<%#
 Copyright 2013-2017 the original author or authors from the JBooter project.

 This file is part of the JBooter project, see https://jbooter.github.io/
 for more information.

 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.
-%>
# DB template.
#
# This defines all the configurable parameters and other objects that are needed to run the Cassandra service. This template can even be
# saved in OpenShift namespace as well so that have the flexibility to do any project specific customizations. Pls  note wherever
# displayName says *** PLEASE DO NOT CHANGE THIS ***, don't touch that as those parameters will be referenced in other places.
#
# Replication mode is not tested yet.
#
apiVersion: v1
kind: Template
metadata:
  name: <%= app.baseName.toLowerCase() %>-cassandra-template
  namespace: <%= openshiftNamespace %>
  annotations:
    description: This template defines objects that are required to spin up a cassandra pod
    tags: db, <%= app.baseName.toLowerCase() %>-cassandra<% if (storageType == 'persistent') { %> ,persistent <% } %> <% if (storageType == 'ephemeral') { %> ,ephemeral <% } %>
    openshift.io/display-name: <%= app.baseName.toLowerCase() %>-cassandra-template
    openshift.io/long-description: "This template provides objects that are required to spin up a cassandra pod. <% if (storageType ==
    'persistent') { %>The database is stored on persistent storage, so any restart of the service will not cause any impact to the data.
     Please make sure you have provisioned PVs (Persistent Volumes) before using this template. <% } %><% if (storageType == 'ephemeral') {
     %>The database is not stored on persistent storage, so any restart of the service will result in all data being lost.<% } %>"
    openshift.io/provider-display-name: JBooter-OpenShift
labels:
  app: <%= app.baseName.toLowerCase() %>-cassandra
  createdBy: JBooter-Team
parameters:
  -
    name: APPLICATION_NAME
    value: <%= app.baseName.toLowerCase() %>-cassandra
    description: Name of the application
    required: true
    displayName: Application Name
  -
    name: VOLUME_CAPACITY
    displayName: Volume Capacity
    description: Volume space available for data, e.g. 512Mi, 2Gi.
    value: 1Gi
    required: true
  -
    name: SVC_ID
    value: jbooter
    description: Name of the service account
    required: true
    displayName: "*** PLEASE DO NOT CHANGE THIS ***"
objects:
<%_ if (storageType == 'persistent') { _%>
  -
    apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      name: ${APPLICATION_NAME}
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: "${VOLUME_CAPACITY}"
<%_ } _%>
  -
    apiVersion: v1
    kind: DeploymentConfig
    metadata:
      name: ${APPLICATION_NAME}
      labels:
        app: ${APPLICATION_NAME}
    spec:
      strategy:
        type: Rolling
        rollingParams:
          updatePeriodSeconds: 1
          intervalSeconds: 1
          timeoutSeconds: 600
          maxUnavailable: 25%
          maxSurge: 25%
          post:
            failurePolicy: ignore
            execNewPod:
              command:
                - "/bin/sh"
                - "-ec"
                - |
                  hostname && cqlsh ${APPLICATION_NAME} -e "CREATE KEYSPACE
                  IF NOT EXISTS <%= app.baseName.toLowerCase() %>  WITH REPLICATION = {'class':
                  'SimpleStrategy','replication_factor': 1} AND DURABLE_WRITES =
                  true;"  && cqlsh ${APPLICATION_NAME} -e "CREATE TABLE IF NOT EXISTS
                  <%= app.baseName.toLowerCase() %>.schema_version(script_name text,checksum text,executed_by
                  text,executed_on timestamp,execution_time int,status text, PRIMARY
                  KEY(script_name));" && sleep 30
              containerName: ${APPLICATION_NAME}
        resources:
      triggers:
        -
          type: ConfigChange
      replicas: 1
      selector:
        app: ${APPLICATION_NAME}
      template:
        metadata:
          labels:
            app: ${APPLICATION_NAME}
        spec:
          volumes:
          - name: ${APPLICATION_NAME}-data
            <%_ if (storageType == 'persistent') { _%>
            persistentVolumeClaim:
              claimName: ${APPLICATION_NAME}
            <%_ } _%>
            <%_ if (storageType == 'ephemeral') { _%>
            emptyDir: {}
            <%_ } _%>
          containers:
          - name: ${APPLICATION_NAME}
            image: <%= DOCKER_CASSANDRA %>
            env:
            - name: DATA_FILE_DIRECTORIES
              value: /data/db
            ports:
              - containerPort: 9042
                name: cql
                protocol: TCP
              - containerPort: 9160
                name: thrift
                protocol: TCP
            readinessProbe:
              timeoutSeconds: 1
              initialDelaySeconds: 15
              exec:
                command:
                - "/bin/sh"
                - "-ec"
                - cqlsh  -e "quit"
            livenessProbe:
              timeoutSeconds: 1
              initialDelaySeconds: 30
              tcpSocket:
                port: 9042
            volumeMounts:
            - name: ${APPLICATION_NAME}-data
              mountPath: /data/db
            resources:
            imagePullPolicy: IfNotPresent
          serviceAccount: ${SVC_ID}
          serviceAccountName: ${SVC_ID}
          restartPolicy: Always
          terminationGracePeriodSeconds: 30
  -
    apiVersion: v1
    kind: Service
    metadata:
      name: ${APPLICATION_NAME}
      labels:
        app: ${APPLICATION_NAME}
    spec:
      ports:
        -
          name: cassandra-tcp
          protocol: TCP
          port: 9042
          targetPort: 9042
        -
          name: cassandra-thrift
          protocol: TCP
          port: 9160
          targetPort: 9160
      selector:
        app: ${APPLICATION_NAME}