Init block reward from pallet (ParaState#38)

Implement block reward

frame/vm/Cargo.toml

@@ -19,6 +19,8 @@ frame-support = { version = "3.0.0", default-features = false, git = "https://gi
 frame-system = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 pallet-timestamp = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 pallet-balances = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
+pallet-authorship = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
+pallet-session = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 sp-core = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 sp-runtime = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 sp-std = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
@@ -46,6 +48,8 @@ std = [
 	"frame-support/std",
 	"frame-system/std",
 	"pallet-balances/std",
+	"pallet-authorship/std",
+	"pallet-session/std",
 	"sp-io/std",
 	"sp-std/std",
 	"fp-vm/std",

frame/vm/src/lib.rs

@@ -336,6 +336,8 @@ pub mod pallet {
 	pub enum Event<T: Config> {
 		/// Setup the etherem address for block reward
 		EthAddrSet((T::AccountId, H160)),
+		/// Ethereum Reward to miner fail
+		EthRewardFailed(H160),
 		/// Ethereum events from contracts.
 		Log(Log),
 		/// A contract has been created at given \[address\].
@@ -369,6 +371,8 @@ pub mod pallet {
 		/// EVM is forbidden for the call from pallet,
 		/// and only allow from traditional Ethereum client
 		Forbidden,
+		/// Reward miner failed
+		RewardFailed,
 	}
 
 	#[pallet::genesis_config]
@@ -761,3 +765,25 @@ impl<T> OnChargeEVMTransaction<T> for ()
 		EVMCurrencyAdapter::<<T as Config>::Currency, ()>::correct_and_deposit_fee(who, corrected_fee, already_withdrawn)
 	}
 }
+
+impl<T> pallet_authorship::EventHandler<T::AccountId, T::BlockNumber> for Module<T>
+where
+	T: Config + pallet_authorship::Config + pallet_session::Config,
+{
+	fn note_author(author: T::AccountId) {
+		if let Some(eth_addr) = <EthAddrOf<T>>::get(author) {
+			Self::reward(eth_addr);
+		}
+	}
+	fn note_uncle(_author: T::AccountId, _age: T::BlockNumber) {}
+}
+
+impl<T: Config> Module<T> {
+    pub(crate) fn reward(
+        eth_address: H160,
+    ) {
+		if T::Runner::mint(eth_address, U256::from(1000000000000000000u128), T::config()).is_err() {
+			Pallet::<T>::deposit_event(Event::<T>::EthRewardFailed(eth_address));
+		}
+	}
+}

frame/vm/src/runner/mod.rs

@@ -56,4 +56,10 @@ pub trait Runner<T: Config> {
 		nonce: Option<U256>,
 		config: &evm::Config,
 	) -> Result<CreateInfo, Self::Error>;
+
+	fn mint(
+		miner: H160,
+		value: U256,
+		config: &evm::Config,
+	) -> Result<(), Self::Error>;
 }

frame/vm/src/runner/stack.rs

@@ -474,6 +474,21 @@ impl<T: Config> RunnerT<T> for Runner<T> {
 			},
 		)
 	}
+	fn mint(
+		miner: H160,
+		value: U256,
+		config: &evm::Config,
+	) -> Result<(), Self::Error> {
+		if_std! {
+			let account_id = T::AddressMapping::into_account_id(miner);
+			T::Currency::issue(value.low_u128().unique_saturated_into());
+			T::Currency::deposit_creating(&account_id, value.low_u128().unique_saturated_into());
+			log::debug!(target: "ssvm", "reward {:?} to {:?} [{:?}]", value, miner, account_id);
+			return Ok(())
+		}
+		log::warn!(target: "ssvm", "SSVM only works with native code, you will not get the reward");
+		Ok(())
+	}
 }
 
 pub fn create_address(caller: H160, nonce: U256) -> H160 {

template/runtime/Cargo.toml

@@ -27,6 +27,7 @@ pallet-vm-precompile-simple = { default-features = false, path = "../../frame/vm
 pallet-vm-precompile-sha3fips = { default-features = false, path = "../../frame/vm/precompile/sha3fips" }
 pallet-vm-precompile-modexp = { default-features = false, path = "../../frame/vm/precompile/modexp" }
 pallet-aura = { version = "3.0.0-dev", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
+pallet-authorship = { version = "3.0.0", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 pallet-balances = { version = "3.0.0-dev", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 pallet-grandpa = { version = "3.0.0-dev", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }
 pallet-randomness-collective-flip = { version = "3.0.0-dev", default-features = false, git = "https://github.com/paritytech/substrate.git", branch = "frontier" }

template/runtime/src/lib.rs

@@ -215,6 +215,18 @@ impl pallet_session::Config for Runtime {
 	type WeightInfo = ();
 }
 
+parameter_types! {
+	pub const UncleGenerations: BlockNumber = 5;
+}
+
+impl pallet_authorship::Config for Runtime {
+	type FindAuthor = pallet_session::FindAccountFromAuthorIndex<Self, Aura>;
+	type UncleGenerations = UncleGenerations;
+	type FilterUncle = ();
+	type EventHandler = EVM;
+}
+
+
 impl pallet_aura::Config for Runtime {
 	type AuthorityId = AuraId;
 }
@@ -356,6 +368,7 @@ construct_runtime!(
 		System: frame_system::{Module, Call, Config, Storage, Event<T>},
 		RandomnessCollectiveFlip: pallet_randomness_collective_flip::{Module, Call, Storage},
 		Timestamp: pallet_timestamp::{Module, Call, Storage, Inherent},
+		Authorship: pallet_authorship::{Module, Call, Storage, Inherent},
 		Balances: pallet_balances::{Module, Call, Storage, Config<T>, Event<T>},
 		Session: pallet_session::{Module, Call, Storage, Event, Config<T>},
 		ValidatorSet: pallet_validator_set::{Module, Call, Storage, Event<T>, Config<T>},