0g-chain/x/hard/genesis.go

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package hard
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/kava-labs/kava/x/hard/keeper"
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"github.com/kava-labs/kava/x/hard/types"
)
// InitGenesis initializes the store state from a genesis state.
func InitGenesis(ctx sdk.Context, k keeper.Keeper, accountKeeper types.AccountKeeper, gs types.GenesisState) {
if err := gs.Validate(); err != nil {
panic(fmt.Sprintf("failed to validate %s genesis state: %s", types.ModuleName, err))
}
k.SetParams(ctx, gs.Params)
for _, mm := range gs.Params.MoneyMarkets {
k.SetMoneyMarket(ctx, mm.Denom, mm)
}
for _, gat := range gs.PreviousAccumulationTimes {
k.SetPreviousAccrualTime(ctx, gat.CollateralType, gat.PreviousAccumulationTime)
k.SetSupplyInterestFactor(ctx, gat.CollateralType, gat.SupplyInterestFactor)
k.SetBorrowInterestFactor(ctx, gat.CollateralType, gat.BorrowInterestFactor)
}
for _, deposit := range gs.Deposits {
k.SetDeposit(ctx, deposit)
}
for _, borrow := range gs.Borrows {
k.SetBorrow(ctx, borrow)
}
k.SetSuppliedCoins(ctx, gs.TotalSupplied)
k.SetBorrowedCoins(ctx, gs.TotalBorrowed)
k.SetTotalReserves(ctx, gs.TotalReserves)
// check if the module account exists
DepositModuleAccount := accountKeeper.GetModuleAccount(ctx, types.ModuleAccountName)
if DepositModuleAccount == nil {
panic(fmt.Sprintf("%s module account has not been set", DepositModuleAccount))
}
}
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// ExportGenesis export genesis state for hard module
func ExportGenesis(ctx sdk.Context, k keeper.Keeper) types.GenesisState {
params := k.GetParams(ctx)
gats := types.GenesisAccumulationTimes{}
deposits := types.Deposits{}
borrows := types.Borrows{}
k.IterateDeposits(ctx, func(d types.Deposit) bool {
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k.BeforeDepositModified(ctx, d)
syncedDeposit, found := k.GetSyncedDeposit(ctx, d.Depositor)
if !found {
panic(fmt.Sprintf("syncable deposit not found for %s", d.Depositor))
}
deposits = append(deposits, syncedDeposit)
return false
})
k.IterateBorrows(ctx, func(b types.Borrow) bool {
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k.BeforeBorrowModified(ctx, b)
syncedBorrow, found := k.GetSyncedBorrow(ctx, b.Borrower)
if !found {
panic(fmt.Sprintf("syncable borrow not found for %s", b.Borrower))
}
borrows = append(borrows, syncedBorrow)
return false
})
totalSupplied, found := k.GetSuppliedCoins(ctx)
if !found {
totalSupplied = types.DefaultTotalSupplied
}
totalBorrowed, found := k.GetBorrowedCoins(ctx)
if !found {
totalBorrowed = types.DefaultTotalBorrowed
}
totalReserves, found := k.GetTotalReserves(ctx)
if !found {
totalReserves = types.DefaultTotalReserves
}
for _, mm := range params.MoneyMarkets {
supplyFactor, f := k.GetSupplyInterestFactor(ctx, mm.Denom)
if !f {
supplyFactor = sdk.OneDec()
}
borrowFactor, f := k.GetBorrowInterestFactor(ctx, mm.Denom)
if !f {
borrowFactor = sdk.OneDec()
}
previousAccrualTime, f := k.GetPreviousAccrualTime(ctx, mm.Denom)
if !f {
// Goverance adds new params at end of block, but mm's previous accrual time is set in begin blocker.
// If a new money market is added and chain is exported before begin blocker runs, then the previous
// accrual time will not be found. We can't set it here because our ctx doesn't contain current block
// time; if we set it to ctx.BlockTime() then on the next block it could accrue interest from Jan 1st
// 0001 to now. To avoid setting up a bad state, we panic.
panic(fmt.Sprintf("expected previous accrual time to be set in state for %s", mm.Denom))
}
gat := types.NewGenesisAccumulationTime(mm.Denom, previousAccrualTime, supplyFactor, borrowFactor)
gats = append(gats, gat)
}
return types.NewGenesisState(
params, gats, deposits, borrows,
totalSupplied, totalBorrowed, totalReserves,
)
}