0g-chain/x/swap/keeper/keeper.go
Denali Marsh 0714d6120e
Certik audit revisions (#999)
* revisions: BAS-01 | Inconsistent Comment

* revisions: GEE-01 | Unsorted imports

* revisions: KEE-01 | Ambiguous Function Naming

* revisions: OPE-01 | Redundant “if” Clause
2021-08-18 06:51:09 -06:00

252 lines
8.1 KiB
Go

package keeper
import (
"fmt"
"github.com/kava-labs/kava/x/swap/types"
"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"
)
// Keeper keeper for the swap module
type Keeper struct {
key sdk.StoreKey
cdc *codec.Codec
paramSubspace subspace.Subspace
hooks types.SwapHooks
accountKeeper types.AccountKeeper
supplyKeeper types.SupplyKeeper
}
// NewKeeper creates a new keeper
func NewKeeper(
cdc *codec.Codec,
key sdk.StoreKey,
paramstore subspace.Subspace,
accountKeeper types.AccountKeeper,
supplyKeeper types.SupplyKeeper,
) Keeper {
if !paramstore.HasKeyTable() {
paramstore = paramstore.WithKeyTable(types.ParamKeyTable())
}
return Keeper{
key: key,
cdc: cdc,
paramSubspace: paramstore,
accountKeeper: accountKeeper,
supplyKeeper: supplyKeeper,
}
}
// SetHooks adds hooks to the keeper.
func (k *Keeper) SetHooks(sh types.SwapHooks) *Keeper {
if k.hooks != nil {
panic("cannot set swap hooks twice")
}
k.hooks = sh
return k
}
// ClearHooks clears the hooks on the keeper
func (k *Keeper) ClearHooks() {
k.hooks = nil
}
// GetParams returns the params from the store
func (k Keeper) GetParams(ctx sdk.Context) types.Params {
var p types.Params
k.paramSubspace.GetParamSet(ctx, &p)
return p
}
// SetParams sets params on the store
func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
k.paramSubspace.SetParamSet(ctx, &params)
}
// GetSwapFee returns the swap fee set in the module parameters
func (k Keeper) GetSwapFee(ctx sdk.Context) sdk.Dec {
return k.GetParams(ctx).SwapFee
}
// GetPool retrieves a pool record from the store
func (k Keeper) GetPool(ctx sdk.Context, poolID string) (types.PoolRecord, bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PoolKeyPrefix)
bz := store.Get(types.PoolKey(poolID))
if bz == nil {
return types.PoolRecord{}, false
}
var record types.PoolRecord
k.cdc.MustUnmarshalBinaryLengthPrefixed(bz, &record)
return record, true
}
// SetPool_Raw saves a pool record to the store without any validation
func (k Keeper) SetPool_Raw(ctx sdk.Context, record types.PoolRecord) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PoolKeyPrefix)
bz := k.cdc.MustMarshalBinaryLengthPrefixed(record)
store.Set(types.PoolKey(record.PoolID), bz)
}
// SetPool saves a pool to the store and panics if the record is invalid
func (k Keeper) SetPool(ctx sdk.Context, record types.PoolRecord) {
if err := record.Validate(); err != nil {
panic(fmt.Sprintf("invalid pool record: %s", err))
}
k.SetPool_Raw(ctx, record)
}
// DeletePool deletes a pool record from the store
func (k Keeper) DeletePool(ctx sdk.Context, poolID string) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PoolKeyPrefix)
store.Delete(types.PoolKey(poolID))
}
// IteratePools iterates over all pool objects in the store and performs a callback function
func (k Keeper) IteratePools(ctx sdk.Context, cb func(record types.PoolRecord) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.PoolKeyPrefix)
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var record types.PoolRecord
k.cdc.MustUnmarshalBinaryLengthPrefixed(iterator.Value(), &record)
if cb(record) {
break
}
}
}
// GetAllPools returns all pool records from the store
func (k Keeper) GetAllPools(ctx sdk.Context) (records types.PoolRecords) {
k.IteratePools(ctx, func(record types.PoolRecord) bool {
records = append(records, record)
return false
})
return
}
// GetPoolShares gets the total shares in a pool from the store
func (k Keeper) GetPoolShares(ctx sdk.Context, poolID string) (sdk.Int, bool) {
pool, found := k.GetPool(ctx, poolID)
if !found {
return sdk.Int{}, false
}
return pool.TotalShares, true
}
// GetDepositorShares gets a share record from the store
func (k Keeper) GetDepositorShares(ctx sdk.Context, depositor sdk.AccAddress, poolID string) (types.ShareRecord, bool) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositorPoolSharesPrefix)
bz := store.Get(types.DepositorPoolSharesKey(depositor, poolID))
if bz == nil {
return types.ShareRecord{}, false
}
var record types.ShareRecord
k.cdc.MustUnmarshalBinaryLengthPrefixed(bz, &record)
return record, true
}
// SetDepositorShares_Raw saves a share record to the store without validation
func (k Keeper) SetDepositorShares_Raw(ctx sdk.Context, record types.ShareRecord) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositorPoolSharesPrefix)
bz := k.cdc.MustMarshalBinaryLengthPrefixed(record)
store.Set(types.DepositorPoolSharesKey(record.Depositor, record.PoolID), bz)
}
// SetDepositorShares saves a share record to the store and panics if the record is invalid
func (k Keeper) SetDepositorShares(ctx sdk.Context, record types.ShareRecord) {
if err := record.Validate(); err != nil {
panic(fmt.Sprintf("invalid share record: %s", err))
}
k.SetDepositorShares_Raw(ctx, record)
}
// DeleteDepositorShares deletes a share record from the store
func (k Keeper) DeleteDepositorShares(ctx sdk.Context, depositor sdk.AccAddress, poolID string) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositorPoolSharesPrefix)
store.Delete(types.DepositorPoolSharesKey(depositor, poolID))
}
// IterateDepositorShares iterates over all pool objects in the store and performs a callback function
func (k Keeper) IterateDepositorShares(ctx sdk.Context, cb func(record types.ShareRecord) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositorPoolSharesPrefix)
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var record types.ShareRecord
k.cdc.MustUnmarshalBinaryLengthPrefixed(iterator.Value(), &record)
if cb(record) {
break
}
}
}
// GetAllDepositorShares returns all depositor share records from the store
func (k Keeper) GetAllDepositorShares(ctx sdk.Context) (records types.ShareRecords) {
k.IterateDepositorShares(ctx, func(record types.ShareRecord) bool {
records = append(records, record)
return false
})
return
}
// IterateDepositorSharesByOwner iterates over share records for a specific address and performs a callback function
func (k Keeper) IterateDepositorSharesByOwner(ctx sdk.Context, owner sdk.AccAddress, cb func(record types.ShareRecord) (stop bool)) {
store := prefix.NewStore(ctx.KVStore(k.key), types.DepositorPoolSharesPrefix)
iterator := sdk.KVStorePrefixIterator(store, owner.Bytes())
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var record types.ShareRecord
k.cdc.MustUnmarshalBinaryLengthPrefixed(iterator.Value(), &record)
if cb(record) {
break
}
}
}
// GetAllDepositorSharesByOwner returns all depositor share records from the store for a specific address
func (k Keeper) GetAllDepositorSharesByOwner(ctx sdk.Context, owner sdk.AccAddress) (records types.ShareRecords) {
k.IterateDepositorSharesByOwner(ctx, owner, func(record types.ShareRecord) bool {
records = append(records, record)
return false
})
return
}
// GetDepositorSharesAmount gets a depositor's shares in a pool from the store
func (k Keeper) GetDepositorSharesAmount(ctx sdk.Context, depositor sdk.AccAddress, poolID string) (sdk.Int, bool) {
record, found := k.GetDepositorShares(ctx, depositor, poolID)
if !found {
return sdk.Int{}, false
}
return record.SharesOwned, true
}
// updatePool updates a pool, deleting the pool record if the shares are zero
func (k Keeper) updatePool(ctx sdk.Context, poolID string, pool *types.DenominatedPool) {
if pool.TotalShares().IsZero() {
k.DeletePool(ctx, poolID)
} else {
k.SetPool(ctx, types.NewPoolRecordFromPool(pool))
}
}
// updateDepositorShares updates a depositor share records for a pool, deleting the record if the new shares are zero
func (k Keeper) updateDepositorShares(ctx sdk.Context, owner sdk.AccAddress, poolID string, shares sdk.Int) {
if shares.IsZero() {
k.DeleteDepositorShares(ctx, owner, poolID)
} else {
shareRecord := types.NewShareRecord(owner, poolID, shares)
k.SetDepositorShares(ctx, shareRecord)
}
}