The Commerce Go SDK is a sample library that demonstrates the structure of a Coinbase Commerce driver for the REST APIs.

The Commerce Go SDK sample library is free and open source and released under the Apache License, Version 2.0.

The application and code are only available for demonstration purposes.

To use the Commerce Go SDK, initialize the Credentials struct and create a new client. The Credentials struct is JSON enabled. Ensure that Commerce API credentials are stored in a secure manner.

This code snippet reads the value of the environment variable COMMERCE_API_KEY to initiate a new Commerce client.

Copy Commerce SDK repository

git clone [email protected]:coinbase-samples/commerce-sdk-go.git

Set the API key as an environment variables in a terminal application

export COMMERCE_API_KEY=<YOUR-COMMERCE-API-KEY>

Initialize the Commerce client with credentials

creds, err := commerce.ReadEnvCredentials("COMMERCE_API_KEY")
if err != nil {
	fmt.Printf("Error reading environmental variable: %s", err)
}

client := commerce.NewClient(creds, http.Client{},)

Once a client is initialized, you may call any of the functions. For example, to create a charge,

func main() {
	// Initialize credentials struct
	creds, err := commerce.ReadEnvCredentials("COMMERCE_API_KEY")
	if err != nil {
		fmt.Printf("Error reading environmental variable: %s", err)
	}

	// Initialize client
	client := commerce.NewClient(creds, http.Client{})

	// Add desired context
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	charge, err := client.CreateCharge(ctx, &commerce.ChargeRequest{
		PricingType: "fixed_price",
		LocalPrice: &commerce.LocalPrice{
			Amount:   "1.00",
			Currency: "USD",
		},
	})

	if err != nil {
		fmt.Printf("error: %s\n", err)
	}

	// Print the hosted url
	fmt.Printf("hosted url: %s\n", charge.Data.HostedURL)
}

The "example" folder will contain the logic to create a charge in the amount of $1.00. To see this in action:

1. Change into the 'example' directory by running: cd example
2. Run go run example.go

Expected output:

created a charge ID: 64e05b38-a938-4620-a9ca-e3b806b3757b
got a hosted url: https://commerce.coinbase.com/charges/EGTHQJXZ

Coinbase Commerce API keys can be created in the Commerce UI under Settings --> Security.