github.com/fibonacci-chain/fbc@v0.0.0-20231124064014-c7636198c1e9/app/export.go

package app

import (
	"encoding/json"
	"log"

	abci "github.com/fibonacci-chain/fbc/libs/tendermint/abci/types"
	tmtypes "github.com/fibonacci-chain/fbc/libs/tendermint/types"

	"github.com/fibonacci-chain/fbc/libs/cosmos-sdk/codec"
	"github.com/fibonacci-chain/fbc/libs/cosmos-sdk/simapp"
	sdk "github.com/fibonacci-chain/fbc/libs/cosmos-sdk/types"
	"github.com/fibonacci-chain/fbc/x/slashing"
	"github.com/fibonacci-chain/fbc/x/staking"
	"github.com/fibonacci-chain/fbc/x/staking/exported"

	ethcdc "github.com/fibonacci-chain/fbc/app/codec"
)

// NewDefaultGenesisState generates the default state for the application.
func NewDefaultGenesisState() simapp.GenesisState {
	_ = ethcdc.MakeCodec(ModuleBasics)
	return ModuleBasics.DefaultGenesis()
}

// ExportAppStateAndValidators exports the state of the application for a genesis
// file.
func (app *FBChainApp) ExportAppStateAndValidators(
	forZeroHeight bool, jailWhiteList []string,
) (appState json.RawMessage, validators []tmtypes.GenesisValidator, err error) {

	// Creates context with current height and checks txs for ctx to be usable by start of next block
	ctx := app.NewContext(true, abci.Header{Height: app.LastBlockHeight()})

	if forZeroHeight {
		app.prepForZeroHeightGenesis(ctx, jailWhiteList)
	}

	// Export genesis to be used by SDK modules
	genState := app.mm.ExportGenesis(ctx)
	appState, err = codec.MarshalJSONIndent(app.marshal.GetCdc(), genState)
	if err != nil {
		return nil, nil, err
	}

	// Write validators to staking module to be used by TM node
	//todo need resolve
	//	validators = staking.WriteValidators(ctx, app.StakingKeeper)
	return appState, validators, 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 *FBChainApp) 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 exported.ValidatorI) (stop bool) {
		_, _ = app.DistrKeeper.WithdrawValidatorCommission(ctx, val.GetOperator())
		return false
	})
	//todo need resolved later
	// withdraw all delegator rewards
	//dels := app.StakingKeeper.GetAllDelegations(ctx)
	//for _, delegation := range dels {
	//	_, _ = app.DistrKeeper.WithdrawDelegationRewards(ctx, delegation.DelegatorAddress, delegation.ValidatorAddress)
	//}

	// 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.SetBlockHeight(0)
	//
	//// reinitialize all validators
	//app.StakingKeeper.IterateValidators(ctx, func(_ int64, val exported.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
	//})

	//todo need resolve
	// reinitialize all delegations
	//for _, del := range dels {
	//	app.DistrKeeper.Hooks().BeforeDelegationCreated(ctx, del.DelegatorAddress, del.ValidatorAddress)
	//	app.DistrKeeper.Hooks().AfterDelegationModified(ctx, del.DelegatorAddress, del.ValidatorAddress)
	//}

	// reset context height
	//ctx.SetBlockHeight(height)

	/* Handle staking state. */

	//todo need resolve
	//// iterate through redelegations, reset creation height
	//app.StakingKeeper.IterateRedelegations(ctx, func(_ int64, red staking.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 staking.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[staking.StoreKey])
	iter := sdk.KVStoreReversePrefixIterator(store, staking.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 applyWhiteList && !whiteListMap[addr.String()] {
			validator.Jailed = true
		}

		app.StakingKeeper.SetValidator(ctx, validator)
		counter++
	}

	iter.Close()

	_ = app.StakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx)

	/* Handle slashing state. */

	// reset start height on signing infos
	app.SlashingKeeper.IterateValidatorSigningInfos(
		ctx,
		func(addr sdk.ConsAddress, info slashing.ValidatorSigningInfo) (stop bool) {
			info.StartHeight = 0
			app.SlashingKeeper.SetValidatorSigningInfo(ctx, addr, info)
			return false
		},
	)
}