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Tension

Sometimes we want to sandbox processing or operations so that they cannot access arbitrary resources from the request scope.

Resolution

An inverted gatekeeper intercepts all requests which propagate up to it and that would normally pass out to be resolved in the request scope. It acheieves this by injecting a dynamic space into the request scope which handles all requests. Once a request has been handled it can determine in an implementation specific way if that request should then be relayed.

Examples