apiVersion: v1
kind: ConfigMap
metadata:
  name: tmobile-exporter-config
  namespace: monitoring
data:
  # nginx reverse-proxies /metrics to json_exporter's /probe endpoint with the
  # gateway target baked in, so the existing Prometheus kubernetes-services
  # scrape job picks this up via a normal /metrics path annotation.
  nginx.conf: |
    worker_processes 1;
    pid /tmp/nginx.pid;
    error_log /dev/stderr warn;
    events { worker_connections 64; }
    http {
      access_log off;
      client_body_temp_path /tmp/nginx-client 1 2;
      proxy_temp_path       /tmp/nginx-proxy  1 2;
      fastcgi_temp_path     /tmp/nginx-fcgi   1 2;
      uwsgi_temp_path       /tmp/nginx-uwsgi  1 2;
      scgi_temp_path        /tmp/nginx-scgi   1 2;
      server {
        listen 9099;
        location = /healthz { return 200 "ok\n"; }
        location = /metrics {
          proxy_pass http://127.0.0.1:7979/probe?module=tmhi&target=http://192.168.12.1/TMI/v1/gateway?get=all;
        }
        location / { return 404; }
      }
    }

  # json_exporter mapping for the G4AR's /TMI/v1/gateway?get=all response.
  # JSONPath uses k8s client-go dialect, which requires bracket+single-quote
  # notation for digit-prefixed keys (.signal['5g']). YAML single-quoted
  # strings escape literal single quotes by doubling them.
  # allow_missing_key keeps the scrape clean when blocks are absent (the
  # G4AR omits the 4g block entirely on 5G-only deployments).
  json-exporter.yml: |
    modules:
      tmhi:
        metrics:
          - name: tmobile_gateway_uptime_seconds
            path: '{ .time.upTime }'
            help: Gateway uptime in seconds.

          - name: tmobile_gateway
            type: object
            path: '{ .device }'
            help: Static gateway metadata; value is always 1.
            labels:
              serial: '{ .serial }'
              manufacturer: '{ .manufacturer }'
              model: '{ .model }'
              name: '{ .name }'
              hardware_version: '{ .hardwareVersion }'
              software_version: '{ .softwareVersion }'
              mac: '{ .macId }'
            values:
              info: 1

          - name: tmobile_gateway_rsrp
            path: '{ .signal[''5g''].rsrp }'
            allow_missing_key: true
            help: Reference Signal Received Power (dBm).
            labels:
              type: "5g"
              band: '{ .signal[''5g''].bands[0] }'
          - name: tmobile_gateway_rsrq
            path: '{ .signal[''5g''].rsrq }'
            allow_missing_key: true
            help: Reference Signal Received Quality (dB).
            labels:
              type: "5g"
              band: '{ .signal[''5g''].bands[0] }'
          - name: tmobile_gateway_rssi
            path: '{ .signal[''5g''].rssi }'
            allow_missing_key: true
            help: Received Signal Strength Indicator (dBm).
            labels:
              type: "5g"
              band: '{ .signal[''5g''].bands[0] }'
          - name: tmobile_gateway_snr
            path: '{ .signal[''5g''].sinr }'
            allow_missing_key: true
            help: Signal-to-noise ratio (dB).
            labels:
              type: "5g"
              band: '{ .signal[''5g''].bands[0] }'
          - name: tmobile_gateway_bars
            path: '{ .signal[''5g''].bars }'
            allow_missing_key: true
            help: Signal strength in bars (0-5).
            labels:
              type: "5g"
              band: '{ .signal[''5g''].bands[0] }'
          - name: tmobile_gateway_channel_id
            path: '{ .signal[''5g''].cid }'
            allow_missing_key: true
            help: Cellular channel ID.
            labels:
              type: "5g"
              band: '{ .signal[''5g''].bands[0] }'