apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-nginx-proxy-config
  namespace: {{ template "kube-prometheus-stack.namespace" . }}
  labels:
    app: {{ template "kube-prometheus-stack.name" . }}-prometheus
{{ include "kube-prometheus-stack.labels" . | indent 4 }}
{{- if .Values.prometheus.annotations }}
  annotations:
{{ toYaml .Values.prometheus.annotations | indent 4 }}
{{- end }}
data:
  nginx.conf: |-
    worker_processes      auto;
    error_log             /dev/stdout warn;
    pid                   /var/cache/nginx/nginx.pid;

    events {
       worker_connections 1024;
    }

    http {
      include       /etc/nginx/mime.types;
      log_format    main '[$time_local - $status] $remote_addr - $remote_user $request ($http_referer)';

      proxy_connect_timeout       10;
      proxy_read_timeout          180;
      proxy_send_timeout          5;
      proxy_buffering             off;
      proxy_cache_path            /var/cache/nginx/cache levels=1:2 keys_zone=my_zone:100m inactive=1d max_size=10g;

      server {
        listen          8081;
        access_log      off;

        gzip            on;
        gzip_min_length 1k;
        gzip_comp_level 2;
        gzip_types      text/plain application/javascript application/x-javascript text/css application/xml text/javascript image/jpeg image/gif image/png;
        gzip_vary       on;
        gzip_disable    "MSIE [1-6]\.";

        proxy_set_header Host $host;

        location / {
          proxy_cache         my_zone;
          proxy_cache_valid   200 302 1d;
          proxy_cache_valid   301 30d;
          proxy_cache_valid   any 5m;
          proxy_cache_bypass  $http_cache_control;
          add_header          X-Proxy-Cache $upstream_cache_status;
          add_header          Cache-Control "public";
          
          proxy_pass     http://localhost:9090/;

          sub_filter_types text/html;
          sub_filter_once off;
          sub_filter          'var PATH_PREFIX = "";' 'var PATH_PREFIX = ".";';

          if ($request_filename ~ .*\.(?:js|css|jpg|jpeg|gif|png|ico|cur|gz|svg|svgz|mp4|ogg|ogv|webm)$) {
            expires             90d;
          }

          rewrite ^/k8s/clusters/.*/proxy(.*) /$1 break;

        }
      }
    }