README.md

Google Wallet Go samples

Overview

The files in this directory each implement a demo type for a specific Google Wallet pass type. Each demo type has methods implemented for performing tasks such as creating a pass class, updating issuer permissions, and more.

Pass type	File
Event tickets	demo_eventticket.go
Flight boarding passes	demo_flight.go
Generic passes	demo_generic.go
Gift cards	demo_giftcard.go
Loyalty program membership	demo_loyalty.go
Offers and promotions	demo_offer.go
Transit passes	demo_transit.go

Prerequisites

• Go 1.20.x
• Follow the steps outlined in the Google Wallet prerequisites to create the Google Wallet issuer account and Google Cloud service account

Environment variables

The following environment variables must be set. Alternatively, you can update the code files to set the values directly.

Enviroment variable	Description	Example
GOOGLE_APPLICATION_CREDENTIALS	Path to a Google Cloud service account key file	/path/to/key.json
WALLET_ISSUER_ID	Your Google Wallet Issuer ID	1234567890

How to use the code samples

1. First install the dependencies for the sample you wish to run (this isn't necessary a second time for running subsequent samples)

   go install demo_eventticket.go

2. Run the sample

   go run demo_eventticket.go

3. Optionally, you can manually copy the demo type in your own project. An example can be found below

   // Create a demo type instance
   // Creates the authenticated HTTP client
   d := demoEventticket{}
   d.auth()
   
   // Create a pass class
   d.createClass(issuerId, classSuffix)
   
   // Create a pass object
   d.createObject(issuerId, classSuffix, objectSuffix)
   
   // Expire a pass object
   d.expireObject(issuerId, objectSuffix)
   
   // Create an "Add to Google Wallet" link
   // that generates a new pass class and object
   d.createJwtNewObjects(issuerId, classSuffix, objectSuffix)
   
   // Create an "Add to Google Wallet" link
   // that references existing pass classes and objects
   d.createJwtExistingObjects(issuerId)
   
   // Create pass objects in batch
   d.batchCreateObjects(issuerId, classSuffix)