sweeetland / crypto-dex

A small service that is responsible for retrieving current crypto rates and saving data to an SQL database every 5 minutes.

Crypto Dex 🚀

A small service that is responsible for retrieving current rates by following pairs BTC/EUR, BTC/USD, BTC/GBP, ETH/EUR, ETH/USD, ETH/GBP and saving data to an SQL database every 5 minutes.

This was built with Google Cloud services: Functions, Cloud SQL and Cloud Scheduler.

Prerequisites

1. Node: any 10.x version
2. NPM
3. GCP account
4. Gcloud CLI - make sure this is setup with your project

Installation

1. npm i to install dependencies
2. npm run create-db to create an postgres instance on Cloud SQL
3. npm run deploy-saveLatestRates && npm run deploy-getRates to deploy the functions
4. Create a .env.yml in the root directory for env variables: SQL_USER, SQL_PASSWORD, SQL_DB, INSTANCE_CONNECTION_NAME
5. You will find this info from GCP console
6. Create a table in the DB with: CREATE TABLE rates (ID UUID PRIMARY KEY, CREATED_AT TIMESTAMP, BTC_USD FLOAT, BTC_EUR FLOAT, BTC_GBP FLOAT, ETH_USD FLOAT, ETH_EUR FLOAT, ETH_GBP FLOAT);
7. Setup cloud scheduler to trigger saveLatestRates via http

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