Integrating with new Stripe Checkout or Stripe Payment Intents version?

ChrisBeach · July 12, 2019, 5:48pm

I monetise my forums using a Discourse plugin I wrote to accept payments via Stripe Checkout (version 1).

This was straightforward as Stripe handled the whole payment workflow on the (JavaScript) client-side, with a single callback when the payment succeeded / failed.

With new EU regulations looming, Stripe now mandates their Checkout version 2 implementation, or “Payment Intents”, with a transition deadline of Sept 2019.

This is problematic because (as far as I can see), both of these APIs use a more complex workflow, requiring the consumer to poll their API to wait on payment completion, or use web-hooks.

I’m very nervous about changing my plugin because:

I’m not a very experienced Ruby / Ember developer (I ripped most of the code from an existing plugin to create mine)
I don’t know whether the Discourse plugin API provides a suitable mechanism for implementing this kind of polling (where the final result is very important)

Does anyone have experience of a) Stripe V2 Checkout or Payment Intents integration with Discourse, or b) handling server polling via a Discourse plugin?

Thanks in advance

pfaffman · July 12, 2019, 6:12pm

Sounds like you’ll need to ask for donations to get your donations plugin updated.

I’ve been working on a Stripe plugin myself . And I see it’s v1.

EDIT: Oh!, but maybe I’m on v3: (in plugin.rb):

register_html_builder('server:before-head-close') do
  "<script src='https://js.stripe.com/v3/'></script>"
end

I’m pretty sure that for someone like @angus or @joebuhlig polling and webhooks are not that big a deal, but I’m afraid that I’m about where you are.

I’ve been trying to update the Stripe Gem to the latest version like this:

gem 'net-http-persistent', '3.0.1'
gem 'stripe', '4.21.2'

and it is failing like this:

Traceback (most recent call last):
/home/pfaffman/src/discourse/bin/unicorn: Bootsnap::LoadPathCache::FallbackScan
        34: from /home/pfaffman/src/discourse/bin/unicorn:49:in `<main>'
        33: from /home/pfaffman/src/discourse/bin/unicorn:49:in `load'
        32: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unicorn-5.5.1/bin/unicorn:128:in `<top (required)>'
        31: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:141:in `start'
        30: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unicorn-5.5.1/lib/unicorn/http_server.rb:794:in `build_app!'
        29: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unicorn-5.5.1/lib/unicorn.rb:54:in
`block in builder'
        28: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unicorn-5.5.1/lib/unicorn.rb:54:in
`eval'
        27: from config.ru:1:in `<main>'
        26: from config.ru:1:in `new'
        25: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `initialize'
        24: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `instance_eval'
        23: from config.ru:7:in `block in <main>'
        22: from config.ru:7:in `require'
        21: from /home/pfaffman/src/discourse/config/environment.rb:4:in `<top (required)>'
        20: from /home/pfaffman/src/discourse/config/environment.rb:4:in `require'
        19: from /home/pfaffman/src/discourse/config/application.rb:57:in `<top (required)>'
        18: from /home/pfaffman/src/discourse/config/application.rb:58:in `<module:Discourse>'
        17: from /home/pfaffman/src/discourse/config/application.rb:261:in `<class:Application>'
        16: from lib/discourse.rb:168:in `activate_plugins!'
        15: from lib/discourse.rb:168:in `each'
        14: from lib/discourse.rb:171:in `block in activate_plugins!'
        13: from /home/pfaffman/src/discourse/lib/plugin/instance.rb:490:in `activate!'
        12: from /home/pfaffman/src/discourse/lib/plugin/instance.rb:490:in `instance_eval'
        11: from /home/pfaffman/src/discourse/plugins/lc-billing/plugin.rb:8:in `activate!'
        10: from /home/pfaffman/src/discourse/lib/plugin/instance.rb:564:in `gem'
         9: from /home/pfaffman/src/discourse/lib/plugin_gem.rb:22:in `load'
         8: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
         7: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
         6: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
         5: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:26:in `require'
         4: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:40:in `rescue in require'
         3: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
         2: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/loaded_features_index.rb:89:in `register'
         1: from /home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
/home/pfaffman/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require': cannot load such file -- net-http-persistent (LoadError)

procourse memberships uses 3.28.0, but that’s still making calls to the v1 api.

EDIT: I don’t see a v2 API. https://stripe.com/docs/upgrades#2019-05-16 seems to still show v1. I’ve upgraded to latest according to https://dashboard.stripe.com/test/developers

angus · July 13, 2019, 10:31am

@ChrisBeach happy to help. If you could create a branch on the plugin and get us started with what you can figure out, I’ll work in / give you some specific pointers to make sure we get over the line before the deadline.

ChrisBeach · July 13, 2019, 9:28pm

@Angus that is a kind offer that I really appreciate. I’ll let you know when I begin work on the integration.

haroldus · July 25, 2019, 12:55am

I have updated the stripe gem successfully on local as follows:

gem 'net-http-persistent', '3.0.1', {require: false}
gem 'stripe', '4.21.3'

And then /discourse$ bundle exec rake db:migrate

ChrisBeach · August 17, 2019, 5:56pm

Good news, the pressure to upgrade Stripe payment integration is off (in the UK at least):

We wanted to send you a quick update on the upcoming Strong Customer Authentication (SCA) requirements being introduced in Europe next month.

Earlier this week, the UK regulator granted an 18 month phase-in period to give banks and businesses more time to prepare for these new requirements. As a result, we don’t expect banks to fully require SCA for payments from UK cards until March 2021.

Our information shows that 100% of your yearly payments volume is from UK cardholders. We still recommend updating your payments flow as early as possible to help avoid an increase in declines from other European cards, or in case of an early enforcement by select banks.

Our new payments APIs and other SCA-ready solutions are designed to take this uncertainty into account. If you update your integration to the new solutions ahead of 14 September 2019, our APIs won’t trigger authentication unless required by the cardholder’s bank. Similarly, after 14 September 2019, we’ll take into account each country’s enforcement timeline and only apply authentication and exemptions when SCA is required.

Overgrow · February 29, 2020, 1:12pm

I’m interested in trying this plugin. Is it working with latest Discourse 2.4? Thanks!

ChrisBeach · February 29, 2020, 2:53pm

Yup, I’m currently using it on my forum https://se23.life

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