Add `source` to Snowplow StandardContext

lib/gitlab/tracking/standard_context.rb

@@ -4,6 +4,7 @@ module Gitlab
   module Tracking
     class StandardContext
       GITLAB_STANDARD_SCHEMA_URL = 'iglu:com.gitlab/gitlab_standard/jsonschema/1-0-2'.freeze
+      GITLAB_RAILS_SOURCE = 'gitlab-rails'.freeze
 
       def initialize(namespace: nil, project: nil, **data)
         @namespace = namespace
@@ -23,6 +24,10 @@ module Gitlab
         'development'
       end
 
+      def source
+        GITLAB_RAILS_SOURCE
+      end
+
       private
 
       def to_h

spec/lib/gitlab/tracking/standard_context_spec.rb

@@ -9,7 +9,7 @@ RSpec.describe Gitlab::Tracking::StandardContext do
   let(:snowplow_context) { subject.to_context }
 
   describe '#to_context' do
-    context 'with no arguments' do
+    context 'default fields' do
       context 'environment' do
         shared_examples 'contains environment' do |expected_environment|
           it 'contains environment' do
@@ -37,6 +37,10 @@ RSpec.describe Gitlab::Tracking::StandardContext do
           include_examples 'contains environment', 'production'
         end
       end
+
+      it 'contains source' do
+        expect(snowplow_context.to_json.dig(:data, :source)).to eq(described_class::GITLAB_RAILS_SOURCE)
+      end
     end
 
     context 'with extra data' do