Allow extra data to be sent with Snowplow events

- Bump version of `gitlab_standard` schema

doc/development/snowplow.md

@@ -314,6 +314,7 @@ Custom event tracking and instrumentation can be added by directly calling the `
 | `project`  | Project                   | nil           | The project associated with the event. |
 | `user`     | User                      | nil           | The user associated with the event. |
 | `namespace` | Namespace                | nil           | The namespace associated with the event. |
+| `extra`   | Hash                | `{}`         | Additional keyword arguments are collected into a hash and sent with the event. |
 
 Tracking can be viewed as either tracking user behavior, or can be used for instrumentation to monitor and visualize performance over time in an area or aspect of code.
 
@@ -495,6 +496,7 @@ The [`StandardContext`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/g
 | `namespace_id` | **{dotted-circle}** | integer               |                                                               |
 | `environment`  | **{check-circle}**  | string (max 32 chars) | Name of the source environment, such as `production` or `staging`             |
 | `source`       | **{check-circle}**  | string (max 32 chars) | Name of the source application, such as  `gitlab-rails` or `gitlab-javascript` |
+| `extra`        | **{dotted-circle}**  | JSON                  | Any additional data associated with the event, in the form of key-value pairs |
 
 ### Default Schema
 

lib/gitlab/tracking.rb

@@ -9,8 +9,8 @@ module Gitlab
         Gitlab::CurrentSettings.snowplow_enabled?
       end
 
-      def event(category, action, label: nil, property: nil, value: nil, context: [], project: nil, user: nil, namespace: nil) # rubocop:disable Metrics/ParameterLists
-        contexts = [Tracking::StandardContext.new(project: project, user: user, namespace: namespace).to_context, *context]
+      def event(category, action, label: nil, property: nil, value: nil, context: [], project: nil, user: nil, namespace: nil, **extra) # rubocop:disable Metrics/ParameterLists
+        contexts = [Tracking::StandardContext.new(project: project, user: user, namespace: namespace, **extra).to_context, *context]
 
         snowplow.event(category, action, label: label, property: property, value: value, context: contexts)
         product_analytics.event(category, action, label: label, property: property, value: value, context: contexts)

lib/gitlab/tracking/standard_context.rb

@@ -3,11 +3,11 @@
 module Gitlab
   module Tracking
     class StandardContext
-      GITLAB_STANDARD_SCHEMA_URL = 'iglu:com.gitlab/gitlab_standard/jsonschema/1-0-3'
+      GITLAB_STANDARD_SCHEMA_URL = 'iglu:com.gitlab/gitlab_standard/jsonschema/1-0-4'
       GITLAB_RAILS_SOURCE = 'gitlab-rails'
 
-      def initialize(namespace: nil, project: nil, user: nil, **data)
-        @data = data
+      def initialize(namespace: nil, project: nil, user: nil, **extra)
+        @extra = extra
       end
 
       def to_context
@@ -35,8 +35,9 @@ module Gitlab
       def to_h
         {
           environment: environment,
-          source: source
-        }.merge(@data)
+          source: source,
+          extra: @extra
+        }
       end
     end
   end

spec/lib/gitlab/tracking/standard_context_spec.rb

@@ -58,10 +58,16 @@ RSpec.describe Gitlab::Tracking::StandardContext do
     end
 
     context 'with extra data' do
-      subject { described_class.new(foo: 'bar') }
+      subject { described_class.new(extra_key_1: 'extra value 1', extra_key_2: 'extra value 2') }
 
-      it 'creates a Snowplow context with the given data' do
-        expect(snowplow_context.to_json.dig(:data, :foo)).to eq('bar')
+      it 'includes extra data in `extra` hash' do
+        expect(snowplow_context.to_json.dig(:data, :extra)).to eq(extra_key_1: 'extra value 1', extra_key_2: 'extra value 2')
+      end
+    end
+
+    context 'without extra data' do
+      it 'contains an empty `extra` hash' do
+        expect(snowplow_context.to_json.dig(:data, :extra)).to be_empty
       end
     end
 

spec/lib/gitlab/tracking_spec.rb

@@ -51,7 +51,7 @@ RSpec.describe Gitlab::Tracking do
 
         expect(Gitlab::Tracking::StandardContext)
           .to receive(:new)
-          .with(project: project, user: user, namespace: namespace)
+          .with(project: project, user: user, namespace: namespace, extra_key_1: 'extra value 1', extra_key_2: 'extra value 2')
           .and_call_original
 
         expect_any_instance_of(klass).to receive(:event) do |_, category, action, args|
@@ -66,7 +66,8 @@ RSpec.describe Gitlab::Tracking do
         end
 
         described_class.event('category', 'action', label: 'label', property: 'property', value: 1.5,
-                              context: [other_context], project: project, user: user, namespace: namespace)
+                              context: [other_context], project: project, user: user, namespace: namespace,
+                              extra_key_1: 'extra value 1', extra_key_2: 'extra value 2')
       end
     end