83 lines
2.4 KiB
Go
83 lines
2.4 KiB
Go
package simulation
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import (
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"fmt"
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"math/rand"
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"time"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/types/module"
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simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
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"github.com/cosmos/cosmos-sdk/x/feegrant/types"
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)
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// Simulation parameter constants
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const feegrant = "feegrant"
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// genFeeGrants returns a slice of randomly generated allowances.
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func genFeeGrants(r *rand.Rand, accounts []simtypes.Account) []types.FeeAllowanceGrant {
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allowances := make([]types.FeeAllowanceGrant, len(accounts)-1)
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for i := 0; i < len(accounts)-1; i++ {
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granter := accounts[i].Address
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grantee := accounts[i+1].Address
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allowances[i] = generateRandomAllowances(granter, grantee, r)
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}
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return allowances
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}
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func generateRandomAllowances(granter, grantee sdk.AccAddress, r *rand.Rand) types.FeeAllowanceGrant {
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allowances := make([]types.FeeAllowanceGrant, 3)
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spendLimit := sdk.NewCoins(sdk.NewCoin("stake", sdk.NewInt(100)))
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periodSpendLimit := sdk.NewCoins(sdk.NewCoin("stake", sdk.NewInt(10)))
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basic := types.BasicFeeAllowance{
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SpendLimit: spendLimit,
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}
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basicAllowance, err := types.NewFeeAllowanceGrant(granter, grantee, &basic)
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if err != nil {
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panic(err)
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}
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allowances[0] = basicAllowance
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periodicAllowance, err := types.NewFeeAllowanceGrant(granter, grantee, &types.PeriodicFeeAllowance{
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Basic: basic,
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PeriodSpendLimit: periodSpendLimit,
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Period: types.ClockDuration(time.Hour),
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})
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if err != nil {
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panic(err)
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}
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allowances[1] = periodicAllowance
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filteredAllowance, err := types.NewFeeAllowanceGrant(granter, grantee, &types.AllowedMsgFeeAllowance{
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Allowance: basicAllowance.GetAllowance(),
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AllowedMessages: []string{"/cosmos.gov.v1beta1.MsgSubmitProposal"},
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})
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if err != nil {
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panic(err)
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}
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allowances[2] = filteredAllowance
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return allowances[r.Intn(len(allowances))]
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}
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// RandomizedGenState generates a random GenesisState for feegrant
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func RandomizedGenState(simState *module.SimulationState) {
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var feegrants []types.FeeAllowanceGrant
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simState.AppParams.GetOrGenerate(
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simState.Cdc, feegrant, &feegrants, simState.Rand,
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func(r *rand.Rand) { feegrants = genFeeGrants(r, simState.Accounts) },
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)
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feegrantGenesis := types.NewGenesisState(feegrants)
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bz, err := simState.Cdc.MarshalJSON(feegrantGenesis)
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if err != nil {
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panic(err)
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}
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fmt.Printf("Selected randomly generated %s parameters:\n%s\n", types.ModuleName, bz)
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simState.GenState[types.ModuleName] = bz
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}
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