github.com/Finschia/finschia-sdk@v0.48.1/x/slashing/simulation/genesis.go (about)

     1  package simulation
     2  
     3  // DONTCOVER
     4  
     5  import (
     6  	"encoding/json"
     7  	"fmt"
     8  	"math/rand"
     9  	"time"
    10  
    11  	sdk "github.com/Finschia/finschia-sdk/types"
    12  	"github.com/Finschia/finschia-sdk/types/module"
    13  	"github.com/Finschia/finschia-sdk/types/simulation"
    14  	"github.com/Finschia/finschia-sdk/x/slashing/types"
    15  )
    16  
    17  // Simulation parameter constants
    18  const (
    19  	SignedBlocksWindow      = "signed_blocks_window"
    20  	MinSignedPerWindow      = "min_signed_per_window"
    21  	DowntimeJailDuration    = "downtime_jail_duration"
    22  	SlashFractionDoubleSign = "slash_fraction_double_sign"
    23  	SlashFractionDowntime   = "slash_fraction_downtime"
    24  )
    25  
    26  // GenSignedBlocksWindow randomized SignedBlocksWindow
    27  func GenSignedBlocksWindow(r *rand.Rand) int64 {
    28  	return int64(simulation.RandIntBetween(r, 10, 1000))
    29  }
    30  
    31  // GenMinSignedPerWindow randomized MinSignedPerWindow
    32  func GenMinSignedPerWindow(r *rand.Rand) sdk.Dec {
    33  	return sdk.NewDecWithPrec(int64(r.Intn(10)), 1)
    34  }
    35  
    36  // GenDowntimeJailDuration randomized DowntimeJailDuration
    37  func GenDowntimeJailDuration(r *rand.Rand) time.Duration {
    38  	return time.Duration(simulation.RandIntBetween(r, 60, 60*60*24)) * time.Second
    39  }
    40  
    41  // GenSlashFractionDoubleSign randomized SlashFractionDoubleSign
    42  func GenSlashFractionDoubleSign(r *rand.Rand) sdk.Dec {
    43  	return sdk.NewDec(1).Quo(sdk.NewDec(int64(r.Intn(50) + 1)))
    44  }
    45  
    46  // GenSlashFractionDowntime randomized SlashFractionDowntime
    47  func GenSlashFractionDowntime(r *rand.Rand) sdk.Dec {
    48  	return sdk.NewDec(1).Quo(sdk.NewDec(int64(r.Intn(200) + 1)))
    49  }
    50  
    51  // RandomizedGenState generates a random GenesisState for slashing
    52  func RandomizedGenState(simState *module.SimulationState) {
    53  	var signedBlocksWindow int64
    54  	simState.AppParams.GetOrGenerate(
    55  		simState.Cdc, SignedBlocksWindow, &signedBlocksWindow, simState.Rand,
    56  		func(r *rand.Rand) { signedBlocksWindow = GenSignedBlocksWindow(r) },
    57  	)
    58  
    59  	var minSignedPerWindow sdk.Dec
    60  	simState.AppParams.GetOrGenerate(
    61  		simState.Cdc, MinSignedPerWindow, &minSignedPerWindow, simState.Rand,
    62  		func(r *rand.Rand) { minSignedPerWindow = GenMinSignedPerWindow(r) },
    63  	)
    64  
    65  	var downtimeJailDuration time.Duration
    66  	simState.AppParams.GetOrGenerate(
    67  		simState.Cdc, DowntimeJailDuration, &downtimeJailDuration, simState.Rand,
    68  		func(r *rand.Rand) { downtimeJailDuration = GenDowntimeJailDuration(r) },
    69  	)
    70  
    71  	var slashFractionDoubleSign sdk.Dec
    72  	simState.AppParams.GetOrGenerate(
    73  		simState.Cdc, SlashFractionDoubleSign, &slashFractionDoubleSign, simState.Rand,
    74  		func(r *rand.Rand) { slashFractionDoubleSign = GenSlashFractionDoubleSign(r) },
    75  	)
    76  
    77  	var slashFractionDowntime sdk.Dec
    78  	simState.AppParams.GetOrGenerate(
    79  		simState.Cdc, SlashFractionDowntime, &slashFractionDowntime, simState.Rand,
    80  		func(r *rand.Rand) { slashFractionDowntime = GenSlashFractionDowntime(r) },
    81  	)
    82  
    83  	params := types.NewParams(
    84  		signedBlocksWindow, minSignedPerWindow, downtimeJailDuration,
    85  		slashFractionDoubleSign, slashFractionDowntime,
    86  	)
    87  
    88  	slashingGenesis := types.NewGenesisState(params, []types.SigningInfo{}, []types.ValidatorMissedBlocks{})
    89  
    90  	bz, err := json.MarshalIndent(&slashingGenesis, "", " ")
    91  	if err != nil {
    92  		panic(err)
    93  	}
    94  	fmt.Printf("Selected randomly generated slashing parameters:\n%s\n", bz)
    95  	simState.GenState[types.ModuleName] = simState.Cdc.MustMarshalJSON(slashingGenesis)
    96  }