@codex-protocol/ethereum-service

All Codex Protocol smart contracts in a centralized package for use in various projects

This package holds all (compiled) Codex Protocol smart contracts and exports web3.Contract instances for each one.
This package also exports an instance of web3.eth for use in projects so that each individual project doesn't have to set up the eth client itself.

Table of Contents

• Install

- Clone & Set Up Required Repositories - Dependencies

• Usage

- Testing Local Contract Changes

• Maintainers
• Contribute
• License

Install

To use this package as you develop smart contracts locally, follow these steps:

Clone & Set Up Required Repositories

1. First, clone this repository and all Codex Protocol smart contract repositories you wish to use (see Dependencies below for more details):

- [contract.codex-registry](https://github.com/codex-protocol/contract.codex-registry)
- [npm.ethereum-service](https://github.com/codex-protocol/npm.ethereum-service)

```bash
$ git clone https://github.com/codex-protocol/contract.codex-registry
$ git clone https://github.com/codex-protocol/npm.ethereum-service
```

(Optional) Since this repository doesn't really do anything except hold deployed contracts, you'll probably also want to clone a repository that actually uses the contracts, such as the the [Codex Registry API](https://github.com/codex-protocol/service.codex-registry-api), [EEL](https://github.com/codex-protocol/service.eel), and/or the [Codex Viewer](https://github.com/codex-protocol/web.codex-viewer):

- [service.codex-registry-api](https://github.com/codex-protocol/service.codex-registry-api)
- [web.codex-viewer](https://github.com/codex-protocol/web.codex-viewer)
- [service.eel](https://github.com/codex-protocol/service.eel)

```bash
$ git clone https://github.com/codex-protocol/service.codex-registry-api
$ git clone https://github.com/codex-protocol/web.codex-viewer
$ git clone https://github.com/codex-protocol/service.eel
```

**IMPORTANT NOTE:** It's necessary to have all of these repositories in the same directory, since our npm scripts assume this is the case.

1. Then install all npm packages in each repository:

```bash
$ cd ../contract.codex-registry
$ npm install

$ cd ../npm.ethereum-service
$ npm install

$ cd ../service.codex-registry-api
$ npm install

$ cd ../web.codex-viewer
$ npm install

$ cd ../service.eel
$ npm install
```

1. After you've installed all npm packages, you will also need to npm link the ethereum-service repository so that other projects (e.g. the API, EEL, & the Codex Viewer) can use your locally-deployed smart contracts:

```bash
$ cd npm.ethereum-service
$ npm link

$ cd ../service.codex-registry-api
$ npm link @codex-protocol/ethereum-service

$ cd ../web.codex-viewer
$ npm link @codex-protocol/ethereum-service

$ cd ../service.eel
$ npm link @codex-protocol/ethereum-service
```

Now when you deploy the smart contracts locally, other projects will be able to pull the ABIs from the linked ethereum-service repository.

**IMPORTANT NOTE:** every time you run `npm install` in "other" repositories, you will need to re-link the ethereum-service repository. For convenience, you can simply run the npm script `npm run link-all` to link, or `npm run install-and-link` to install and link in one step. (You re-link in the "other" repositories, not the ethereum-service repository.)

Dependencies

Now you will need to install & set up some dependencies.

1. Ganache

Ganache is a blockchain development application that allows you to deploy & test contracts locally.

You can download Ganache directly from [the Truffle Framework website](http://truffleframework.com/ganache).

1. Link the ethereum-service repository

Make sure you've cloned the [ethereum-service repository](https://github.com/codex-protocol/npm.ethereum-service) and have `npm link`ed it so that other projects will be able to use your locally-deployed smart contracts (see [Clone & Set Up Required Repositories](#clone--set-up-required-repositories) above).

For more information on this repository, see the [README](https://github.com/codex-protocol/npm.ethereum-service/blob/master/README.md).

1. Deploy Codex Protocol smart contracts

After you've set up Ganache and linked the ethereum-service repository, you will need to deploy the Codex Protocol smart contracts. Examples of Codex Protocol smart contracts you may wish to deploy include:

- [contract.codex-registry](https://github.com/codex-protocol/contract.codex-registry)
- [contract.codex-coin](https://github.com/codex-protocol/contract.codex-coin)

Make sure Ganache is running, and then run:

```bash
$ cd contract.codex-registry
$ npm run migrate:reset

$ cd contract.codex-coin
$ npm run migrate:reset
```

This will make Truffle deploy the contracts to Ganache and copy over the built contract JSON files to the ethereum-service repository, where other projects will be able to read them.

Usage

You will now be able to use your locally-deployed contracts inside of any other npm linked projects.
In the other repositories, export ETHEREUM_NETWORK_ID & ETHEREUM_RPC_URL as environment variables (or use a package like dotenv to define them in a .env file.) Then you can consume the package like so:

import { eth, contracts } from '@codex-protocol/ethereum-service'

eth.sendSignedTransaction(/* ... */)

contracts.CodexRecord.getPastEvents(/* ... */)

Note that the API, EEL, and the Codex Viewer are already configured to use ethereum-service locally, so you should only have to deploy the contracts and start them up (after npm link-ing as described above in Clone & Set Up Required Repositories.)

Testing Local Contract Changes

Every time you make contract changes and redeploy them to Ganache, restart any projects using the ethereum-service and you should have the updated contract ABIs!

Maintainers

• Colin Wood (@Anaphase)

Contribute

If you have any questions, feel free to reach out to one of the repository maintainers or simply open an issue here on GitHub. If you have questions about Codex Protocol in general, feel free to reach out to us Telegram!
Pull Requests are not only allowed, but highly encouraged! All Pull Requests must pass CI checks (if applicable) and be approved by at least one repository maintainer before being considered for merge.
Codex Labs, Inc follows the Contributor Covenant Code of Conduct.

License

GNU Affero General Public License v3.0 or later © Codex Labs, Inc