Welcome to the world of CodeChain! If you’re looking to develop and customize multi-asset management systems using blockchain technology, you’ve come to the right place. In this guide, we will walk you through the process of setting up CodeChain, troubleshooting potential issues, and much more.

Building CodeChain

First things first, let’s get CodeChain downloaded and set up on your system. You will need Git and Rust, so make sure you have them installed before you begin.

Download CodeChain Code

• Clone the repository:

git clone git@github.com:CodeChain-iocodechain.git

• Navigate to the CodeChain directory:

cd codechain

• Build in release mode:

cargo build --release

This will produce an executable file located in the .target/release directory.

Setting Up with Docker

Using Docker simplifies the installation process. Docker provides a package that includes everything you need to get CodeChain running smoothly.

Install CodeChain Using Docker

After installing Docker, run the following command:

docker build -f docker/ubuntu/Dockerfile --tag kodebox/codechain:branch_or_tag_name .

For WSL users, it is recommended to use Ubuntu or install Docker for Windows and enable Hyper-V in your BIOS settings. You can check the Docker images created by running:

docker images

Run the Docker Image

To run your first image file, use:

docker run -it kodebox/codechain:branch_or_tag_name

This command should start CodeChain without issues!

Making Your Database and Keys Persistent

By default, Docker containers are independent from your host environment, meaning that your database and keys won’t persist. To maintain persistent data, utilize Docker’s volume option by running:

docker run -it -v codechain-db-vol:app/codechain/db -v codechain-keys-vol:app/codechain/keys kodebox/codechain:branch_or_tag_name

You can also customize paths using CodeChain CLI arguments.

Building from Source

If you prefer to build CodeChain from source, follow these steps:

Install Build Dependencies

You’ll need to have Rust (v1.40.0) installed alongside necessary packages:

• Ubuntu: cmake, gcc, g++, and make
• MacOS: cmake and clang
• Windows: Not directly supported, please install WSL.

Clone and Build CodeChain

• Clone the source code:

git clone git@github.com:CodeChain-iocodechain.git

• Navigate to the CodeChain directory and build:

cargo build --release

Using CodeChain SDK

Before diving in, ensure you have Node.js installed. You can install the SDK with:

npm install codechain-sdk

Or with Yarn:

yarn add codechain-sdk

Running CodeChain

To get CodeChain running, simply execute:

./target/release/codechain -c solo

To interact with CodeChain, you can send a transaction via JSON-RPC or through the JavaScript SDK.

Formatting and Linting Your Code

Before submitting contributions, run rustfmt to format your code:

rustup toolchain install nightly-2019-12-19
rustup component add rustfmt --toolchain nightly-2019-12-19
cargo +nightly-2019-12-19 fmt

For linting, it’s recommended to run clippy, which enhances code efficiency:

rustup toolchain install nightly-2019-12-19
rustup component add clippy --toolchain nightly-2019-12-19
cargo +nightly-2019-12-19 clippy --all --all-targets

Testing Your Code

Developers should write unit tests for new features and submit them with their code. You can compile and run tests using:

cargo test --all

License

CodeChain is licensed under the AGPL License. Please refer to the LICENSE file for details.

Troubleshooting

While following these instructions, you may encounter issues. Here are some common troubleshooting tips:

• If Docker fails to start, ensure that Hyper-V is enabled in your BIOS settings.
• Check that all dependencies are correctly installed and configured in your PATH.
• For network-related issues, verify your internet connection and firewall settings.

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