How to know that if incoming query/mutation request belong to source xyz in composer file?

[shadikkhan]

We have multiple source added in our mesh gateway, now If I have to put some specific condition (custom authentication) for a specific source then How can we do that? How to know if the incoming query/mutation request belong to a specific source? (trying to get source name that I put in .meshrc.yml file)

I have been struggling on this and so far no solution.