98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
package keeper
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import (
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"context"
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"cosmossdk.io/errors"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/cosmos/cosmos-sdk/x/crisis/types"
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govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
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)
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var _ types.MsgServer = &Keeper{}
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// VerifyInvariant implements MsgServer.VerifyInvariant method.
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// It defines a method to verify a particular invariant.
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func (k *Keeper) VerifyInvariant(goCtx context.Context, msg *types.MsgVerifyInvariant) (*types.MsgVerifyInvariantResponse, error) {
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if msg.Sender == "" {
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return nil, sdkerrors.ErrInvalidAddress.Wrap("empty address string is not allowed")
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}
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sender, err := k.addressCodec.StringToBytes(msg.Sender)
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if err != nil {
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return nil, sdkerrors.ErrInvalidAddress.Wrapf("invalid sender address: %s", err)
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}
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ctx := sdk.UnwrapSDKContext(goCtx)
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params, err := k.ConstantFee.Get(goCtx)
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if err != nil {
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return nil, err
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}
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constantFee := sdk.NewCoins(params)
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if err := k.SendCoinsFromAccountToFeeCollector(ctx, sender, constantFee); err != nil {
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return nil, err
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}
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// use a cached context to avoid gas costs during invariants
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cacheCtx, _ := ctx.CacheContext()
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found := false
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msgFullRoute := msg.FullInvariantRoute()
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var res string
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var stop bool
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for _, invarRoute := range k.Routes() {
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if invarRoute.FullRoute() == msgFullRoute {
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res, stop = invarRoute.Invar(cacheCtx)
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found = true
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break
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}
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}
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if !found {
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return nil, types.ErrUnknownInvariant
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}
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if stop {
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// Currently, because the chain halts here, this transaction will never be included in the
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// blockchain thus the constant fee will have never been deducted. Thus no refund is required.
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// TODO replace with circuit breaker
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panic(res)
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}
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeInvariant,
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sdk.NewAttribute(types.AttributeKeyRoute, msg.InvariantRoute),
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),
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})
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return &types.MsgVerifyInvariantResponse{}, nil
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}
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// UpdateParams implements MsgServer.UpdateParams method.
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// It defines a method to update the x/crisis module parameters.
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func (k *Keeper) UpdateParams(ctx context.Context, msg *types.MsgUpdateParams) (*types.MsgUpdateParamsResponse, error) {
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if k.authority != msg.Authority {
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return nil, errors.Wrapf(govtypes.ErrInvalidSigner, "invalid authority; expected %s, got %s", k.authority, msg.Authority)
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}
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if !msg.ConstantFee.IsValid() {
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return nil, errors.Wrap(sdkerrors.ErrInvalidCoins, "invalid constant fee")
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}
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if msg.ConstantFee.IsNegative() {
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return nil, errors.Wrap(sdkerrors.ErrInvalidCoins, "negative constant fee")
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}
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if err := k.ConstantFee.Set(ctx, msg.ConstantFee); err != nil {
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return nil, err
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}
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return &types.MsgUpdateParamsResponse{}, nil
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}
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