135 lines
4.4 KiB
Go
135 lines
4.4 KiB
Go
package slashing
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import (
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"fmt"
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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/x/params"
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)
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// Default parameter namespace
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const (
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DefaultParamspace = ModuleName
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DefaultMaxEvidenceAge time.Duration = 60 * 2 * time.Second
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DefaultSignedBlocksWindow int64 = 100
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DefaultDowntimeJailDuration time.Duration = 60 * 10 * time.Second
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)
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// The Double Sign Jail period ends at Max Time supported by Amino (Dec 31, 9999 - 23:59:59 GMT)
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var (
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DoubleSignJailEndTime = time.Unix(253402300799, 0)
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DefaultMinSignedPerWindow = sdk.NewDecWithPrec(5, 1)
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DefaultSlashFractionDoubleSign = sdk.NewDec(1).Quo(sdk.NewDec(20))
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DefaultSlashFractionDowntime = sdk.NewDec(1).Quo(sdk.NewDec(100))
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)
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// Parameter store keys
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var (
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KeyMaxEvidenceAge = []byte("MaxEvidenceAge")
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KeySignedBlocksWindow = []byte("SignedBlocksWindow")
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KeyMinSignedPerWindow = []byte("MinSignedPerWindow")
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KeyDowntimeJailDuration = []byte("DowntimeJailDuration")
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KeySlashFractionDoubleSign = []byte("SlashFractionDoubleSign")
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KeySlashFractionDowntime = []byte("SlashFractionDowntime")
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)
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// ParamKeyTable for slashing module
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func ParamKeyTable() params.KeyTable {
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return params.NewKeyTable().RegisterParamSet(&Params{})
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}
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// Params - used for initializing default parameter for slashing at genesis
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type Params struct {
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MaxEvidenceAge time.Duration `json:"max_evidence_age"`
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SignedBlocksWindow int64 `json:"signed_blocks_window"`
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MinSignedPerWindow sdk.Dec `json:"min_signed_per_window"`
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DowntimeJailDuration time.Duration `json:"downtime_jail_duration"`
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SlashFractionDoubleSign sdk.Dec `json:"slash_fraction_double_sign"`
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SlashFractionDowntime sdk.Dec `json:"slash_fraction_downtime"`
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}
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func (p Params) String() string {
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return fmt.Sprintf(`Slashing Params:
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MaxEvidenceAge: %s
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SignedBlocksWindow: %d
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MinSignedPerWindow: %s
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DowntimeJailDuration: %s
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SlashFractionDoubleSign: %d
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SlashFractionDowntime: %d`, p.MaxEvidenceAge,
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p.SignedBlocksWindow, p.MinSignedPerWindow,
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p.DowntimeJailDuration, p.SlashFractionDoubleSign,
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p.SlashFractionDowntime)
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}
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// Implements params.ParamSet
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func (p *Params) ParamSetPairs() params.ParamSetPairs {
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return params.ParamSetPairs{
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{KeyMaxEvidenceAge, &p.MaxEvidenceAge},
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{KeySignedBlocksWindow, &p.SignedBlocksWindow},
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{KeyMinSignedPerWindow, &p.MinSignedPerWindow},
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{KeyDowntimeJailDuration, &p.DowntimeJailDuration},
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{KeySlashFractionDoubleSign, &p.SlashFractionDoubleSign},
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{KeySlashFractionDowntime, &p.SlashFractionDowntime},
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}
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}
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// Default parameters for this module
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func DefaultParams() Params {
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return Params{
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MaxEvidenceAge: DefaultMaxEvidenceAge,
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SignedBlocksWindow: DefaultSignedBlocksWindow,
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MinSignedPerWindow: DefaultMinSignedPerWindow,
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DowntimeJailDuration: DefaultDowntimeJailDuration,
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SlashFractionDoubleSign: DefaultSlashFractionDoubleSign,
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SlashFractionDowntime: DefaultSlashFractionDowntime,
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}
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}
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// MaxEvidenceAge - max age for evidence
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func (k Keeper) MaxEvidenceAge(ctx sdk.Context) (res time.Duration) {
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k.paramspace.Get(ctx, KeyMaxEvidenceAge, &res)
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return
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}
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// SignedBlocksWindow - sliding window for downtime slashing
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func (k Keeper) SignedBlocksWindow(ctx sdk.Context) (res int64) {
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k.paramspace.Get(ctx, KeySignedBlocksWindow, &res)
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return
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}
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// Downtime slashing threshold
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func (k Keeper) MinSignedPerWindow(ctx sdk.Context) int64 {
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var minSignedPerWindow sdk.Dec
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k.paramspace.Get(ctx, KeyMinSignedPerWindow, &minSignedPerWindow)
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signedBlocksWindow := k.SignedBlocksWindow(ctx)
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// NOTE: RoundInt64 will never panic as minSignedPerWindow is
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// less than 1.
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return minSignedPerWindow.MulInt64(signedBlocksWindow).RoundInt64()
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}
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// Downtime unbond duration
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func (k Keeper) DowntimeJailDuration(ctx sdk.Context) (res time.Duration) {
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k.paramspace.Get(ctx, KeyDowntimeJailDuration, &res)
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return
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}
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// SlashFractionDoubleSign
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func (k Keeper) SlashFractionDoubleSign(ctx sdk.Context) (res sdk.Dec) {
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k.paramspace.Get(ctx, KeySlashFractionDoubleSign, &res)
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return
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}
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// SlashFractionDowntime
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func (k Keeper) SlashFractionDowntime(ctx sdk.Context) (res sdk.Dec) {
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k.paramspace.Get(ctx, KeySlashFractionDowntime, &res)
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return
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}
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// GetParams returns the total set of slashing parameters.
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func (k Keeper) GetParams(ctx sdk.Context) (params Params) {
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k.paramspace.GetParamSet(ctx, ¶ms)
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return params
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}
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