# Octonet Exporter

This is a Java application that exports metrics from a Digital Devices OctopusNET to Prometheus.

## How to run?

### Option 1: Using Maven
This requires an installed Java Development Kit (JDK) version 17 or higher.

Set the OCTONET_IP environment variable to the IP address of your OctopusNET device and run the application using `mvn exec:java`.

#### Option 2: Using the precompiled binary
This requires an installed Java Runtime Environment (JRE) version 17 or higher.
There's a pre-built binary supplied in the download archive. You can use this by setting the OCTONET_IP environment variable to the IP address of your OctopusNET device and then run the application using `java -jar octonet-exporter-1.0-SNAPSHOT-jar-with-dependencies.jar`.

HINT: If you're using a Unix-based system like macOS or Linux, you can manipulate the environment variables non-permanently on the fly by using something like `OCTONET_IP=172.20.20.121 java -jar octonet-exporter-1.0-SNAPSHOT-jar-with-dependencies.jar` 

### Option 3 (recommended): Using Docker or Podman
Use the provided Dockerfile to build a container and run this application in Docker or Podman. Don't forget to supply an `-e OCTONET_IP=<your_octonet_ip>` to the container.

For example: 

```bash
docker build -t octonet-exporter .
docker run -d -p 9401:9401 -e OCTONET_IP=172.20.20.121 octonet-exporter
```

## How to compile a binary?

To compile a binary, run `mvn clean compile assembly:single` in the project directory. This will create a JAR file in the `target` directory that you can run using `java -jar octonet-exporter-1.0-SNAPSHOT-jar-with-dependencies.jar`.