fhettak / smart-meter

Smart Meter

This sample project is used as live demo material for "Spring Boot 2.0 Web Applications". The recording of the session is available here.

Building

To build this project, you need Java 1.8, Maven 3.5 and a bash-like shell.

Just invoke the following at the root of the project:

$ mvn clean install

Running

To run this project, you also need a mongo server running your machine with default settings. If mongo is running somewhere else, please refer to the documentation to know more how you can configure Spring Boot to use that custom location.

Tip	This assumes that you are running the application on the command line. You can also very easily run this application from your IDE.

First start the aggregator, from the root of the project:

$ cd smart-meter-aggregator
$ mvn spring-boot:run

You should be able to check that the aggregator is running by issuing the following command:

$ curl http://localhost:8081/measures/firehose

If you prefer to use HTTPie you can use this command:

$ http :8081/measures/firehose --stream

Once you’ve made sure the aggregator is running, you can start the dasbhoard. From the root of the project:

$ cd smart-meter-dashboard
$ mvn spring-boot:run

If you go to http://localhost:8080 you should see a list of zones. If you click on one of them, you should see a graph updating itself every 10s

Tip	Initially the graph is empty as there is no data. Please wait a bit for the application to collect metrics from the aggregator.

Cleaning old data

If you’ve been running this project a long time ago, the application will try to fetch the latest 40 entries which may create a huge gap. To restart from scratch you can remove the collection in MongoDB.

If the dashboard is running, stop it first and then invoke the following:

$ mongo
> db.powergridsamples.drop()