110 lines
3.2 KiB
Go
110 lines
3.2 KiB
Go
package simulation
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// DONTCOVER
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import (
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"encoding/json"
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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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"github.com/cosmos/cosmos-sdk/types/simulation"
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"github.com/cosmos/cosmos-sdk/x/staking/types"
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)
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// Simulation parameter constants
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const (
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unbondingTime = "unbonding_time"
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maxValidators = "max_validators"
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historicalEntries = "historical_entries"
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)
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// GenUnbondingTime randomized UnbondingTime
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func GenUnbondingTime(r *rand.Rand) (ubdTime time.Duration) {
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return time.Duration(simulation.RandIntBetween(r, 60, 60*60*24*3*2)) * time.Second
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}
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// GenMaxValidators randomized MaxValidators
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func GenMaxValidators(r *rand.Rand) (maxValidators uint32) {
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return uint32(r.Intn(250) + 1)
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}
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// GetHistEntries randomized HistoricalEntries between 0-100.
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func GetHistEntries(r *rand.Rand) uint32 {
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return uint32(r.Intn(int(types.DefaultHistoricalEntries + 1)))
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}
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// RandomizedGenState generates a random GenesisState for staking
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func RandomizedGenState(simState *module.SimulationState) {
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// params
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var (
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unbondTime time.Duration
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maxVals uint32
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histEntries uint32
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)
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simState.AppParams.GetOrGenerate(
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simState.Cdc, unbondingTime, &unbondTime, simState.Rand,
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func(r *rand.Rand) { unbondTime = GenUnbondingTime(r) },
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)
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simState.AppParams.GetOrGenerate(
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simState.Cdc, maxValidators, &maxVals, simState.Rand,
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func(r *rand.Rand) { maxVals = GenMaxValidators(r) },
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)
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simState.AppParams.GetOrGenerate(
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simState.Cdc, historicalEntries, &histEntries, simState.Rand,
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func(r *rand.Rand) { histEntries = GetHistEntries(r) },
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)
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// NOTE: the slashing module need to be defined after the staking module on the
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// NewSimulationManager constructor for this to work
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simState.UnbondTime = unbondTime
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params := types.NewParams(simState.UnbondTime, maxVals, 7, histEntries, sdk.DefaultBondDenom)
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// validators & delegations
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var (
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validators []types.Validator
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delegations []types.Delegation
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)
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valAddrs := make([]sdk.ValAddress, simState.NumBonded)
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for i := 0; i < int(simState.NumBonded); i++ {
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valAddr := sdk.ValAddress(simState.Accounts[i].Address)
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valAddrs[i] = valAddr
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maxCommission := sdk.NewDecWithPrec(int64(simulation.RandIntBetween(simState.Rand, 1, 100)), 2)
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commission := types.NewCommission(
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simulation.RandomDecAmount(simState.Rand, maxCommission),
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maxCommission,
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simulation.RandomDecAmount(simState.Rand, maxCommission),
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)
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validator, err := types.NewValidator(valAddr, simState.Accounts[i].ConsKey.PubKey(), types.Description{})
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if err != nil {
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panic(err)
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}
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validator.Tokens = sdk.NewInt(simState.InitialStake)
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validator.DelegatorShares = sdk.NewDec(simState.InitialStake)
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validator.Commission = commission
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delegation := types.NewDelegation(simState.Accounts[i].Address, valAddr, sdk.NewDec(simState.InitialStake))
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validators = append(validators, validator)
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delegations = append(delegations, delegation)
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}
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stakingGenesis := types.NewGenesisState(params, validators, delegations)
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bz, err := json.MarshalIndent(&stakingGenesis.Params, "", " ")
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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 staking parameters:\n%s\n", bz)
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simState.GenState[types.ModuleName] = simState.Cdc.MustMarshalJSON(stakingGenesis)
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}
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