Intercepting requests

API builder allows you to intercept requests and filter or modify them before proceeding with the normal routing process. To do that, call the intercept method

api.intercept(function (event) { ... });

The following rules apply for intercepting requests:

• stop without executing the request, override response: return an ApiResponse object (with full CORS headers if needed)
• stop without executing the request, but don't cause an error: return a falsy value, or a promise resolving to a falsy value
• stop without executing the request, but with an error: throw an exception, or return a promise that rejects
• execute the original request: return the original event, or a promise resolving with the original event
• execute a modified request: return the modified event, or a promise resolving with the modified event

Check out the Intercepting Requests Example to see this in action.