failed to adapt orion to envoy go control plane

[YaoZengzeng]

1. Run envoy go control plane example:

git clone https://github.com/envoyproxy/go-control-plane.git
cd go-control-plane
make example

Now xds server will listen on localhost:18000

2. config yaml of orion, name is orion-runtime-xds.yaml:

#                                       /proxy/    ---> (cluster1) 192.168.2.10:80
#                                      |
#  http request ---> 192.168.1.1:8080 -|
#                                      |
#                                       (default)  ---> (cluster2) 127.0.0.1:80
#
#                                       /proxy/    ---> (cluster3) 192.168.2.10:81 (h2)
#                                      |
#  http request ---> 192.168.1.1:8081 -|
#                                      |
#                                      / 404
#

runtime:
  num_cpus: 2
  num_runtimes: 2
  event_interval: 31          # estimated optimal value
  global_queue_interval: null   # default
  max_io_events_per_tick: null  # default

logging:
  log_level: "debug"
  # log_directory: "."
  # log_file: "orion.log"

envoy_bootstrap:
  node:
    id: "test-id" 

  dynamic_resources:
    ads_config:
      grpc_services:
        - envoy_grpc:
            cluster_name: xds_cluster

  static_resources:
    clusters:
      - name: xds_cluster
        connect_timeout: 0.25s
        type: STATIC
        lb_policy: ROUND_ROBIN
        typed_extension_protocol_options:
          envoy.extensions.upstreams.http.v3.HttpProtocolOptions:
            "@type": type.googleapis.com/envoy.extensions.upstreams.http.v3.HttpProtocolOptions
            explicit_http_config:
              # force http2
              http2_protocol_options: {}
        load_assignment:
          cluster_name: xds_cluster
          endpoints:
            - lb_endpoints:
                - endpoint:
                    address:
                      socket_address:
                        address: 127.0.0.1
                        port_value: 18000

3. Start orion docker container:

docker run \
  --network host \
  -v ./orion-runtime-xds.yaml:/etc/orion/orion-runtime.yaml \
  orion-proxy

Log of orion:

...
2025-08-18T07:48:16.435923Z  INFO xdstask_0 orion_xds::xds::client: received config resources from xDS type_url="type.googleapis.com/envoy.config.route.v3.RouteConfiguration" size=1
2025-08-18T07:48:16.435994Z  WARN xdstask_0 orion_xds::xds::client: problem decoding config update for local_route : error Some(ConversionError(TracedError(["local_route"] / virtual_hosts ["local_service"] / routes [0] / action, UnsupportedField("host_rewrite_specifier"))))
...
2025-08-18T07:48:16.436338Z  INFO xdstask_0 orion_xds::xds::client: received config resources from xDS type_url="type.googleapis.com/envoy.config.listener.v3.Listener" size=1
2025-08-18T07:48:16.436357Z  WARN xdstask_0 orion_xds::xds::client: problem decoding config update for listener_0 : error Some(ConversionError(TracedError(["listener_0"] / filter_chains [0], MissingField("name"))))
...

Obviously because orion has not implemented all fields in xds, we should fix them first. Don't know if there will be more issues.

[Eeshu-Yadav]

/assign