Measurements Microservice

Documentation

Environment Variables:

Configure the service:

• LOGGING_LEVEL (Default: "INFO"): Controls the level of logging output.
• PORT (Default: 8080): The port on which the service listens for requests.

Configure the connection to your PostgreSQL database:

• POSTGRES_USER
• POSTGRES_PASSWORD
• POSTGRES_DB
• POSTGRES_HOST
• POSTGRES_PORT
• POSTGRES_SCHEMA
• DATABASE_URL

Configure the URLs of the other services:

• PLANT_SERVICE_URL
• MEASUREMENTS_SERVICE_URL
• USERS_SERVICE_URL

Configure the connection to your RabbitMQ server:

• MQTT_HOST
• MQTT_PORT
• MQTT_USERNAME
• MQTT_PASSWORD
• MQTT_TOPIC

Configure the connection to your Firebase server:

• FIREBASE_CREDENTIALS

Configure the restrictions for sending notifications.

• NOTIFICATION_RESTRICTIONS

Docker

Build container

$ docker-compose build

Start services

$ docker-compose up

List images

$ docker images

Remove dangling images:

When you run a docker-compose build, it creates a new image, but it doesn't remove the old one, so you can have a lot of images with the same name but different id. Then, you can remove all of them with the following command:

$ docker rmi $(docker images -f dangling=true -q) -f

Deep Cleaning - Free space on your disk

Warning: This will remove all containers, images, volumes and networks not used by at least one container. Its recommended to run this command before docker-compose up to avoid problems.

$ docker system prune -a --volumes

RabbitMQ

Test it

Requires pika

To launch publisher

$ python3 /external_services_tests/rabbitmq/sender.py

To launch consumer

$ python3 /external_services_tests/rabbitmq/receiver.py

Publisher will send number every second, and consumer will print them.

PostgreSQL

Test it

Requires psycopg2

$ python3 /external_services_tests/database/main.py

Run tests

To execute service unit tests, run:

$ python3 -m venv venv

$ source venv/bin/activate

$ pip install -r requirements.txt

$ cd app

$ python3 -m pytest