`17a564cfbd3b`

source

node/src/service.rs10.3 KiBsource history
1//! Service and ServiceFactory implementation. Specialized wrapper over substrate service.23//4// This file is subject to the terms and conditions defined in5// file 'LICENSE', which is part of this source code package.6//78use std::sync::Arc;9use std::time::Duration;10use sc_client_api::{ExecutorProvider, RemoteBackend};11use nft_runtime::{self, opaque::Block, RuntimeApi};12use sc_service::{error::Error as ServiceError, Configuration, TaskManager};13use sp_inherents::InherentDataProviders;14use sc_executor::native_executor_instance;15pub use sc_executor::NativeExecutor;16use sp_consensus_aura::sr25519::{AuthorityPair as AuraPair};17use sc_finality_grandpa::SharedVoterState;18use sc_keystore::LocalKeystore;19use sc_telemetry::TelemetrySpan;2021// Our native executor instance.22native_executor_instance!(23	pub Executor,24	nft_runtime::api::dispatch,25	nft_runtime::native_version,26	frame_benchmarking::benchmarking::HostFunctions,27);2829type FullClient = sc_service::TFullClient<Block, RuntimeApi, Executor>;30type FullBackend = sc_service::TFullBackend<Block>;31type FullSelectChain = sc_consensus::LongestChain<FullBackend, Block>;3233pub fn new_partial(config: &Configuration) -> Result<sc_service::PartialComponents<34	FullClient, FullBackend, FullSelectChain,35	sp_consensus::DefaultImportQueue<Block, FullClient>,36	sc_transaction_pool::FullPool<Block, FullClient>,37	(38		sc_consensus_aura::AuraBlockImport<39			Block,40			FullClient,41			sc_finality_grandpa::GrandpaBlockImport<FullBackend, Block, FullClient, FullSelectChain>,42			AuraPair43		>,44		sc_finality_grandpa::LinkHalf<Block, FullClient, FullSelectChain>,45	)46>, ServiceError> {47	if config.keystore_remote.is_some() {48		return Err(ServiceError::Other(49			format!("Remote Keystores are not supported.")))50	}51	let inherent_data_providers = sp_inherents::InherentDataProviders::new();5253	let (client, backend, keystore_container, task_manager) =54		sc_service::new_full_parts::<Block, RuntimeApi, Executor>(&config)?;55	let client = Arc::new(client);5657	let select_chain = sc_consensus::LongestChain::new(backend.clone());5859	let transaction_pool = sc_transaction_pool::BasicPool::new_full(60		config.transaction_pool.clone(),61		config.role.is_authority().into(),62		config.prometheus_registry(),63		task_manager.spawn_handle(),64		client.clone(),65	);6667	let (grandpa_block_import, grandpa_link) = sc_finality_grandpa::block_import(68		client.clone(), &(client.clone() as Arc<_>), select_chain.clone(),69	)?;7071	let aura_block_import = sc_consensus_aura::AuraBlockImport::<_, _, _, AuraPair>::new(72		grandpa_block_import.clone(), client.clone(),73	);7475	let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _, _>(76		sc_consensus_aura::slot_duration(&*client)?,77		aura_block_import.clone(),78		Some(Box::new(grandpa_block_import.clone())),79		client.clone(),80		inherent_data_providers.clone(),81		&task_manager.spawn_handle(),82		config.prometheus_registry(),83		sp_consensus::CanAuthorWithNativeVersion::new(client.executor().clone()),84	)?;8586	Ok(sc_service::PartialComponents {87		client, backend, task_manager, import_queue, keystore_container, select_chain, transaction_pool,88		inherent_data_providers,89		other: (aura_block_import, grandpa_link),90	})91}9293fn remote_keystore(_url: &String) -> Result<Arc<LocalKeystore>, &'static str> {94	// FIXME: here would the concrete keystore be built,95	//        must return a concrete type (NOT `LocalKeystore`) that96	//        implements `CryptoStore` and `SyncCryptoStore`97	Err("Remote Keystore not supported.")98}99100/// Builds a new service for a full client.101pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError> {102	let sc_service::PartialComponents {103		client, backend, mut task_manager, import_queue, mut keystore_container, select_chain, transaction_pool,104		inherent_data_providers,105		other: (block_import, grandpa_link),106	} = new_partial(&config)?;107108	if let Some(url) = &config.keystore_remote {109		match remote_keystore(url) {110			Ok(k) => keystore_container.set_remote_keystore(k),111			Err(e) => {112				return Err(ServiceError::Other(113					format!("Error hooking up remote keystore for {}: {}", url, e)))114			}115		};116	}117118	config.network.extra_sets.push(sc_finality_grandpa::grandpa_peers_set_config());119120	let (network, network_status_sinks, system_rpc_tx, network_starter) =121		sc_service::build_network(sc_service::BuildNetworkParams {122			config: &config,123			client: client.clone(),124			transaction_pool: transaction_pool.clone(),125			spawn_handle: task_manager.spawn_handle(),126			import_queue,127			on_demand: None,128			block_announce_validator_builder: None,129		})?;130131	if config.offchain_worker.enabled {132		sc_service::build_offchain_workers(133			&config, backend.clone(), task_manager.spawn_handle(), client.clone(), network.clone(),134		);135	}136137	let role = config.role.clone();138	let force_authoring = config.force_authoring;139	let backoff_authoring_blocks: Option<()> = None;140	let name = config.network.node_name.clone();141	let enable_grandpa = !config.disable_grandpa;142	let prometheus_registry = config.prometheus_registry().cloned();143144	let rpc_extensions_builder = {145		let client = client.clone();146		let pool = transaction_pool.clone();147148		Box::new(move |deny_unsafe, _| {149			let deps = crate::rpc::FullDeps {150				client: client.clone(),151				pool: pool.clone(),152				deny_unsafe,153			};154155			crate::rpc::create_full(deps)156		})157	};158159	let (_rpc_handlers, telemetry_connection_notifier) = sc_service::spawn_tasks(160		sc_service::SpawnTasksParams {161			network: network.clone(),162			client: client.clone(),163			keystore: keystore_container.sync_keystore(),164			task_manager: &mut task_manager,165			transaction_pool: transaction_pool.clone(),166			rpc_extensions_builder,167			on_demand: None,168			remote_blockchain: None,169			backend,170			network_status_sinks,171			system_rpc_tx,172			config,173		},174	)?;175176	if role.is_authority() {177		let proposer = sc_basic_authorship::ProposerFactory::new(178			task_manager.spawn_handle(),179			client.clone(),180			transaction_pool,181			prometheus_registry.as_ref(),182		);183184		let can_author_with =185			sp_consensus::CanAuthorWithNativeVersion::new(client.executor().clone());186187		let aura = sc_consensus_aura::start_aura::<_, _, _, _, _, AuraPair, _, _, _, _>(188			sc_consensus_aura::slot_duration(&*client)?,189			client.clone(),190			select_chain,191			block_import,192			proposer,193			network.clone(),194			inherent_data_providers.clone(),195			force_authoring,196			backoff_authoring_blocks,197			keystore_container.sync_keystore(),198			can_author_with,199		)?;200201		// the AURA authoring task is considered essential, i.e. if it202		// fails we take down the service with it.203		task_manager.spawn_essential_handle().spawn_blocking("aura", aura);204	}205206	// if the node isn't actively participating in consensus then it doesn't207	// need a keystore, regardless of which protocol we use below.208	let keystore = if role.is_authority() {209		Some(keystore_container.sync_keystore())210	} else {211		None212	};213214	let grandpa_config = sc_finality_grandpa::Config {215		// FIXME #1578 make this available through chainspec216		gossip_duration: Duration::from_millis(333),217		justification_period: 512,218		name: Some(name),219		observer_enabled: false,220		keystore,221		is_authority: role.is_network_authority(),222	};223224	if enable_grandpa {225		// start the full GRANDPA voter226		// NOTE: non-authorities could run the GRANDPA observer protocol, but at227		// this point the full voter should provide better guarantees of block228		// and vote data availability than the observer. The observer has not229		// been tested extensively yet and having most nodes in a network run it230		// could lead to finality stalls.231		let grandpa_config = sc_finality_grandpa::GrandpaParams {232			config: grandpa_config,233			link: grandpa_link,234			network,235			telemetry_on_connect: telemetry_connection_notifier.map(|x| x.on_connect_stream()),236			voting_rule: sc_finality_grandpa::VotingRulesBuilder::default().build(),237			prometheus_registry,238			shared_voter_state: SharedVoterState::empty(),239		};240241		// the GRANDPA voter task is considered infallible, i.e.242		// if it fails we take down the service with it.243		task_manager.spawn_essential_handle().spawn_blocking(244			"grandpa-voter",245			sc_finality_grandpa::run_grandpa_voter(grandpa_config)?246		);247	}248249	network_starter.start_network();250	Ok(task_manager)251}252/// Builds a new service for a light client.253pub fn new_light(mut config: Configuration) -> Result<TaskManager, ServiceError> {254	let (client, backend, keystore_container, mut task_manager, on_demand) =255		sc_service::new_light_parts::<Block, RuntimeApi, Executor>(&config)?;256257	config.network.extra_sets.push(sc_finality_grandpa::grandpa_peers_set_config());258259	let select_chain = sc_consensus::LongestChain::new(backend.clone());260261	let transaction_pool = Arc::new(sc_transaction_pool::BasicPool::new_light(262		config.transaction_pool.clone(),263		config.prometheus_registry(),264		task_manager.spawn_handle(),265		client.clone(),266		on_demand.clone(),267	));268269	let (grandpa_block_import, _) = sc_finality_grandpa::block_import(270		client.clone(),271		&(client.clone() as Arc<_>),272		select_chain.clone(),273	)?;274275	let aura_block_import = sc_consensus_aura::AuraBlockImport::<_, _, _, AuraPair>::new(276		grandpa_block_import.clone(),277		client.clone(),278	);279280	let import_queue = sc_consensus_aura::import_queue::<_, _, _, AuraPair, _, _>(281		sc_consensus_aura::slot_duration(&*client)?,282		aura_block_import,283		Some(Box::new(grandpa_block_import)),284		client.clone(),285		InherentDataProviders::new(),286		&task_manager.spawn_handle(),287		config.prometheus_registry(),288		sp_consensus::NeverCanAuthor,289	)?;290291	let (network, network_status_sinks, system_rpc_tx, network_starter) =292		sc_service::build_network(sc_service::BuildNetworkParams {293			config: &config,294			client: client.clone(),295			transaction_pool: transaction_pool.clone(),296			spawn_handle: task_manager.spawn_handle(),297			import_queue,298			on_demand: Some(on_demand.clone()),299			block_announce_validator_builder: None,300		})?;301302	if config.offchain_worker.enabled {303		sc_service::build_offchain_workers(304			&config, backend.clone(), task_manager.spawn_handle(), client.clone(), network.clone(),305		);306	}307308	sc_service::spawn_tasks(sc_service::SpawnTasksParams {309		remote_blockchain: Some(backend.remote_blockchain()),310		transaction_pool,311		task_manager: &mut task_manager,312		on_demand: Some(on_demand),313		rpc_extensions_builder: Box::new(|_, _| ()),314		config,315		client,316		keystore: keystore_container.sync_keystore(),317		backend,318		network,319		network_status_sinks,320		system_rpc_tx,321	})?;322323	network_starter.start_network();324325	Ok(task_manager)326}