Support external configSource Providers

[Xunzhuo]

Description:

Add support for more providers than k8s.

• Consul
• Nacos
• ...

[zirain]

how do those providers support https://github.com/envoyproxy/gateway/blob/main/GOALS.md#expressive-api?

[arkodg]

relates to https://github.com/envoyproxy/gateway/blob/main/docs/latest/design/system-design.md#provider

[github-actions]

This issue has been automatically marked as stale because it has not had activity in the last 30 days.

[arkodg]

@Xunzhuo are these config providers or infra providers
please see #1001 (comment) for more info

[lizj3624]

When can consul and nacos providers be supported?

[zirain]

For endpoint provider, we can support this via Backend?
cc @guydc WDYT?

[lizj3624]

I means stort all resource in Store all gateway resources in Nacos or Consul, not just ep resources.

[lizj3624]

For endpoint provider, we can support this via Backend? cc @guydc WDYT?

Hi，when will this feature be supported?

[arkodg]

@lizj3624 we recently added support for a File Provider

gateway/api/v1alpha1/envoygateway_types.go

Line 264 in e6a74f8

type EnvoyGatewayCustomProvider struct {

, you could use an external process to watch for resources from these various providers and update the files in a dir, and use Envoy Gateway to deploy those resources in Kubernetes