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rac-delta 🦝

rac-delta is an open delta-patching protocol made for sync builds of your apps, games, or anything you store in a folder!

This is the official SDK for NodeJs.

Benefits of rac-delta

• Backend agnostic: it does not depend on a concrete service (S3, Azure, SSH, signed URLs, etc.)
• Modular: almost any remote storage can be used via adapters
• Simple: an unique index archive (rdindex.json) centralices all information.
• Efficiency: supports streaming, concurrency, and uses Blake3 for fast hashing.
• Flexibility: highly customizable, chunk size, concurrency limits, reconstruction strategies...

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Installation

npm install rac-delta

Basic usage

In order to use the rac-delta SDK, you will need to create a RacDeltaClient, the main entry point of the SDK and where all the rac-delta operations are invoked.

import { RacDeltaClient } from 'rac-delta';

const racDeltaClient = await RacDeltaClient.create({
  chunkSize: 1024 * 1024,
  maxConcurrency: 6,
  storage: {
    type: 'ssh',
    host: 'localhost',
    pathPrefix: '/root/upload',
    port: 2222,
    credentials: {
      username: 'root',
      password: 'password',
    },
  },
});

And a example to perform a upload to the selected storage (SSH in this case)

const remoteIndexToUse = undefined;

await racDeltaClient.pipelines.upload.execute('path/to/build', remoteIndexToUse, {
  requireRemoteIndex: false,
  force: false,
  ignorePatterns: undefined,
  onStateChange: (state) => {
    console.log(state);
  },
  onProgress: (type, progress, speed) => {
    console.log(type, progress.toFixed(1), speed?.toFixed(1));
  },
});

Documentation

For all the details, check the full documentation.

Available in spanish too!

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Contributing

Contributions are welcome!

1. Fork the repository.
2. Create a branch for your feature/fix (git checkout -b feature/new-feature).
3. Commit your changes (git commit -m 'Added new feature').
4. Push to your branch (git push origin feature/new-feature).
5. Open a Pull Request.

License

This project is licensed under the MIT License.