Overview

belugas-java is an engine for detecting application features for Java Web App projects based on static analysis, in other words belugas-java engine can detect the language & framework your Java application is using.

This engine works as command line interface on your local machine of a Docker container:

Table of contents

• Why?
• What is a feature?
• Installation
• Usage
• Contributing
• Credits

Why?

belugas-java is part of the Whales ecosystem: A set of tools to automatically dockerize your applications.

What is a feature?

A feature is an application attribute detected during the static analysis. This analysis is the act of derivating data from code such as programming language, frameworks, service dependencies and so on. See here for a list of attributes this engines currently supports.

A feature has the following format:

{
  "type":"feature",
  "name":"Java",
  "version":"1.8.1",
  "description":"The application uses Java code",
  "content":"",
  "categories":["Language"],
  "cue_locations":[""],
  "engines":["belugas","belugas-java"]
}

Where:

• type: Will always be a feature.
• name: This is the name of the language, framework or database that is being used in the application.
• version: The detected version of the feature. This one is optional
• description: A string explaining the feature that was detected.
• content: A markdown snippet describing the feature, including deeper explanations and links to other resources. This one is optional
• categories: Features are associated with one or more categories, for now we're only handling two categories: Language & Framework.
• cue_locations: An array of Location objects representing the places in the source code that provide evidence of the detected feature. This one is optional
• engines: An array of engine names that detected the feature, or refined the data detected by the previous engines.

Supported Features

We currently only have support for a small set of libraries, you can easily find them here and you can easily add them by placing a pull request.

Installation

Prerequisites

The Belugas Java CLI is distributed and run as a Docker image, so you only need to have Docker installed and running on your machine.

Setup

Fire up your terminal and run:

docker pull gueils/belugas-java:latest

And that's it!

Usage

Here's where the magic begins, first of all in your terminal go to the project directory you want to analyze:

cd code/path_to_project/

And then just execute the following command:

docker run \
  --interactive --tty --rm \
  --volume "$PWD":/code \
  gueils/belugas-java

And voilá! The terminal will stream a json output for each of the features detected in the following format:

{
  "type":"feature",
  "name":"Grails",
  "version":"",
  "description":"The application uses Grails",
  "categories":["Framework"],
  "cue_locations":[""]
}
{
  "type":"feature",
  "name":"Java",
  "version":"1.8.1",
  "description":"The application uses Java code",
  "categories":["Language"]
}

Contributing

Everyone is freely to collaborate, just make sure you follow our code of conduct. Thank you contributors!

Create an Issue

Find a bug and don't know how to fix it? Have trouble following the documentation or have a question about the project? Then by all means, please create an issue.

Just please make sure you check existing issues to see if what you're running into has been addressed already.

Submit a Pull Request

That's great! Just follow this steps:

1. Create a separate branch for your edits
2. Make sure your changes doesn't break the project by running your changes against current specs. We love tests! so it'll be even better if you create new ones when needed
3. Open your pull request against master

Once you've created a pull request, mainteners will chime in to review your proposed changes and to merged it if everything is right 🎉

I want to contribute but don't know where to start

That's great also! We already have some open issues for you to dive in.

Copyright

See LICENSE

Belugas-Java is maintained by Icalia Labs