package app import ( "encoding/json" "log" tmproto "github.com/tendermint/tendermint/proto/tendermint/types" servertypes "github.com/cosmos/cosmos-sdk/server/types" sdk "github.com/cosmos/cosmos-sdk/types" slashingtypes "github.com/cosmos/cosmos-sdk/x/slashing/types" "github.com/cosmos/cosmos-sdk/x/staking" stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types" ) // ExportAppStateAndValidators export the state of the app for a genesis file func (app *App) ExportAppStateAndValidators(forZeroHeight bool, jailWhiteList []string, ) (servertypes.ExportedApp, error) { // as if they could withdraw from the start of the next block // block time is not available and defaults to Jan 1st, 0001 ctx := app.NewContext(true, tmproto.Header{Height: app.LastBlockHeight()}) height := app.LastBlockHeight() + 1 if forZeroHeight { height = 0 app.prepForZeroHeightGenesis(ctx, jailWhiteList) } genState := app.mm.ExportGenesis(ctx, app.appCodec) newAppState, err := json.MarshalIndent(genState, "", " ") if err != nil { return servertypes.ExportedApp{}, err } validators, err := staking.WriteValidators(ctx, app.stakingKeeper) return servertypes.ExportedApp{ AppState: newAppState, Validators: validators, Height: height, ConsensusParams: app.BaseApp.GetConsensusParams(ctx), }, err } // prepare for fresh start at zero height // NOTE zero height genesis is a temporary feature which will be deprecated // in favour of export at a block height func (app *App) prepForZeroHeightGenesis(ctx sdk.Context, jailWhiteList []string) { applyWhiteList := false // Check if there is a whitelist if len(jailWhiteList) > 0 { applyWhiteList = true } whiteListMap := make(map[string]bool) for _, addr := range jailWhiteList { _, err := sdk.ValAddressFromBech32(addr) if err != nil { log.Fatal(err) } whiteListMap[addr] = true } /* Just to be safe, assert the invariants on current state. */ app.crisisKeeper.AssertInvariants(ctx) /* Handle fee distribution state. */ // withdraw all validator commission app.stakingKeeper.IterateValidators(ctx, func(_ int64, val stakingtypes.ValidatorI) (stop bool) { _, _ = app.distrKeeper.WithdrawValidatorCommission(ctx, val.GetOperator()) return false }) // withdraw all delegator rewards dels := app.stakingKeeper.GetAllDelegations(ctx) for _, delegation := range dels { valAddr, err := sdk.ValAddressFromBech32(delegation.ValidatorAddress) if err != nil { panic(err) } delAddr, err := sdk.AccAddressFromBech32(delegation.DelegatorAddress) if err != nil { panic(err) } _, _ = app.distrKeeper.WithdrawDelegationRewards(ctx, delAddr, valAddr) } // clear validator slash events app.distrKeeper.DeleteAllValidatorSlashEvents(ctx) // clear validator historical rewards app.distrKeeper.DeleteAllValidatorHistoricalRewards(ctx) // set context height to zero height := ctx.BlockHeight() ctx = ctx.WithBlockHeight(0) // reinitialize all validators app.stakingKeeper.IterateValidators(ctx, func(_ int64, val stakingtypes.ValidatorI) (stop bool) { // donate any unwithdrawn outstanding reward fraction tokens to the community pool scraps := app.distrKeeper.GetValidatorOutstandingRewardsCoins(ctx, val.GetOperator()) feePool := app.distrKeeper.GetFeePool(ctx) feePool.CommunityPool = feePool.CommunityPool.Add(scraps...) app.distrKeeper.SetFeePool(ctx, feePool) app.distrKeeper.Hooks().AfterValidatorCreated(ctx, val.GetOperator()) return false }) // reinitialize all delegations for _, del := range dels { valAddr, err := sdk.ValAddressFromBech32(del.ValidatorAddress) if err != nil { panic(err) } delAddr, err := sdk.AccAddressFromBech32(del.DelegatorAddress) if err != nil { panic(err) } app.distrKeeper.Hooks().BeforeDelegationCreated(ctx, delAddr, valAddr) app.distrKeeper.Hooks().AfterDelegationModified(ctx, delAddr, valAddr) } // reset context height ctx = ctx.WithBlockHeight(height) /* Handle staking state. */ // iterate through redelegations, reset creation height app.stakingKeeper.IterateRedelegations(ctx, func(_ int64, red stakingtypes.Redelegation) (stop bool) { for i := range red.Entries { red.Entries[i].CreationHeight = 0 } app.stakingKeeper.SetRedelegation(ctx, red) return false }) // iterate through unbonding delegations, reset creation height app.stakingKeeper.IterateUnbondingDelegations(ctx, func(_ int64, ubd stakingtypes.UnbondingDelegation) (stop bool) { for i := range ubd.Entries { ubd.Entries[i].CreationHeight = 0 } app.stakingKeeper.SetUnbondingDelegation(ctx, ubd) return false }) // Iterate through validators by power descending, reset bond heights, and // update bond intra-tx counters. store := ctx.KVStore(app.keys[stakingtypes.StoreKey]) iter := sdk.KVStoreReversePrefixIterator(store, stakingtypes.ValidatorsKey) counter := int16(0) for ; iter.Valid(); iter.Next() { addr := sdk.ValAddress(stakingtypes.AddressFromValidatorsKey(iter.Key())) validator, found := app.stakingKeeper.GetValidator(ctx, addr) if !found { panic("expected validator, not found") } validator.UnbondingHeight = 0 if applyWhiteList && !whiteListMap[addr.String()] { validator.Jailed = true } app.stakingKeeper.SetValidator(ctx, validator) counter++ } iter.Close() _, err := app.stakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx) if err != nil { log.Fatal(err) } /* Handle slashing state. */ // reset start height on signing infos app.slashingKeeper.IterateValidatorSigningInfos( ctx, func(addr sdk.ConsAddress, info slashingtypes.ValidatorSigningInfo) (stop bool) { info.StartHeight = 0 app.slashingKeeper.SetValidatorSigningInfo(ctx, addr, info) return false }, ) }