@subspace/subspace

This JavaScript library provides a simple API to submit and retrieve user data to the Subspace network. The project is in active development with a live test network designed to provide scalable and distributed archival storage.

Storage API.

The Storage API exposes a Subspace node feature called pallet-object-store that implements RPC methods to store an Object from user-provided data. The user can send a simple text or even a file; the pallet-object-store receives an Object to store and generate an objectId.

• put: Receive a signed transaction containing an Object to store. It emit a DataSubmitted Event with an objectId to get the Object from the network.

• findObject: Receives an objectId to find the related Object stored, if it exists this method will return the Object data.

To expose these methods, this library implements two main classes:

• Identity: Class to load a keyPair from different sources. An instance of this class is required to create a SubspaceClient.

  • fromWeb3: Load keyPair from web3Accounts using @polkadot/extension-dapp.

  • fromUri: Load keyPair from a secret URI, Example: //Alice///password or a mnemonic phrase.

• SubspaceClient: Class that loads an Identity instance and creates providers to interact with the network.

  • connect: Create an ApiPromise and WsProvider, returning a SubspaceClient instance ready to call:

    • putObject: Receives an Object as Uint8Array, it create and submit a signed put transaction and return an objectId.

    • getObject: Receives an objectId calling findObject to return the Object as Uint8Array.

Run this project.

Clone this repository:

• git clone https://github.com/subspace/subspace.js.git

Install dependencies

• npm ci

Build the library.

• npm run build

Usage

// Import the library.
import { SubspaceClient, Identity } from "@subspace/subspace";

// Generate an Identity from node.js
const identity = await Identity.fromUri(mnemonic);
// Generate an Identity from broser using web3Account (injected by extension)
const identity = await Identity.fromWeb3();

// Generate a SubspaceClient and connect to node and farmer rpc endpoints.
const subspaceClient = await SubspaceClient.connect(
  identity,
  NODE_WS_PROVIDER,
  FARMER_WS_PROVIDER
);

// Put the file as (Uint8Array) in to the objectStore and return the objectId
const objectId: string = await subspaceClient.putObject(objectData);

// Using the objectId get the file as (Uint8Array) from the objectStore.
const object: Uint8Array = await subspaceClient.getObject(objectId);

Run the examples.

• Check the examples folder for node.js and browser.

  • node.js.
  • dapp.
  • html.

Running a local network

You can check the Subspace repository to learn how configure and run your local network.