Go Health Checker

A simple health checker for your web applications.

Go Health Checker checks your website specified in CLI args every couple of seconds. This is repeated until CTRL+C is pressed. Once that is done, the program will print stats about analysis.

Run the app

go run cmd/app/main.go \
  https://www.seznam.cz \
  https://www.google.com \
  https://www.cdn77.com \
  https://www.nonexistingdomain.com \
  https://www.youtube.com

Run the tests

go test -v ./...

Architecture

The application is built using these components:

• View - representation of the data to user
  • CLIView - command line interface
• Model - data structure
  • HealthCheckResult - data structure for health check result
• Service - business logic
  • HealthCheckService - service for health check, pinging the websites
• Store - data access layer
  • InMemoryStore - in-memory store for health check results
• Controller - putting it all together
  • HealthCheckController - controller for health check, responsible for starting and stopping the health check

What can be improved?

• UI rendering
• E2E testing of the CLI -> run the main.go with some arguments, not the tests mainly test the integration of yeah component, but not the CLI itself
• Table rendering - proper info like - TIMEOUT could be displayed
• Better models -> SuccessFull model, Failed model, Timeout model etc, with proper inheritance