Blossom

Official link to chrome web store

Fair Data Protocol Browser Extension.

The Blossom acts as a web3 framework for dApps and a Fair Data Society account manager for end-users.

If you are a developer, read more about how to interact with the Blossom extension in its javascript library documentation in the library folder

Configuration

Before running the extension, it should be configured so it can be properly built and executed.

All configuration is stored inside the .env file, in the root directory. That file should be created first. There is the template .default.env file which can be used for start. The configuration properties are:

• ENVIRONMENT - It can be set to production or development and determines how the project will be built.
• SWARM_EXTENSION_ID - This ID is used to establish communication with the Swarm extension in development mode.

NOTE: Data will be loaded from bee URL defined in the Swarm extension. Check your bee URL in the Swarm extension if it is set to correct endpoint.

Installation

The extension is built by running this command:

npm run build

All compiled files will be generated in the dist directory.

To load the extension in Chrome browser:

• Open a new tab, type chrome://extensions in address bar and go to that page
• Enable development mode in the top right corner
• Click on the Load unpacked button and select the dist folder
• The extension should appear in the list of installed extensions

NOTE: At the moment, only Chrome browser is supported

Setting up the environment

Swarm extension

The Blossom extension can be configured to retrieve Bee URL and Bee debug URL directly from the Swarm extension. That is requred for running tests successfully. Before running tests, the required environment must be executed first.

The Swarm extension must be installed in the same browser as where the Blossom extension. You can install it from the browser's extension store page, or you can build it locally.

To build and run a local version of the Swarm extension check the extension's repo` or execute the following script from the root directory:

./scripts/compile-swarm-extension.sh

This script will generate the swarm-extension directory inside the root directory. You can load the compiled Swarm extension the same way as the Blossom extension by loading the swarm-extension/dist directory. Check the Installation section for the details how to load the extension.

NOTE: If you are running your version of the Swarm extension, the .env file should be updated with its extension ID.

FDP Play

The Blossom extension requires a blockchain RPC provider along with a Swarm gateway. For development purposes it is recommended to use fdp-play.

To install the environment:

$ npm install -g @fairdatasociety/fdp-play

Then to run it:

fdp-play start

This environment will run a local bee node in development mode, on default ports 1633 and 1635 for debug API. Also an instance of the fdp-contracts image will be started.

NOTE: For more options check the fdp-play repository.

Bee postage batch

There must be at least one postage stamp created. To create a postage stamp in the Bee node, run:

curl -s -XPOST http://localhost:1635/stamps/10000000/18

Development

To start the project in development mode execute this command:

npm start

This process will watch for changes in source files and compile files on every change.

Tests

Tests include both unit and integration tests.

Unit test folder structure replicate source folder structure. For example, if there is a file in the src folder with the path src/a/b/c.ts its unit test will be in the path test/a/b/c.spec.ts.

Integration tests are located directly in the test directory. These tests use Puppeteer library to test the extension in a real browser.

In order to successfully execute tests, all the dependencies must be started. Check the Setting up the environment section for detailed instructions.

Once when the complete environment is running, execute:

npm test

NOTE: Tests rely on fresh state of the running services. If tests need to be run more than once, then all docker containers must be restarted as well.

Documentation

To run documentation web pages locally, navigate to the docs directory and install all dependencies:

gem install jekyll bundler

bundle install

Then start server:

bundle exec jekyll serve

Architecture

There are three different environments in which the code is executed:

• Content scripts \ Located inside the src/content directory. This code is injected into web pages and can access various page's resources such as DOM, window object, etc.
• UI pages \ All UI pages are located inside the src/ui directory. For each directory there, a separete HTML and JavaScript file is generated, except for the common directory. Those HTML/JS files are used as UI components inside the extension.
• Service worker \ All the other code is bundled into one script and executed as a service worker script. That code sets listeners that respond to various events.