Doppler Import Spring Properties Files

This is a rudimentary Java CLI script to test importing Spring Property Files before baking into our server application.

It works by exporting the entire contents of a single Java properties file to JSON which can then be imported by the Doppler CLI or dashboard.

Prerequisites

• Java 18
• Gradle or Maven
• Make (optional)
• Doppler CLI

Setup

Clone this repository to your local machine.

Authenticate the Doppler CLI if you haven't already:

doppler login

Create a Doppler project for your Spring application via the Dashboard, or use the Doppler CLI:

doppler projects create spring-boot-app

Then configure the Doppler CLI that Project and Config:

doppler setup

Usage

Because the Doppler server does not yet support importing properties files, we'll convert from a properties file to JSON.

Simply execute the project and supply the path to the properties file, saving the output to a file in one of three ways:

1. Makefile (uses Maven):

make export-properties FILE="./sample-application.properties" > doppler-secrets.json

2. Maven:

./mvnw compile exec:java --quiet -Dexec.args="./sample-application.properties" > doppler-secrets.json

3. Gradle:

./gradlew run --quiet --args="./sample-application.properties" > doppler-secrets.json

Then upload the secrets using the Doppler CLI and delete the doppler-secrets.json file:

doppler secrets upload doppler-secrets.json
rm doppler-secrets.json

If using a bash shell, only a single command is needed thanks to process substitution:

 doppler secrets upload <(make export-properties FILE="./sample-application.properties")