sensor.yml

# Copyright 2018 Harri Kapanen <harri.kapanen@iki.fi>
#
# 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.
---

- hosts: all
  remote_user: pi
  gather_facts: yes
  become: yes

  vars:
    - hostname: sensor
    - apt_upgrade: true
    - timezone: Europe/Helsinki

  vars_files:
    - secrets.yml

  roles:
    - common
    - glances
    - role: node-app
      node_app_name: "rtl_433_to_mqtt"
      node_app_git_repo: "https://github.com/hkapanen/rtl_433_to_mqtt.git"
      node_app_use_socket: false
      node_app_main: "index.js"
      node_app_env:
        - MQTT_BROKER={{ karila_mqtt_broker }}
        - MQTT_USERNAME={{ karila_mqtt_username }}
        - MQTT_PASSWORD={{ karila_mqtt_password }}
        - MQTT_TOPIC='rtl_433'
        - RTL433_PARAMS='-s 1024k'

  tasks:
    - name: Create rtl_433_to_mqtt systemd timer file
      copy:
        dest: /lib/systemd/system/rtl_433_to_mqtt.timer
        content: |
          [Unit]
          Description=Restart rtl_433_to_mqtt nightly

          [Timer]
          OnCalendar=*-*-* 01:01:01
          Persistent=true

          [Install]
          WantedBy=timers.target
      register: rtl_433_to_mqtt_timer_changed

    - name: Install/update RTL_433 dependencies and mosquitto client
      apt: 
        pkg:
        - libtool
        - libusb-dev
        - librtlsdr-dev
        - rtl-sdr
        - cmake
        - mosquitto-clients

    - name: Download rtl_433
      git: repo=https://github.com/merbanan/rtl_433.git dest=/home/{{ ansible_ssh_user }}/rtl_433 clone=yes force=yes
      become: no
      register: rtl433_sources

    - name: Create build dir for rtl_433
      file: path=/home/{{ ansible_ssh_user }}/rtl_433/build state=directory owner={{ ansible_ssh_user }} mode=0755
      become: no

    - name: Configure rtl_433
      command: cmake ../
      args:
        chdir: "/home/{{ ansible_ssh_user }}/rtl_433/build"
      become: no
      when: rtl433_sources.changed

    - name: Compile rtl_433
      command: make
      args:
        chdir: "/home/{{ ansible_ssh_user }}/rtl_433/build"
      become: no
      when: rtl433_sources.changed

    - name: Install rtl_433
      command: make install
      args:
        chdir: "/home/{{ ansible_ssh_user }}/rtl_433/build"
      when: rtl433_sources.changed

# Enable and start rtl_433_to_mqtt timers. Corresponding service is taken care of by the node_app role.
    - name: "Enable and start rtl_433_to_mqtt timer"
      command: "{{ item }}"
      with_items:
        - systemctl enable rtl_433_to_mqtt.timer
        - systemctl start rtl_433_to_mqtt.timer
      when: rtl_433_to_mqtt_timer_changed

  handlers:
    - include: ../../handlers/handlers.yml