kusama: enable dispute slashes (#5974)

* disputes: runtime part of slashing

* disputes: reward winners

* disputes/slashing: validate_unsigned impl

* fmt

* disputes/slashing: report_dispute_lost_unsigned

* disputes/slashing: separate winners from losers and report winners

* disputes/slashing: refactoring

* impl HandleReports

* enable on Wenstend

* fmt

* add slashing pallet to the mock and test runtimes

* fix a bug in report_dispute_lost_unsigned

* fmt

* disputes: remove new_participants from summary

* disputes: remove punish_inconclusive

* impl SlashingHandler for Pallet for type-safety

* do not impl slashing::Config on mainnets yet

* teach spellcheck deduplication

* simplify interfaces and resolve some TODOs

* resolve some more TODOs

* minor typos

* move slashing into a folder

* remove unnecessary clone

* fix validator_set_count calculation

* introduce ValidatorSetCount

* store ValidatorSetCount

* fmt

* add the benchmark

* fmt

* unflatten slashing

* post-rebase fixes

* remove winners eagerly

* use real slashing weights for westend

* remove bench test suite

* zombinet: modify disputes test to check for an offence report

* zombinet: add a timeout

* add slashing pallet to Rococo

* zombienet: revert back to rococo-local

* fmt

* remove TODOs

* revert some accidental changes

* slashing is submodule of disputes

* Change the log target

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* wrap comments with rustfmt, more docs, constants

* use Defensive trait

* cargo update -p sp-io

* merge offence types, remove rewards for now

* cargo update -p sp-io

* benchmark fixes

* fmt

* unused var

* fix block_author impl

* ressurect RewardValidators trait

* remove outdated comment

* more module docs

* introduce BenchmarkingConfig

* typo fix

* teach spellcheck unapplied

* use Weight::new()

* fix mocking rewards

* use RefTimeWeight

* ".git/.scripts/bench-bot.sh" runtime westend-dev runtime_parachains::disputes::slashing

* refactor maybe_identify_validators

* no more ticket in disguise

* remove outdated comments

* lower against valid to 0.1%

* bump zombienet version for debug

* use from_perthousand

* post-merge fixes

* another day, another Weight changes

* Revert "bump zombienet version for debug"

This reverts commit 0d99787.

* do not reward block authors

* fix outdated comment

* use Pays from frame_support::dispatch::Pays

* kusama: enable dispute slashing

* ".git/.scripts/bench-bot.sh" runtime kusama-dev runtime_parachains::disputes::slashing

* post merge fixes

* ".git/.scripts/commands/bench/bench.sh" runtime kusama-dev runtime_parachains::disputes::slashing

* ".git/.scripts/commands/bench/bench.sh" runtime kusama runtime_parachains::disputes::slashing

---------

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: command-bot <>
Co-authored-by: Javier Viola <javier@parity.io>
Co-authored-by: Javier Viola <pepoviola@gmail.com>

runtime/kusama/src/lib.rs

@@ -39,8 +39,9 @@ use sp_std::{cmp::Ordering, collections::btree_map::BTreeMap, prelude::*};
 
 use runtime_parachains::{
 	configuration as parachains_configuration, disputes as parachains_disputes,
-	dmp as parachains_dmp, hrmp as parachains_hrmp, inclusion as parachains_inclusion,
-	initializer as parachains_initializer, origin as parachains_origin, paras as parachains_paras,
+	disputes::slashing as parachains_slashing, dmp as parachains_dmp, hrmp as parachains_hrmp,
+	inclusion as parachains_inclusion, initializer as parachains_initializer,
+	origin as parachains_origin, paras as parachains_paras,
 	paras_inherent as parachains_paras_inherent, reward_points as parachains_reward_points,
 	runtime_api_impl::v4 as parachains_runtime_api_impl, scheduler as parachains_scheduler,
 	session_info as parachains_session_info, shared as parachains_shared, ump as parachains_ump,
@@ -469,9 +470,9 @@ impl pallet_election_provider_multi_phase::Config for Runtime {
 	type OffchainRepeat = OffchainRepeat;
 	type MinerTxPriority = NposSolutionPriority;
 	type DataProvider = Staking;
-	#[cfg(feature = "fast-runtime")]
+	#[cfg(any(feature = "fast-runtime", feature = "runtime-benchmarks"))]
 	type Fallback = onchain::OnChainExecution<OnChainSeqPhragmen>;
-	#[cfg(not(feature = "fast-runtime"))]
+	#[cfg(not(any(feature = "fast-runtime", feature = "runtime-benchmarks")))]
 	type Fallback = frame_election_provider_support::NoElection<(
 		AccountId,
 		BlockNumber,
@@ -1133,10 +1134,27 @@ impl parachains_initializer::Config for Runtime {
 impl parachains_disputes::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
 	type RewardValidators = parachains_reward_points::RewardValidatorsWithEraPoints<Runtime>;
-	type SlashingHandler = ();
+	type SlashingHandler = parachains_slashing::SlashValidatorsForDisputes<ParasSlashing>;
 	type WeightInfo = weights::runtime_parachains_disputes::WeightInfo<Runtime>;
 }
 
+impl parachains_slashing::Config for Runtime {
+	type KeyOwnerProofSystem = Historical;
+	type KeyOwnerProof =
+		<Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(KeyTypeId, ValidatorId)>>::Proof;
+	type KeyOwnerIdentification = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
+		KeyTypeId,
+		ValidatorId,
+	)>>::IdentificationTuple;
+	type HandleReports = parachains_slashing::SlashingReportHandler<
+		Self::KeyOwnerIdentification,
+		Offences,
+		ReportLongevity,
+	>;
+	type WeightInfo = weights::runtime_parachains_disputes_slashing::WeightInfo<Runtime>;
+	type BenchmarkingConfig = parachains_slashing::BenchConfig<1000>;
+}
+
 parameter_types! {
 	pub const ParaDeposit: Balance = 40 * UNITS;
 }
@@ -1413,6 +1431,7 @@ construct_runtime! {
 		Hrmp: parachains_hrmp::{Pallet, Call, Storage, Event<T>, Config} = 60,
 		ParaSessionInfo: parachains_session_info::{Pallet, Storage} = 61,
 		ParasDisputes: parachains_disputes::{Pallet, Call, Storage, Event<T>} = 62,
+		ParasSlashing: parachains_slashing::{Pallet, Call, Storage, ValidateUnsigned} = 63,
 
 		// Parachain Onboarding Pallets. Start indices at 70 to leave room.
 		Registrar: paras_registrar::{Pallet, Call, Storage, Event<T>} = 70,
@@ -1497,6 +1516,7 @@ mod benches {
 		[runtime_parachains::configuration, Configuration]
 		[runtime_parachains::hrmp, Hrmp]
 		[runtime_parachains::disputes, ParasDisputes]
+		[runtime_parachains::disputes::slashing, ParasSlashing]
 		[runtime_parachains::initializer, Initializer]
 		[runtime_parachains::paras_inherent, ParaInherent]
 		[runtime_parachains::paras, Paras]
@@ -2013,6 +2033,7 @@ sp_api::impl_runtime_apis! {
 			impl frame_system_benchmarking::Config for Runtime {}
 			impl frame_benchmarking::baseline::Config for Runtime {}
 			impl pallet_nomination_pools_benchmarking::Config for Runtime {}
+			impl runtime_parachains::disputes::slashing::benchmarking::Config for Runtime {}
 
 			impl pallet_xcm_benchmarks::Config for Runtime {
 				type XcmConfig = XcmConfig;

runtime/kusama/src/weights/mod.rs

@@ -58,6 +58,7 @@ pub mod runtime_common_paras_registrar;
 pub mod runtime_common_slots;
 pub mod runtime_parachains_configuration;
 pub mod runtime_parachains_disputes;
+pub mod runtime_parachains_disputes_slashing;
 pub mod runtime_parachains_hrmp;
 pub mod runtime_parachains_initializer;
 pub mod runtime_parachains_paras;

runtime/kusama/src/weights/runtime_parachains_disputes_slashing.rs

@@ -0,0 +1,102 @@
+// Copyright 2017-2022 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot 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.
+
+// Polkadot 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 Polkadot.  If not, see <http://www.gnu.org/licenses/>.
+//! Autogenerated weights for `runtime_parachains::disputes::slashing`
+//!
+//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
+//! DATE: 2023-03-16, STEPS: `50`, REPEAT: `20`, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! WORST CASE MAP SIZE: `1000000`
+//! HOSTNAME: `bm3`, CPU: `Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz`
+//! EXECUTION: Some(Wasm), WASM-EXECUTION: Compiled, CHAIN: Some("kusama-dev"), DB CACHE: 1024
+
+// Executed Command:
+// target/production/polkadot
+// benchmark
+// pallet
+// --steps=50
+// --repeat=20
+// --extrinsic=*
+// --execution=wasm
+// --wasm-execution=compiled
+// --heap-pages=4096
+// --json-file=/var/lib/gitlab-runner/builds/zyw4fam_/0/parity/mirrors/polkadot/.git/.artifacts/bench.json
+// --pallet=runtime_parachains::disputes::slashing
+// --chain=kusama-dev
+// --header=./file_header.txt
+// --output=./runtime/kusama/src/weights/
+
+#![cfg_attr(rustfmt, rustfmt_skip)]
+#![allow(unused_parens)]
+#![allow(unused_imports)]
+
+use frame_support::{traits::Get, weights::Weight};
+use sp_std::marker::PhantomData;
+
+/// Weight functions for `runtime_parachains::disputes::slashing`.
+pub struct WeightInfo<T>(PhantomData<T>);
+impl<T: frame_system::Config> runtime_parachains::disputes::slashing::WeightInfo for WeightInfo<T> {
+	/// Storage: Session CurrentIndex (r:1 w:0)
+	/// Proof Skipped: Session CurrentIndex (max_values: Some(1), max_size: None, mode: Measured)
+	/// Storage: Historical HistoricalSessions (r:1 w:0)
+	/// Proof: Historical HistoricalSessions (max_values: None, max_size: Some(48), added: 2523, mode: MaxEncodedLen)
+	/// Storage: ParaSessionInfo Sessions (r:1 w:0)
+	/// Proof Skipped: ParaSessionInfo Sessions (max_values: None, max_size: None, mode: Measured)
+	/// Storage: ParasSlashing UnappliedSlashes (r:1 w:1)
+	/// Proof Skipped: ParasSlashing UnappliedSlashes (max_values: None, max_size: None, mode: Measured)
+	/// Storage: Offences ReportsByKindIndex (r:1 w:1)
+	/// Proof Skipped: Offences ReportsByKindIndex (max_values: None, max_size: None, mode: Measured)
+	/// Storage: Offences ConcurrentReportsIndex (r:1 w:1)
+	/// Proof Skipped: Offences ConcurrentReportsIndex (max_values: None, max_size: None, mode: Measured)
+	/// Storage: Offences Reports (r:1 w:1)
+	/// Proof Skipped: Offences Reports (max_values: None, max_size: None, mode: Measured)
+	/// Storage: Staking SlashRewardFraction (r:1 w:0)
+	/// Proof: Staking SlashRewardFraction (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
+	/// Storage: Staking ActiveEra (r:1 w:0)
+	/// Proof: Staking ActiveEra (max_values: Some(1), max_size: Some(13), added: 508, mode: MaxEncodedLen)
+	/// Storage: Staking ErasStartSessionIndex (r:1 w:0)
+	/// Proof: Staking ErasStartSessionIndex (max_values: None, max_size: Some(16), added: 2491, mode: MaxEncodedLen)
+	/// Storage: Staking Invulnerables (r:1 w:0)
+	/// Proof Skipped: Staking Invulnerables (max_values: Some(1), max_size: None, mode: Measured)
+	/// Storage: Staking ValidatorSlashInEra (r:1 w:1)
+	/// Proof: Staking ValidatorSlashInEra (max_values: None, max_size: Some(72), added: 2547, mode: MaxEncodedLen)
+	/// Storage: Staking SlashingSpans (r:1 w:1)
+	/// Proof Skipped: Staking SlashingSpans (max_values: None, max_size: None, mode: Measured)
+	/// Storage: Staking SpanSlash (r:1 w:1)
+	/// Proof: Staking SpanSlash (max_values: None, max_size: Some(76), added: 2551, mode: MaxEncodedLen)
+	/// Storage: Staking OffendingValidators (r:1 w:1)
+	/// Proof Skipped: Staking OffendingValidators (max_values: Some(1), max_size: None, mode: Measured)
+	/// Storage: Session Validators (r:1 w:0)
+	/// Proof Skipped: Session Validators (max_values: Some(1), max_size: None, mode: Measured)
+	/// Storage: Session DisabledValidators (r:1 w:1)
+	/// Proof Skipped: Session DisabledValidators (max_values: Some(1), max_size: None, mode: Measured)
+	/// Storage: System Digest (r:1 w:1)
+	/// Proof Skipped: System Digest (max_values: Some(1), max_size: None, mode: Measured)
+	/// Storage: Staking UnappliedSlashes (r:1 w:1)
+	/// Proof Skipped: Staking UnappliedSlashes (max_values: None, max_size: None, mode: Measured)
+	/// The range of component `n` is `[4, 1000]`.
+	fn report_dispute_lost(n: u32, ) -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `5724 + n * (284 ±0)`
+		//  Estimated: `106621 + n * (3726 ±0)`
+		// Minimum execution time: 117_366_000 picoseconds.
+		Weight::from_parts(141_256_413, 0)
+			.saturating_add(Weight::from_parts(0, 106621))
+			// Standard Error: 2_293
+			.saturating_add(Weight::from_parts(290_124, 0).saturating_mul(n.into()))
+			.saturating_add(T::DbWeight::get().reads(19))
+			.saturating_add(T::DbWeight::get().writes(11))
+			.saturating_add(Weight::from_parts(0, 3726).saturating_mul(n.into()))
+	}
+}