Single ParachainBlockImport instance

client/consensus/aura/src/import_queue.rs

@@ -17,6 +17,7 @@
 //! Parachain specific wrapper for the AuRa import queue.
 
 use codec::Codec;
+use cumulus_client_consensus_common::ParachainBlockImport;
 use sc_client_api::{backend::AuxStore, BlockOf, UsageProvider};
 use sc_consensus::{import_queue::DefaultImportQueue, BlockImport};
 use sc_consensus_aura::AuraVerifier;
@@ -33,10 +34,10 @@ use sp_runtime::traits::Block as BlockT;
 use std::{fmt::Debug, hash::Hash, sync::Arc};
 use substrate_prometheus_endpoint::Registry;
 
-/// Parameters of [`import_queue`].
+/// Parameters for [`import_queue`].
 pub struct ImportQueueParams<'a, I, C, CIDP, S> {
 	/// The block import to use.
-	pub block_import: I,
+	pub block_import: ParachainBlockImport<I>,
 	/// The client to interact with the chain.
 	pub client: Arc<C>,
 	/// The inherent data providers, to create the inherent data.
@@ -83,7 +84,7 @@ where
 	CIDP::InherentDataProviders: InherentDataProviderExt + Send + Sync,
 {
 	sc_consensus_aura::import_queue::<P, _, _, _, _, _>(sc_consensus_aura::ImportQueueParams {
-		block_import: cumulus_client_consensus_common::ParachainBlockImport::new(block_import),
+		block_import,
 		justification_import: None,
 		client,
 		create_inherent_data_providers,

client/consensus/aura/src/lib.rs

@@ -71,6 +71,22 @@ impl<B, CIDP, W> Clone for AuraConsensus<B, CIDP, W> {
 	}
 }
 
+/// Parameters of [`AuraConsensus::build`].
+pub struct BuildAuraConsensusParams<PF, BI, CIDP, Client, BS, SO> {
+	pub proposer_factory: PF,
+	pub create_inherent_data_providers: CIDP,
+	pub block_import: ParachainBlockImport<BI>,
+	pub para_client: Arc<Client>,
+	pub backoff_authoring_blocks: Option<BS>,
+	pub sync_oracle: SO,
+	pub keystore: SyncCryptoStorePtr,
+	pub force_authoring: bool,
+	pub slot_duration: SlotDuration,
+	pub telemetry: Option<TelemetryHandle>,
+	pub block_proposal_slot_portion: SlotProportion,
+	pub max_block_proposal_slot_portion: Option<SlotProportion>,
+}
+
 impl<B, CIDP> AuraConsensus<B, CIDP, ()>
 where
 	B: BlockT,
@@ -117,7 +133,7 @@ where
 		let worker = sc_consensus_aura::build_aura_worker::<P, _, _, _, _, _, _, _, _>(
 			BuildAuraWorkerParams {
 				client: para_client,
-				block_import: ParachainBlockImport::new(block_import),
+				block_import,
 				justification_sync_link: (),
 				proposer_factory,
 				sync_oracle,
@@ -216,19 +232,3 @@ where
 		Some(ParachainCandidate { block: res.block, proof: res.storage_proof })
 	}
 }
-
-/// Parameters of [`AuraConsensus::build`].
-pub struct BuildAuraConsensusParams<PF, BI, CIDP, Client, BS, SO> {
-	pub proposer_factory: PF,
-	pub create_inherent_data_providers: CIDP,
-	pub block_import: BI,
-	pub para_client: Arc<Client>,
-	pub backoff_authoring_blocks: Option<BS>,
-	pub sync_oracle: SO,
-	pub keystore: SyncCryptoStorePtr,
-	pub force_authoring: bool,
-	pub slot_duration: SlotDuration,
-	pub telemetry: Option<TelemetryHandle>,
-	pub block_proposal_slot_portion: SlotProportion,
-	pub max_block_proposal_slot_portion: Option<SlotProportion>,
-}

client/consensus/common/src/lib.rs

@@ -83,6 +83,12 @@ impl<I> ParachainBlockImport<I> {
 	}
 }
 
+impl<I: Clone> Clone for ParachainBlockImport<I> {
+	fn clone(&self) -> Self {
+		ParachainBlockImport(self.0.clone())
+	}
+}
+
 #[async_trait::async_trait]
 impl<Block, I> BlockImport<Block> for ParachainBlockImport<I>
 where

client/consensus/relay-chain/src/import_queue.rs

@@ -16,6 +16,8 @@
 
 use std::{marker::PhantomData, sync::Arc};
 
+use cumulus_client_consensus_common::ParachainBlockImport;
+
 use sc_consensus::{
 	import_queue::{BasicQueue, Verifier as VerifierT},
 	BlockImport, BlockImportParams,
@@ -103,7 +105,7 @@ where
 /// Start an import queue for a Cumulus collator that does not uses any special authoring logic.
 pub fn import_queue<Client, Block: BlockT, I, CIDP>(
 	client: Arc<Client>,
-	block_import: I,
+	block_import: ParachainBlockImport<I>,
 	create_inherent_data_providers: CIDP,
 	spawner: &impl sp_core::traits::SpawnEssentialNamed,
 	registry: Option<&substrate_prometheus_endpoint::Registry>,
@@ -117,11 +119,5 @@ where
 {
 	let verifier = Verifier::new(client, create_inherent_data_providers);
 
-	Ok(BasicQueue::new(
-		verifier,
-		Box::new(cumulus_client_consensus_common::ParachainBlockImport::new(block_import)),
-		None,
-		spawner,
-		registry,
-	))
+	Ok(BasicQueue::new(verifier, Box::new(block_import), None, spawner, registry))
 }

client/consensus/relay-chain/src/lib.rs

@@ -90,16 +90,14 @@ where
 		para_id: ParaId,
 		proposer_factory: PF,
 		create_inherent_data_providers: CIDP,
-		block_import: BI,
+		block_import: ParachainBlockImport<BI>,
 		relay_chain_interface: RCInterface,
 	) -> Self {
 		Self {
 			para_id,
 			proposer_factory: Arc::new(Mutex::new(proposer_factory)),
 			create_inherent_data_providers: Arc::new(create_inherent_data_providers),
-			block_import: Arc::new(futures::lock::Mutex::new(ParachainBlockImport::new(
-				block_import,
-			))),
+			block_import: Arc::new(futures::lock::Mutex::new(block_import)),
 			relay_chain_interface,
 			_phantom: PhantomData,
 		}
@@ -222,7 +220,7 @@ pub struct BuildRelayChainConsensusParams<PF, BI, CIDP, RCInterface> {
 	pub para_id: ParaId,
 	pub proposer_factory: PF,
 	pub create_inherent_data_providers: CIDP,
-	pub block_import: BI,
+	pub block_import: ParachainBlockImport<BI>,
 	pub relay_chain_interface: RCInterface,
 }
 

parachain-template/node/src/command.rs

@@ -220,7 +220,6 @@ pub fn run() -> Result<()> {
 					let partials = new_partial(&config)?;
 					let db = partials.backend.expose_db();
 					let storage = partials.backend.expose_storage();
-
 					cmd.run(config, partials.client.clone(), db, storage)
 				}),
 				BenchmarkCmd::Machine(cmd) =>

parachain-template/node/src/service.rs

@@ -9,7 +9,9 @@ use parachain_template_runtime::{opaque::Block, Hash, RuntimeApi};
 
 // Cumulus Imports
 use cumulus_client_consensus_aura::{AuraConsensus, BuildAuraConsensusParams, SlotProportion};
-use cumulus_client_consensus_common::ParachainConsensus;
+use cumulus_client_consensus_common::{
+	ParachainBlockImport as TParachainBlockImport, ParachainConsensus,
+};
 use cumulus_client_network::BlockAnnounceValidator;
 use cumulus_client_service::{
 	prepare_node_config, start_collator, start_full_node, StartCollatorParams, StartFullNodeParams,
@@ -51,6 +53,8 @@ type ParachainClient = TFullClient<Block, RuntimeApi, ParachainExecutor>;
 
 type ParachainBackend = TFullBackend<Block>;
 
+type ParachainBlockImport = TParachainBlockImport<Arc<ParachainClient>>;
+
 /// Starts a `ServiceBuilder` for a full service.
 ///
 /// Use this macro if you don't actually need the full service, but just the builder in order to
@@ -64,7 +68,7 @@ pub fn new_partial(
 		(),
 		sc_consensus::DefaultImportQueue<Block, ParachainClient>,
 		sc_transaction_pool::FullPool<Block, ParachainClient>,
-		(Option<Telemetry>, Option<TelemetryWorkerHandle>),
+		(ParachainBlockImport, Option<Telemetry>, Option<TelemetryWorkerHandle>),
 	>,
 	sc_service::Error,
 > {
@@ -109,8 +113,11 @@ pub fn new_partial(
 		client.clone(),
 	);
 
+	let block_import = ParachainBlockImport::new(client.clone());
+
 	let import_queue = build_import_queue(
 		client.clone(),
+		block_import.clone(),
 		config,
 		telemetry.as_ref().map(|telemetry| telemetry.handle()),
 		&task_manager,
@@ -124,7 +131,7 @@ pub fn new_partial(
 		task_manager,
 		transaction_pool,
 		select_chain: (),
-		other: (telemetry, telemetry_worker_handle),
+		other: (block_import, telemetry, telemetry_worker_handle),
 	})
 }
 
@@ -163,7 +170,7 @@ async fn start_node_impl(
 	let parachain_config = prepare_node_config(parachain_config);
 
 	let params = new_partial(&parachain_config)?;
-	let (mut telemetry, telemetry_worker_handle) = params.other;
+	let (block_import, mut telemetry, telemetry_worker_handle) = params.other;
 
 	let client = params.client.clone();
 	let backend = params.backend.clone();
@@ -255,6 +262,7 @@ async fn start_node_impl(
 	if validator {
 		let parachain_consensus = build_consensus(
 			client.clone(),
+			block_import,
 			prometheus_registry.as_ref(),
 			telemetry.as_ref().map(|t| t.handle()),
 			&task_manager,
@@ -304,6 +312,7 @@ async fn start_node_impl(
 /// Build the import queue for the parachain runtime.
 fn build_import_queue(
 	client: Arc<ParachainClient>,
+	block_import: ParachainBlockImport,
 	config: &Configuration,
 	telemetry: Option<TelemetryHandle>,
 	task_manager: &TaskManager,
@@ -318,8 +327,8 @@ fn build_import_queue(
 		_,
 		_,
 	>(cumulus_client_consensus_aura::ImportQueueParams {
-		block_import: client.clone(),
-		client: client.clone(),
+		block_import,
+		client,
 		create_inherent_data_providers: move |_, _| async move {
 			let timestamp = sp_timestamp::InherentDataProvider::from_system_time();
 
@@ -340,6 +349,7 @@ fn build_import_queue(
 
 fn build_consensus(
 	client: Arc<ParachainClient>,
+	block_import: ParachainBlockImport,
 	prometheus_registry: Option<&Registry>,
 	telemetry: Option<TelemetryHandle>,
 	task_manager: &TaskManager,
@@ -389,7 +399,7 @@ fn build_consensus(
 				Ok((slot, timestamp, parachain_inherent))
 			}
 		},
-		block_import: client.clone(),
+		block_import,
 		para_client: client,
 		backoff_authoring_blocks: Option::<()>::None,
 		sync_oracle,