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export.go
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export.go
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package app
import (
"encoding/json"
"fmt"
servertypes "github.com/cosmos/cosmos-sdk/server/types"
sdk "github.com/cosmos/cosmos-sdk/types"
slashingtypes "github.com/cosmos/cosmos-sdk/x/slashing/types"
tmproto "github.com/cometbft/cometbft/proto/tendermint/types"
tmtypes "github.com/cometbft/cometbft/types"
)
// ExportAppStateAndValidators exports the state of the application for a genesis
// file.
func (app *App) ExportAppStateAndValidators(
forZeroHeight bool, jailAllowedAddrs, modulesToExport []string,
) (servertypes.ExportedApp, error) {
// as if they could withdraw from the start of the 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
app.prepForZeroHeightGenesis(ctx, jailAllowedAddrs)
}
genState := app.MM.ExportGenesis(ctx, app.appCodec)
appState, err := json.MarshalIndent(genState, "", " ")
if err != nil {
return servertypes.ExportedApp{}, err
}
validators, err := app.GetValidatorSet(ctx)
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 favour of export at a block height
func (app *App) prepForZeroHeightGenesis(ctx sdk.Context, jailAllowedAddrs []string) {
// 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 {
// log.Fatal(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) {
// _, err := app.DistrKeeper.WithdrawValidatorCommission(ctx, val.GetOperator())
// if err != nil {
// panic(err)
// }
// return false
// })
// withdraw all delegator rewards
// dels := app.StakingKeeper.GetAllDelegations(ctx)
// for _, delegation := range dels {
// _, err := app.DistrKeeper.WithdrawDelegationRewards(ctx, delegation.GetDelegatorAddr(), delegation.GetValidatorAddr())
// if err != nil {
// panic(err)
// }
// }
// 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 {
// app.DistrKeeper.Hooks().BeforeDelegationCreated(ctx, del.GetDelegatorAddr(), del.GetValidatorAddr())
// app.DistrKeeper.Hooks().AfterDelegationModified(ctx, del.GetDelegatorAddr(), del.GetValidatorAddr())
// }
// 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(iter.Key()[1:])
// validator, found := app.StakingKeeper.GetValidator(ctx, addr)
// if !found {
// panic("expected validator, not found")
// }
// validator.UnbondingHeight = 0
// if applyAllowedAddrs && !allowedAddrsMap[addr.String()] {
// validator.Jailed = true
// }
// app.StakingKeeper.SetValidator(ctx, validator)
// counter++
// }
// iter.Close()
// if _, err := app.StakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx); err != nil {
// panic(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
},
)
}
// GetValidatorSet returns a slice of bonded validators.
func (app *App) GetValidatorSet(ctx sdk.Context) ([]tmtypes.GenesisValidator, error) {
cVals := app.ConsumerKeeper.GetAllCCValidator(ctx)
if len(cVals) == 0 {
return nil, fmt.Errorf("empty validator set")
}
vals := []tmtypes.GenesisValidator{}
for _, v := range cVals {
vals = append(vals, tmtypes.GenesisValidator{Address: v.Address, Power: v.Power})
}
return vals, nil
}