{{/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

{{- define "probeTemplate" }}
{{- $probePort := tuple "monitoring" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
{{- $probeUser := .Values.endpoints.monitoring.auth.admin.username }}
{{- $probePass := .Values.endpoints.monitoring.auth.admin.password }}
{{- $authHeader := printf "%s:%s" $probeUser $probePass | b64enc }}
httpGet:
  path: /-/ready
  scheme: {{ tuple "monitoring" "internal" "api" . | include "helm-toolkit.endpoints.keystone_endpoint_scheme_lookup" | upper }}
  port: {{ $probePort }}
  httpHeaders:
    - name: Authorization
      value: Basic {{ $authHeader }}
{{- end }}


{{- if .Values.manifests.statefulset_prometheus }}
{{- $envAll := . }}

{{- $mounts_prometheus := .Values.pod.mounts.prometheus.prometheus }}
{{- $mounts_prometheus_init := .Values.pod.mounts.prometheus.init_container }}

{{- $rcControllerName := printf "%s-%s" $envAll.Release.Name "prometheus" }}
{{ tuple $envAll "prometheus" $rcControllerName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: {{ $rcControllerName | quote }}
rules:
  - apiGroups:
      - ""
    resources:
      - nodes
      - nodes/proxy
      - services
      - endpoints
      - pods
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - ""
    resources:
      - configmaps
    verbs:
      - get
  - nonResourceURLs:
      - "/metrics"
    verbs:
      - get
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: {{ $rcControllerName | quote }}
subjects:
  - kind: ServiceAccount
    name: {{ $rcControllerName | quote }}
    namespace: {{ .Release.Namespace }}
roleRef:
  kind: ClusterRole
  name: {{ $rcControllerName | quote }}
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{ $rcControllerName | quote }}
  annotations:
    {{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
  labels:
{{ tuple $envAll "prometheus" "api" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
  serviceName: {{ tuple "monitoring" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
  podManagementPolicy: "Parallel"
  replicas: {{ .Values.pod.replicas.prometheus }}
  selector:
    matchLabels:
{{ tuple $envAll "prometheus" "api" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "prometheus" "api" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" | indent 8 }}
        configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
{{ dict "envAll" $envAll "podName" "prometheus" "containerNames" (list "prometheus" "prometheus-perms" "apache-proxy" "init") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
    spec:
{{ dict "envAll" $envAll "application" "api" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
      serviceAccountName: {{ $rcControllerName | quote }}
      affinity:
{{ tuple $envAll "prometheus" "api" | include "helm-toolkit.snippets.kubernetes_pod_anti_affinity" | indent 8 }}
      nodeSelector:
        {{ .Values.labels.prometheus.node_selector_key }}: {{ .Values.labels.prometheus.node_selector_value | quote }}
      terminationGracePeriodSeconds: {{ .Values.pod.lifecycle.termination_grace_period.prometheus.timeout | default "30" }}
      initContainers:
{{ tuple $envAll "prometheus" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
        - name: prometheus-perms
{{ tuple $envAll "prometheus" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.prometheus | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "api" "container" "prometheus_perms" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          command:
            - chown
            - -R
            - "nobody:"
            - /var/lib/prometheus/data
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: storage
              mountPath: /var/lib/prometheus/data
      containers:
        - name: apache-proxy
{{ tuple $envAll "apache_proxy" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.apache_proxy | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "api" "container" "apache_proxy" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          command:
            - /tmp/apache.sh
            - start
          ports:
            - name: {{ tuple "monitoring" "internal" "api" . | include "helm-toolkit.endpoints.keystone_endpoint_scheme_lookup" }}
              containerPort: {{ tuple "monitoring" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
          env:
            - name: PROMETHEUS_PORT
              value: {{ tuple "monitoring" "internal" "api" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: PROMETHEUS_ADMIN_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "admin-user" | quote }}
                  key: PROMETHEUS_ADMIN_USERNAME
            - name: PROMETHEUS_ADMIN_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "admin-user" | quote }}
                  key: PROMETHEUS_ADMIN_PASSWORD
            - name: PROMETHEUS_FEDERATE_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "admin-user" | quote }}
                  key: PROMETHEUS_FEDERATE_USERNAME
            - name: PROMETHEUS_FEDERATE_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ printf "%s-%s" $envAll.Release.Name "admin-user" | quote }}
                  key: PROMETHEUS_FEDERATE_PASSWORD
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: prometheus-bin
              mountPath: /tmp/apache.sh
              subPath: apache.sh
              readOnly: true
            - name: prometheus-etc
              mountPath: /usr/local/apache2/conf/httpd.conf
              subPath: httpd.conf
              readOnly: true
{{- dict "enabled" .Values.manifests.certificates "name" .Values.secrets.tls.monitoring.prometheus.internal "path" "/etc/prometheus/certs" | include "helm-toolkit.snippets.tls_volume_mount" | indent 12 }}
        - name: prometheus
{{ tuple $envAll "prometheus" | include "helm-toolkit.snippets.image" | indent 10 }}
{{ tuple $envAll $envAll.Values.pod.resources.prometheus | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
{{ dict "envAll" $envAll "application" "api" "container" "prometheus" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
          command:
            - /tmp/prometheus.sh
            - start
          lifecycle:
            preStop:
              exec:
                command:
                  - /tmp/prometheus.sh
                  - stop
          ports:
            - name: prom-metrics
              containerPort: {{ tuple "monitoring" "internal" "api" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
{{ dict "envAll" . "component" "prometheus" "container" "prometheus" "type" "readiness" "probeTemplate" (include "probeTemplate" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 }}
{{ dict "envAll" . "component" "prometheus" "container" "prometheus" "type" "liveness" "probeTemplate" (include "probeTemplate" . | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 }}
          env:
{{- if .Values.pod.env.prometheus }}
{{ include "helm-toolkit.utils.to_k8s_env_vars" .Values.pod.env.prometheus | indent 12 }}
{{- end }}
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: etcprometheus
              mountPath: /etc/config
            - name: rulesprometheus
              mountPath: /etc/config/rules
            {{- range $key, $value := .Values.conf.prometheus.rules }}
            - name: prometheus-etc
              mountPath: /etc/config/rules/{{ $key }}.rules
              subPath: {{ $key }}.rules
              readOnly: true
            {{- end }}
            - name: prometheus-etc
              mountPath: /etc/config/prometheus.yml
              subPath: prometheus.yml
              readOnly: true
            - name: prometheus-bin
              mountPath: /tmp/prometheus.sh
              subPath: prometheus.sh
              readOnly: true
            - name: storage
              mountPath: /var/lib/prometheus/data
{{- if .Values.tls_configs }}
            - name: tls-configs
              mountPath: /tls_configs
{{- end }}
{{ if $mounts_prometheus.volumeMounts }}{{ toYaml $mounts_prometheus.volumeMounts | indent 12 }}{{ end }}
      volumes:
        - name: pod-tmp
          emptyDir: {}
        - name: etcprometheus
          emptyDir: {}
        - name: rulesprometheus
          emptyDir: {}
        - name: prometheus-etc
          secret:
            secretName: {{ printf "%s-%s" $envAll.Release.Name "prometheus-etc" | quote }}
            defaultMode: 0444
{{- dict "enabled" .Values.manifests.certificates "name" .Values.secrets.tls.monitoring.prometheus.internal | include "helm-toolkit.snippets.tls_volume" | indent 8 }}
        - name: prometheus-bin
          configMap:
            name: {{ printf "%s-%s" $envAll.Release.Name "prometheus-bin" | quote }}
            defaultMode: 0555
{{- if .Values.tls_configs }}
        - name: tls-configs
          secret:
            secretName: {{ printf "%s-%s" $envAll.Release.Name "tls-configs" | quote }}
            defaultMode: 0444
{{- end }}
{{ if $mounts_prometheus.volumes }}{{ toYaml $mounts_prometheus.volumes | indent 8 }}{{ end }}
{{- if not .Values.storage.enabled }}
        - name: storage
          emptyDir: {}
{{- else }}
  volumeClaimTemplates:
    - metadata:
        name: storage
      spec:
        accessModes: {{ .Values.storage.pvc.access_mode }}
        resources:
          requests:
            storage: {{ .Values.storage.requests.storage  }}
        storageClassName: {{ .Values.storage.storage_class }}
{{- end }}
{{- end }}
