Url_rewriting with strip_listen_path and prometheus

Support Administration and Operation
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5

This solution from Martin seems to be exactly what I need:

1- If only /prometheus is provided (which is originally the listen_path), then I need rewrite to /prometheus/graph
2- If anything else is provided, like /prometheus/graph or /prometheus/alerts-> rewrite to /prometheus/$1.

"proxy": {
        "listen_path": "/prometheus/",
        "preserve_host_header": false,
        "target_url": "http://tyk-tests-kube-prometheus-prometheus.tyk-tests.svc.cluster.local:9090/prometheus/",
        "strip_listen_path": true,
        "disable_strip_slash": false
      },

This is how I’m defining url_rewrites:

"extended_paths": {
  "url_rewrites": [
    {
      "path": "/prometheus/",
      "method": "GET",
      "match_pattern": "prometheus",
      "rewrite_to": "/graph/"
    },
    {
      "path": "/prometheus/",
      "method": "GET",
      "match_pattern": "/prometheus/(\\w+)",
      "rewrite_to": "$1"
    }
  ]
},

Then, if just /prometheus is typed, goes to too many redirects loop.
If I manually hit /prometheus/graph, it works fine.