Add Disable Mempool Flag

.github/actions/setup-rust/action.yaml

@@ -52,9 +52,9 @@ runs:
 
     - name: Install cargo dependencies
       run: |
-        rustup install nightly-2023-10-05 
-        rustup component add rustfmt --toolchain nightly-2023-10-05-x86_64-unknown-linux-gnu
-        rustup component add clippy --toolchain nightly-2023-10-05-x86_64-unknown-linux-gnu
+        rustup install nightly-2024-02-01 
+        rustup component add rustfmt --toolchain nightly-2024-02-01-x86_64-unknown-linux-gnu
+        rustup component add clippy --toolchain nightly-2024-02-01-x86_64-unknown-linux-gnu
         cargo install cargo-udeps --locked
         cargo install cargo-sort
       shell: bash
@@ -63,6 +63,6 @@ runs:
       run: |
         rustc --version;
         cargo --version;
-        cargo +nightly-2023-10-05-x86_64-unknown-linux-gnu clippy --version;
-        cargo +nightly-2023-10-05-x86_64-unknown-linux-gnu fmt --version;
+        cargo +nightly-2024-02-01-x86_64-unknown-linux-gnu clippy --version;
+        cargo +nightly-2024-02-01-x86_64-unknown-linux-gnu fmt --version;
       shell: bash

.github/workflows/clean_code.yaml

@@ -16,7 +16,7 @@ jobs:
           caller-workflow-name: clippy_and_udeps_check
 
       - name: cargo clippy
-        run: cargo +nightly-2023-10-05-x86_64-unknown-linux-gnu clippy --all-targets
+        run: cargo +nightly-2024-02-01-x86_64-unknown-linux-gnu clippy --all-targets
 
       - name: cargo udeps
-        run: cargo +nightly-2023-10-05-x86_64-unknown-linux-gnu udeps --locked
+        run: cargo +nightly-2024-02-01-x86_64-unknown-linux-gnu udeps --locked

block_engine/src/block_engine.rs

@@ -5,7 +5,6 @@ use std::{
         atomic::{AtomicBool, Ordering},
         Arc, Mutex,
     },
-    thread,
     thread::{Builder, JoinHandle},
     time::{Duration, Instant, SystemTime},
 };
@@ -53,6 +52,11 @@ use tonic::{
 
 use crate::block_engine_stats::BlockEngineStats;
 
+pub struct BlockEngineConfig {
+    pub block_engine_url: String,
+    pub auth_service_url: String,
+}
+
 #[derive(Clone)]
 struct AuthInterceptor {
     access_token: Arc<Mutex<Token>>,
@@ -95,16 +99,15 @@ pub type BlockEngineResult<T> = Result<T, BlockEngineError>;
 
 /// Attempts to maintain a connection to a Block Engine and forward packets to it
 pub struct BlockEngineRelayerHandler {
-    block_engine_forwarder: JoinHandle<()>,
+    block_engine_forwarder: Option<JoinHandle<()>>,
 }
 
 impl BlockEngineRelayerHandler {
     const BLOCK_ENGINE_PACKET_QUEUE_CAPACITY: usize = 1_000;
 
     #[allow(clippy::too_many_arguments)]
     pub fn new(
-        block_engine_url: String,
-        auth_service_url: String,
+        block_engine_config: Option<BlockEngineConfig>,
         mut block_engine_receiver: Receiver<BlockEnginePackets>,
         keypair: Arc<Keypair>,
         exit: Arc<AtomicBool>,
@@ -114,46 +117,50 @@ impl BlockEngineRelayerHandler {
         ofac_addresses: HashSet<Pubkey>,
     ) -> BlockEngineRelayerHandler {
         let is_connected_to_block_engine = is_connected_to_block_engine.clone();
-        let block_engine_forwarder = Builder::new()
-            .name("block_engine_relayer_handler_thread".into())
-            .spawn(move || {
-                let rt = Runtime::new().unwrap();
-                rt.block_on(async move {
-                    while !exit.load(Ordering::Relaxed) {
-                        let result = Self::auth_and_connect(
-                            &block_engine_url,
-                            &auth_service_url,
-                            &mut block_engine_receiver,
-                            &keypair,
-                            &exit,
-                            aoi_cache_ttl_s,
-                            &address_lookup_table_cache,
-                            &is_connected_to_block_engine,
-                            &ofac_addresses,
-                        )
-                        .await;
-                        is_connected_to_block_engine.store(false, Ordering::Relaxed);
-
-                        if let Err(e) = result {
-                            error!("error authenticating and connecting: {:?}", e);
-                            datapoint_error!("block_engine_relayer-error",
-                                "block_engine_url" => block_engine_url,
-                                "auth_service_url" => auth_service_url,
-                                ("error", e.to_string(), String)
-                            );
-                            sleep(Duration::from_secs(2)).await;
+        let block_engine_forwarder = block_engine_config.map(|config| {
+            Builder::new()
+                .name("block_engine_relayer_handler_thread".into())
+                .spawn(move || {
+                    let rt = Runtime::new().unwrap();
+                    rt.block_on(async move {
+                        while !exit.load(Ordering::Relaxed) {
+                            let result = Self::auth_and_connect(
+                                &config.block_engine_url,
+                                &config.auth_service_url,
+                                &mut block_engine_receiver,
+                                &keypair,
+                                &exit,
+                                aoi_cache_ttl_s,
+                                &address_lookup_table_cache,
+                                &is_connected_to_block_engine,
+                                &ofac_addresses,
+                            )
+                            .await;
+                            is_connected_to_block_engine.store(false, Ordering::Relaxed);
+
+                            if let Err(e) = result {
+                                error!("error authenticating and connecting: {:?}", e);
+                                datapoint_error!("block_engine_relayer-error",
+                                    "block_engine_url" => &config.block_engine_url,
+                                    "auth_service_url" => &config.auth_service_url,
+                                    ("error", e.to_string(), String)
+                                );
+                                sleep(Duration::from_secs(2)).await;
+                            }
                         }
-                    }
-                });
-            })
-            .unwrap();
+                    });
+                })
+                .unwrap()
+        });
         BlockEngineRelayerHandler {
             block_engine_forwarder,
         }
     }
 
-    pub fn join(self) -> thread::Result<()> {
-        self.block_engine_forwarder.join()
+    pub fn join(self) {
+        if let Some(forwarder) = self.block_engine_forwarder {
+            forwarder.join().unwrap()
+        }
     }
 
     /// Relayers are whitelisted in the block engine. In order to auth, a challenge-response handshake

core/src/ofac.rs

@@ -55,11 +55,9 @@ fn is_ofac_address_in_lookup_table(
 
 #[cfg(test)]
 mod tests {
-    use std::{collections::HashSet, sync::Arc, time::Duration};
+    use std::collections::HashSet;
 
-    use crossbeam_channel::unbounded;
     use dashmap::DashMap;
-    use solana_perf::packet::PacketBatch;
     use solana_sdk::{
         address_lookup_table_account::AddressLookupTableAccount,
         hash::Hash,
@@ -167,7 +165,7 @@ mod tests {
 
         let lookup_table_pubkey = Pubkey::new_unique();
         let lookup_table = AddressLookupTableAccount {
-            key: lookup_table_pubkey.clone(),
+            key: lookup_table_pubkey,
             addresses: vec![ofac_pubkey, Pubkey::new_unique()],
         };
 
@@ -281,7 +279,7 @@ mod tests {
             Hash::default(),
         );
         let random_tx = VersionedTransaction::from(random_tx);
-        let random_packet = Packet::from_data(None, &random_tx).expect("can create packet");
+        let random_packet = Packet::from_data(None, random_tx).expect("can create packet");
 
         let ofac_tx = Transaction::new_signed_with_payer(
             &[Instruction::new_with_bytes(
@@ -298,7 +296,7 @@ mod tests {
             Hash::default(),
         );
         let ofac_tx = VersionedTransaction::from(ofac_tx);
-        let ofac_packet = Packet::from_data(None, &ofac_tx).expect("can create packet");
+        let ofac_packet = Packet::from_data(None, ofac_tx).expect("can create packet");
 
         assert!(!is_tx_ofac_related(
             &random_packet.deserialize_slice(..).unwrap(),

rust-toolchain.toml

@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.73.0"
+channel = "1.76.0"

transaction-relayer/src/forwarder.rs

@@ -25,6 +25,7 @@ pub fn start_forward_and_delay_thread(
     packet_delay_ms: u32,
     block_engine_sender: tokio::sync::mpsc::Sender<BlockEnginePackets>,
     num_threads: u64,
+    disable_mempool: bool,
     exit: &Arc<AtomicBool>,
 ) -> Vec<JoinHandle<()>> {
     const SLEEP_DURATION: Duration = Duration::from_millis(5);
@@ -77,23 +78,26 @@ pub fn start_forward_and_delay_thread(
 
                                 // try_send because the block engine receiver only drains when it's connected
                                 // and we don't want to OOM on packet_receiver
-                                match block_engine_sender.try_send(BlockEnginePackets {
-                                    banking_packet_batch: banking_packet_batch.clone(),
-                                    stamp: system_time,
-                                    expiration: packet_delay_ms,
-                                }) {
-                                    Ok(_) => {
-                                        forwarder_metrics.num_be_packets_forwarded += num_packets;
-                                    }
-                                    Err(TrySendError::Closed(_)) => {
-                                        panic!(
-                                            "error sending packet batch to block engine handler"
-                                        );
-                                    }
-                                    Err(TrySendError::Full(_)) => {
-                                        // block engine most likely not connected
-                                        forwarder_metrics.num_be_packets_dropped += num_packets;
-                                        forwarder_metrics.num_be_sender_full += 1;
+                                if !disable_mempool {
+                                    match block_engine_sender.try_send(BlockEnginePackets {
+                                        banking_packet_batch: banking_packet_batch.clone(),
+                                        stamp: system_time,
+                                        expiration: packet_delay_ms,
+                                    }) {
+                                        Ok(_) => {
+                                            forwarder_metrics.num_be_packets_forwarded +=
+                                                num_packets;
+                                        }
+                                        Err(TrySendError::Closed(_)) => {
+                                            panic!(
+                                                "error sending packet batch to block engine handler"
+                                            );
+                                        }
+                                        Err(TrySendError::Full(_)) => {
+                                            // block engine most likely not connected
+                                            forwarder_metrics.num_be_packets_dropped += num_packets;
+                                            forwarder_metrics.num_be_sender_full += 1;
+                                        }
                                     }
                                 }
                                 buffered_packet_batches.push_back(RelayerPacketBatches {

transaction-relayer/src/main.rs

@@ -17,7 +17,7 @@ use clap::Parser;
 use crossbeam_channel::tick;
 use dashmap::DashMap;
 use env_logger::Env;
-use jito_block_engine::block_engine::BlockEngineRelayerHandler;
+use jito_block_engine::block_engine::{BlockEngineConfig, BlockEngineRelayerHandler};
 use jito_core::{
     graceful_panic,
     tpu::{Tpu, TpuSockets},
@@ -50,6 +50,8 @@ use tikv_jemallocator::Jemalloc;
 use tokio::{runtime::Builder, signal, sync::mpsc::channel};
 use tonic::transport::Server;
 
+// no-op change to test ci
+
 #[global_allocator]
 static GLOBAL: Jemalloc = Jemalloc;
 
@@ -117,7 +119,7 @@ struct Args {
     /// Address for Jito Block Engine.
     /// See https://jito-labs.gitbook.io/mev/searcher-resources/block-engine#connection-details
     #[arg(long, env)]
-    block_engine_url: String,
+    block_engine_url: Option<String>,
 
     /// Manual override for authentication service address of the block-engine.
     /// Defaults to `--block-engine-url`
@@ -194,6 +196,10 @@ struct Args {
     /// Number of packets to send in each packet batch to the validator
     #[arg(long, env, default_value_t = 4)]
     validator_packet_batch_size: usize,
+
+    /// Disable Mempool forwarding
+    #[arg(long, env, default_value_t = false)]
+    disable_mempool: bool,
 }
 
 #[derive(Debug)]
@@ -356,14 +362,25 @@ fn main() {
         args.packet_delay_ms,
         block_engine_sender,
         1,
+        args.disable_mempool,
         &exit,
     );
 
     let is_connected_to_block_engine = Arc::new(AtomicBool::new(false));
+    let block_engine_config = if !args.disable_mempool && args.block_engine_url.is_some() {
+        let block_engine_url = args.block_engine_url.unwrap();
+        let auth_service_url = args
+            .block_engine_auth_service_url
+            .unwrap_or(block_engine_url.clone());
+        Some(BlockEngineConfig {
+            block_engine_url,
+            auth_service_url,
+        })
+    } else {
+        None
+    };
     let block_engine_forwarder = BlockEngineRelayerHandler::new(
-        args.block_engine_url.clone(),
-        args.block_engine_auth_service_url
-            .unwrap_or(args.block_engine_url),
+        block_engine_config,
         block_engine_receiver,
         keypair,
         exit.clone(),
@@ -479,7 +496,7 @@ fn main() {
         t.join().unwrap();
     }
     lookup_table_refresher.join().unwrap();
-    block_engine_forwarder.join().unwrap();
+    block_engine_forwarder.join();
 }
 
 pub async fn shutdown_signal(exit: Arc<AtomicBool>) {