add basic support for federation

easwars commented 2 years ago

Federation support in grpc is described here

This PR does the following:

introduces a --include-federation-experimental flag to enable generation of configs to support federation.
adds an entry to the authorities map with the empty string as key, and an empty xds_servers field.
- any resources using new-style names with without an authority will match this entry and will use the same configuration as that of the top-level xds_servers field.

In a follow-up PR, I will add support (via another command line flag) for the user to specify a JSON representation of the configuration for the authorities field. This will enable them to use custom authorities.

easwars commented 2 years ago

Gentle ping ...

ejona86 commented 2 years ago

Spoke "offline." It isn't clear to me what this change is supposed to address ("what fails to work if we don't do this"). I'd have expected us to add a real authority for TD, if anything.

ejona86 commented 2 years ago

Closing for now. We can reopen when we know what we need.

GoogleCloudPlatform / traffic-director-grpc-bootstrap

add basic support for federation #27