openapi-inject admin scope validation NPE on gateway without openapi spec

[stevehu]

The openapi-inject.yml will merge with openapi.yml for the application during the server startup, it there is no openapi.yml, the merging will stop and there would be no specification available on the gateway. In this case, the scope validation will fail as there is no spec to compare the defined scopes.

[stevehu]

At this moment, we cannot reproduce this issue reported by one of our users. If there is no openapi.yml provided in the gateway, the default dummy openapi.yml will be loaded and merged with the openapi-inject.yml in the same default module config.

https://github.com/networknt/light-rest-4j/tree/master/openapi-meta/src/main/resources/config

[stevehu]

This issue is resolve with the following.

#266
#264