apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: istio-url-filter
spec:
  workloadSelector:
    labels:
      app: golang
  configPatches:
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_INBOUND
      proxy:
        proxyVersion: '1\.11.*'
      listener:
        filterChain:
          filter:
            name: "envoy.http_connection_manager"
            subFilter:
              name: "istio.stats"
    patch:
      operation: INSERT_BEFORE
      value:
        name: istio.attributegen
        typed_config:
          "@type": type.googleapis.com/udpa.type.v1.TypedStruct
          type_url: type.googleapis.com/envoy.extensions.filters.http.wasm.v3.Wasm
          value:
            config:
              configuration:
                "@type": type.googleapis.com/google.protobuf.StringValue
                value: |
                  {
                    "attributes": [
                      {
                        "output_attribute": "istio_url_path",
                        "match": [
                          {
                            "value": "login",
                            "condition": "request.url_path == '/login'"
                          },
                          {
                            "value": "root",
                            "condition": "request.url_path == '/'"
                          }
                        ]
                      }
                    ]
                  }
              vm_config:
                runtime: envoy.wasm.runtime.null
                code:
                  local: { inline_string: "envoy.wasm.attributegen" }