Traefik wasm plugin development on local

Traefik Traefik v3 (latest)
,
1

Hello everyone,

I'm building a Traefik plugin middleware that extracts the Authorization header, verifies its validity via a gRPC call to our Auth service, and adds necessary headers for subsequent requests.

Since Yaegi doesn't support importing external packages, I opted to use WebAssembly (WASM) and followed the demo plugin for HTTP calls. I compiled the .wasm file successfully (reference: GitHub demo).

Here’s my traefik.yml:

displayName: Plugin for getting payload
runtime: wasm
type: middleware

summary: 'Add payload from token'

testData:
  HeaderName: X-AUTH

And my docker-compose.yml configuration:

    reverse-proxy:
    image: traefik:v3.1.2
    command:
      - "--log.level=DEBUG"

      - "--api=true"
      - "--api.dashboard=true"
      - "--api.insecure=true"

      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--providers.file.filename=./dynamic.yml"
      - "--experimental.localPlugins.enabled=true"

      - "--entrypoints.web.address=:80"
      - "--entrypoints.websecure.address=:443"
      - "--entryPoints.postgres.address=:10000"

      - "--experimental.plugins.enabled=true"
      - "--experimental.localPlugins.traefik-auth-plugin.moduleName=github.com/LevisThors/traefik-auth-plugin"
    ports:
      - 80:80 # HTTP
      - 443:443 # HTTPS
      - 10000:10000 # Postgres # TODO: close in production
    labels:
      - "traefik.enable=true"
      - "traefik.http.services.reverse-proxy.loadbalancer.server.port=8080"
      - "traefik.http.routers.to-reverse-proxy.entrypoints=web,websecure"
      - "traefik.http.routers.to-reverse-proxy.rule=Host(`traefik.${SITE_DOMAIN}`)"
    networks:
      - random_network
    volumes:
      - ./plugins-local:/plugins-local
      - ./dynamic.yml:/dynamic.yml
      - /var/run/docker.sock:/var/run/docker.sock:ro

Here’s my dynamic.yml:

http:
  routers:
    to-exchange-rate_service:
      rule: "Host(`${SITE_DOMAIN}`) && PathPrefix(`/api/accounts/exchange-rates`)"
      service: exchange-rate_service
      entryPoints:
        - web
        - websecure
      middlewares:
        - traefik-auth-plugin

  services:
    exchange-rate_service:
      loadBalancer:
        servers:
          - url: "http://exchange-rates_service:8000"

  middlewares:
    traefik-auth-plugin:
      plugin:
        traefik-auth-plugin:
          example: "SOMETHING"

tls:
  options:
    default:
      minVersion: VersionTLS12

Despite the middleware showing up on the dashboard, I get the following error:

invalid middleware "traefik-auth-plugin@file" configuration: invalid middleware type or middleware does not exist

Has anyone encountered a similar issue? What steps can I take to resolve this?