Posted on Dec 26, 2020

Part 4: DigitalOcean App Platform Hackathon Submission

This post is part of a series detailing my journey with golang from learning the language to entering the DigitalOcean App Platform Hackathon.

The app I built can be found on GitHub.

Part 4 details the DigitalOcean App Platform Hackathon submission and how it is deployed.

What I built

Category Submission

Random Roulette

App Link

N/A

Screenshots

Description

stock-checker is a golang app that spawns a task every hour to check whether any of the following UK retailers have an Xbox Series X console in stock:

This is done using a web automation library that navigates each site in a headless chromium browser.

If the app determines stock is available, a text message is sent using Twilio to the configured mobile number.

This is deployed to a DigitalOcean App Platform Worker using a Dockerfile.

Link to Source Code

GitHub

Permissive License

MIT

Background

See Part 1 of this series.

How I built it

See Part 3 of this series.

Hosting and deployment

This golang app is deployed using docker to a Worker component on DigitalOcean's App Platform.

The DO App is defined using an Application Reference specification which is shown below:

name: stock-checker-app region: fra workers: - name: bg-worker-stock-checker github: branch: main deploy_on_push: true repo: JonJam/stock-checker dockerfile_path: Dockerfile instance_count: 1 instance_size_slug: basic-xs envs: - key: SC_TWILIO_ENABLED scope: RUN_AND_BUILD_TIME value: "true" - key: SC_TWILIO_ACCOUNTSID scope: RUN_AND_BUILD_TIME type: SECRET value: "" - key: SC_TWILIO_AUTHTOKEN scope: RUN_AND_BUILD_TIME type: SECRET value: "" - key: SC_TWILIO_NUMBERTO scope: RUN_AND_BUILD_TIME type: SECRET value: "" - key: SC_TWILIO_NUMBERFROM scope: RUN_AND_BUILD_TIME type: SECRET value: ""

This App was then deployed using doctl.

Originally I was going to use a Deploy to DigitalOcean button, however worker components are not currently supported.

Prior to this project, I wasn't familiar with Digital Ocean so using the App Platform was new to me. The resources I found useful are listed below:

DEV Community