Store (don't raise) when webhook type isn't recognised.

lib/payment_processor/go_cardless/webhook_handler/process_events.rb

@@ -1,4 +1,6 @@
 require_relative 'payment'
+require_relative 'subscription'
+require_relative 'mandate'
 
 module PaymentProcessor::GoCardless
   module WebhookHandler
@@ -24,17 +26,21 @@ def already_processed?(event)
       end
 
       def process_event(event)
-        processor = ::PaymentProcessor::GoCardless::WebhookHandler.const_get(event["resource_type"].classify).new(event)
-        processor.process
-        processor
+        klass_name = event["resource_type"].classify
+
+        if ::PaymentProcessor::GoCardless::WebhookHandler.const_defined?(klass_name)
+          processor = ::PaymentProcessor::GoCardless::WebhookHandler.const_get(klass_name).new(event)
+          processor.process
+          processor
+        end
       end
 
-      def record_processing(event, handler)
+      def record_processing(event, handler = nil)
         ::Payment::GoCardless::WebhookEvent.create(
           event_id:      event['id'],
           action:        event['action'],
           resource_type: event['resource_type'],
-          resource_id:   handler.resource_id,
+          resource_id:   handler.try(:resource_id),
           body:          event.to_json
         )
       end

spec/lib/payment_processor/go_cardless/webhook_handler_spec.rb

@@ -153,6 +153,33 @@ module PaymentProcessor::GoCardless
       end
     end
 
+    describe 'Non application events' do
+      let(:non_applicable_events) do
+        [
+          {"id"=>"XEVTESTJG8GPP7I",
+            "created_at"=>"2016-04-14T11:32:20.343Z",
+            "resource_type"=>"payouts",
+            "action"=>"customer_approval_granted",
+            "links"=>{"payment"=>"payment_ID_1234", "subscription"=>"index_ID_123"},
+            "details"=>
+             {"origin"=>"customer",
+              "cause"=>"customer_approval_granted",
+              "description"=>"The customer granted approval for this subscription"},
+            "metadata"=>{}
+         }
+        ]
+      end
+
+      it 'stores event' do
+        WebhookHandler::ProcessEvents.process(non_applicable_events)
+        expect(Payment::GoCardless::WebhookEvent.first.attributes).to include({
+          event_id: "XEVTESTJG8GPP7I",
+          resource_id: nil
+        }.stringify_keys)
+      end
+
+    end
+
     describe "Subscriptions" do
       let(:pending_first)   { true }
       let(:action)          { create(:action, page: page, form_data: { recurrence_number: 1 }) }
@@ -322,7 +349,6 @@ module PaymentProcessor::GoCardless
           ]
         end
 
-
         before do
           allow( ChampaignQueue ).to receive(:push)
           WebhookHandler::ProcessEvents.process(first_events)