Companion for paritytech/substrate#12828

client/relay-chain-inprocess-interface/src/lib.rs

@@ -369,11 +369,10 @@ pub fn build_inprocess_relay_chain(
 		hwbench,
 	)?;
 
-	let sync_oracle: Arc<dyn SyncOracle + Send + Sync> = Arc::new(full_node.network.clone());
 	let relay_chain_interface_builder = RelayChainInProcessInterfaceBuilder {
 		polkadot_client: full_node.client.clone(),
 		backend: full_node.backend.clone(),
-		sync_oracle,
+		sync_oracle: full_node.sync_service.clone(),
 		overseer_handle: full_node.overseer_handle.clone().ok_or(RelayChainError::GenericError(
 			"Overseer not running in full node.".to_string(),
 		))?,

client/relay-chain-minimal-node/src/collator_overseer.rs

@@ -56,6 +56,8 @@ pub(crate) struct CollatorOverseerGenArgs<'a> {
 	pub runtime_client: Arc<BlockChainRpcClient>,
 	/// Underlying network service implementation.
 	pub network_service: Arc<sc_network::NetworkService<Block, PHash>>,
+	/// Syncing oracle.
+	pub sync_oracle: Box<dyn sp_consensus::SyncOracle + Send>,
 	/// Underlying authority discovery service.
 	pub authority_discovery_service: AuthorityDiscoveryService,
 	/// Receiver for collation request protocol
@@ -79,6 +81,7 @@ fn build_overseer<'a>(
 	CollatorOverseerGenArgs {
 		runtime_client,
 		network_service,
+		sync_oracle,
 		authority_discovery_service,
 		collation_req_receiver,
 		available_data_req_receiver,
@@ -122,7 +125,7 @@ fn build_overseer<'a>(
 		.network_bridge_rx(NetworkBridgeRxSubsystem::new(
 			network_service.clone(),
 			authority_discovery_service.clone(),
-			Box::new(network_service.clone()),
+			sync_oracle,
 			network_bridge_metrics.clone(),
 			peer_set_protocol_names.clone(),
 		))

client/relay-chain-minimal-node/src/lib.rs

@@ -152,7 +152,7 @@ async fn new_minimal_relay_chain(
 	let (collation_req_receiver, available_data_req_receiver) =
 		build_request_response_protocol_receivers(&request_protocol_names, &mut config);
 
-	let (network, network_starter) =
+	let (network, network_starter, sync_oracle) =
 		network::build_collator_network(network::BuildCollatorNetworkParams {
 			config: &config,
 			client: relay_chain_rpc_client.clone(),
@@ -171,6 +171,7 @@ async fn new_minimal_relay_chain(
 	let overseer_args = CollatorOverseerGenArgs {
 		runtime_client: relay_chain_rpc_client.clone(),
 		network_service: network.clone(),
+		sync_oracle,
 		authority_discovery_service,
 		collation_req_receiver,
 		available_data_req_receiver,