(no commit message provided)

app/export.go

@@ -0,0 +1,253 @@
+package app
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+
+	cmtproto "github.com/cometbft/cometbft/proto/tendermint/types"
+
+	storetypes "cosmossdk.io/store/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 exports the state of the application for a genesis
+// file.
+func (app *SonrApp) ExportAppStateAndValidators(forZeroHeight bool, jailAllowedAddrs, modulesToExport []string) (servertypes.ExportedApp, error) {
+	// as if they could withdraw from the start of the next block
+	ctx := app.NewContextLegacy(true, cmtproto.Header{Height: app.LastBlockHeight()})
+
+	// We export at last height + 1, because that's the height at which
+	// CometBFT will start InitChain.
+	height := app.LastBlockHeight() + 1
+	if forZeroHeight {
+		height = 0
+		app.prepForZeroHeightGenesis(ctx, jailAllowedAddrs)
+	}
+
+	genState, err := app.ModuleManager.ExportGenesisForModules(ctx, app.appCodec, modulesToExport)
+	if err != nil {
+		return servertypes.ExportedApp{}, err
+	}
+
+	appState, err := json.MarshalIndent(genState, "", "  ")
+	if err != nil {
+		return servertypes.ExportedApp{}, err
+	}
+
+	validators, err := staking.WriteValidators(ctx, app.StakingKeeper)
+	return servertypes.ExportedApp{
+		AppState:        appState,
+		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 favor of export at a block height
+func (app *SonrApp) 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
+	err := app.StakingKeeper.IterateValidators(ctx, func(_ int64, val stakingtypes.ValidatorI) (stop bool) {
+		valBz, err := app.StakingKeeper.ValidatorAddressCodec().StringToBytes(val.GetOperator())
+		if err != nil {
+			panic(err)
+		}
+		_, _ = app.DistrKeeper.WithdrawValidatorCommission(ctx, valBz)
+		return false
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	// withdraw all delegator rewards
+	dels, err := app.StakingKeeper.GetAllDelegations(ctx)
+	if err != nil {
+		panic(err)
+	}
+
+	for _, delegation := range dels {
+		valAddr, err := sdk.ValAddressFromBech32(delegation.ValidatorAddress)
+		if err != nil {
+			panic(err)
+		}
+
+		delAddr := sdk.MustAccAddressFromBech32(delegation.DelegatorAddress)
+
+		if _, err = app.DistrKeeper.WithdrawDelegationRewards(ctx, delAddr, valAddr); 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
+	err = app.StakingKeeper.IterateValidators(ctx, func(_ int64, val stakingtypes.ValidatorI) (stop bool) {
+		valBz, err := app.StakingKeeper.ValidatorAddressCodec().StringToBytes(val.GetOperator())
+		if err != nil {
+			panic(err)
+		}
+		// donate any unwithdrawn outstanding reward fraction tokens to the community pool
+		scraps, err := app.DistrKeeper.GetValidatorOutstandingRewardsCoins(ctx, valBz)
+		if err != nil {
+			panic(err)
+		}
+		feePool, err := app.DistrKeeper.FeePool.Get(ctx)
+		if err != nil {
+			panic(err)
+		}
+		feePool.CommunityPool = feePool.CommunityPool.Add(scraps...)
+		if err := app.DistrKeeper.FeePool.Set(ctx, feePool); err != nil {
+			panic(err)
+		}
+
+		if err := app.DistrKeeper.Hooks().AfterValidatorCreated(ctx, valBz); err != nil {
+			panic(err)
+		}
+		return false
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	// reinitialize all delegations
+	for _, del := range dels {
+		valAddr, err := sdk.ValAddressFromBech32(del.ValidatorAddress)
+		if err != nil {
+			panic(err)
+		}
+		delAddr := sdk.MustAccAddressFromBech32(del.DelegatorAddress)
+
+		if err := app.DistrKeeper.Hooks().BeforeDelegationCreated(ctx, delAddr, valAddr); err != nil {
+			// never called as BeforeDelegationCreated always returns nil
+			panic(fmt.Errorf("error while incrementing period: %w", err))
+		}
+
+		if err := app.DistrKeeper.Hooks().AfterDelegationModified(ctx, delAddr, valAddr); err != nil {
+			// never called as AfterDelegationModified always returns nil
+			panic(fmt.Errorf("error while creating a new delegation period record: %w", err))
+		}
+	}
+
+	// reset context height
+	ctx = ctx.WithBlockHeight(height)
+
+	// Handle staking state.
+
+	// iterate through redelegations, reset creation height
+	err = app.StakingKeeper.IterateRedelegations(ctx, func(_ int64, red stakingtypes.Redelegation) (stop bool) {
+		for i := range red.Entries {
+			red.Entries[i].CreationHeight = 0
+		}
+		err = app.StakingKeeper.SetRedelegation(ctx, red)
+		if err != nil {
+			panic(err)
+		}
+		return false
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	// iterate through unbonding delegations, reset creation height
+	err = app.StakingKeeper.IterateUnbondingDelegations(ctx, func(_ int64, ubd stakingtypes.UnbondingDelegation) (stop bool) {
+		for i := range ubd.Entries {
+			ubd.Entries[i].CreationHeight = 0
+		}
+		err = app.StakingKeeper.SetUnbondingDelegation(ctx, ubd)
+		if err != nil {
+			panic(err)
+		}
+		return false
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	// Iterate through validators by power descending, reset bond heights, and
+	// update bond intra-tx counters.
+	store := ctx.KVStore(app.GetKey(stakingtypes.StoreKey))
+	iter := storetypes.KVStoreReversePrefixIterator(store, stakingtypes.ValidatorsKey)
+
+	for ; iter.Valid(); iter.Next() {
+		addr := sdk.ValAddress(stakingtypes.AddressFromValidatorsKey(iter.Key()))
+		validator, err := app.StakingKeeper.GetValidator(ctx, addr)
+		if err != nil {
+			panic("expected validator, not found")
+		}
+
+		validator.UnbondingHeight = 0
+		if applyAllowedAddrs && !allowedAddrsMap[addr.String()] {
+			validator.Jailed = true
+		}
+
+		err = app.StakingKeeper.SetValidator(ctx, validator)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	if err := iter.Close(); err != nil {
+		app.Logger().Error("error while closing the key-value store reverse prefix iterator: ", err)
+		return
+	}
+
+	_, err = app.StakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Handle slashing state.
+
+	// reset start height on signing infos
+	err = app.SlashingKeeper.IterateValidatorSigningInfos(
+		ctx,
+		func(addr sdk.ConsAddress, info slashingtypes.ValidatorSigningInfo) (stop bool) {
+			info.StartHeight = 0
+			if err := app.SlashingKeeper.SetValidatorSigningInfo(ctx, addr, info); err != nil {
+				panic(err)
+			}
+			return false
+		},
+	)
+	if err != nil {
+		panic(err)
+	}
+}