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32 lines
1003 B
Go
32 lines
1003 B
Go
package circuit-breaker
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// CircuiteBreakerDecorator 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
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}
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func NewCircuitBreakerDecorator(cbk 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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// TODO need to tidy up the types used to store broken routes
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// get msg route, error if not allowed
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disallowedRoutes := cbd.cbk.GetRoutes(ctx)
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requestedRoutes := tx.Msgs
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for m, _ := range tx.Msgs {
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for r, _ := range disallowedRoutes {
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if r == m.Route() {
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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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