package app import ( "encoding/json" "fmt" tmproto "github.com/tendermint/tendermint/proto/tendermint/types" servertypes "github.com/cosmos/cosmos-sdk/server/types" "github.com/cosmos/cosmos-sdk/simapp" 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" "github.com/tharsis/ethermint/encoding" ) // NewDefaultGenesisState generates the default state for the application. func NewDefaultGenesisState() simapp.GenesisState { encCfg := encoding.MakeConfig(ModuleBasics) return ModuleBasics.DefaultGenesis(encCfg.Marshaler) } // ExportAppStateAndValidators exports the state of the application for a genesis // file. func (app *EthermintApp) ExportAppStateAndValidators( forZeroHeight bool, jailAllowedAddrs []string, ) (servertypes.ExportedApp, error) { // Creates context with current height and checks txs for ctx to be usable by start of next block ctx := app.NewContext(true, tmproto.Header{Height: app.LastBlockHeight()}) // We export at last height + 1, because that's the height at which // Tendermint will start InitChain. height := app.LastBlockHeight() + 1 if forZeroHeight { height = 0 if err := app.prepForZeroHeightGenesis(ctx, jailAllowedAddrs); err != nil { return servertypes.ExportedApp{}, err } } genState := app.mm.ExportGenesis(ctx, app.appCodec) appState, err := json.MarshalIndent(genState, "", " ") if err != nil { return servertypes.ExportedApp{}, err } validators, err := staking.WriteValidators(ctx, app.StakingKeeper) if err != nil { return servertypes.ExportedApp{}, err } return servertypes.ExportedApp{ AppState: appState, Validators: validators, Height: height, ConsensusParams: app.BaseApp.GetConsensusParams(ctx), }, nil } // prepare for fresh start at zero height // NOTE zero height genesis is a temporary feature which will be deprecated // in favor of export at a block height func (app *EthermintApp) prepForZeroHeightGenesis(ctx sdk.Context, jailAllowedAddrs []string) error { applyAllowedAddrs := false // check if there is a allowed address list if len(jailAllowedAddrs) > 0 { applyAllowedAddrs = true } allowedAddrsMap := make(map[string]bool) for _, addr := range jailAllowedAddrs { _, err := sdk.ValAddressFromBech32(addr) if err != nil { return err } allowedAddrsMap[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 { return err } delAddr, err := sdk.AccAddressFromBech32(delegation.DelegatorAddress) if err != nil { return 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 { return err } delAddr, err := sdk.AccAddressFromBech32(del.DelegatorAddress) if err != nil { return 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) for ; iter.Valid(); iter.Next() { addr := sdk.ValAddress(stakingtypes.AddressFromValidatorsKey(iter.Key())) validator, found := app.StakingKeeper.GetValidator(ctx, addr) if !found { return fmt.Errorf("expected validator %s not found", addr) } validator.UnbondingHeight = 0 if applyAllowedAddrs && !allowedAddrsMap[addr.String()] { validator.Jailed = true } app.StakingKeeper.SetValidator(ctx, validator) } iter.Close() if _, err := app.StakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx); err != nil { return 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 }, ) return nil }