apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus
  namespace: {{ taskserv.namespace }}
  labels:
    app: prometheus
    app.kubernetes.io/managed-by: provisioning
spec:
  replicas: 1
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      labels:
        app: prometheus
        app.kubernetes.io/managed-by: provisioning
    spec:
      {% if taskserv.placement is defined and taskserv.placement.node_class %}
      affinity:
        nodeAffinity:
          {% if taskserv.placement.mode == "require" %}
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: node-class.{{ taskserv.placement.node_class.0 }}
                    operator: In
                    values: ["true"]
          {% else %}
          preferredDuringSchedulingIgnoredDuringExecution:
            {% for c in taskserv.placement.node_class %}
            - weight: {{ 100 - loop.index0 * 10 }}
              preference:
                matchExpressions:
                  - key: node-class.{{ c }}
                    operator: In
                    values: ["true"]
            {% endfor %}
          {% endif %}
      {% endif %}
      serviceAccountName: prometheus
      securityContext:
        fsGroup: 65534
        runAsUser: 65534
        runAsNonRoot: true
      containers:
        - name: prometheus
          image: {{ taskserv.image }}
          args:
            - --config.file=/etc/prometheus/prometheus.yml
            - --storage.tsdb.path=/prometheus
            - --storage.tsdb.retention.time={{ taskserv.params.retention }}
            - --storage.tsdb.retention.size={{ taskserv.params.retention_size | default(value="8GiB") }}
            - --web.enable-lifecycle
          ports:
            - containerPort: {{ taskserv.provides.port | default(value=9090) }}
              name: http
          volumeMounts:
            - name: config
              mountPath: /etc/prometheus/prometheus.yml
              subPath: prometheus.yml
            - name: alert-rules
              mountPath: /etc/prometheus/alert-rules.yml
              subPath: alert-rules.yml
            - name: data
              mountPath: /prometheus
          {% if taskserv.probes is defined and taskserv.probes.readiness is defined %}
          readinessProbe:
            {% if taskserv.probes.readiness.type == "tcp" %}
            tcpSocket:
              port: {{ taskserv.probes.readiness.port | default(value=9090) }}
            {% else %}
            httpGet:
              path: {{ taskserv.probes.readiness.path }}
              port: {{ taskserv.probes.readiness.port | default(value=9090) }}
            {% endif %}
            initialDelaySeconds: {{ taskserv.probes.readiness.initial_delay }}
            periodSeconds: {{ taskserv.probes.readiness.period }}
            failureThreshold: {{ taskserv.probes.readiness.failure_threshold }}
          {% else %}
          readinessProbe:
            httpGet:
              path: /-/ready
              port: {{ taskserv.provides.port | default(value=9090) }}
            initialDelaySeconds: 10
            periodSeconds: 5
            failureThreshold: 6
          {% endif %}
          {% if taskserv.probes is defined and taskserv.probes.liveness is defined %}
          livenessProbe:
            {% if taskserv.probes.liveness.type == "tcp" %}
            tcpSocket:
              port: {{ taskserv.probes.liveness.port | default(value=9090) }}
            {% else %}
            httpGet:
              path: {{ taskserv.probes.liveness.path }}
              port: {{ taskserv.probes.liveness.port | default(value=9090) }}
            {% endif %}
            initialDelaySeconds: {{ taskserv.probes.liveness.initial_delay }}
            periodSeconds: {{ taskserv.probes.liveness.period }}
            failureThreshold: {{ taskserv.probes.liveness.failure_threshold }}
          {% else %}
          livenessProbe:
            httpGet:
              path: /-/healthy
              port: {{ taskserv.provides.port | default(value=9090) }}
            initialDelaySeconds: 30
            periodSeconds: 10
            failureThreshold: 3
          {% endif %}
          {% if taskserv.resources_effective is defined %}
          resources:
            requests:
              cpu: "{{ taskserv.resources_effective.cpu.request }}"
              memory: "{{ taskserv.resources_effective.memory.request }}"
            limits:
              cpu: "{{ taskserv.resources_effective.cpu.limit }}"
              memory: "{{ taskserv.resources_effective.memory.limit }}"
          {% else %}
          resources:
            requests:
              cpu: "200m"
              memory: "512Mi"
            limits:
              cpu: "1000m"
              memory: "1Gi"
          {% endif %}
      volumes:
        - name: config
          configMap:
            name: prometheus-config
        - name: alert-rules
          configMap:
            name: prometheus-alert-rules
        - name: data
          persistentVolumeClaim:
            claimName: prometheus-data