---
# ============LICENSE_START=======================================================
#  Copyright (C) 2019 The Nordix Foundation. All rights reserved.
# ================================================================================
# 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.
#
# SPDX-License-Identifier: Apache-2.0
# ============LICENSE_END=========================================================

- name: Load execution mode variables
  include_vars: "{{ execution_mode }}.yaml"

- block:
  - name: Create directories for helm repositories
    file:
      path: "{{ item.path }}"
      state: "{{ item.state }}"
    loop:
      - {path: "{{ engine_workspace }}/offline/charts/stable", state: absent}
      - {path: "{{ engine_workspace }}/offline/charts/stable", state: directory}
      - {path: "{{ engine_workspace }}/offline/charts/local", state: absent}
      - {path: "{{ engine_workspace }}/offline/charts/local", state: directory}

  - name: Place index.yaml to webserver stable charts repository
    template:
      src: "index.yaml.j2"
      dest: "{{ engine_workspace }}/offline/charts/stable/index.yaml"
      force: true
  when: execution_mode == "offline-deployment"

- name: Initialize Helm
  command: helm init --client-only --local-repo-url {{ local_repo_url }} --stable-repo-url {{ stable_repo_url }}
  register: helm_init_result
  changed_when: true
  when: helm_version is version('v3', '<')

- name: Check if stable helm repo exists (helm v3+)
  command: "helm repo list"
  changed_when: true
  failed_when: false
  register: helm_repo_list_result

- name: Add stable helm repo (helm v3+)
  command: "helm repo add stable {{ stable_repo_url }}"
  register: helm_repo_add_stable_result
  changed_when: true
  when: >
    helm_version is version('v3.0.0', '>=')
    and execution_mode == "online-deployment"
    and helm_repo_list_result is not search(stable_repo_url)

- name: Clone Helm Charts repository
  git:
    repo: "{{ helm_charts_git_url }}"
    dest: "{{ config_path }}/repos/charts"
    version: "{{ charts_version }}"
    force: true
    recursive: true
  environment:
    http_proxy: "{{ lookup('env','http_proxy') }}"
    https_proxy: "{{ lookup('env','https_proxy') }}"
    no_proxy: "{{ lookup('env','no_proxy') }}"

- name: Generate values.yaml
  template:
    src: "values.yaml.j2"
    dest: "{{ config_path }}/repos/charts/stable/prometheus/values.yaml"
    force: true

- name: Remove previous installations of Prometheus
  command: >
    helm delete --purge "{{ prometheus_service }}"
  changed_when: true
  ignore_errors: true
  tags: reset

- name: Remove Prometheus namespace
  command: >
    kubectl delete ns "{{ prometheus_namespace }}"
  changed_when: true
  ignore_errors: true
  tags: reset

- name: Create Prometheus namespace
  k8s:
    state: present
    definition:
      apiVersion: v1
      kind: Namespace
      metadata:
        name: "{{ prometheus_namespace }}"

- name: Install Prometheus using helm
  command: >
    helm install
      {% if helm_version is version('v3.0.0', '<') %} --name {% endif %}"{{ prometheus_service }}"
      --namespace "{{ prometheus_namespace }}"
      --timeout "900{% if helm_version is version('v3.0.0', '>=') %}s{% endif %}"
      {{ config_path }}/repos/charts/stable/prometheus
  register: prometheus_helm_log
  changed_when: true

- name: Log Prometheus helm output to console
  debug:
    msg: "{{ prometheus_helm_log.stdout_lines }}"

- name: Wait until Prometheus pods are available
  k8s_facts:
    kind: Pod
    namespace: "{{ prometheus_namespace }}"
    label_selectors:
      - "app = {{ prometheus_service }}"
    field_selectors:
      - status.phase=Running
  register: prometheus_pod_status
  until:
    - prometheus_pod_status.resources is defined
    - prometheus_pod_status.resources
  retries: 30
  delay: 10

- name: Install Prometheus LoadBalancer service
  k8s:
    state: present
    definition: "{{ lookup('template', 'prometheus_service.yaml.j2') }}"
  register: prometheus_service_status

- name: Log Prometheus service information to console
  debug:
    msg:
      - "------------------------------"
      - "Prometheus Service information"
      - "------------------------------"
      - "clusterIP:  {{ prometheus_service_status.result.spec.clusterIP }}"
      - "targetPort: {{ prometheus_service_status.result.spec.ports[0].targetPort }}"
      - "nodePort:   {{ prometheus_service_status.result.spec.ports[0].nodePort }}"
      - "------------------------------"

# vim: set ts=2 sw=2 expandtab: