# services/monitoring/postmark-exporter-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postmark-exporter
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postmark-exporter
  template:
    metadata:
      labels:
        app: postmark-exporter
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "8000"
        prometheus.io/path: "/metrics"
    spec:
      containers:
        - name: exporter
          image: python:3.12-alpine
          imagePullPolicy: IfNotPresent
          command: ["/bin/sh", "-c"]
          args:
            - |
              set -euo pipefail
              pip install --no-cache-dir prometheus-client==0.22.1 requests==2.32.3
              exec python /app/monitoring_postmark_exporter.py
          env:
            - name: POSTMARK_SERVER_TOKEN
              valueFrom:
                secretKeyRef:
                  name: postmark-exporter
                  key: relay-username
            - name: POSTMARK_SERVER_TOKEN_FALLBACK
              valueFrom:
                secretKeyRef:
                  name: postmark-exporter
                  key: relay-password
            - name: POLL_INTERVAL_SECONDS
              value: "60"
            - name: LISTEN_PORT
              value: "8000"
          ports:
            - name: http
              containerPort: 8000
          volumeMounts:
            - name: script
              mountPath: /app
              readOnly: true
          resources:
            requests:
              cpu: 50m
              memory: 64Mi
            limits:
              cpu: 250m
              memory: 256Mi
      volumes:
        - name: script
          configMap:
            name: postmark-exporter-script