feat: impl block rewards

.github/CODEOWNERS

@@ -19,6 +19,7 @@ pallets/connectors/* @NunoAlexandre @offerijns
 ## Rewards related logic
 pallets/rewards/* @lemunozm @mikiquantum
 pallets/liquidity-rewards/* @lemunozm @mikiquantum
+pallets/block-rewards/* @wischli @lemunozm
 
 ## Nft-sales related logic
 pallets/nft-sales/* @NunoAlexandre
@@ -27,7 +28,7 @@ pallets/nft-sales/* @NunoAlexandre
 pallets/keystore/* @cdamian @mikiquantum
 
 ## Pallet Registry
-pallets/pool-registry/* @gruberb @mustermeiszer
+pallets/pool-registry/* @mustermeiszer
 
 ## Pallet Pool-System
 pallets/pool-system/* @mustermeiszer @branan @offerijns
@@ -71,5 +72,8 @@ runtime/centrifuge/* @branan @mikiquantum @mustermeiszer @NunoAlexandre @offerij
 ### Changes to runtime/integration-tests
 runtime/integration-tests/* @mustermeiszer @NunoAlexandre
 
+### Changes to runtime/integration-tests/rewards
+runtime/integration-tests/rewards/* @wischli
+
 ### Changes to runtime/integration-tests/xcm/
 runtime/integration-tests/xcm/* @NunoAlexandre

Cargo.toml

@@ -37,6 +37,7 @@ members = [
   "libs/utils",
   "pallets/anchors",
   "pallets/bridge",
+  "pallets/block-rewards",
   "pallets/connectors",
   "pallets/claims",
   "pallets/collator-allowlist",
@@ -124,6 +125,7 @@ cumulus-client-consensus-aura = { git = "https://github.com/paritytech/cumulus",
 cumulus-client-consensus-common = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
 cumulus-client-network = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
 cumulus-client-service = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
+cumulus-pallet-session-benchmarking = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
 cumulus-primitives-core = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
 cumulus-primitives-parachain-inherent = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
 cumulus-relay-chain-inprocess-interface = { git = "https://github.com/paritytech/cumulus", branch = "polkadot-v0.9.37" }
@@ -207,6 +209,7 @@ std = [
   "sp-timestamp/std",
   "sp-transaction-pool/std",
   "xcm/std",
+  "cumulus-pallet-session-benchmarking/std",
 ]
 runtime-benchmarks = [
   "frame-benchmarking/runtime-benchmarks",
@@ -218,6 +221,7 @@ runtime-benchmarks = [
   "polkadot-cli/runtime-benchmarks",
   "cfg-primitives/runtime-benchmarks",
   "cfg-types/runtime-benchmarks",
+  "cumulus-pallet-session-benchmarking/runtime-benchmarks",
   "frame-benchmarking-cli/runtime-benchmarks",
   "pallet-anchors/runtime-benchmarks",
   "pallet-pool-system/runtime-benchmarks",
@@ -249,6 +253,8 @@ try-runtime = [
 fast-runtime = [
   "altair-runtime/fast-runtime",
   "centrifuge-runtime/fast-runtime",
+  "development-runtime/fast-runtime",
+  "runtime-integration-tests/fast-runtime",
 ]
 
 #

ci/script.sh

@@ -36,7 +36,7 @@ case $TARGET in
     ;;
 
   integration)
-    RUST_MIN_STACK=8388608 cargo test --release --package runtime-integration-tests
+    RUST_MIN_STACK=8388608 cargo test --release --package runtime-integration-tests --features fast-runtime
     ;;
 
   fmt)

libs/mocks/Cargo.toml

@@ -50,4 +50,6 @@ try-runtime = [
   "frame-support/try-runtime",
   "frame-system/try-runtime",
   "cfg-types/try-runtime",
+  "cfg-primitives/try-runtime",
+  "cfg-traits/try-runtime",
 ]

libs/test-utils/Cargo.toml

@@ -53,4 +53,10 @@ runtime-benchmarks = [
   "cfg-traits/runtime-benchmarks",
   "cfg-types/runtime-benchmarks",
 ]
-try-runtime = ["frame-support/try-runtime", "frame-system/try-runtime", "cfg-types/try-runtime"]
+try-runtime = [
+  "frame-support/try-runtime",
+  "frame-system/try-runtime",
+  "cfg-types/try-runtime",
+  "cfg-primitives/try-runtime",
+  "cfg-traits/try-runtime",
+]

libs/types/src/consts.rs

@@ -25,3 +25,12 @@ pub mod pools {
 		pub const MaxTrancheSymbolLengthBytes: u32 = 32;
 	}
 }
+
+// Rewards-related constants
+pub mod rewards {
+	use cfg_primitives::{Balance, CFG};
+
+	/// The default amount of stake for CurrencyId::Staking(StakingCurrency::BlockRewards) which is inherently
+	/// assigned to any member of the only group in block rewards.
+	pub const DEFAULT_COLLATOR_STAKE: Balance = CFG;
+}

libs/types/src/ids.rs

@@ -36,3 +36,7 @@ pub const STAKE_POT_PALLET_ID: PalletId = PalletId(*b"PotStake");
 // Other ids
 pub const CHAIN_BRIDGE_HASH_ID: [u8; 13] = *b"cent_nft_hash";
 pub const CHAIN_BRIDGE_NATIVE_TOKEN_ID: [u8; 4] = *b"xCFG";
+
+// Reward related
+/// The identifier of the group eligible to receive block rewards.
+pub const COLLATOR_GROUP_ID: u32 = 1;

libs/types/src/permissions.rs

@@ -471,6 +471,7 @@ mod tests {
 
 	///! Tests for some types in the common section for our runtimes
 	use super::*;
+	use crate::tokens::StakingCurrency;
 
 	parameter_types! {
 		pub const MinDelay: u64 = 4;
@@ -694,6 +695,7 @@ mod tests {
 				KSM => vec![2],
 				AUSD => vec![3],
 				ForeignAsset(id) => vec![4, id as u64, 0, 0, 0],
+				Staking(StakingCurrency::BlockRewards) => vec![5, 1, 0, 0, 0],
 			}
 		}
 	}

libs/types/src/tokens.rs

@@ -41,6 +41,19 @@ pub enum CurrencyId {
 
 	/// A foreign asset
 	ForeignAsset(ForeignAssetId),
+
+	/// A staking token
+	Staking(StakingCurrency),
+}
+
+#[derive(
+	Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Debug, Encode, Decode, TypeInfo, MaxEncodedLen,
+)]
+#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
+pub enum StakingCurrency {
+	/// An emulated internal, non-transferrable currency
+	/// Its issuance and holding is handled inherently
+	BlockRewards,
 }
 
 pub type ForeignAssetId = u32;
@@ -59,6 +72,13 @@ impl From<u32> for CurrencyId {
 	}
 }
 
+// A shortcut anchoring the assumption made about `StakingCurrency`.
+impl From<StakingCurrency> for CurrencyId {
+	fn from(inner: StakingCurrency) -> Self {
+		CurrencyId::Staking(inner)
+	}
+}
+
 /// A Currency that is solely used by tranches.
 ///
 /// We distinguish here between the enum variant CurrencyId::Tranche(PoolId, TranchId)

pallets/block-rewards/Cargo.toml

@@ -0,0 +1,81 @@
+[package]
+name = "pallet-block-rewards"
+version = "0.1.0"
+authors = ["Centrifuge <admin@centrifuge.io>"]
+description = "Block Rewards pallet"
+edition = "2021"
+homepage = "https://centrifuge.io"
+license = "LGPL-3.0"
+repository = "https://github.com/centrifuge/centrifuge-chain"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+cfg-primitives = { path = "../../libs/primitives", default-features = false }
+cfg-traits = { path = "../../libs/traits", default-features = false }
+cfg-types = { path = "../../libs/types", default-features = false }
+codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = ["derive"] }
+frame-support = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.37" }
+frame-system = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.37" }
+log = { version = "0.4.17", default-features = false }
+num-traits = { version = "0.2", default-features = false }
+pallet-collator-selection = { git = "https://github.com/paritytech/cumulus", default-features = false, branch = "polkadot-v0.9.37" }
+pallet-session = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.37" }
+scale-info = { version = "2.3.0", default-features = false, features = ["derive"] }
+sp-runtime = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.37" }
+sp-staking = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.37" }
+sp-std = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "polkadot-v0.9.37" }
+
+# optional dependencies for benchmarking
+frame-benchmarking = { git = "https://github.com/paritytech/substrate", default-features = false, optional = true, branch = "polkadot-v0.9.37" }
+
+[dev-dependencies]
+orml-tokens = { git = "https://github.com/open-web3-stack/open-runtime-module-library", branch = "polkadot-v0.9.37" }
+orml-traits = { git = "https://github.com/open-web3-stack/open-runtime-module-library", branch = "polkadot-v0.9.37" }
+pallet-balances = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.37" }
+pallet-restricted-tokens = { path = "../restricted-tokens", default-features = false }
+pallet-rewards = { path = "../rewards", default-features = false }
+sp-core = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.37" }
+sp-io = { git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.37" }
+
+[features]
+default = ["std"]
+try-runtime = [
+  "cfg-primitives/try-runtime",
+  "cfg-traits/try-runtime",
+  "frame-support/try-runtime",
+  "cfg-types/try-runtime",
+  "frame-system/try-runtime",
+  "pallet-collator-selection/try-runtime",
+  "pallet-session/try-runtime",
+]
+runtime-benchmarks = [
+  "frame-benchmarking",
+  "cfg-traits/runtime-benchmarks",
+  "cfg-types/runtime-benchmarks",
+  "frame-support/runtime-benchmarks",
+  "frame-system/runtime-benchmarks",
+  "pallet-collator-selection/runtime-benchmarks",
+  "sp-runtime/runtime-benchmarks",
+  "sp-staking/runtime-benchmarks",
+  "cfg-primitives/runtime-benchmarks",
+]
+std = [
+  "frame-benchmarking/std",
+  "num-traits/std",
+  "scale-info/std",
+  "cfg-primitives/std",
+  "cfg-traits/std",
+  "cfg-types/std",
+  "codec/std",
+  "log/std",
+  "frame-support/std",
+  "frame-system/std",
+  "pallet-collator-selection/std",
+  "pallet-rewards/std",
+  "pallet-session/std",
+  "sp-runtime/std",
+  "sp-staking/std",
+  "sp-std/std",
+]