{{/*
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.
*/}}

{{- if .Values.manifests.daemonset }}
{{- $envAll := . }}
{{- $esUserSecret := .Values.secrets.elasticsearch.user }}

{{- $mounts_filebeat := .Values.pod.mounts.filebeat.filebeat }}

{{- $serviceAccountName := printf "%s-%s" .Release.Name "filebeat" }}
{{ tuple $envAll "filebeat" $serviceAccountName | include "helm-toolkit.snippets.kubernetes_pod_rbac_serviceaccount" }}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: {{ $serviceAccountName }}
subjects:
  - kind: ServiceAccount
    name: {{ $serviceAccountName }}
    namespace: {{ .Release.Namespace }}
roleRef:
  kind: ClusterRole
  name: {{ $serviceAccountName }}
  apiGroup: rbac.authorization.k8s.io
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: {{ $serviceAccountName }}
rules:
  - apiGroups:
      - ""
    resources:
      - namespaces
      - nodes
      - pods
      - services
      - endpoints
      - replicationcontrollers
      - limitranges
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - apps
    resources:
      - statefulsets
      - daemonsets
      - deployments
      - replicasets
    verbs:
      - get
      - list
      - watch
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: filebeat
spec:
  selector:
    matchLabels:
{{ tuple $envAll "filebeat" "daemon" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
{{ tuple $envAll "filebeat" | include "helm-toolkit.snippets.kubernetes_upgrades_daemonset" | indent 2 }}
  template:
    metadata:
      labels:
{{ tuple $envAll "filebeat" "daemon" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" | indent 8 }}
        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
{{ dict "envAll" $envAll "podName" "filebeat" "containerNames" (list "filebeat" "init") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
    spec:
      serviceAccountName: {{ $serviceAccountName }}
{{ if $envAll.Values.pod.tolerations.filebeat.enabled }}
{{ tuple $envAll "filebeat" | include "helm-toolkit.snippets.kubernetes_tolerations" | indent 6 }}
{{ else }}
      nodeSelector:
        {{ .Values.labels.filebeat.node_selector_key }}: {{ .Values.labels.filebeat.node_selector_value | quote }}
{{ end }}
      initContainers:
{{ tuple $envAll "filebeat" list | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
      containers:
        - name: filebeat
          image: {{ .Values.images.tags.filebeat }}
          imagePullPolicy: {{ .Values.images.pull_policy }}
          securityContext:
            runAsUser: 0
{{ tuple $envAll $envAll.Values.pod.resources.filebeat | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
          args:
            - "-e"
          ports:
            - name: filebeat
              containerPort: {{ tuple "filebeat" "internal" "service" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
          env:
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: ELASTICSEARCH_HOST
              value: {{ tuple "elasticsearch" "internal" . | include "helm-toolkit.endpoints.hostname_namespaced_endpoint_lookup" | quote }}
            - name: ELASTICSEARCH_PORT
              value: {{ tuple "elasticsearch" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: KIBANA_HOST
              value: {{ tuple "kibana" "internal" . | include "helm-toolkit.endpoints.hostname_namespaced_endpoint_lookup" | quote }}
            - name: KIBANA_PORT
              value: {{ tuple "kibana" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" | quote }}
            - name: ELASTICSEARCH_USERNAME
              valueFrom:
                secretKeyRef:
                  name: {{ $esUserSecret }}
                  key: ELASTICSEARCH_USERNAME
            - name: ELASTICSEARCH_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ $esUserSecret }}
                  key: ELASTICSEARCH_PASSWORD
          volumeMounts:
            - name: pod-tmp
              mountPath: /tmp
            - name: data
              mountPath: /usr/share/filebeat/data
            - name: varlog
              mountPath: /var/log
            - name: varlibdockercontainers
              mountPath: /var/lib/docker/containers
              readOnly: true
            - name: filebeat-etc
              mountPath: /usr/share/filebeat/filebeat.yml
              readOnly: true
              subPath: filebeat.yml
            - name: filebeat-etc
              mountPath: /usr/share/filebeat/modules.d/system.yml
              subPath: system.yml
              readOnly: true
{{ if $mounts_filebeat.volumeMounts }}{{ toYaml $mounts_filebeat.volumeMounts | indent 8 }}{{ end }}
      volumes:
        - name: pod-tmp
          emptyDir: {}
        - name: varlog
          hostPath:
            path: /var/log
        - name: varlibdockercontainers
          hostPath:
            path: /var/lib/docker/containers
        - name: filebeat-etc
          configMap:
            name: filebeat-etc
            defaultMode: 0444
        - name: data
          hostPath:
            path: /var/lib/filebeat
            type: DirectoryOrCreate
{{ if $mounts_filebeat.volumes }}{{ toYaml $mounts_filebeat.volumes | indent 8 }}{{ end }}
{{- end }}
