Amazon::Iap2

This gem is a simple implementation of the Amazon receipt verfication service outlined here with migrations from here

Installation

Add this line to your application's Gemfile:

gem 'amazon-iap2'

And then execute:

$ bundle

Or install it yourself as:

$ gem install amazon-iap2

Usage

NOTE: Amazon does not deploy a sandbox environment for testing purposes. Rather, they give you access to a deployable WAR file. You can use this WAR file to easily deploy your own sandbox environment on Heroku. See here for more details.

Initialize a client, passing in the developer secret and (optionally) the host. If a host is not passed, it will use Amazon's production endpoint.

client = Amazon::Iap::Client.new 'my_developer_secret', 'http://iap-staging.domain.com' # staging server
client = Amazon::Iap::Client.new 'my_developer_secret' # production server

Returned Values

An instance of Amazon::Iap2::Result is returned from both methods, the attributes being the underscored versions of the hash keys returned in the JSON object. For convenience, we also add purchase_time and cancel_time attributes which are Time representations of the milliseconds returned in cancel_date and cancel_date respectively. E.g.,

result = client.verify 'some-user-id', 'some-receipt-id'

result.class.name        # "Amazon::Iap2::Result"
result.product_type      # "SUBSCRIPTION"
result.product_id        # "some-sku"
result.parent_product_id # nil
result.purchase_date     # 1378751554943
result.purchase_time     # 2013-09-09 14:32:34 -0400 
result.cancel_date       # nil
result.cancel_time       # nil
result.quantity          # 1
result.test_transaction  # false
result.beta_product      # false
result.term              # term length of product type is Subscription e.g"1 YEAR" 
result.term_sku          # sku of the product subscription 
result.renewal_date      # renewal date of subscription product (in ms)

Exception Handling

Any non-200 status code will raise an exception. For convenience in internal controls, each status code raises a distinct exception. Take a look at the Amazon::Iap2::Result class for specifics.

Example exception handling:

begin
  result = client.verify 'some-user-id', 'some-receipt-id'
rescue Amazon::Iap2::Exceptions::InternalError => e
  # enqueue to try again later
end

For convenience, all exceptions inherit from Amazon::Iap2::Exceptions::Exception so you can rescue from any exception (or as a default):

begin
  result = client.verify 'some-user-id', 'receipt-id'
rescue Amazon::Iap2::Exceptions::InternalError => e
  # enqueue to try again later
rescue Amazon::Iap2::Exceptions::Exception => e
  # log the exception
end

Contributing