Adds staking-rococo cumulus runtime

Cargo.toml

@@ -88,6 +88,7 @@ members = [
 	"cumulus/parachains/runtimes/collectives/collectives-westend",
 	"cumulus/parachains/runtimes/contracts/contracts-rococo",
 	"cumulus/parachains/runtimes/glutton/glutton-westend",
+	"cumulus/parachains/runtimes/staking/staking-rococo",
 	"cumulus/parachains/runtimes/starters/seedling",
 	"cumulus/parachains/runtimes/starters/shell",
 	"cumulus/parachains/runtimes/test-utils",

cumulus/parachains/runtimes/staking/common/CARGO.toml

@@ -0,0 +1,71 @@
+[package]
+name = "staking-common"
+version = "0.1.0"
+authors.workspace = true
+edition.workspace = true
+description = "Staking common utilities"
+license = "Apache-2.0"
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = ["derive"] }
+scale-info = { version = "2.10.0", default-features = false, features = ["derive"] }
+log = { version = "0.4.20", default-features = false }
+impl-trait-for-tuples = "0.2.2"
+
+# Substrate
+frame-support = { path = "../../../../../substrate/frame/support", default-features = false}
+sp-api = { path = "../../../../../substrate/primitives/api", default-features = false}
+sp-std = { path = "../../../../../substrate/primitives/std", default-features = false}
+sp-runtime = { path = "../../../../../substrate/primitives/runtime", default-features = false}
+sp-core = { path = "../../../../../substrate/primitives/core", default-features = false }
+sp-staking = { path = "../../../../../substrate/primitives/staking", default-features = false, features=["serde"] }
+pallet-staking = { path = "../../../../../substrate/frame/staking", default-features = false }
+pallet-election-provider-multi-phase = { path = "../../../../../substrate/frame/election-provider-multi-phase", default-features = false }
+
+# Polkadot
+pallet-xcm = { path = "../../../../../polkadot/xcm/pallet-xcm", default-features = false}
+xcm = { package = "staging-xcm", path = "../../../../../polkadot/xcm", default-features = false}
+xcm-builder = { package = "staging-xcm-builder", path = "../../../../../polkadot/xcm/xcm-builder", default-features = false}
+xcm-executor = { package = "staging-xcm-executor", path = "../../../../../polkadot/xcm/xcm-executor", default-features = false}
+
+# Cumulus
+parachains-common = { path = "../../../common", default-features = false }
+cumulus-primitives-core = { path = "../../../../primitives/core", default-features = false }
+
+[build-dependencies]
+substrate-wasm-builder = { path = "../../../../../substrate/utils/wasm-builder" }
+
+[features]
+default = [ "std" ]
+std = [
+	"codec/std",
+	"cumulus-primitives-core/std",
+	"frame-support/std",
+	"log/std",
+	"pallet-xcm/std",
+	"parachains-common/std",
+	"scale-info/std",
+	"sp-api/std",
+	"sp-runtime/std",
+	"sp-core/std",
+	"sp-std/std",
+	"xcm-builder/std",
+	"xcm-executor/std",
+	"xcm/std",
+	"sp-staking/std",
+	"pallet-staking/std",
+	"pallet-election-provider-multi-phase/std",
+]
+
+runtime-benchmarks = [
+	"cumulus-primitives-core/runtime-benchmarks",
+	"frame-support/runtime-benchmarks",
+	"pallet-xcm/runtime-benchmarks",
+	"parachains-common/runtime-benchmarks",
+	"sp-runtime/runtime-benchmarks",
+	"xcm-builder/runtime-benchmarks",
+	"xcm-executor/runtime-benchmarks",
+	"sp-staking/runtime-benchmarks",
+	"pallet-staking/runtime-benchmarks",
+	"pallet-election-provider-multi-phase/runtime-benchmarks",
+]

cumulus/parachains/runtimes/staking/common/src/lib.rs

@@ -0,0 +1,64 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use frame_support::traits::ConstU32;
+use parachains_common::Balance;
+
+/// The type used for currency conversion.
+///
+/// This must only be used as long as the balance type is `u128`.
+pub type CurrencyToVote = sp_staking::currency_to_vote::U128CurrencyToVote;
+
+/// Convert a balance to an unsigned 256-bit number, use in nomination pools.
+pub struct BalanceToU256;
+impl sp_runtime::traits::Convert<Balance, sp_core::U256> for BalanceToU256 {
+	fn convert(n: Balance) -> sp_core::U256 {
+		n.into()
+	}
+}
+
+/// Convert an unsigned 256-bit number to balance, use in nomination pools.
+pub struct U256ToBalance;
+impl sp_runtime::traits::Convert<sp_core::U256, Balance> for U256ToBalance {
+	fn convert(n: sp_core::U256) -> Balance {
+		use frame_support::traits::Defensive;
+		n.try_into().defensive_unwrap_or(Balance::MAX)
+	}
+}
+
+/// A reasonable benchmarking config for staking pallet.
+pub struct StakingBenchmarkingConfig;
+impl pallet_staking::BenchmarkingConfig for StakingBenchmarkingConfig {
+	type MaxValidators = ConstU32<1000>;
+	type MaxNominators = ConstU32<1000>;
+}
+
+/// The numbers configured here could always be more than the the maximum limits of staking pallet
+/// to ensure election snapshot will not run out of memory. For now, we set them to smaller values
+/// since the staking is bounded and the weight pipeline takes hours for this single pallet.
+pub struct BenchmarkConfig;
+impl pallet_election_provider_multi_phase::BenchmarkingConfig for BenchmarkConfig {
+	const VOTERS: [u32; 2] = [1000, 2000];
+	const TARGETS: [u32; 2] = [500, 1000];
+	const ACTIVE_VOTERS: [u32; 2] = [500, 800];
+	const DESIRED_TARGETS: [u32; 2] = [200, 400];
+	const SNAPSHOT_MAXIMUM_VOTERS: u32 = 1000;
+	const MINER_MAXIMUM_VOTERS: u32 = 1000;
+	const MAXIMUM_TARGETS: u32 = 300;
+}
+
+pub type OnChainAccuracy = sp_runtime::Perbill;