Consider auto-generating golang structs for envoy configuration from JSON schema

[ayj]

Hand generating and maintaining envoy configuration structs (i.e. proxy/envoy/resources.go) is a bit cumbersome. We could possibly auto-generate golang-based structs with JSON annotations from envoy's JSON schema definitions using one of the tools list here. Envoy's configuration is defined as multiple separate JSON schema so we'd still end up writing some additional generation code even with an existing JSON-schema-to-golang library. This approach may end up being more trouble than it's worth, but it might be worth considering.

[rshriram]

We could always collate all the config into one big JSON schema and generate go struct

[kyessenov]

Sounds like a good idea. When we started, we didn't have swagger schema. We'll loose the extra fields in the structs that are convenient for AST manipulation though.

[ayj]

Switching to Envoy v2 API will address this issue.