################################################################################
#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
#  distributed with this work for additional information
#  regarding copyright ownership.  The ASF licenses this file
#  to you 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.
################################################################################

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: influxdb-init-scripts
data:
  init-script.iql: |
    CREATE RETENTION POLICY "a_year" ON "beam_test_metrics" DURATION 52w REPLICATION 1 DEFAULT
    CREATE RETENTION POLICY "forever" ON "beam_test_metrics" DURATION INF REPLICATION 1
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: beammetrics
  name: influxdb
spec:
  replicas: 1
  selector:
    matchLabels:
      app: influxdb
  template:
    metadata:
      labels:
        app: influxdb
    spec:
      containers:
      - image: influxdb:1.8.0
        imagePullPolicy: IfNotPresent
        name: influxdb
        ports:
        - containerPort: 8086
        - containerPort: 8088
        volumeMounts:
          - mountPath: /var/lib/influxdb
            name: influxdb-storage
          - mountPath: /docker-entrypoint-initdb.d
            name: influxdb-init-scripts
            readOnly: True
        env:
          # Default database name. Influx will create a new database with that
          # name if it does not exist.
          - name: INFLUXDB_DB
            value: beam_test_metrics
          # Enable user authentication. Note: InfluxDB will NOT enforce
          # authentication if there is no admin user.
          - name: INFLUXDB_HTTP_AUTH_ENABLED
            value: "true"
          # Expose the port 8088 to allow backing up and restoring database
          # from another container.
          - name: INFLUXDB_BIND_ADDRESS
            value: ":8088"
        envFrom:
          # A generic secret that should contain the following keys:
          #  * `INFLUXDB_ADMIN_USER` - The name of the admin user to be created.
          #  * `INFLUXDB_ADMIN_PASSWORD`
          #  * `INFLUXDB_USER` - The name of a user to be created. The user will
          #    be granted read and write permissions for a database specified
          #    in `INFLUXDB_DB`
          #  * `INFLUXDB_USER_PASSWORD`
          - secretRef:
              name: influxdb-creds
      restartPolicy: Always
      volumes:
        - name: influxdb-storage
          persistentVolumeClaim:
            claimName: influxdb-storage
        - name: influxdb-init-scripts
          configMap:
            name: influxdb-init-scripts
---
apiVersion: v1
kind: Service
metadata:
  name: influxdb
  # Makes the service accessible to Compute Engine VM instances running in
  # the same region on the same VPC network.
  #
  # For more information, see:
  # https://cloud.google.com/kubernetes-engine/docs/how-to/internal-load-balancing
  annotations:
    cloud.google.com/load-balancer-type: "Internal"
spec:
  type: LoadBalancer
  ports:
  - port: 8086
    targetPort: 8086
  selector:
    app: influxdb
---
apiVersion: v1
kind: Service
metadata:
  name: influxdb-rpc
spec:
  ports:
  - port: 8088
    targetPort: 8088
  selector:
    app: influxdb