This project provides an API interface that calls the Coinbase API to check the spot price for a fiat currency against Bitcoin.

The application, bitgo, is written in Golang using three non-native Go modules:

• My own custom logger to support both klog and CLI format logs
• httprouter for easier routing and DRY code
• promhttp for prometheus metrics integration

The application runs at https://bitgo.joshgrancell.com, where you can see a full list of API endpoints.

Github Actions is currently configured so that on any tagged release matching the regex v* it will:

• Build and publish a Docker image to Docker hub at jgrancell/bitgo.
• Spin up a bitgo container and test several endpoints to validate its functionality.

NOTE: The CI pipeline is expected to fail. There is a final Github Action that calls an invalid currency path which triggers a failure. This is expected, and shows that we can catch errors when we can't decode JSON.

There is also an example of how to automate the Terraform deployment of the Helm Chart by tying it into ArgoCD. Again, this is only triggered on versioned releases, so the Helm Chart is only ever deploying tags that match v*

This repository, specifically the deploy/charts Helm Chart directory, is watched by ArgoCD. On updates, ArgoCD will reconcile any changes in the live cluster.

The Helm Chart includes the option to deploy in a Highly Available configuration. When this is enabled, the pods will have an anti-affinity rule ensuring that they are all running on different nodes. Therefore, if a single Kubernetes node goes down it will not bring down the entire application.

The application was registered to ArgoCD by deploying the chart through Terraform code found in deploy/terraform.