A progress bar that can be controlled from a Spring Integration (Java DSL) Flow.
The progress is communicated via WebSocket.
Recovers from page-refreshes on currently running flows and also runs in parallel in multiple tabs

If you use Github Codespaces, you already have all the necessary dependencies from the .devcontainer/Dockerfile.

You can check the .devcontainer/Dockerfile and install the required dependencies manually. Many of them are only necessary for the Selenium Test to work.

• run npm run build to bundle the typescript code into bundle.js.
• run the Spring Boot Application in your favorite IDE.
  • If you are using Codespaces, open it inside VS Code instead of in the browser to start the application.
• open the browser at http://localhost:8080

At the time of writing, The Java plugin for Codespaces doesn't seem to work inside the browser. However, mvn test can run the Java application just fine for the Selenium test, and with the following instructions, you can get the app to run in the browser as well:

1. run mvn package -DskipTests=true to bundle tha app into a JAR file.
2. run the app with java -jar target/spring-integration-progress-bar-0.0.1-SNAPSHOT.jar
3. in the Terminal, click on the line that says Open: http://localhost:8080 and you will be directed to a public URL in the browser that connects to the running app on GitHub.

• run the Spring Boot Application.
• run the svelte app with npm run dev:codespaces or npm run dev.
• open the browser at http://localhost:5173

The Selenium test is run as part of mvn test (see below).

To run it manually:

• run npm run build to bundle the typescript code into bundle.js.
• stop the Spring Boot Application if it is currently running.
• run the ProgressBarIT.

Running mvn test will:

• install node and npm
• run npm install
• run npm run build which uses vite to create bundle.js in the resources directory
• run npm run test to run the typescript unit tests
• run a Spring Boot Integration Test for the full application.

If you're running maven on your own machine, you can run mvn test -Dheadless=false if you want to open a browser for the Selenium test (e.g. for debugging).

• https://github.com/joshlong/techtips/tree/master/examples/spring-integration-4.1-websockets-example
• https://github.com/johnpili/websocket-progress-bar