setup.md

Hummingbot Gateway

Express Middleware

NodeJS, Express middleware/REST API server that connects to protocol library.

This can be used as a common API server to handle transactions that requires custom or third party libraries.

Development Requirements

• NodeJS

  • Tested on Node v10.22.1
  • https://docs.npmjs.com/downloading-and-installing-node-js-and-npm

  # Using Homebrew MacOS:
  brew install node
  

• Yarn (for node package installations)

  • Tested on v1.22.5
  • To install yarn:

  npm install yarn
  

• ExpressJS - Install through package.json

[optional] To switch to specific Node version, you can use n to handle the version installation and switch easily.

# install n
npm -g install n
# list remote available node version
n ls-remote
# list locally installed node version
n ls
# install specific version (e.g. 10, 12.18.3, 14.11.0)
n 10
# use specific version, then select installed version
n


## Setup

```bash

git clone <repo>
cd <repo>

# install npm packages
yarn install

# setup config
cp .env.example .env

# run dev mode with hot reload on code changes
yarn run dev

# run debug mode with additional route debug logging
yarn run debug

# Run prod mode
yarn run start

# API
https://localhost:5000/api

# Protocol Endpoints
All endpoint require POST request with data

# ETHEREUM

# get ETH and ERC-20 tokens balances in the user's wallet
https://localhost:5000/eth/balances

# get ERC-20 allowances for a contract address
https://localhost:5000/eth/allowances

# approve a contract to allow transferring tokens to it
https://localhost:5000/eth/approve

# send testnet ETH to WETH contract to get testnet WETH
https://localhost:5000/eth/deposit


# BALANCER

# get price and pools for a trade
https://localhost:5000/balancer/buy-price
https://localhost:5000/balancer/sell-price

# execute trade
https://localhost:5000/balancer/buy
https://localhost:5000/balancer/sell

SSL Test

SSL is setup for HTTPS traffic to Gateway running at localhost. To run Gateway as standalone API server, use the following test script to generate the SSL certs.

$ ssl-scripts.sh

# Test endpoint
curl --insecure --key ./certs/client_key.pem --cert ./certs/client_cert.pem https://localhost:5000/api

Test endpoint on Python

# update the locaiton path of the pem files

def test_get_api_status(self):
    url = 'https://localhost:5000/api'

    ca_certs = realpath(join(__file__, join("../../certs/ca_cert.pem")))
    client_certs = (realpath(join(__file__, join("../../certs/client_cert.pem"))),
                realpath(join(__file__, join("../../certs/client_key.pem"))))
    response = requests.get(url, verify=ca_certs, cert=client_certs)

    result = response.json()
    print('result', result)

    self.assertTrue('status' in result.keys() and result['status'] == 'ok', f"Gateway API {url} not ready")