Exocore: A Distributed Private Application Framework

Exocore

Warning: Exocore is at a very early development stage, hence incomplete, unstable, and probably totally unsafe. Use at your own risk.

Exocore is a distributed applications framework with private and encrypted data storage. Think of it as an infrastructure that allows a user to own his own personal cloud that is extensible via WebAssembly applications and accessible via Web/Mobile/Backend SDKs. It is designed to be resilient to failures and will eventually allow offline usage (ex: on mobile).

Exocore is primarily built for Exomind, a personal knowledge management tool built in parallel to this project. Exocore is the application framework for Exomind.

The primary concept in Exocore is a Cell, which is a unique container for a user's applications and data.

A cell consists of:

Chain nodes manage replication and storage by using a blockchain data structure.
Store nodes manage indexation, querying, and mutation of the data (collocated with chain node).
Application host nodes run applications written in WebAssembly (collocated with store nodes)

Roadmap

v0.1 (in progress)

Chain storage and replication: Proof of concept
Transport: Proof of concept
Entity store: Proof of concept
Applications (WASM host): Proof of concept

v0.2

Cell management (Configuration replication)
Enhanced security (Chain encryption, configuration signatures, etc.)

v0.3 and beyond

Android SDK
Blob storage (IPFS)
Offline support

Dependencies

Build dependencies

On MacOS: Install Xcode and command lines tools
On Ubuntu: apt install build-essential pkg-config libssl-dev

Rust

Install using rustup
Install clippy and rustfmt: rustup component add clippy rustfmt

Cap'n Proto

On MacOS: brew install capnp
On Ubuntu: apt install capnproto

Protobuf

On MacOS: brew install protobuf swift-protobuf
On Ubuntu: apt install protobuf-compiler

Usage & configuration

CLI:

./tools/install.sh or cd exo && cargo install --path . or grab latest released binary.

Configuration

Most commands require a node configuration file, for which an example can be found here: [./examples/node.yaml]. exo can also generate and manage configurations. See Quick start.
At a minimum, the config requires 2 keypairs: one for the node, one for the cell.
The node keypair is unique per node, while the cell keypair is shared among servers that host the cell.
See Quick start section for example 2 nodes setup.

Quick start

Create a Cell hosted on 2 nodes

On node 1

Generate configuration:

exo --dir ./node1 node init --name node1

Edit configuration to include unique and accessible addresses:

exo -d ./node1 config edit

Generate a cell:

exo -d ./node1 cell init --name my_cell

On node 2

Generate configuration:

exo --dir ./node2 node init --name node1

Edit configuration to include unique and accessible addresses. If both nodes are running on the same machine, make sure they have unique ports.

exo -d ./node2 config edit

Request to join the cell as a chain and store node. This will use exocore's discovery server (disco.exocore.io) to exchange configurations:

exo -d ./node2 cell join --chain --store

and copy the displayed discovery PIN.

On node 1:

Add node 2 to cell:

exo -d ./node1 cell node add

Paste node 2's discovery PIN and accept its join request.

Start both nodes:

Node 1: exo -d ./node1 daemon
Node 2: exo -d ./node2 daemon

Join the example web client

See Web example README

Install & run Exomind

See Exomind README

Clients

Documentation

Replication

Download Details:
Author: appaquet
Source Code: https://github.com/appaquet/exocore
License: Apache-2.0 License

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