0g-chain/x/harvest/keeper/keeper.go
Denali Marsh 510b7e7c04
Harvest: borrows limited by global asset borrow limit (#715)
* update MaximumLimit param to MaximumLimitUSD

* track total borrowed coins in the store

* implement total borrowed coins querier

* add maximum value usd check

* update test suite, add zero coins check

* add test case, update error msg

* max limit in native amount

* remove debug logging

* prepare for master rebase

* master rebase

* fix build
2020-11-12 16:50:54 +01:00

259 lines
9.8 KiB
Go

package keeper
import (
"time"
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/params/subspace"
"github.com/kava-labs/kava/x/harvest/types"
)
// Keeper keeper for the harvest module
type Keeper struct {
key sdk.StoreKey
cdc *codec.Codec
paramSubspace subspace.Subspace
accountKeeper types.AccountKeeper
supplyKeeper types.SupplyKeeper
stakingKeeper types.StakingKeeper
pricefeedKeeper types.PricefeedKeeper
}
// NewKeeper creates a new keeper
func NewKeeper(cdc *codec.Codec, key sdk.StoreKey, paramstore subspace.Subspace,
ak types.AccountKeeper, sk types.SupplyKeeper, stk types.StakingKeeper,
pfk types.PricefeedKeeper) Keeper {
if !paramstore.HasKeyTable() {
paramstore = paramstore.WithKeyTable(types.ParamKeyTable())
}
return Keeper{
key: key,
cdc: cdc,
paramSubspace: paramstore,
accountKeeper: ak,
supplyKeeper: sk,
stakingKeeper: stk,
pricefeedKeeper: pfk,
}
}
// GetPreviousBlockTime get the blocktime for the previous block
func (k Keeper) GetPreviousBlockTime(ctx sdk.Context) (blockTime time.Time, found bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PreviousBlockTimeKey)
b := store.Get([]byte{})
if b == nil {
return time.Time{}, false
}
k.cdc.MustUnmarshalBinaryBare(b, &blockTime)
return blockTime, true
}
// SetPreviousBlockTime set the time of the previous block
func (k Keeper) SetPreviousBlockTime(ctx sdk.Context, blockTime time.Time) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PreviousBlockTimeKey)
store.Set([]byte{}, k.cdc.MustMarshalBinaryBare(blockTime))
}
// GetPreviousDelegatorDistribution get the time of the previous delegator distribution
func (k Keeper) GetPreviousDelegatorDistribution(ctx sdk.Context, denom string) (distTime time.Time, found bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PreviousDelegationDistributionKey)
bz := store.Get([]byte(denom))
if bz == nil {
return time.Time{}, false
}
k.cdc.MustUnmarshalBinaryBare(bz, &distTime)
return distTime, true
}
// SetPreviousDelegationDistribution set the time of the previous delegator distribution
func (k Keeper) SetPreviousDelegationDistribution(ctx sdk.Context, distTime time.Time, denom string) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PreviousDelegationDistributionKey)
store.Set([]byte(denom), k.cdc.MustMarshalBinaryBare(distTime))
}
// GetDeposit returns a deposit from the store for a particular depositor address, deposit denom, and deposit type
func (k Keeper) GetDeposit(ctx sdk.Context, depositor sdk.AccAddress, denom string, depositType types.DepositType) (types.Deposit, bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositsKeyPrefix)
bz := store.Get(types.DepositKey(depositType, denom, depositor))
if bz == nil {
return types.Deposit{}, false
}
var deposit types.Deposit
k.cdc.MustUnmarshalBinaryBare(bz, &deposit)
return deposit, true
}
// SetDeposit sets the input deposit in the store, prefixed by the deposit type, deposit denom, and depositor address, in that order
func (k Keeper) SetDeposit(ctx sdk.Context, deposit types.Deposit) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositsKeyPrefix)
bz := k.cdc.MustMarshalBinaryBare(deposit)
store.Set(types.DepositKey(deposit.Type, deposit.Amount.Denom, deposit.Depositor), bz)
}
// DeleteDeposit deletes a deposit from the store
func (k Keeper) DeleteDeposit(ctx sdk.Context, deposit types.Deposit) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositsKeyPrefix)
store.Delete(types.DepositKey(deposit.Type, deposit.Amount.Denom, deposit.Depositor))
}
// IterateDeposits iterates over all deposit objects in the store and performs a callback function
func (k Keeper) IterateDeposits(ctx sdk.Context, cb func(deposit types.Deposit) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositsKeyPrefix)
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var deposit types.Deposit
k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &deposit)
if cb(deposit) {
break
}
}
}
// IterateDepositsByTypeAndDenom iterates over all deposit objects in the store with the matching deposit type and deposit denom and performs a callback function
func (k Keeper) IterateDepositsByTypeAndDenom(ctx sdk.Context, depositType types.DepositType, depositDenom string, cb func(deposit types.Deposit) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositsKeyPrefix)
iterator := sdk.KVStorePrefixIterator(store, types.DepositTypeIteratorKey(depositType, depositDenom))
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var deposit types.Deposit
k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &deposit)
if cb(deposit) {
break
}
}
}
// GetClaim returns a claim from the store for a particular claim owner, deposit denom, and deposit type
func (k Keeper) GetClaim(ctx sdk.Context, owner sdk.AccAddress, depositDenom string, depositType types.DepositType) (types.Claim, bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.ClaimsKeyPrefix)
bz := store.Get(types.ClaimKey(depositType, depositDenom, owner))
if bz == nil {
return types.Claim{}, false
}
var claim types.Claim
k.cdc.MustUnmarshalBinaryBare(bz, &claim)
return claim, true
}
// SetClaim stores the input claim in the store, prefixed by the deposit type, deposit denom, and owner address, in that order
func (k Keeper) SetClaim(ctx sdk.Context, claim types.Claim) {
store := prefix.NewStore(ctx.KVStore(k.key), types.ClaimsKeyPrefix)
bz := k.cdc.MustMarshalBinaryBare(claim)
store.Set(types.ClaimKey(claim.Type, claim.DepositDenom, claim.Owner), bz)
}
// DeleteClaim deletes a claim from the store
func (k Keeper) DeleteClaim(ctx sdk.Context, claim types.Claim) {
store := prefix.NewStore(ctx.KVStore(k.key), types.ClaimsKeyPrefix)
store.Delete(types.ClaimKey(claim.Type, claim.DepositDenom, claim.Owner))
}
// IterateClaims iterates over all claim objects in the store and performs a callback function
func (k Keeper) IterateClaims(ctx sdk.Context, cb func(claim types.Claim) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.ClaimsKeyPrefix)
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var claim types.Claim
k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &claim)
if cb(claim) {
break
}
}
}
// IterateClaimsByTypeAndDenom iterates over all claim objects in the store with the matching deposit type and deposit denom and performs a callback function
func (k Keeper) IterateClaimsByTypeAndDenom(ctx sdk.Context, depositType types.DepositType, depositDenom string, cb func(claim types.Claim) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.ClaimsKeyPrefix)
iterator := sdk.KVStorePrefixIterator(store, types.DepositTypeIteratorKey(depositType, depositDenom))
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var claim types.Claim
k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &claim)
if cb(claim) {
break
}
}
}
// GetDepositsByUser gets all deposits for an individual user
func (k Keeper) GetDepositsByUser(ctx sdk.Context, user sdk.AccAddress) []types.Deposit {
var deposits []types.Deposit
k.IterateDeposits(ctx, func(deposit types.Deposit) (stop bool) {
if deposit.Depositor.Equals(user) {
deposits = append(deposits, deposit)
}
return false
})
return deposits
}
// BondDenom returns the bond denom from the staking keeper
func (k Keeper) BondDenom(ctx sdk.Context) string {
return k.stakingKeeper.BondDenom(ctx)
}
// GetBorrow returns a Borrow from the store for a particular borrower address and borrow denom
func (k Keeper) GetBorrow(ctx sdk.Context, borrower sdk.AccAddress) (types.Borrow, bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.BorrowsKeyPrefix)
bz := store.Get(borrower)
if bz == nil {
return types.Borrow{}, false
}
var borrow types.Borrow
k.cdc.MustUnmarshalBinaryBare(bz, &borrow)
return borrow, true
}
// SetBorrow sets the input borrow in the store, prefixed by the borrower address and borrow denom
func (k Keeper) SetBorrow(ctx sdk.Context, borrow types.Borrow) {
store := prefix.NewStore(ctx.KVStore(k.key), types.BorrowsKeyPrefix)
bz := k.cdc.MustMarshalBinaryBare(borrow)
store.Set(borrow.Borrower, bz)
}
// DeleteBorrow deletes a borrow from the store
func (k Keeper) DeleteBorrow(ctx sdk.Context, borrow types.Borrow) {
store := prefix.NewStore(ctx.KVStore(k.key), types.BorrowsKeyPrefix)
store.Delete(borrow.Borrower)
}
// IterateBorrows iterates over all borrow objects in the store and performs a callback function
func (k Keeper) IterateBorrows(ctx sdk.Context, cb func(borrow types.Borrow) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.BorrowsKeyPrefix)
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var borrow types.Borrow
k.cdc.MustUnmarshalBinaryBare(iterator.Value(), &borrow)
if cb(borrow) {
break
}
}
}
// SetBorrowedCoins sets the total amount of coins currently borrowed in the store
func (k Keeper) SetBorrowedCoins(ctx sdk.Context, borrowedCoins sdk.Coins) {
store := prefix.NewStore(ctx.KVStore(k.key), types.BorrowedCoinsPrefix)
bz := k.cdc.MustMarshalBinaryBare(borrowedCoins)
store.Set([]byte{}, bz)
}
// GetBorrowedCoins returns an sdk.Coins object from the store representing all currently borrowed coins
func (k Keeper) GetBorrowedCoins(ctx sdk.Context) (sdk.Coins, bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.BorrowedCoinsPrefix)
bz := store.Get([]byte{})
if bz == nil {
return sdk.Coins{}, false
}
var borrowedCoins sdk.Coins
k.cdc.MustUnmarshalBinaryBare(bz, &borrowedCoins)
return borrowedCoins, true
}