Store validator approval-stakes in TargetList, use for ranking validators.

bin/node/runtime/src/lib.rs

@@ -560,6 +560,7 @@ impl pallet_staking::Config for Runtime {
 	type ElectionProvider = ElectionProviderMultiPhase;
 	type GenesisElectionProvider = onchain::UnboundedExecution<OnChainSeqPhragmen>;
 	type VoterList = BagsList;
+	type TargetList = TargetBagsList;
 	type MaxUnlockingChunks = ConstU32<32>;
 	type OnStakerSlash = NominationPools;
 	type WeightInfo = pallet_staking::weights::SubstrateWeight<Runtime>;
@@ -695,14 +696,29 @@ impl pallet_election_provider_multi_phase::Config for Runtime {
 
 parameter_types! {
 	pub const BagThresholds: &'static [u64] = &voter_bags::THRESHOLDS;
+	pub BagThresholdsBalance: &'static [Balance] = &voter_bags::THRESHOLDS_BALANCE;
 }
 
-impl pallet_bags_list::Config for Runtime {
+type VoterBagsListInstance = pallet_bags_list::Instance1;
+impl pallet_bags_list::Config<VoterBagsListInstance> for Runtime {
 	type Event = Event;
-	type ScoreProvider = Staking;
-	type WeightInfo = pallet_bags_list::weights::SubstrateWeight<Runtime>;
 	type BagThresholds = BagThresholds;
+	/// The voter bags-list is loosely kept up to date, and the real source of truth for the score
+	/// of each node is the staking pallet.
+	type ScoreProvider = Staking;
 	type Score = VoteWeight;
+	type WeightInfo = pallet_bags_list::weights::SubstrateWeight<Runtime>;
+}
+
+type TargetBagsListInstance = pallet_bags_list::Instance2;
+impl pallet_bags_list::Config<TargetBagsListInstance> for Runtime {
+	type Event = Event;
+	// The bags-list itself will be the source of truth about the approval stakes. This implies that
+	// staking should keep the approval stakes up to date at all times.
+	type ScoreProvider = TargetBagsList;
+	type BagThresholds = BagThresholdsBalance;
+	type Score = Balance;
+	type WeightInfo = pallet_bags_list::weights::SubstrateWeight<Runtime>;
 }
 
 parameter_types! {
@@ -1496,7 +1512,8 @@ construct_runtime!(
 		Gilt: pallet_gilt,
 		Uniques: pallet_uniques,
 		TransactionStorage: pallet_transaction_storage,
-		BagsList: pallet_bags_list,
+		VoterBagsList: pallet_bags_list::<Instance1>,
+		TargetBagsList: pallet_bags_list::<Instance2>,
 		StateTrieMigration: pallet_state_trie_migration,
 		ChildBounties: pallet_child_bounties,
 		Referenda: pallet_referenda,
@@ -1545,7 +1562,7 @@ pub type Executive = frame_executive::Executive<
 	frame_system::ChainContext<Runtime>,
 	Runtime,
 	AllPalletsWithSystem,
-	pallet_bags_list::migrations::CheckCounterPrefix<Runtime>,
+	(),
 >;
 
 /// MMR helper types.

bin/node/runtime/src/voter_bags.rs

@@ -233,3 +233,206 @@ pub const THRESHOLDS: [u64; 200] = [
 	17_356_326_621_502_140_416,
 	18_446_744_073_709_551_615,
 ];
+
+pub const THRESHOLDS_BALANCE: [crate::Balance; 200] = [
+	100_000_000_000_000,
+	106_282_535_907_434,
+	112_959_774_389_150,
+	120_056_512_776_105,
+	127_599_106_300_477,
+	135_615_565_971_369,
+	144_135_662_599_590,
+	153_191_037_357_827,
+	162_815_319_286_803,
+	173_044_250_183_800,
+	183_915_817_337_347,
+	195_470_394_601_017,
+	207_750_892_330_229,
+	220_802_916_738_890,
+	234_674_939_267_673,
+	249_418_476_592_914,
+	265_088_281_944_639,
+	281_742_548_444_211,
+	299_443_125_216_738,
+	318_255_747_080_822,
+	338_250_278_668_647,
+	359_500_973_883_001,
+	382_086_751_654_776,
+	406_091_489_025_036,
+	431_604_332_640_068,
+	458_720_029_816_222,
+	487_539_280_404_019,
+	518_169_110_758_247,
+	550_723_271_202_866,
+	585_322_658_466_782,
+	622_095_764_659_305,
+	661_179_154_452_653,
+	702_717_972_243_610,
+	746_866_481_177_808,
+	793_788_636_038_393,
+	843_658_692_126_636,
+	896_661_852_395_681,
+	952_994_955_240_703,
+	1_012_867_205_499_736,
+	1_076_500_951_379_881,
+	1_144_132_510_194_192,
+	1_216_013_045_975_769,
+	1_292_409_502_228_280,
+	1_373_605_593_276_862,
+	1_459_902_857_901_004,
+	1_551_621_779_162_291,
+	1_649_102_974_585_730,
+	1_752_708_461_114_642,
+	1_862_822_999_536_805,
+	1_979_855_523_374_646,
+	2_104_240_657_545_975,
+	2_236_440_332_435_128,
+	2_376_945_499_368_703,
+	2_526_277_953_866_680,
+	2_684_992_273_439_945,
+	2_853_677_877_130_641,
+	3_032_961_214_443_876,
+	3_223_508_091_799_862,
+	3_426_026_145_146_232,
+	3_641_267_467_913_124,
+	3_870_031_404_070_482,
+	4_113_167_516_660_186,
+	4_371_578_742_827_277,
+	4_646_224_747_067_156,
+	4_938_125_485_141_739,
+	5_248_364_991_899_922,
+	5_578_095_407_069_235,
+	5_928_541_253_969_291,
+	6_301_003_987_036_955,
+	6_696_866_825_051_405,
+	7_117_599_888_008_300,
+	7_564_765_656_719_910,
+	8_040_024_775_416_580,
+	8_545_142_218_898_723,
+	9_081_993_847_142_344,
+	9_652_573_371_700_016,
+	10_258_999_759_768_490,
+	10_903_525_103_419_522,
+	11_588_542_983_217_942,
+	12_316_597_357_287_042,
+	13_090_392_008_832_678,
+	13_912_800_587_211_472,
+	14_786_877_279_832_732,
+	15_715_868_154_526_436,
+	16_703_223_214_499_558,
+	17_752_609_210_649_358,
+	18_867_923_258_814_856,
+	20_053_307_312_537_008,
+	21_313_163_545_075_252,
+	22_652_170_697_804_756,
+	24_075_301_455_707_600,
+	25_587_840_914_485_432,
+	27_195_406_207_875_088,
+	28_903_967_368_057_400,
+	30_719_869_496_628_636,
+	32_649_856_328_471_220,
+	34_701_095_276_033_064,
+	36_881_204_047_022_752,
+	39_198_278_934_370_992,
+	41_660_924_883_519_016,
+	44_278_287_448_695_240,
+	47_060_086_756_856_400,
+	50_016_653_605_425_536,
+	53_158_967_827_883_320,
+	56_498_699_069_691_424,
+	60_048_250_125_977_912,
+	63_820_803_001_928_304,
+	67_830_367_866_937_216,
+	72_091_835_084_322_176,
+	76_621_030_509_822_880,
+	81_434_774_264_248_528,
+	86_550_943_198_537_824,
+	91_988_537_283_208_848,
+	97_767_750_168_749_840,
+	103_910_044_178_992_000,
+	110_438_230_015_967_792,
+	117_376_551_472_255_616,
+	124_750_775_465_407_920,
+	132_588_287_728_824_640,
+	140_918_194_514_440_064,
+	149_771_430_684_917_568,
+	159_180_874_596_775_264,
+	169_181_470_201_085_280,
+	179_810_356_815_193_344,
+	191_107_007_047_393_216,
+	203_113_373_386_768_288,
+	215_874_044_002_592_672,
+	229_436_408_331_885_600,
+	243_850_833_070_063_392,
+	259_170_849_218_267_264,
+	275_453_350_882_006_752,
+	292_758_806_559_399_232,
+	311_151_483_703_668_992,
+	330_699_687_393_865_920,
+	351_476_014_000_157_824,
+	373_557_620_785_735_808,
+	397_026_512_446_556_096,
+	421_969_845_653_044_224,
+	448_480_252_724_740_928,
+	476_656_185_639_923_904,
+	506_602_281_657_757_760,
+	538_429_751_910_786_752,
+	572_256_794_410_890_176,
+	608_209_033_002_485_632,
+	646_419_983_893_124_352,
+	687_031_551_494_039_552,
+	730_194_555_412_054_016,
+	776_069_290_549_944_960,
+	824_826_122_395_314_176,
+	876_646_119_708_695_936,
+	931_721_726_960_522_368,
+	990_257_479_014_182_144,
+	1_052_470_760_709_299_712,
+	1_118_592_614_166_106_112,
+	1_188_868_596_808_997_376,
+	1_263_559_693_295_730_432,
+	1_342_943_284_738_898_688,
+	1_427_314_178_819_094_784,
+	1_516_985_704_615_302_400,
+	1_612_290_876_218_400_768,
+	1_713_583_629_449_105_408,
+	1_821_240_136_273_157_632,
+	1_935_660_201_795_120_128,
+	2_057_268_749_018_809_600,
+	2_186_517_396_888_336_384,
+	2_323_886_137_470_138_880,
+	2_469_885_118_504_583_168,
+	2_625_056_537_947_004_416,
+	2_789_976_657_533_970_944,
+	2_965_257_942_852_572_160,
+	3_151_551_337_860_326_400,
+	3_349_548_682_302_620_672,
+	3_559_985_281_005_267_968,
+	3_783_642_634_583_792_128,
+	4_021_351_341_710_503_936,
+	4_273_994_183_717_548_544,
+	4_542_509_402_991_247_872,
+	4_827_894_187_332_742_144,
+	5_131_208_373_224_844_288,
+	5_453_578_381_757_959_168,
+	5_796_201_401_831_965_696,
+	6_160_349_836_169_256_960,
+	6_547_376_026_650_146_816,
+	6_958_717_276_519_173_120,
+	7_395_901_188_113_309_696,
+	7_860_551_335_934_872_576,
+	8_354_393_296_137_270_272,
+	8_879_261_054_815_360_000,
+	9_437_103_818_898_946_048,
+	10_029_993_254_943_105_024,
+	10_660_131_182_698_121_216,
+	11_329_857_752_030_707_712,
+	12_041_660_133_563_240_448,
+	12_798_181_755_305_525_248,
+	13_602_232_119_581_272_064,
+	14_456_797_236_706_498_560,
+	15_365_050_714_167_523_328,
+	16_330_365_542_480_556_032,
+	17_356_326_621_502_140_416,
+	18_446_744_073_709_551_615,
+];