Adds a Webhook adapter and includes OpenFn support

Gemfile.lock

@@ -21,6 +21,7 @@ PATH
   specs:
     bess (0.1.0)
       rails (~> 6.0)
+      rest-client
       wisper (~> 2.0)
       wisper-activejob (~> 1.0.0)
 

gems/bess/bess.gemspec

@@ -18,6 +18,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "rails", "~> 6.0"
   spec.add_dependency 'wisper', '~> 2.0'
   spec.add_dependency 'wisper-activejob', '~> 1.0.0'
+  spec.add_dependency 'rest-client'
 
   spec.add_development_dependency 'rspec', '~> 3.9.0'
   spec.add_development_dependency 'rspec-rails', '~> 4.0.0'

gems/bess/lib/houdini.rb

@@ -12,6 +12,7 @@ module Houdini
   autoload :Intl
   autoload :PaymentProvider
   autoload :EventPublisher
+  autoload :WebhookAdapter
 
   mattr_accessor :intl, :maintenance, :ccs
 
@@ -38,4 +39,6 @@ module Houdini
   mattr_accessor :core_classes, default: {supporter: 'Supporter', nonprofit: 'Nonprofit'}
 
   mattr_accessor :event_publisher, default: Houdini::EventPublisher.new
+
+  mattr_accessor :webhook_adapter
 end

gems/bess/lib/houdini/webhook_adapter.rb

@@ -0,0 +1,22 @@
+# License: AGPL-3.0-or-later WITH WTO-AP-3.0-or-later
+# Full license explanation at https://github.com/houdiniproject/houdini/blob/master/LICENSE
+class Houdini::WebhookAdapter
+  extend ActiveSupport::Autoload
+  include ActiveModel::AttributeAssignment
+
+  autoload :OpenFn
+
+  attr_accessor :url, :auth_headers
+  def initialize(attributes={})
+    assign_attributes(attributes) if attributes
+  end
+
+  def post(payload)
+    RestClient::Request.execute(
+      method: :post,
+      url: url,
+      payload: payload,
+      headers: auth_headers
+    )
+  end
+end

gems/bess/lib/houdini/webhook_adapter/open_fn.rb

@@ -0,0 +1,4 @@
+# License: AGPL-3.0-or-later WITH WTO-AP-3.0-or-later
+# Full license explanation at https://github.com/houdiniproject/houdini/blob/master/LICENSE
+class Houdini::WebhookAdapter::OpenFn < Houdini::WebhookAdapter
+end