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38 lines
1.0 KiB
Go
38 lines
1.0 KiB
Go
package ante
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import (
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"fmt"
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"github.com/kava-labs/kava/x/circuit-breaker/keeper"
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sdk "github.com/cosmos/cosmos-sdk/types"
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)
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// CircuitBreakerDecorator needs to be combined with other standard decorators (from auth) to create the app's AnteHandler.
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// CircuitBreakerDecorator errors if a tx contains a disallowed msg type
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// Call next AnteHandler if all msgs are allowed
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type CircuitBreakerDecorator struct {
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cbk keeper.Keeper
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}
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func NewCircuitBreakerDecorator(cbk keeper.Keeper) CircuitBreakerDecorator {
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return CircuitBreakerDecorator{
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cbk: cbk,
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}
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}
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func (cbd CircuitBreakerDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
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// get msg route, error if not allowed
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disallowedRoutes := cbd.cbk.GetMsgRoutes(ctx)
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for _, m := range tx.GetMsgs() {
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for _, r := range disallowedRoutes {
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if r.Route == m.Route() && r.Msg == m.Type() {
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return ctx, fmt.Errorf("route %s has been circuit broken, tx rejected", r)
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}
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}
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}
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return next(ctx, tx, simulate)
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}
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