/
keeper.go
51 lines (40 loc) · 1.41 KB
/
keeper.go
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package keeper
import (
"fmt"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
sdk "github.com/cosmos/cosmos-sdk/types"
paramskeeper "github.com/cosmos/cosmos-sdk/x/params/keeper"
"github.com/bianjieai/iritamod/modules/params/types"
)
// Keeper define a slashing keeper
type Keeper struct {
paramskeeper.Keeper
}
// NewKeeper creates a slashing keeper
func NewKeeper(keeper paramskeeper.Keeper) Keeper {
return Keeper{
keeper,
}
}
// HandleValidatorSignature handles a validator signature, must be called once per validator per block.
// Block all subsequent logic if this validator has been removed.
func (k Keeper) UpdateParams(ctx sdk.Context, params []types.ParamChange) ([]sdk.Attribute, error) {
var changeEvents []sdk.Attribute
for _, c := range params {
ss, ok := k.GetSubspace(c.Subspace)
if !ok {
return nil, sdkerrors.Wrap(types.ErrUnknownSubspace, c.Subspace)
}
k.Logger(ctx).Info(
fmt.Sprintf("attempt to set new parameter value; key: %s, value: %s", c.Key, c.Value),
)
if !ss.Has(ctx, []byte(c.Key)) {
return nil, sdkerrors.Wrapf(types.ErrUnknownKey, c.Key)
}
if err := ss.Update(ctx, []byte(c.Key), []byte(c.Value)); err != nil {
return nil, sdkerrors.Wrapf(types.ErrSettingParameter, "key: %s, value: %s, err: %s", c.Key, c.Value, err.Error())
}
changeEvents = append(changeEvents, sdk.NewAttribute(types.AttributeKeyParamKey, c.Key))
}
return changeEvents, nil
}