Remove the service builder (#6557)

* :)

* Slight tidy

* Remove ServiceBuilderCommand

* Remove whitespace

* Keep task manager alive for check_block/import_blocks

* Pass task_manager to run_until_exit

* WIP

* WIP

* Get rid of the macros

* Simplify a few chain components creation APIs related to the service

* Fix basic-authorship doc tests

* Remove DefaultQueue

* Update client/service/src/builder.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Move ExecutionExtensions comment around

* Remove unused BlakeTwo256

* Add sc-prelude

* Rename sc-prelude to sc-service-prelude

* Rename to sc-service-types

* Improve service types

* Fix line widths

* Remove sc-service-types and move type definitions to crates

* Update bin/node-template/node/src/service.rs

Co-authored-by: Seun Lanlege <seunlanlege@gmail.com>

* Add TLightClientWithHash

* Rework types

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
Co-authored-by: Seun Lanlege <seunlanlege@gmail.com>

substrate/bin/node-template/node/src/command.rs

@@ -19,6 +19,8 @@ use crate::chain_spec;
 use crate::cli::Cli;
 use crate::service;
 use sc_cli::{SubstrateCli, RuntimeVersion, Role, ChainSpec};
+use sc_service::ServiceParams;
+use crate::service::new_full_params;
 
 impl SubstrateCli for Cli {
 	fn impl_name() -> String {
@@ -68,8 +70,9 @@ pub fn run() -> sc_cli::Result<()> {
 		Some(subcommand) => {
 			let runner = cli.create_runner(subcommand)?;
 			runner.run_subcommand(subcommand, |config| {
-				let (builder, _, _) = new_full_start!(config);
-				Ok(builder.to_chain_ops_parts())
+				let (ServiceParams { client, backend, task_manager, import_queue, .. }, ..)
+					= new_full_params(config)?;
+				Ok((client, backend, import_queue, task_manager))
 			})
 		}
 		None => {

substrate/bin/node-template/node/src/service.rs

@@ -2,13 +2,9 @@
 
 use std::sync::Arc;
 use std::time::Duration;
-use sc_client_api::ExecutorProvider;
-use sc_consensus::LongestChain;
-use node_template_runtime::{self, opaque::Block, RuntimeApi};
-use sc_service::{
-	error::{Error as ServiceError}, Configuration, ServiceBuilder, ServiceComponents,
-	TaskManager,
-};
+use sc_client_api::{ExecutorProvider, RemoteBackend};
+use node_template_runtime::{self, Block, RuntimeApi};
+use sc_service::{error::Error as ServiceError, Configuration, ServiceComponents, TaskManager};
 use sp_inherents::InherentDataProviders;
 use sc_executor::native_executor_instance;
 pub use sc_executor::NativeExecutor;
@@ -24,103 +20,110 @@ native_executor_instance!(
 	node_template_runtime::native_version,
 );
 
-/// 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
-/// be able to perform chain operations.
-macro_rules! new_full_start {
-	($config:expr) => {{
-		use std::sync::Arc;
-		use sp_consensus_aura::sr25519::AuthorityPair as AuraPair;
+type FullClient = sc_service::TFullClient<Block, RuntimeApi, Executor>;
+type FullBackend = sc_service::TFullBackend<Block>;
+type FullSelectChain = sc_consensus::LongestChain<FullBackend, Block>;
 
-		let mut import_setup = None;
-		let inherent_data_providers = sp_inherents::InherentDataProviders::new();
+pub fn new_full_params(config: Configuration) -> Result<(
+	sc_service::ServiceParams<
+		Block, FullClient,
+		sc_consensus_aura::AuraImportQueue<Block, FullClient>,
+		sc_transaction_pool::FullPool<Block, FullClient>,
+		(), FullBackend,
+	>,
+	FullSelectChain,
+	sp_inherents::InherentDataProviders,
+	sc_finality_grandpa::GrandpaBlockImport<FullBackend, Block, FullClient, FullSelectChain>,
+	sc_finality_grandpa::LinkHalf<Block, FullClient, FullSelectChain>
+), ServiceError> {
+	let inherent_data_providers = sp_inherents::InherentDataProviders::new();
 
-		let builder = sc_service::ServiceBuilder::new_full::<
-			node_template_runtime::opaque::Block,
-			node_template_runtime::RuntimeApi,
-			crate::service::Executor
-		>($config)?
-			.with_select_chain(|_config, backend| {
-				Ok(sc_consensus::LongestChain::new(backend.clone()))
-			})?
-			.with_transaction_pool(|builder| {
-				let pool_api = sc_transaction_pool::FullChainApi::new(
-					builder.client().clone(),
-					None,
-				);
-				Ok(sc_transaction_pool::BasicPool::new_full(
-					builder.config().transaction_pool.clone(),
-					std::sync::Arc::new(pool_api),
-					builder.prometheus_registry(),
-					builder.spawn_handle(),
-					builder.client().clone(),
-				))
-			})?
-			.with_import_queue(|
-				_config,
-				client,
-				mut select_chain,
-				_transaction_pool,
-				spawn_task_handle,
-				registry,
-			| {
-				let select_chain = select_chain.take()
-					.ok_or_else(|| sc_service::Error::SelectChainRequired)?;
+	let (client, backend, keystore, task_manager) =
+		sc_service::new_full_parts::<Block, RuntimeApi, Executor>(&config)?;
+	let client = Arc::new(client);
 
-				let (grandpa_block_import, grandpa_link) = sc_finality_grandpa::block_import(
-					client.clone(),
-					&(client.clone() as Arc<_>),
-					select_chain,
-				)?;
+	let select_chain = sc_consensus::LongestChain::new(backend.clone());
 
-				let aura_block_import = sc_consensus_aura::AuraBlockImport::<_, _, _, AuraPair>::new(
-					grandpa_block_import.clone(), client.clone(),
-				);
+	let pool_api = sc_transaction_pool::FullChainApi::new(
+		client.clone(), config.prometheus_registry(),
+	);
+	let transaction_pool = sc_transaction_pool::BasicPool::new_full(
+		config.transaction_pool.clone(),
+		std::sync::Arc::new(pool_api),
+		config.prometheus_registry(),
+		task_manager.spawn_handle(),
+		client.clone(),
+	);
 
-				let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _>(
-					sc_consensus_aura::slot_duration(&*client)?,
-					aura_block_import,
-					Some(Box::new(grandpa_block_import.clone())),
-					None,
-					client,
-					inherent_data_providers.clone(),
-					spawn_task_handle,
-					registry,
-				)?;
+	let (grandpa_block_import, grandpa_link) = sc_finality_grandpa::block_import(
+		client.clone(), &(client.clone() as Arc<_>), select_chain.clone(),
+	)?;
 
-				import_setup = Some((grandpa_block_import, grandpa_link));
+	let aura_block_import = sc_consensus_aura::AuraBlockImport::<_, _, _, AuraPair>::new(
+		grandpa_block_import.clone(), client.clone(),
+	);
 
-				Ok(import_queue)
-			})?;
+	let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _>(
+		sc_consensus_aura::slot_duration(&*client)?,
+		aura_block_import,
+		Some(Box::new(grandpa_block_import.clone())),
+		None,
+		client.clone(),
+		inherent_data_providers.clone(),
+		&task_manager.spawn_handle(),
+		config.prometheus_registry(),
+	)?;
 
-		(builder, import_setup, inherent_data_providers)
-	}}
+	let provider = client.clone() as Arc<dyn StorageAndProofProvider<_, _>>;
+	let finality_proof_provider =
+		Arc::new(GrandpaFinalityProofProvider::new(backend.clone(), provider));
+	
+	let params = sc_service::ServiceParams {
+		backend, client, import_queue, keystore, task_manager, transaction_pool,
+		config,
+		block_announce_validator_builder: None,
+		finality_proof_request_builder: None,
+		finality_proof_provider: Some(finality_proof_provider),
+		on_demand: None,
+		remote_blockchain: None,
+		rpc_extensions_builder: Box::new(|_| ()),
+	};
+
+	Ok((
+		params, select_chain, inherent_data_providers,
+		grandpa_block_import, grandpa_link,
+	))
 }
 
 /// Builds a new service for a full client.
-pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
-	let role = config.role.clone();
-	let force_authoring = config.force_authoring;
-	let name = config.network.node_name.clone();
-	let disable_grandpa = config.disable_grandpa;
+pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {	
+	let (
+		params, select_chain, inherent_data_providers,
+		block_import, grandpa_link,
+	) = new_full_params(config)?;
 
-	let (builder, mut import_setup, inherent_data_providers) = new_full_start!(config);
+	let (
+		role, force_authoring, name, enable_grandpa, prometheus_registry,
+		client, transaction_pool, keystore,
+	) = {
+		let sc_service::ServiceParams {
+			config, client, transaction_pool, keystore, ..
+		} = &params;
 
-	let (block_import, grandpa_link) =
-		import_setup.take()
-			.expect("Link Half and Block Import are present for Full Services or setup failed before. qed");
+		(
+			config.role.clone(),
+			config.force_authoring,
+			config.network.node_name.clone(),
+			!config.disable_grandpa,
+			config.prometheus_registry().cloned(),
+
+			client.clone(), transaction_pool.clone(), keystore.clone(),
+		)
+	};
 
 	let ServiceComponents {
-		client, transaction_pool, task_manager, keystore, network, select_chain,
-		prometheus_registry, telemetry_on_connect_sinks, ..
-	 } = builder
-		.with_finality_proof_provider(|client, backend| {
-			// GenesisAuthoritySetProvider is implemented for StorageAndProofProvider
-			let provider = client as Arc<dyn StorageAndProofProvider<_, _>>;
-			Ok(Arc::new(GrandpaFinalityProofProvider::new(backend, provider)) as _)
-		})?
-		.build_full()?;
+		task_manager, network, telemetry_on_connect_sinks, ..
+	 } = sc_service::build(params)?;
 
 	if role.is_authority() {
 		let proposer = sc_basic_authorship::ProposerFactory::new(
@@ -129,9 +132,6 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 			prometheus_registry.as_ref(),
 		);
 
-		let select_chain = select_chain
-			.ok_or(ServiceError::SelectChainRequired)?;
-
 		let can_author_with =
 			sp_consensus::CanAuthorWithNativeVersion::new(client.executor().clone());
 
@@ -171,7 +171,6 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 		is_authority: role.is_network_authority(),
 	};
 
-	let enable_grandpa = !disable_grandpa;
 	if enable_grandpa {
 		// start the full GRANDPA voter
 		// NOTE: non-authorities could run the GRANDPA observer protocol, but at
@@ -209,69 +208,49 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
 
 /// Builds a new service for a light client.
 pub fn new_light(config: Configuration) -> Result<TaskManager, ServiceError> {
-	let inherent_data_providers = InherentDataProviders::new();
+	let (client, backend, keystore, task_manager, on_demand) =
+		sc_service::new_light_parts::<Block, RuntimeApi, Executor>(&config)?;
+	
+	let transaction_pool_api = Arc::new(sc_transaction_pool::LightChainApi::new(
+		client.clone(), on_demand.clone(),
+	));
+	let transaction_pool = sc_transaction_pool::BasicPool::new_light(
+		config.transaction_pool.clone(),
+		transaction_pool_api,
+		config.prometheus_registry(),
+		task_manager.spawn_handle(),
+	);
 
-	ServiceBuilder::new_light::<Block, RuntimeApi, Executor>(config)?
-		.with_select_chain(|_config, backend| {
-			Ok(LongestChain::new(backend.clone()))
-		})?
-		.with_transaction_pool(|builder| {
-			let fetcher = builder.fetcher()
-				.ok_or_else(|| "Trying to start light transaction pool without active fetcher")?;
+	let grandpa_block_import = sc_finality_grandpa::light_block_import(
+		client.clone(), backend.clone(), &(client.clone() as Arc<_>),
+		Arc::new(on_demand.checker().clone()) as Arc<_>,
+	)?;
+	let finality_proof_import = grandpa_block_import.clone();
+	let finality_proof_request_builder =
+		finality_proof_import.create_finality_proof_request_builder();
 
-			let pool_api = sc_transaction_pool::LightChainApi::new(
-				builder.client().clone(),
-				fetcher,
-			);
-			let pool = Arc::new(sc_transaction_pool::BasicPool::new_light(
-				builder.config().transaction_pool.clone(),
-				Arc::new(pool_api),
-				builder.prometheus_registry(),
-				builder.spawn_handle(),
-			));
-			Ok(pool)
-		})?
-		.with_import_queue_and_fprb(|
-			_config,
-			client,
-			backend,
-			fetcher,
-			_select_chain,
-			_tx_pool,
-			spawn_task_handle,
-			prometheus_registry,
-		| {
-			let fetch_checker = fetcher
-				.map(|fetcher| fetcher.checker().clone())
-				.ok_or_else(|| "Trying to start light import queue without active fetch checker")?;
-			let grandpa_block_import = sc_finality_grandpa::light_block_import(
-				client.clone(),
-				backend,
-				&(client.clone() as Arc<_>),
-				Arc::new(fetch_checker),
-			)?;
-			let finality_proof_import = grandpa_block_import.clone();
-			let finality_proof_request_builder =
-				finality_proof_import.create_finality_proof_request_builder();
+	let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _>(
+		sc_consensus_aura::slot_duration(&*client)?,
+		grandpa_block_import,
+		None,
+		Some(Box::new(finality_proof_import)),
+		client.clone(),
+		InherentDataProviders::new(),
+		&task_manager.spawn_handle(),
+		config.prometheus_registry(),
+	)?;
 
-			let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _>(
-				sc_consensus_aura::slot_duration(&*client)?,
-				grandpa_block_import,
-				None,
-				Some(Box::new(finality_proof_import)),
-				client,
-				inherent_data_providers.clone(),
-				spawn_task_handle,
-				prometheus_registry,
-			)?;
+	let finality_proof_provider =
+		Arc::new(GrandpaFinalityProofProvider::new(backend.clone(), client.clone() as Arc<_>));
 
-			Ok((import_queue, finality_proof_request_builder))
-		})?
-		.with_finality_proof_provider(|client, backend| {
-			// GenesisAuthoritySetProvider is implemented for StorageAndProofProvider
-			let provider = client as Arc<dyn StorageAndProofProvider<_, _>>;
-			Ok(Arc::new(GrandpaFinalityProofProvider::new(backend, provider)) as _)
-		})?
-		.build_light()
-		.map(|ServiceComponents { task_manager, .. }| task_manager)
+	sc_service::build(sc_service::ServiceParams {	
+		block_announce_validator_builder: None,
+		finality_proof_request_builder: Some(finality_proof_request_builder),
+		finality_proof_provider: Some(finality_proof_provider),
+		on_demand: Some(on_demand),
+		remote_blockchain: Some(backend.remote_blockchain()),
+		rpc_extensions_builder: Box::new(|_| ()),
+		transaction_pool: Arc::new(transaction_pool),
+		config, client, import_queue, keystore, backend, task_manager
+	 }).map(|ServiceComponents { task_manager, .. }| task_manager)
 }