Remove light client companion

bridges/modules/grandpa/src/lib.rs

@@ -600,7 +600,7 @@ pub fn initialize_for_benchmarks<T: Config<I>, I: 'static>(header: BridgedHeader
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use crate::mock::{run_test, test_header, Origin, TestHash, TestHeader, TestNumber, TestRuntime};
+	use crate::mock::{run_test, test_header, Origin, TestHeader, TestNumber, TestRuntime};
 	use bp_test_utils::{
 		authority_list, make_default_justification, make_justification_for_header, JustificationGeneratorParams, ALICE,
 		BOB,
@@ -644,18 +644,18 @@ mod tests {
 		let _ = Pallet::<TestRuntime>::on_initialize(current_number);
 	}
 
-	fn change_log(delay: u64) -> Digest<TestHash> {
+	fn change_log(delay: u64) -> Digest {
 		let consensus_log = ConsensusLog::<TestNumber>::ScheduledChange(sp_finality_grandpa::ScheduledChange {
 			next_authorities: vec![(ALICE.into(), 1), (BOB.into(), 1)],
 			delay,
 		});
 
-		Digest::<TestHash> {
+		Digest {
 			logs: vec![DigestItem::Consensus(GRANDPA_ENGINE_ID, consensus_log.encode())],
 		}
 	}
 
-	fn forced_change_log(delay: u64) -> Digest<TestHash> {
+	fn forced_change_log(delay: u64) -> Digest {
 		let consensus_log = ConsensusLog::<TestNumber>::ForcedChange(
 			delay,
 			sp_finality_grandpa::ScheduledChange {
@@ -664,7 +664,7 @@ mod tests {
 			},
 		);
 
-		Digest::<TestHash> {
+		Digest {
 			logs: vec![DigestItem::Consensus(GRANDPA_ENGINE_ID, consensus_log.encode())],
 		}
 	}

bridges/modules/grandpa/src/mock.rs

@@ -28,7 +28,6 @@ use sp_runtime::{
 pub type AccountId = u64;
 pub type TestHeader = crate::BridgedHeader<TestRuntime, ()>;
 pub type TestNumber = crate::BridgedBlockNumber<TestRuntime, ()>;
-pub type TestHash = crate::BridgedBlockHash<TestRuntime, ()>;
 
 type Block = frame_system::mocking::MockBlock<TestRuntime>;
 type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<TestRuntime>;

node/client/src/lib.rs

@@ -32,7 +32,7 @@ use sp_runtime::{
 	traits::{BlakeTwo256, Block as BlockT},
 	Justifications,
 };
-use sp_storage::{ChildInfo, PrefixedStorageKey, StorageData, StorageKey};
+use sp_storage::{ChildInfo, StorageData, StorageKey};
 use std::sync::Arc;
 
 pub type FullBackend = sc_service::TFullBackend<Block>;
@@ -514,36 +514,6 @@ impl sc_client_api::StorageProvider<Block, crate::FullBackend> for Client {
 			}
 		}
 	}
-
-	fn max_key_changes_range(
-		&self,
-		first: NumberFor<Block>,
-		last: BlockId<Block>,
-	) -> sp_blockchain::Result<Option<(NumberFor<Block>, BlockId<Block>)>> {
-		with_client! {
-			self,
-			client,
-			{
-				client.max_key_changes_range(first, last)
-			}
-		}
-	}
-
-	fn key_changes(
-		&self,
-		first: NumberFor<Block>,
-		last: BlockId<Block>,
-		storage_key: Option<&PrefixedStorageKey>,
-		key: &StorageKey,
-	) -> sp_blockchain::Result<Vec<(NumberFor<Block>, u32)>> {
-		with_client! {
-			self,
-			client,
-			{
-				client.key_changes(first, last, storage_key, key)
-			}
-		}
-	}
 }
 
 impl sp_blockchain::HeaderBackend<Block> for Client {

node/core/pvf/src/executor_intf.rs

@@ -174,10 +174,6 @@ impl sp_externalities::Externalities for ValidationExternalities {
 		panic!("child_storage_root: unsupported feature for parachain validation")
 	}
 
-	fn storage_changes_root(&mut self, _: &[u8]) -> Result<Option<Vec<u8>>, ()> {
-		panic!("storage_changes_root: unsupported feature for parachain validation")
-	}
-
 	fn next_child_storage_key(&self, _: &ChildInfo, _: &[u8]) -> Option<Vec<u8>> {
 		panic!("next_child_storage_key: unsupported feature for parachain validation")
 	}

node/service/src/chain_spec.rs

@@ -303,10 +303,7 @@ fn polkadot_staging_testnet_config_genesis(wasm_binary: &[u8]) -> polkadot::Gene
 	const STASH: u128 = 100 * DOT;
 
 	polkadot::GenesisConfig {
-		system: polkadot::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: polkadot::SystemConfig { code: wasm_binary.to_vec() },
 		balances: polkadot::BalancesConfig {
 			balances: endowed_accounts
 				.iter()
@@ -494,10 +491,7 @@ fn westend_staging_testnet_config_genesis(wasm_binary: &[u8]) -> westend::Genesi
 	const STASH: u128 = 100 * WND;
 
 	westend::GenesisConfig {
-		system: westend::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: westend::SystemConfig { code: wasm_binary.to_vec() },
 		balances: westend::BalancesConfig {
 			balances: endowed_accounts
 				.iter()
@@ -685,10 +679,7 @@ fn kusama_staging_testnet_config_genesis(wasm_binary: &[u8]) -> kusama::GenesisC
 	const STASH: u128 = 100 * KSM;
 
 	kusama::GenesisConfig {
-		system: kusama::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: kusama::SystemConfig { code: wasm_binary.to_vec() },
 		balances: kusama::BalancesConfig {
 			balances: endowed_accounts
 				.iter()
@@ -1000,10 +991,7 @@ fn rococo_staging_testnet_config_genesis(wasm_binary: &[u8]) -> rococo_runtime::
 	const STASH: u128 = 100 * ROC;
 
 	rococo_runtime::GenesisConfig {
-		system: rococo_runtime::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: rococo_runtime::SystemConfig { code: wasm_binary.to_vec() },
 		balances: rococo_runtime::BalancesConfig {
 			balances: endowed_accounts
 				.iter()
@@ -1260,10 +1248,7 @@ pub fn polkadot_testnet_genesis(
 	const STASH: u128 = 100 * DOT;
 
 	polkadot::GenesisConfig {
-		system: polkadot::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: polkadot::SystemConfig { code: wasm_binary.to_vec() },
 		indices: polkadot::IndicesConfig { indices: vec![] },
 		balances: polkadot::BalancesConfig {
 			balances: endowed_accounts.iter().map(|k| (k.clone(), ENDOWMENT)).collect(),
@@ -1347,10 +1332,7 @@ pub fn kusama_testnet_genesis(
 	const STASH: u128 = 100 * KSM;
 
 	kusama::GenesisConfig {
-		system: kusama::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: kusama::SystemConfig { code: wasm_binary.to_vec() },
 		indices: kusama::IndicesConfig { indices: vec![] },
 		balances: kusama::BalancesConfig {
 			balances: endowed_accounts.iter().map(|k| (k.clone(), ENDOWMENT)).collect(),
@@ -1436,10 +1418,7 @@ pub fn westend_testnet_genesis(
 	const STASH: u128 = 100 * DOT;
 
 	westend::GenesisConfig {
-		system: westend::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: westend::SystemConfig { code: wasm_binary.to_vec() },
 		indices: westend::IndicesConfig { indices: vec![] },
 		balances: westend::BalancesConfig {
 			balances: endowed_accounts.iter().map(|k| (k.clone(), ENDOWMENT)).collect(),
@@ -1518,10 +1497,7 @@ pub fn rococo_testnet_genesis(
 	const ENDOWMENT: u128 = 1_000_000 * DOT;
 
 	rococo_runtime::GenesisConfig {
-		system: rococo_runtime::SystemConfig {
-			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
-		},
+		system: rococo_runtime::SystemConfig { code: wasm_binary.to_vec() },
 		beefy: Default::default(),
 		indices: rococo_runtime::IndicesConfig { indices: vec![] },
 		balances: rococo_runtime::BalancesConfig {

node/service/src/lib.rs

@@ -107,8 +107,7 @@ pub use sp_api::{ApiRef, ConstructRuntimeApi, Core as CoreApi, ProvideRuntimeApi
 pub use sp_runtime::{
 	generic,
 	traits::{
-		self as runtime_traits, BlakeTwo256, Block as BlockT, DigestFor, HashFor,
-		Header as HeaderT, NumberFor,
+		self as runtime_traits, BlakeTwo256, Block as BlockT, HashFor, Header as HeaderT, NumberFor,
 	},
 };
 
@@ -795,7 +794,6 @@ where
 			transaction_pool: transaction_pool.clone(),
 			spawn_handle: task_manager.spawn_handle(),
 			import_queue,
-			on_demand: None,
 			block_announce_validator_builder: None,
 			warp_sync: Some(warp_sync),
 		})?;
@@ -865,8 +863,6 @@ where
 		rpc_extensions_builder: Box::new(rpc_extensions_builder),
 		transaction_pool: transaction_pool.clone(),
 		task_manager: &mut task_manager,
-		on_demand: None,
-		remote_blockchain: None,
 		system_rpc_tx,
 		telemetry: telemetry.as_mut(),
 	})?;

primitives/src/v1/mod.rs

@@ -1188,8 +1188,8 @@ pub enum ConsensusLog {
 
 impl ConsensusLog {
 	/// Attempt to convert a reference to a generic digest item into a consensus log.
-	pub fn from_digest_item<H>(
-		digest_item: &runtime_primitives::DigestItem<H>,
+	pub fn from_digest_item(
+		digest_item: &runtime_primitives::DigestItem,
 	) -> Result<Option<Self>, parity_scale_codec::Error> {
 		match digest_item {
 			runtime_primitives::DigestItem::Consensus(id, encoded) if id == &POLKADOT_ENGINE_ID =>
@@ -1199,8 +1199,8 @@ impl ConsensusLog {
 	}
 }
 
-impl<H> From<ConsensusLog> for runtime_primitives::DigestItem<H> {
-	fn from(c: ConsensusLog) -> runtime_primitives::DigestItem<H> {
+impl From<ConsensusLog> for runtime_primitives::DigestItem {
+	fn from(c: ConsensusLog) -> runtime_primitives::DigestItem {
 		Self::Consensus(POLKADOT_ENGINE_ID, c.encode())
 	}
 }

rpc/src/lib.rs

@@ -21,10 +21,7 @@
 use std::sync::Arc;
 
 use polkadot_primitives::v0::{AccountId, Balance, Block, BlockNumber, Hash, Nonce};
-use sc_client_api::{
-	light::{Fetcher, RemoteBlockchain},
-	AuxStore,
-};
+use sc_client_api::AuxStore;
 use sc_consensus_babe::Epoch;
 use sc_finality_grandpa::FinalityProofProvider;
 pub use sc_rpc::{DenyUnsafe, SubscriptionTaskExecutor};
@@ -40,18 +37,6 @@ use txpool_api::TransactionPool;
 /// A type representing all RPC extensions.
 pub type RpcExtension = jsonrpc_core::IoHandler<sc_rpc::Metadata>;
 
-/// Light client extra dependencies.
-pub struct LightDeps<C, F, P> {
-	/// The client instance to use.
-	pub client: Arc<C>,
-	/// Transaction pool instance.
-	pub pool: Arc<P>,
-	/// Remote access to the blockchain (async).
-	pub remote_blockchain: Arc<dyn RemoteBlockchain<Block>>,
-	/// Fetcher instance.
-	pub fetcher: Arc<F>,
-}
-
 /// Extra dependencies for BABE.
 pub struct BabeDeps {
 	/// BABE protocol config.
@@ -179,27 +164,3 @@ where
 
 	Ok(io)
 }
-
-/// Instantiate all RPC extensions for light node.
-pub fn create_light<C, P, F>(deps: LightDeps<C, F, P>) -> RpcExtension
-where
-	C: ProvideRuntimeApi<Block>,
-	C: HeaderBackend<Block>,
-	C: Send + Sync + 'static,
-	C::Api: frame_rpc_system::AccountNonceApi<Block, AccountId, Nonce>,
-	C::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>,
-	P: TransactionPool + Sync + Send + 'static,
-	F: Fetcher<Block> + 'static,
-{
-	use frame_rpc_system::{LightSystem, SystemApi};
-
-	let LightDeps { client, pool, remote_blockchain, fetcher } = deps;
-	let mut io = jsonrpc_core::IoHandler::default();
-	io.extend_with(SystemApi::<Hash, AccountId, Nonce>::to_delegate(LightSystem::new(
-		client,
-		remote_blockchain,
-		fetcher,
-		pool,
-	)));
-	io
-}

runtime/parachains/src/initializer/benchmarking.rs

@@ -16,8 +16,9 @@
 
 use super::*;
 use frame_benchmarking::benchmarks;
-use frame_system::{DigestItemOf, RawOrigin};
+use frame_system::RawOrigin;
 use primitives::v1::ConsensusLog;
+use sp_runtime::DigestItem;
 
 // Random large number for the digest
 const DIGEST_MAX_LEN: u32 = 65536;
@@ -32,7 +33,7 @@ benchmarks! {
 	verify {
 		assert_eq!(
 			<frame_system::Pallet<T>>::digest().logs.last().unwrap(),
-			&<DigestItemOf<T>>::from(ConsensusLog::ForceApprove(d + 1)),
+			&DigestItem::from(ConsensusLog::ForceApprove(d + 1)),
 		);
 	}