    .or_insert(Arc::new(SenderAccount::new(
+                        self.config,
+                        self.pgpool.clone(),
+                        *sender_id,
+                        self.escrow_accounts.clone(),
+                        self.escrow_subgraph,
+                        self.escrow_adapter.clone(),
+                        self.tap_eip712_domain_separator.clone(),
+                        self.sender_aggregator_endpoints
+                            .get(sender_id)
+                            .ok_or_else(|| {
+                                anyhow!(
+                                    "No sender_aggregator_endpoint found for sender {}",
+                                    sender_id
+                                )
+                            })?
+                            .clone(),
+                    )));
 
             // Update sender's allocations
             sender
                 .update_allocations(eligible_allocations.clone())
                 .await;
         }
 
+        // Replace the sender_accounts with the updated sender_accounts_copy
+        *self.sender_accounts.lock().unwrap() = sender_accounts_copy;
+
         // TODO: remove Sender instances that are finished. Ideally done in another async task?
 
         Ok(())
@@ -118,7 +122,7 @@ impl SenderAccountsManager {
         let inner = Arc::new(Inner {
             config,
             pgpool,
-            sender_accounts: Arc::new(RwLock::new(HashMap::new())),
+            sender_accounts: Arc::new(StdMutex::new(HashMap::new())),
             indexer_allocations,
             escrow_accounts,
             escrow_subgraph,
@@ -239,11 +243,11 @@ impl SenderAccountsManager {
 
         // Create SenderAccount instances for all senders that have unfinalized allocations and add
         // the allocations to the SenderAccount instances.
-        let mut sender_accounts_write_lock = inner.sender_accounts.write().await;
+        let mut sender_accounts = HashMap::new();
         for (sender_id, allocation_ids) in unfinalized_sender_allocations_map {
-            let sender = sender_accounts_write_lock
+            let sender = sender_accounts
                 .entry(sender_id)
-                .or_insert(SenderAccount::new(
+                .or_insert(Arc::new(SenderAccount::new(
                     config,
                     inner.pgpool.clone(),
                     sender_id,
@@ -256,7 +260,7 @@ impl SenderAccountsManager {
                         .get(&sender_id)
                         .expect("should be able to get sender_aggregator_endpoint for sender")
                         .clone(),
-                ));
+                )));
 
             sender.update_allocations(allocation_ids).await;
 
@@ -265,7 +269,8 @@ impl SenderAccountsManager {
                 .await
                 .expect("should be able to recompute unaggregated fees");
         }
-        drop(sender_accounts_write_lock);
+        // replace the sender_accounts with the updated sender_accounts
+        *inner.sender_accounts.lock().unwrap() = sender_accounts;
 
         // Update senders and allocations based on the current state of the network.
         // It is important to do this after creating the Sender and SenderAllocation instances based
@@ -320,7 +325,7 @@ impl SenderAccountsManager {
     /// corresponding SenderAccount.
     async fn new_receipts_watcher(
         mut pglistener: PgListener,
-        sender_accounts: Arc<RwLock<HashMap<Address, SenderAccount>>>,
+        sender_accounts: Arc<StdMutex<HashMap<Address, Arc<SenderAccount>>>>,
         escrow_accounts: Eventual<EscrowAccounts>,
     ) {
         loop {
@@ -354,7 +359,13 @@ impl SenderAccountsManager {
                 }
             };
 
-            if let Some(sender_account) = sender_accounts.read().await.get(&sender_address) {
+            let sender_account = sender_accounts
+                .lock()
+                .unwrap()
+                .get(&sender_address)
+                .cloned();
+
+            if let Some(sender_account) = sender_account {
                 sender_account
                     .handle_new_receipt_notification(new_receipt_notification)
                     .await;
@@ -492,8 +503,8 @@ mod tests {
         assert!(sender_account
             ._inner
             .sender_accounts
-            .write()
-            .await
+            .lock()
+            .unwrap()
             .contains_key(&SENDER.1));
 
         // Remove the escrow account from the escrow_accounts Eventual.
@@ -506,22 +517,20 @@ mod tests {
         assert!(sender_account
             ._inner
             .sender_accounts
-            .read()
-            .await
+            .lock()
+            .unwrap()
             .get(&SENDER.1)
             .unwrap()
             ._tests_get_allocations_active()
-            .await
             .is_empty());
         assert!(sender_account
             ._inner
             .sender_accounts
-            .read()
-            .await
+            .lock()
+            .unwrap()
             .get(&SENDER.1)
             .unwrap()
             ._tests_get_allocations_ineligible()
-            .await
             .contains_key(&allocation_id));
     }
 }