Hello, We are using the REST OpenApi to publish rest services from a OAS (as a consumer).
The OAS spec specifies that error responses, such as 400, 404 and so on, should have a JSON body that follows a specific schema. Using a `RestClientRequestValidator` implementation we can achive this for client request validation errors. However when/if the client requests a path or a method on a path that is not present in the OAS, then there does not seem to be anyway to hook in and change the response body. https://github.com/apache/camel/blob/main/components/camel-rest-openapi/src/main/java/org/apache/camel/component/rest/openapi/RestOpenApiProcessor.java#L128-L142 I would like to propose adding a new SPI, following the same pattern as `RestClientRequestValidator` to make it possible to change the response produced when there is no match for the operation in the OAS. My proposal is to create a new interface ``` public interface RestOpenApiUnmatchedRequestHandler { /** * Handles the incoming request that did not match any operation in the OpenAPI specification. * * @param exchange the current exchange * @param statusCode the HTTP status code (404 or 405) * @param allowedMethods the list of allowed HTTP methods for the requested path (empty for 404) */ void handle(Exchange exchange, int statusCode, List<String> allowedMethods); } ``` And also a default handler that implements the current behaviour. Does this sound like a resonable change ? If so I would be happy to open a Jira issue and provide a PR with my proposed changes. Best regards Pontus Ullgren
