Export unified ParachainHostFunctions (#3854)

This PR exports unified hostfunctions needed for parachains. Basicaly
`SubstrateHostFunctions` + `storage_proof_size::HostFunctions`.

Also removes the native executor from the parachain template.

---------

Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>

Cargo.lock

@@ -3803,6 +3803,7 @@ dependencies = [
  "sp-blockchain",
  "sp-consensus",
  "sp-core",
+ "sp-io",
  "sp-runtime",
  "sp-transaction-pool",
 ]

cumulus/client/service/Cargo.toml

@@ -30,6 +30,7 @@ sp-consensus = { path = "../../../substrate/primitives/consensus/common" }
 sp-core = { path = "../../../substrate/primitives/core" }
 sp-runtime = { path = "../../../substrate/primitives/runtime" }
 sp-transaction-pool = { path = "../../../substrate/primitives/transaction-pool" }
+sp-io = { path = "../../../substrate/primitives/io" }
 
 # Polkadot
 polkadot-primitives = { path = "../../../polkadot/primitives" }

cumulus/client/service/src/lib.rs

@@ -54,6 +54,15 @@ use std::{sync::Arc, time::Duration};
 
 pub use cumulus_primitives_proof_size_hostfunction::storage_proof_size;
 
+/// Host functions that should be used in parachain nodes.
+///
+/// Contains the standard substrate host functions, as well as a
+/// host function to enable PoV-reclaim on parachain nodes.
+pub type ParachainHostFunctions = (
+	cumulus_primitives_proof_size_hostfunction::storage_proof_size::HostFunctions,
+	sp_io::SubstrateHostFunctions,
+);
+
 // Given the sporadic nature of the explicit recovery operation and the
 // possibility to retry infinite times this value is more than enough.
 // In practice here we expect no more than one queued messages.

cumulus/polkadot-parachain/src/service.rs

@@ -69,13 +69,11 @@ use substrate_prometheus_endpoint::Registry;
 use polkadot_primitives::CollatorPair;
 
 #[cfg(not(feature = "runtime-benchmarks"))]
-type HostFunctions =
+type HostFunctions = cumulus_client_service::ParachainHostFunctions;
-	(sp_io::SubstrateHostFunctions, cumulus_client_service::storage_proof_size::HostFunctions);
 
 #[cfg(feature = "runtime-benchmarks")]
 type HostFunctions = (
-	sp_io::SubstrateHostFunctions,
+	cumulus_client_service::ParachainHostFunctions,
-	cumulus_client_service::storage_proof_size::HostFunctions,
 	frame_benchmarking::benchmarking::HostFunctions,
 );
 

prdoc/pr_3854.prdoc

@@ -0,0 +1,15 @@
+# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
+# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json
+
+title: Export unified `ParachainHostFunctions` from `cumulus-client-service`
+
+doc:
+  - audience: Node Dev
+    description: |
+      Exports `ParachainHostFunctions` to have a bundled version of `SubstrateHostFunctions` and
+      `cumulus_primitives_proof_size_hostfunction::storage_proof_size::HostFunctions`. This increases discoverability and makes
+      it more obvious that they should be used together in parachain nodes.
+
+crates:
+  - name: cumulus-client-service
+    bump: minor

templates/parachain/node/src/service.rs

@@ -16,7 +16,8 @@ use cumulus_client_consensus_common::ParachainBlockImport as TParachainBlockImpo
 use cumulus_client_consensus_proposer::Proposer;
 use cumulus_client_service::{
 	build_network, build_relay_chain_interface, prepare_node_config, start_relay_chain_tasks,
-	BuildNetworkParams, CollatorSybilResistance, DARecoveryProfile, StartRelayChainTasksParams,
+	BuildNetworkParams, CollatorSybilResistance, DARecoveryProfile, ParachainHostFunctions,
+	StartRelayChainTasksParams,
 };
 use cumulus_primitives_core::{relay_chain::CollatorPair, ParaId};
 use cumulus_relay_chain_interface::{OverseerHandle, RelayChainInterface};
@@ -25,9 +26,7 @@ use cumulus_relay_chain_interface::{OverseerHandle, RelayChainInterface};
 use frame_benchmarking_cli::SUBSTRATE_REFERENCE_HARDWARE;
 use sc_client_api::Backend;
 use sc_consensus::ImportQueue;
-use sc_executor::{
+use sc_executor::{HeapAllocStrategy, WasmExecutor, DEFAULT_HEAP_ALLOC_STRATEGY};
-	HeapAllocStrategy, NativeElseWasmExecutor, WasmExecutor, DEFAULT_HEAP_ALLOC_STRATEGY,
-};
 use sc_network::NetworkBlock;
 use sc_network_sync::SyncingService;
 use sc_service::{Configuration, PartialComponents, TFullBackend, TFullClient, TaskManager};
@@ -36,25 +35,7 @@ use sc_transaction_pool_api::OffchainTransactionPoolFactory;
 use sp_keystore::KeystorePtr;
 use substrate_prometheus_endpoint::Registry;
 
-/// Native executor type.
+type ParachainExecutor = WasmExecutor<ParachainHostFunctions>;
-pub struct ParachainNativeExecutor;
-
-impl sc_executor::NativeExecutionDispatch for ParachainNativeExecutor {
-	type ExtendHostFunctions = (
-		cumulus_client_service::storage_proof_size::HostFunctions,
-		frame_benchmarking::benchmarking::HostFunctions,
-	);
-
-	fn dispatch(method: &str, data: &[u8]) -> Option<Vec<u8>> {
-		parachain_template_runtime::apis::api::dispatch(method, data)
-	}
-
-	fn native_version() -> sc_executor::NativeVersion {
-		parachain_template_runtime::native_version()
-	}
-}
-
-type ParachainExecutor = NativeElseWasmExecutor<ParachainNativeExecutor>;
 
 type ParachainClient = TFullClient<Block, RuntimeApi, ParachainExecutor>;
 
@@ -92,7 +73,7 @@ pub fn new_partial(config: &Configuration) -> Result<Service, sc_service::Error>
 		.default_heap_pages
 		.map_or(DEFAULT_HEAP_ALLOC_STRATEGY, |h| HeapAllocStrategy::Static { extra_pages: h as _ });
 
-	let wasm = WasmExecutor::builder()
+	let executor = ParachainExecutor::builder()
 		.with_execution_method(config.wasm_method)
 		.with_onchain_heap_alloc_strategy(heap_pages)
 		.with_offchain_heap_alloc_strategy(heap_pages)
@@ -100,8 +81,6 @@ pub fn new_partial(config: &Configuration) -> Result<Service, sc_service::Error>
 		.with_runtime_cache_size(config.runtime_cache_size)
 		.build();
 
-	let executor = ParachainExecutor::new_with_wasm_executor(wasm);
-
 	let (client, backend, keystore_container, task_manager) =
 		sc_service::new_full_parts_record_import::<Block, RuntimeApi, _>(
 			config,