134 lines
4.5 KiB
Go
134 lines
4.5 KiB
Go
package keeper
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import (
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"context"
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"fmt"
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storetypes "cosmossdk.io/core/store"
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"cosmossdk.io/log"
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sdkmath "cosmossdk.io/math"
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"github.com/cosmos/cosmos-sdk/codec"
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cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/slashing/types"
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stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
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)
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// Keeper of the slashing store
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type Keeper struct {
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storeService storetypes.KVStoreService
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cdc codec.BinaryCodec
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legacyAmino *codec.LegacyAmino
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sk types.StakingKeeper
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// the address capable of executing a MsgUpdateParams message. Typically, this
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// should be the x/gov module account.
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authority string
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}
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// NewKeeper creates a slashing keeper
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func NewKeeper(cdc codec.BinaryCodec, legacyAmino *codec.LegacyAmino, storeService storetypes.KVStoreService, sk types.StakingKeeper, authority string) Keeper {
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return Keeper{
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storeService: storeService,
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cdc: cdc,
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legacyAmino: legacyAmino,
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sk: sk,
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authority: authority,
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}
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}
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// GetAuthority returns the x/slashing module's authority.
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func (k Keeper) GetAuthority() string {
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return k.authority
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}
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// Logger returns a module-specific logger.
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func (k Keeper) Logger(ctx context.Context) log.Logger {
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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return sdkCtx.Logger().With("module", "x/"+types.ModuleName)
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}
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// AddPubkey sets a address-pubkey relation
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func (k Keeper) AddPubkey(ctx context.Context, pubkey cryptotypes.PubKey) error {
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bz, err := k.cdc.MarshalInterface(pubkey)
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if err != nil {
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return err
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}
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store := k.storeService.OpenKVStore(ctx)
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key := types.AddrPubkeyRelationKey(pubkey.Address())
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return store.Set(key, bz)
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}
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// GetPubkey returns the pubkey from the address-pubkey relation
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func (k Keeper) GetPubkey(ctx context.Context, a cryptotypes.Address) (cryptotypes.PubKey, error) {
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store := k.storeService.OpenKVStore(ctx)
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bz, err := store.Get(types.AddrPubkeyRelationKey(a))
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if err != nil {
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return nil, err
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}
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if bz == nil {
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return nil, fmt.Errorf("address %s not found", sdk.ConsAddress(a))
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}
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var pk cryptotypes.PubKey
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return pk, k.cdc.UnmarshalInterface(bz, &pk)
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}
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// Slash attempts to slash a validator. The slash is delegated to the staking
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// module to make the necessary validator changes. It specifies no infraction reason.
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func (k Keeper) Slash(ctx context.Context, consAddr sdk.ConsAddress, fraction sdkmath.LegacyDec, power, distributionHeight int64) error {
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return k.SlashWithInfractionReason(ctx, consAddr, fraction, power, distributionHeight, stakingtypes.Infraction_INFRACTION_UNSPECIFIED)
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}
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// SlashWithInfractionReason attempts to slash a validator. The slash is delegated to the staking
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// module to make the necessary validator changes. It specifies an infraction reason.
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func (k Keeper) SlashWithInfractionReason(ctx context.Context, consAddr sdk.ConsAddress, fraction sdkmath.LegacyDec, power, distributionHeight int64, infraction stakingtypes.Infraction) error {
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coinsBurned, err := k.sk.SlashWithInfractionReason(ctx, consAddr, distributionHeight, power, fraction, infraction)
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if err != nil {
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return err
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}
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reasonAttr := sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueUnspecified)
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switch infraction {
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case stakingtypes.Infraction_INFRACTION_DOUBLE_SIGN:
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reasonAttr = sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueDoubleSign)
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case stakingtypes.Infraction_INFRACTION_DOWNTIME:
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reasonAttr = sdk.NewAttribute(types.AttributeKeyReason, types.AttributeValueMissingSignature)
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}
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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sdkCtx.EventManager().EmitEvent(
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sdk.NewEvent(
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types.EventTypeSlash,
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sdk.NewAttribute(types.AttributeKeyAddress, consAddr.String()),
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sdk.NewAttribute(types.AttributeKeyPower, fmt.Sprintf("%d", power)),
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reasonAttr,
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sdk.NewAttribute(types.AttributeKeyBurnedCoins, coinsBurned.String()),
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),
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)
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return nil
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}
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// Jail attempts to jail a validator. The slash is delegated to the staking module
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// to make the necessary validator changes.
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func (k Keeper) Jail(ctx context.Context, consAddr sdk.ConsAddress) error {
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sdkCtx := sdk.UnwrapSDKContext(ctx)
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if err := k.sk.Jail(sdkCtx, consAddr); err != nil {
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return fmt.Errorf("slashing validator jail: %w", err)
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}
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sdkCtx.EventManager().EmitEvent(
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sdk.NewEvent(
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types.EventTypeSlash,
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sdk.NewAttribute(types.AttributeKeyJailed, consAddr.String()),
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),
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)
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return nil
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}
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func (k Keeper) deleteAddrPubkeyRelation(ctx context.Context, addr cryptotypes.Address) error {
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store := k.storeService.OpenKVStore(ctx)
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return store.Delete(types.AddrPubkeyRelationKey(addr))
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}
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