feat: make txpool rpc optional

client/rpc-core/Cargo.toml

@@ -17,3 +17,6 @@ jsonrpsee = { workspace = true, features = ["server", "macros"] }
 rustc-hex = "2.1.0"
 serde = { workspace = true }
 serde_json = { workspace = true }
+
+[features]
+txpool = []

client/rpc-core/src/lib.rs

@@ -23,13 +23,15 @@ pub mod types;
 mod eth;
 mod eth_pubsub;
 mod net;
+#[cfg(feature = "txpool")]
 mod txpool;
 mod web3;
 
+#[cfg(feature = "txpool")]
+pub use self::txpool::TxPoolApiServer;
 pub use self::{
 	eth::{EthApiServer, EthFilterApiServer},
 	eth_pubsub::EthPubSubApiServer,
 	net::NetApiServer,
-	txpool::TxPoolApiServer,
 	web3::Web3ApiServer,
 };

client/rpc-core/src/types/call_request.rs

@@ -18,11 +18,12 @@
 
 use std::collections::BTreeMap;
 
-use crate::types::{deserialize_data_or_input, Bytes};
 use ethereum::AccessListItem;
 use ethereum_types::{H160, H256, U256};
 use serde::Deserialize;
 
+use crate::types::{deserialize_data_or_input, Bytes};
+
 /// Call request
 #[derive(Clone, Debug, Default, Eq, PartialEq, Deserialize)]
 #[serde(deny_unknown_fields)]

client/rpc-core/src/types/mod.rs

@@ -31,13 +31,16 @@ mod receipt;
 mod sync;
 mod transaction;
 mod transaction_request;
+#[cfg(feature = "txpool")]
 mod txpool;
 mod work;
 
 pub mod pubsub;
 
 use serde::{de::Error, Deserialize, Deserializer};
 
+#[cfg(feature = "txpool")]
+pub use self::txpool::{Get, Summary, TransactionMap, TxPoolResult, TxPoolTransaction};
 pub use self::{
 	account_info::{AccountInfo, EthAccount, ExtAccountInfo, RecoveredAccount, StorageProof},
 	block::{Block, BlockTransactions, Header, Rich, RichBlock, RichHeader},
@@ -58,7 +61,6 @@ pub use self::{
 	},
 	transaction::{LocalTransactionStatus, RichRawTransaction, Transaction},
 	transaction_request::{TransactionMessage, TransactionRequest},
-	txpool::{Get, Summary, TransactionMap, TxPoolResult, TxPoolTransaction},
 	work::Work,
 };
 

client/rpc-core/src/types/txpool.rs

@@ -21,7 +21,7 @@ use std::collections::HashMap;
 use ethereum::{TransactionAction, TransactionV2 as EthereumTransaction};
 use ethereum_types::{H160, H256, U256};
 use serde::{Serialize, Serializer};
-// Frontier
+
 use crate::types::Bytes;
 
 pub type TransactionMap<T> = HashMap<H160, HashMap<U256, T>>;

client/rpc/Cargo.toml

@@ -73,4 +73,5 @@ rocksdb = [
 	"fc-db/rocksdb",
 	"fc-mapping-sync/rocksdb",
 ]
+txpool = ["fc-rpc-core/txpool"]
 rpc-binary-search-estimate = []

client/rpc/src/eth/filter.rs

@@ -23,7 +23,8 @@ use ethereum_types::{H256, U256};
 use jsonrpsee::core::{async_trait, RpcResult};
 // Substrate
 use sc_client_api::backend::{Backend, StorageProvider};
-use sc_transaction_pool::ChainApi;
+use sc_transaction_pool::{ChainApi, Pool};
+use sc_transaction_pool_api::InPoolTransaction;
 use sp_api::ProvideRuntimeApi;
 use sp_blockchain::HeaderBackend;
 use sp_core::hashing::keccak_256;
@@ -35,12 +36,12 @@ use sp_runtime::{
 use fc_rpc_core::{types::*, EthFilterApiServer};
 use fp_rpc::{EthereumRuntimeRPCApi, TransactionStatus};
 
-use crate::{eth::cache::EthBlockDataCacheTask, frontier_backend_client, internal_err, TxPool};
+use crate::{eth::cache::EthBlockDataCacheTask, frontier_backend_client, internal_err};
 
 pub struct EthFilter<B: BlockT, C, BE, A: ChainApi> {
 	client: Arc<C>,
 	backend: Arc<dyn fc_db::BackendReader<B> + Send + Sync>,
-	tx_pool: TxPool<B, C, A>,
+	graph: Arc<Pool<A>>,
 	filter_pool: FilterPool,
 	max_stored_filters: usize,
 	max_past_logs: u32,
@@ -52,7 +53,7 @@ impl<B: BlockT, C, BE, A: ChainApi> EthFilter<B, C, BE, A> {
 	pub fn new(
 		client: Arc<C>,
 		backend: Arc<dyn fc_db::BackendReader<B> + Send + Sync>,
-		tx_pool: TxPool<B, C, A>,
+		graph: Arc<Pool<A>>,
 		filter_pool: FilterPool,
 		max_stored_filters: usize,
 		max_past_logs: u32,
@@ -61,7 +62,7 @@ impl<B: BlockT, C, BE, A: ChainApi> EthFilter<B, C, BE, A> {
 		Self {
 			client,
 			backend,
-			tx_pool,
+			graph,
 			filter_pool,
 			max_stored_filters,
 			max_past_logs,
@@ -80,8 +81,9 @@ where
 	A: ChainApi<Block = B> + 'static,
 {
 	fn create_filter(&self, filter_type: FilterType) -> RpcResult<U256> {
-		let block_number =
-			UniqueSaturatedInto::<u64>::unique_saturated_into(self.client.info().best_number);
+		let info = self.client.info();
+		let best_hash = info.best_hash;
+		let best_number = UniqueSaturatedInto::<u64>::unique_saturated_into(info.best_number);
 		let pool = self.filter_pool.clone();
 		let response = if let Ok(locked) = &mut pool.lock() {
 			if locked.len() >= self.max_stored_filters {
@@ -97,24 +99,35 @@ where
 				Some((k, _)) => *k,
 				None => U256::zero(),
 			};
+
 			let pending_transaction_hashes = if let FilterType::PendingTransaction = filter_type {
-				self.tx_pool
-					.tx_pool_response()?
-					.ready
+				let txs_ready = self
+					.graph
+					.validated_pool()
+					.ready()
+					.map(|in_pool_tx| in_pool_tx.data().clone())
+					.collect();
+				// Use the runtime to match the (here) opaque extrinsics against ethereum transactions.
+				let api = self.client.runtime_api();
+				api.extrinsic_filter(best_hash, txs_ready)
+					.map_err(|err| {
+						internal_err(format!("fetch ready transactions failed: {err:?}"))
+					})?
 					.into_iter()
 					.map(|tx| tx.hash())
-					.collect()
+					.collect::<HashSet<_>>()
 			} else {
 				HashSet::new()
 			};
+
 			// Assume `max_stored_filters` is always < U256::max.
 			let key = last_key.checked_add(U256::one()).unwrap();
 			locked.insert(
 				key,
 				FilterPoolItem {
-					last_poll: BlockNumber::Num(block_number),
+					last_poll: BlockNumber::Num(best_number),
 					filter_type,
-					at_block: block_number,
+					at_block: best_number,
 					pending_transaction_hashes,
 				},
 			);
@@ -174,8 +187,9 @@ where
 		}
 
 		let key = U256::from(index.value());
-		let block_number =
-			UniqueSaturatedInto::<u64>::unique_saturated_into(self.client.info().best_number);
+		let info = self.client.info();
+		let best_hash = info.best_hash;
+		let best_number = UniqueSaturatedInto::<u64>::unique_saturated_into(info.best_number);
 		let pool = self.filter_pool.clone();
 		// Try to lock.
 		let path = if let Ok(locked) = &mut pool.lock() {
@@ -185,7 +199,7 @@ where
 					// For each block created since last poll, get a vector of ethereum hashes.
 					FilterType::Block => {
 						let last = pool_item.last_poll.to_min_block_num().unwrap();
-						let next = block_number + 1;
+						let next = best_number + 1;
 						// Update filter `last_poll`.
 						locked.insert(
 							key,
@@ -201,19 +215,28 @@ where
 					}
 					FilterType::PendingTransaction => {
 						let previous_hashes = pool_item.pending_transaction_hashes;
-						let current_hashes: HashSet<H256> = self
-							.tx_pool
-							.tx_pool_response()?
-							.ready
+						let txs_ready = self
+							.graph
+							.validated_pool()
+							.ready()
+							.map(|in_pool_tx| in_pool_tx.data().clone())
+							.collect();
+						// Use the runtime to match the (here) opaque extrinsics against ethereum transactions.
+						let api = self.client.runtime_api();
+						let current_hashes = api
+							.extrinsic_filter(best_hash, txs_ready)
+							.map_err(|err| {
+								internal_err(format!("fetch ready transactions failed: {err:?}"))
+							})?
 							.into_iter()
 							.map(|tx| tx.hash())
-							.collect();
+							.collect::<HashSet<_>>();
 
 						// Update filter `last_poll`.
 						locked.insert(
 							key,
 							FilterPoolItem {
-								last_poll: BlockNumber::Num(block_number + 1),
+								last_poll: BlockNumber::Num(best_number + 1),
 								filter_type: pool_item.filter_type.clone(),
 								at_block: pool_item.at_block,
 								pending_transaction_hashes: current_hashes.clone(),
@@ -233,7 +256,7 @@ where
 						locked.insert(
 							key,
 							FilterPoolItem {
-								last_poll: BlockNumber::Num(block_number + 1),
+								last_poll: BlockNumber::Num(best_number + 1),
 								filter_type: pool_item.filter_type.clone(),
 								at_block: pool_item.at_block,
 								pending_transaction_hashes: HashSet::new(),

client/rpc/src/lib.rs

@@ -30,22 +30,24 @@ mod eth;
 mod eth_pubsub;
 mod net;
 mod signer;
+#[cfg(feature = "txpool")]
 mod txpool;
 mod web3;
 
+#[cfg(feature = "txpool")]
+pub use self::txpool::TxPool;
 pub use self::{
 	eth::{format, EstimateGasAdapter, Eth, EthBlockDataCacheTask, EthConfig, EthFilter, EthTask},
 	eth_pubsub::{EthPubSub, EthereumSubIdProvider},
 	net::Net,
 	signer::{EthDevSigner, EthSigner},
-	txpool::TxPool,
 	web3::Web3,
 };
-
 pub use ethereum::TransactionV2 as EthereumTransaction;
+#[cfg(feature = "txpool")]
+pub use fc_rpc_core::TxPoolApiServer;
 pub use fc_rpc_core::{
-	EthApiServer, EthFilterApiServer, EthPubSubApiServer, NetApiServer, TxPoolApiServer,
-	Web3ApiServer,
+	EthApiServer, EthFilterApiServer, EthPubSubApiServer, NetApiServer, Web3ApiServer,
 };
 pub use fc_storage::{
 	OverrideHandle, RuntimeApiStorageOverride, SchemaV1Override, SchemaV2Override,

template/node/Cargo.toml

@@ -89,6 +89,7 @@ default = [
 	"with-rocksdb-weights",
 	"rocksdb",
 	"sql",
+	"txpool",
 ]
 rocksdb = [
 	"sc-cli/rocksdb",
@@ -104,6 +105,7 @@ sql = [
 ]
 with-rocksdb-weights = ["frontier-template-runtime/with-rocksdb-weights"]
 with-paritydb-weights = ["frontier-template-runtime/with-paritydb-weights"]
+txpool = ["fc-rpc/txpool"]
 rpc-binary-search-estimate = ["fc-rpc/rpc-binary-search-estimate"]
 runtime-benchmarks = [
 	"frame-benchmarking/runtime-benchmarks",

template/node/src/rpc/eth.rs

@@ -17,7 +17,7 @@ use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
 use sp_core::H256;
 use sp_runtime::traits::Block as BlockT;
 // Frontier
-pub use fc_rpc::{EthBlockDataCacheTask, EthConfig, OverrideHandle, StorageOverride, TxPool};
+pub use fc_rpc::{EthBlockDataCacheTask, EthConfig, OverrideHandle, StorageOverride};
 pub use fc_rpc_core::types::{FeeHistoryCache, FeeHistoryCacheLimit, FilterPool};
 pub use fc_storage::overrides_handle;
 use fp_rpc::{ConvertTransaction, ConvertTransactionRuntimeApi, EthereumRuntimeRPCApi};
@@ -109,8 +109,10 @@ where
 {
 	use fc_rpc::{
 		Eth, EthApiServer, EthDevSigner, EthFilter, EthFilterApiServer, EthPubSub,
-		EthPubSubApiServer, EthSigner, Net, NetApiServer, TxPoolApiServer, Web3, Web3ApiServer,
+		EthPubSubApiServer, EthSigner, Net, NetApiServer, Web3, Web3ApiServer,
 	};
+	#[cfg(feature = "txpool")]
+	use fc_rpc::{TxPool, TxPoolApiServer};
 
 	let EthDeps {
 		client,
@@ -158,13 +160,12 @@ where
 		.into_rpc(),
 	)?;
 
-	let tx_pool = TxPool::new(client.clone(), graph);
 	if let Some(filter_pool) = filter_pool {
 		io.merge(
 			EthFilter::new(
 				client.clone(),
 				frontier_backend,
-				tx_pool.clone(),
+				graph.clone(),
 				filter_pool,
 				500_usize, // max stored filters
 				max_past_logs,
@@ -196,8 +197,10 @@ where
 		.into_rpc(),
 	)?;
 
-	io.merge(Web3::new(client).into_rpc())?;
-	io.merge(tx_pool.into_rpc())?;
+	io.merge(Web3::new(client.clone()).into_rpc())?;
+
+	#[cfg(feature = "txpool")]
+	io.merge(TxPool::new(client, graph).into_rpc())?;
 
 	Ok(io)
 }