<%#
 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.
-%>
# Message Broker template.
#
# This defines all the configurable parameters and other objects that are needed to run the kafka 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.
#
apiVersion: v1
kind: Template
metadata:
  name: <%= app.baseName.toLowerCase() %>-kafka-template
  namespace: <%= openshiftNamespace %>
  annotations:
    description: This template defines objects that are required to spin up a kafka and zookeeper pod
    tags: kafka, <%= app.baseName.toLowerCase() %>-kafka<% if (storageType == 'persistent') { %> ,persistent <% } %> <% if (storageType == 'ephemeral') { %> ,ephemeral <% } %>
    openshift.io/display-name: <%= app.baseName.toLowerCase() %>-kafka-template
    openshift.io/long-description: "This template provides objects that are required to spin up a kafka and zookeeper 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() %>-kafka
  createdBy: JBooter-Team
parameters:
  -
    name: APPLICATION_NAME
    value: <%= app.baseName.toLowerCase() %>-kafka
    description: Name of the kafka application
    required: true
    displayName: Kafka Application Name
  -
    name: ZK_APPLICATION_NAME
    value: <%= app.baseName.toLowerCase() %>-zookeeper
    description: Name of the zookeeper application
    required: true
    displayName: Zookeeper 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}"
<%_ } _%>
<%_ if (storageType == 'persistent') { _%>
  -
    apiVersion: v1
    kind: PersistentVolumeClaim
    metadata:
      name: ${ZK_APPLICATION_NAME}
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: "${VOLUME_CAPACITY}"
<%_ } _%>
# Zookeeper objects. This can be later replaced with StatefulSet
  -
    apiVersion: v1
    kind: DeploymentConfig
    metadata:
      name: ${ZK_APPLICATION_NAME}
      labels:
        app: ${ZK_APPLICATION_NAME}
    spec:
# This is to define the deployment strategy (either has to follow Rolling upgrades or Recreate)
#     strategy:
#       type: Rolling
#       rollingParams:
#         updatePeriodSeconds: 1
#         intervalSeconds: 1
#         timeoutSeconds: 600
#         maxUnavailable: 25%
#         maxSurge: 25%
#       resources:
      triggers:
        -
          type: ConfigChange
      replicas: 1
      selector:
        app: ${ZK_APPLICATION_NAME}
      template:
        metadata:
          labels:
            app: ${ZK_APPLICATION_NAME}
        spec:
          volumes:
          - name: ${ZK_APPLICATION_NAME}-data
            <%_ if (storageType == 'persistent') { _%>
            persistentVolumeClaim:
              claimName: ${ZK_APPLICATION_NAME}
            <%_ } _%>
            <%_ if (storageType == 'ephemeral') { _%>
            emptyDir: {}
            <%_ } _%>
          containers:
          - name: ${ZK_APPLICATION_NAME}
            image: <%= DOCKER_ZOOKEEPER %>
            ports:
            - containerPort: 2181
            volumeMounts:
            - name: ${ZK_APPLICATION_NAME}-data
              mountPath: /tmp/zookeeper
            resources:
            imagePullPolicy: IfNotPresent
          serviceAccount: ${SVC_ID}
          serviceAccountName: ${SVC_ID}
          restartPolicy: Always
          terminationGracePeriodSeconds: 30
  -
    apiVersion: v1
    kind: Service
    metadata:
      name: ${ZK_APPLICATION_NAME}
      labels:
        app: ${ZK_APPLICATION_NAME}
    spec:
      ports:
        -
          name: zookeeper-bc
          port: 2181
          targetPort: 2181
      selector:
        app: ${ZK_APPLICATION_NAME}
# Kafka objects
  -
    apiVersion: v1
    kind: DeploymentConfig
    metadata:
      name: ${APPLICATION_NAME}
      labels:
        app: ${APPLICATION_NAME}
    spec:
# This is to define the deployment strategy (either be Rolling or Recreate)
#     strategy:
#       type: Rolling
#       rollingParams:
#         updatePeriodSeconds: 1
#         intervalSeconds: 1
#         timeoutSeconds: 600
#         maxUnavailable: 25%
#         maxSurge: 25%
#       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_KAFKA %>
            env:
            - name: KAFKA_ADVERTISED_HOST_NAME
              value: ${APPLICATION_NAME}
            - name: KAFKA_ADVERTISED_PORT
              value: '9092'
            - name: KAFKA_ZOOKEEPER_CONNECT
              value: ${ZK_APPLICATION_NAME}
            - name: KAFKA_CREATE_TOPICS
              value: 'topic-jbooter:1:1'
            ports:
            - containerPort: 9092
            volumeMounts:
            - name: ${APPLICATION_NAME}-data
              mountPath: /opt/kafka/data
            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: kafka
          port: 9092
          targetPort: 9092
      selector:
        app: ${APPLICATION_NAME}