Starlight <> Ethereum: Rewards mapping

Cargo.toml

@@ -63,6 +63,7 @@ pallet-data-preservers-runtime-api = { path = "pallets/data-preservers/runtime-a
 pallet-external-validator-slashes = { path = "pallets/external-validator-slashes", default-features = false }
 pallet-external-validators = { path = "pallets/external-validators", default-features = false }
 pallet-external-validators-rewards = { path = "pallets/external-validators-rewards", default-features = false }
+pallet-external-validators-rewards-runtime-api = { path = "pallets/external-validators-rewards/runtime-api", default-features = false }
 pallet-inflation-rewards = { path = "pallets/inflation-rewards", default-features = false }
 pallet-initializer = { path = "pallets/initializer", default-features = false }
 pallet-invulnerables = { path = "pallets/invulnerables", default-features = false }
@@ -260,9 +261,11 @@ xcm-runtime-apis = { git = "https://github.com/moondance-labs/polkadot-sdk", bra
 
 # Bridges (wasm)
 alloy-sol-types = { version = "0.4.2", default-features = false }
+bridge-hub-common = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2407", default-features = false }
 milagro-bls = { package = "snowbridge-milagro-bls", version = "1.5.4", default-features = false }
 snowbridge-beacon-primitives = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2409", default-features = false }
 snowbridge-core = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2409", default-features = false }
+snowbridge-outbound-queue-merkle-tree = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2409", default-features = false }
 snowbridge-pallet-ethereum-client = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2409", default-features = false }
 snowbridge-pallet-inbound-queue = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2409", default-features = false }
 snowbridge-pallet-inbound-queue-fixtures = { git = "https://github.com/moondance-labs/polkadot-sdk", branch = "tanssi-polkadot-stable2409", default-features = false }

pallets/external-validators-rewards/Cargo.toml

@@ -13,14 +13,17 @@ targets = [ "x86_64-unknown-linux-gnu" ]
 workspace = true
 
 [dependencies]
+log = { workspace = true }
 parity-scale-codec = { workspace = true }
 scale-info = { workspace = true, features = [ "derive" ] }
 
 frame-support = { workspace = true }
 frame-system = { workspace = true }
+sp-core = { workspace = true }
 sp-runtime = { workspace = true }
 sp-staking = { workspace = true }
 sp-std = { workspace = true }
+tp-bridge = { workspace = true }
 tp-traits = { workspace = true }
 
 frame-benchmarking = { workspace = true }
@@ -29,11 +32,13 @@ pallet-balances = { workspace = true, optional = true }
 pallet-session = { workspace = true, features = [ "historical" ] }
 runtime-parachains = { workspace = true }
 
+snowbridge-core = { workspace = true }
+snowbridge-outbound-queue-merkle-tree = { workspace = true }
+
 polkadot-primitives = { workspace = true }
 
 [dev-dependencies]
 pallet-timestamp = { workspace = true }
-sp-core = { workspace = true }
 sp-io = { workspace = true }
 
 [features]
@@ -42,18 +47,22 @@ std = [
 	"frame-benchmarking/std",
 	"frame-support/std",
 	"frame-system/std",
+	"log/std",
 	"pallet-balances/std",
 	"pallet-session/std",
 	"pallet-timestamp/std",
 	"parity-scale-codec/std",
 	"polkadot-primitives/std",
 	"runtime-parachains/std",
 	"scale-info/std",
+	"snowbridge-core/std",
+	"snowbridge-outbound-queue-merkle-tree/std",
 	"sp-core/std",
 	"sp-io/std",
 	"sp-runtime/std",
 	"sp-staking/std",
 	"sp-std/std",
+	"tp-bridge/std",
 	"tp-traits/std",
 ]
 runtime-benchmarks = [
@@ -64,8 +73,10 @@ runtime-benchmarks = [
 	"pallet-timestamp/runtime-benchmarks",
 	"polkadot-primitives/runtime-benchmarks",
 	"runtime-parachains/runtime-benchmarks",
+	"snowbridge-core/runtime-benchmarks",
 	"sp-runtime/runtime-benchmarks",
 	"sp-staking/runtime-benchmarks",
+	"tp-bridge/runtime-benchmarks",
 	"tp-traits/runtime-benchmarks",
 ]
 

pallets/external-validators-rewards/runtime-api/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "pallet-external-validators-rewards-runtime-api"
+authors = { workspace = true }
+description = "Runtime API definition of pallet-external-validators-rewards"
+edition = "2021"
+license = "GPL-3.0-only"
+version = "0.1.0"
+
+[package.metadata.docs.rs]
+targets = [ "x86_64-unknown-linux-gnu" ]
+
+[lints]
+workspace = true
+
+[dependencies]
+parity-scale-codec = { workspace = true }
+snowbridge-outbound-queue-merkle-tree = { workspace = true }
+sp-api = { workspace = true }
+sp-core = { workspace = true }
+
+[features]
+default = [ "std" ]
+std = [
+	"parity-scale-codec/std",
+	"snowbridge-outbound-queue-merkle-tree/std",
+	"sp-api/std",
+	"sp-core/std",
+]

pallets/external-validators-rewards/runtime-api/src/lib.rs

@@ -0,0 +1,32 @@
+// Copyright (C) Moondance Labs Ltd.
+// This file is part of Tanssi.
+
+// Tanssi is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Tanssi is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Tanssi.  If not, see <http://www.gnu.org/licenses/>
+
+//! Runtime API for External Validators Rewards pallet
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use snowbridge_outbound_queue_merkle_tree::MerkleProof;
+
+sp_api::decl_runtime_apis! {
+    pub trait ExternalValidatorsRewardsApi<AccountId, EraIndex>
+    where
+        AccountId: parity_scale_codec::Codec,
+        EraIndex: parity_scale_codec::Codec,
+    {
+        fn generate_rewards_merkle_proof(account_id: AccountId, era_index: EraIndex) -> Option<MerkleProof>;
+        fn verify_rewards_merkle_proof(merkle_proof: MerkleProof) -> bool;
+    }
+}

pallets/external-validators-rewards/src/benchmarking.rs

@@ -0,0 +1,81 @@
+// Copyright (C) Moondance Labs Ltd.
+// This file is part of Tanssi.
+
+// Tanssi is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Tanssi is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Tanssi.  If not, see <http://www.gnu.org/licenses/>
+
+//! Benchmarking setup for pallet_external_validators_rewards
+
+use super::*;
+
+#[allow(unused)]
+use crate::Pallet as ExternalValidatorsRewards;
+use {
+    frame_benchmarking::{account, v2::*, BenchmarkError},
+    frame_support::traits::{Currency, Get},
+    sp_std::prelude::*,
+    tp_traits::OnEraEnd,
+};
+
+const SEED: u32 = 0;
+
+fn create_funded_user<T: Config + pallet_balances::Config>(
+    string: &'static str,
+    n: u32,
+    balance_factor: u32,
+) -> T::AccountId {
+    let user = account(string, n, SEED);
+    let balance = <pallet_balances::Pallet<T> as Currency<T::AccountId>>::minimum_balance()
+        * balance_factor.into();
+    let _ = <pallet_balances::Pallet<T> as Currency<T::AccountId>>::make_free_balance_be(
+        &user, balance,
+    );
+    user
+}
+
+#[allow(clippy::multiple_bound_locations)]
+#[benchmarks(where T: pallet_balances::Config)]
+mod benchmarks {
+    use super::*;
+
+    // worst case for the end of an era.
+    #[benchmark]
+    fn on_era_end() -> Result<(), BenchmarkError> {
+        frame_system::Pallet::<T>::set_block_number(0u32.into());
+
+        let mut era_reward_points = EraRewardPoints::default();
+        era_reward_points.total = T::BackingPoints::get() * 1000;
+
+        for i in 0..1000 {
+            let account_id = create_funded_user::<T>("candidate", i, 100);
+            era_reward_points
+                .individual
+                .insert(account_id, T::BackingPoints::get());
+        }
+
+        <RewardPointsForEra<T>>::insert(1u32, era_reward_points);
+
+        #[block]
+        {
+            <ExternalValidatorsRewards<T> as OnEraEnd>::on_era_end(1u32);
+        }
+
+        Ok(())
+    }
+
+    impl_benchmark_test_suite!(
+        ExternalValidatorsRewards,
+        crate::mock::new_test_ext(),
+        crate::mock::Test,
+    );
+}