Multiple input plugins exposed via Type LoadBalancer not working

[camrossi]

I have a config with 2 http_listener_v2 plugins listening on 2 different ports.
When I try to deploy this config with Helm it fails as the generated Services are having duplicate names:

apiVersion: v1
kind: Service
metadata:
  name: telegraf
  labels:
    helm.sh/chart: telegraf-1.8.45
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: telegraf
    app.kubernetes.io/instance: telegraf
spec:
  type: LoadBalancer
  ports:
  - port: 8080
    targetPort: 8080
    name: "http-listener-v2" <====
  - port: 8081
    targetPort: 8081
    name: "http-listener-v2" <====
  - port: 9273
    targetPort: 9273
    name: "prometheus-client"
  selector:
    app.kubernetes.io/name: telegraf
    app.kubernetes.io/instance: telegraf

This seems expected from what I can see in the Template: All the Services have the name hardcoded.

We should probably have some logic to detect if the same input plugin is used and then add the port in the name or use the alias

below my value config for the relevant part:

inputs:
    - http_listener_v2:
        alias: "fab1"
        service_address: ":8080"
        paths: ["/"]
        tags:
          fabric: "fab1"
        data_format: "json_v2"
        json_v2: &json_v2_config
       <SNIP>
    - http_listener_v2:
        alias: "fab2"
        service_address: ":8081"
        paths: ["/"]
        tags:
          fabric: "fab2"
        data_format: "json_v2"
        json_v2: *json_v2_config

For now I patched the service Template to include the port in the name, not sure if there is a supported way to do this that I am missing ?

    {{- if eq $key "http_listener_v2" }}
  - port: {{ trimPrefix ":" $value.service_address | int64 }}
    targetPort: {{ trimPrefix ":" $value.service_address | int64 }}
    name: {{ printf "http-listener-v2-%d" (trimPrefix ":" $value.service_address | int64 ) }} <===
    {{- end }}