Kreivo Collective (#353)

* wip(kreivo-runtime): implement ranked collective for kreivo

* change(kreivo-runtime): configure the kreivo collective and root governance

Cargo.toml

@@ -137,6 +137,7 @@ pallet-multisig = { default-features = false, git = "https://github.com/virto-ne
 pallet-nfts = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }
 pallet-preimage = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }
 pallet-proxy = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }
+pallet-ranked-collective = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }
 pallet-referenda = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }
 pallet-remark = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }
 pallet-scheduler = { default-features = false, git = "https://github.com/virto-network/polkadot-sdk", branch = "release-virto-v1.5.0" }

runtime/kreivo/Cargo.toml

@@ -49,6 +49,7 @@ pallet-multisig = { workspace = true }
 pallet-utility = { workspace = true }
 pallet-preimage = { workspace = true }
 pallet-proxy = { workspace = true }
+pallet-ranked-collective = { workspace = true }
 pallet-referenda = { workspace = true }
 pallet-scheduler = { workspace = true }
 pallet-session = { workspace = true }
@@ -137,6 +138,7 @@ std = [
 	"pallet-payments/std",
 	"pallet-preimage/std",
 	"pallet-proxy/std",
+	"pallet-ranked-collective/std",
 	"pallet-referenda/std",
 	"pallet-referenda-tracks/std",
 	"pallet-scheduler/std",
@@ -200,6 +202,7 @@ runtime-benchmarks = [
 	"pallet-payments/runtime-benchmarks",
 	"pallet-preimage/runtime-benchmarks",
 	"pallet-proxy/runtime-benchmarks",
+	"pallet-ranked-collective/runtime-benchmarks",
 	"pallet-referenda/runtime-benchmarks",
 	"pallet-referenda-tracks/runtime-benchmarks",
 	"pallet-scheduler/runtime-benchmarks",
@@ -241,6 +244,7 @@ try-runtime = [
 	"pallet-payments/try-runtime",
 	"pallet-preimage/try-runtime",
 	"pallet-proxy/try-runtime",
+	"pallet-ranked-collective/try-runtime",
 	"pallet-referenda/try-runtime",
 	"pallet-referenda-tracks/try-runtime",
 	"pallet-scheduler/try-runtime",

runtime/kreivo/src/collective/governance.rs

@@ -0,0 +1,35 @@
+use super::*;
+
+use pallet_communities::origin::AsSignedByCommunity;
+use parachains_common::kusama::currency::QUID;
+use sp_core::ConstU128;
+
+pub type KreivoTracksInstance = pallet_referenda_tracks::Instance1;
+pub type KreivoReferendaInstance = pallet_referenda::Instance1;
+
+parameter_types! {
+	pub const AlarmInterval: BlockNumber = 1;
+	pub const SubmissionDeposit: Balance = QUID;
+	pub const UndecidingTimeout: BlockNumber = 14 * DAYS;
+}
+
+impl pallet_referenda::Config<KreivoReferendaInstance> for Runtime {
+	type WeightInfo = pallet_referenda::weights::SubstrateWeight<Self>;
+	type RuntimeCall = RuntimeCall;
+	type RuntimeEvent = RuntimeEvent;
+	type Scheduler = Scheduler;
+	type Currency = Balances;
+	// Communities can submit proposals.
+	type SubmitOrigin = AsEnsureOriginWithArg<AsSignedByCommunity<Self>>;
+	type CancelOrigin = EnsureRoot<AccountId>;
+	type KillOrigin = EnsureRoot<AccountId>;
+	type Slash = ();
+	type Votes = pallet_ranked_collective::Votes;
+	type Tally = pallet_ranked_collective::TallyOf<Runtime, KreivoCollectiveInstance>;
+	type SubmissionDeposit = ConstU128<0>;
+	type MaxQueued = ConstU32<10>;
+	type UndecidingTimeout = ConstU32<{ 2 * DAYS }>;
+	type AlarmInterval = ConstU32<1>;
+	type Tracks = tracks::TracksInfo;
+	type Preimages = Preimage;
+}

runtime/kreivo/src/collective/mod.rs

@@ -0,0 +1,27 @@
+use super::*;
+
+use frame_system::EnsureRootWithSuccess;
+use sp_core::ConstU16;
+
+pub mod governance;
+pub mod tracks;
+
+pub type KreivoCollectiveInstance = pallet_ranked_collective::Instance1;
+impl pallet_ranked_collective::Config<KreivoCollectiveInstance> for Runtime {
+	type WeightInfo = pallet_ranked_collective::weights::SubstrateWeight<Self>;
+	type RuntimeEvent = RuntimeEvent;
+
+	// Initially, members of kreivo collective are promoted via governance action
+	// In the future, it's expected to have an auxilliary pallet to observe the
+	// criteria for ranking
+	type PromoteOrigin = EnsureRootWithSuccess<Self::AccountId, ConstU16<65535>>;
+
+	// Initially, members of kreivo collective are demoted via governance action
+	// In the future, it's expected to have an auxilliary pallet to observe the
+	// criteria for ranking
+	type DemoteOrigin = EnsureRootWithSuccess<Self::AccountId, ConstU16<65535>>;
+
+	type Polls = KreivoReferenda;
+	type MinRankOfClass = ();
+	type VoteWeight = pallet_ranked_collective::Linear;
+}

runtime/kreivo/src/collective/tracks.rs

@@ -0,0 +1,52 @@
+use super::*;
+
+use pallet_referenda::{impl_tracksinfo_get, Track};
+use sp_runtime::str_array as s;
+use sp_std::borrow::Cow;
+
+pub type TrackId = u16;
+
+pub struct TracksInfo;
+impl pallet_referenda::TracksInfo<Balance, BlockNumber> for TracksInfo {
+	type Id = TrackId;
+	type RuntimeOrigin = <RuntimeOrigin as frame_support::traits::OriginTrait>::PalletsOrigin;
+	type TracksIter = pallet_referenda::StaticTracksIter<Self::Id, Balance, BlockNumber>;
+
+	fn tracks() -> Self::TracksIter {
+		const DATA: [pallet_referenda::Track<TrackId, Balance, BlockNumber>; 1] = [Track {
+			id: 0,
+			info: pallet_referenda::TrackInfo {
+				name: s("Root"),
+				max_deciding: 1,
+				decision_deposit: 0,
+				prepare_period: 15 * MINUTES,
+				decision_period: 4 * DAYS,
+				confirm_period: 15 * MINUTES,
+				min_enactment_period: 1,
+				min_approval: pallet_referenda::Curve::LinearDecreasing {
+					length: Perbill::from_percent(100),
+					floor: Perbill::from_percent(90),
+					ceil: Perbill::from_percent(100),
+				},
+				min_support: pallet_referenda::Curve::LinearDecreasing {
+					length: Perbill::from_percent(100),
+					floor: Perbill::from_percent(0),
+					ceil: Perbill::from_percent(100),
+				},
+			},
+		}];
+		DATA.iter().map(Cow::Borrowed)
+	}
+
+	fn track_for(id: &Self::RuntimeOrigin) -> Result<Self::Id, ()> {
+		if let Ok(system_origin) = frame_system::RawOrigin::try_from(id.clone()) {
+			match system_origin {
+				frame_system::RawOrigin::Root => Ok(0),
+				_ => Err(()),
+			}
+		} else {
+			Err(())
+		}
+	}
+}
+impl_tracksinfo_get!(TracksInfo, Balance, BlockNumber);

runtime/kreivo/src/lib.rs

@@ -71,6 +71,9 @@ pub use polkadot_runtime_common::{prod_or_fast, BlockHashCount, SlowAdjustingFee
 
 pub use weights::{BlockExecutionWeight, ExtrinsicBaseWeight};
 
+// Kreivo Governance
+pub mod collective;
+
 // Virto toolchain
 pub mod payments;
 
@@ -196,6 +199,8 @@ construct_runtime!(
 
 		// Governance
 		Treasury: pallet_treasury = 50,
+		KreivoCollective: pallet_ranked_collective::<Instance1> = 51,
+		KreivoReferenda: pallet_referenda::<Instance1> = 52,
 
 		// Virto Tooling
 		Payments: pallet_payments = 60,
@@ -703,6 +708,8 @@ mod benches {
 		[pallet_utility, Utility]
 		[pallet_assets, Assets]
 		[pallet_proxy, Proxy]
+		[pallet_referenda, KreivoReferenda]
+		[pallet_ranked_collective, KreivoCollective]
 		[pallet_payments, Payments]
 		[pallet_communities, Communities]
 		[pallet_referenda_tracks, CommunityTracks]