0g-chain/x/swap/simulation/genesis.go
Kevin Davis 290cb61882
feat: backport swap sims for deposit, withdraw (#965)
* sims: MsgDeposit operation

* implement withdraw

* update comment

* fix: add interest factors to cdp sims

Co-authored-by: denalimarsh <denalimarsh@gmail.com>
2021-07-15 10:35:24 -05:00

101 lines
2.6 KiB
Go

package simulation
import (
"fmt"
"math/rand"
"sort"
"strings"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/module"
"github.com/cosmos/cosmos-sdk/x/simulation"
"github.com/kava-labs/kava/x/swap/types"
)
var (
//nolint
accs []simulation.Account
consistentPools = [2][2]string{{"ukava", "usdx"}, {"bnb", "stake"}}
)
// GenSwapFee generates a random SwapFee in range [0.01, 1.00]
func GenSwapFee(r *rand.Rand) sdk.Dec {
min := int(1)
max := int(100)
percentage := int64(r.Intn(int(max)-min) + min)
return sdk.NewDec(percentage).Quo(sdk.NewDec(100))
}
// GenAllowedPools generates random allowed pools
func GenAllowedPools(r *rand.Rand) types.AllowedPools {
var pools types.AllowedPools
// Generate a set [1, 10] of random pools
numRandPools := (r.Intn(10) + 1)
for i := 0; i < numRandPools; i++ {
tokenA, tokenB := genTokenDenoms(r)
for strings.Compare(tokenA, tokenB) == 0 {
tokenA, tokenB = genTokenDenoms(r)
}
newPool := types.NewAllowedPool(tokenA, tokenB)
pools = append(pools, newPool)
}
// Append consistent pools
for i := 0; i < len(consistentPools); i++ {
tokenA := consistentPools[i][0]
tokenB := consistentPools[i][1]
newPool := types.NewAllowedPool(tokenA, tokenB)
pools = append(pools, newPool)
}
return pools
}
func genTokenDenoms(r *rand.Rand) (string, string) {
tokenA := genTokenDenom(r)
tokenB := genTokenDenom(r)
for strings.Compare(tokenA, tokenB) == 0 {
tokenA = genTokenDenom(r)
}
tokens := []string{tokenA, tokenB}
sort.Strings(tokens)
return tokens[0], tokens[1]
}
func genTokenDenom(r *rand.Rand) string {
denom := strings.ToLower(simulation.RandStringOfLength(r, 3))
for err := sdk.ValidateDenom(denom); err != nil; {
denom = strings.ToLower(simulation.RandStringOfLength(r, 3))
}
return denom
}
// RandomizedGenState generates a random GenesisState
func RandomizedGenState(simState *module.SimulationState) {
accs = simState.Accounts
swapGenesis := loadRandomSwapGenState(simState)
fmt.Printf("Selected randomly generated %s parameters:\n%s\n", types.ModuleName, codec.MustMarshalJSONIndent(simState.Cdc, swapGenesis))
simState.GenState[types.ModuleName] = simState.Cdc.MustMarshalJSON(swapGenesis)
}
func loadRandomSwapGenState(simState *module.SimulationState) types.GenesisState {
pools := GenAllowedPools(simState.Rand)
swapFee := GenSwapFee(simState.Rand)
swapGenesis := types.GenesisState{
Params: types.Params{
AllowedPools: pools,
SwapFee: swapFee,
},
}
if err := swapGenesis.Validate(); err != nil {
panic(err)
}
return swapGenesis
}