How to output OpenAPI spec with custom key need for advanced code generation features like security

[luistrigueiros]

In my use case I would like to output OpenAPI spec but I am looking I would need for the output YAML file to contain extra key's that are hint's to the code generator that allow for advanced features in the generated code like support for SpringSecurity annotations in the web controller.
How can this be achieved with TypeSpec ?
The example output desired can be found here: https://github.com/OpenAPITools/openapi-generator/pull/16259/files#diff-c70ab8ecddee5285186949a1ec4710e8dc05c7176cf4c47c209abb92a02ec809R31

x-operation-extra-annotation: - '@javax.annotation.security.RolesAllowed({"ROLE_TEST"})' - '@org.springframework.security.access.annotation.Secured({"ROLE_TEST"})' - '@org.springframework.security.access.prepost.PreAuthorize("hasRole(''ROLE_TEST'') and hasRole(''ROLE_TEST_TWO'')")'

Thank you, kindly
Luis Oscar Trigueiros

[timotheeguerin]

You can use the @OpenAPI.extension decorator from the @typespec/openapi library

https://typespec.io/playground?c=aW1wb3J0ICJAdHlwZXNwZWMvb3BlbmFwaSI7Cgp1c2luZyBPcGVuQVBJOwoKQGV4dGVuc2lvbigKICAieC1vcGVyYXRpb24tZXh0cmEtYW5ub3TFESIsCiAgWwogICAgIkBqYXZheC7KHS5zZWN1cml0eS5Sb2xlc0FsbG93ZWQoe1wiUk9MRV9URVNUXCJ9KcVExEBvcmcuc3ByaW5nZnJhbWV3b3JrykNhY2Nlc3PMXlPEG99Q31BzLnByZXBvc3QuUHJlQXV0aG9yaXplKFwiaGFz5AC0KCfJWicpIGFuZCDSGV9UV08nKVwiKSIKICBdCikKb3AgdGVzdCgpOiB2b2lkOwo%3D&e=%40typespec%2Fopenapi3&options=%7B%7D

[luistrigueiros]

Thank you, for the answer, wow I am impressed by the link to the playground with the generated spec

[bpottier]

Is there a way to do this globally? We have a use case where we want to apply an extension to all operations and want to avoid writing the same decorator all over the place.

[timotheeguerin]

You cannot do that today, the recommended approach is to create reusable operation templates this way playground