Merge branch 'feature-category-controller-metrics' into 'master'

Add feature categories to web metrics and logs

See merge request gitlab-org/gitlab!44918

Gemfile

@@ -310,7 +310,7 @@ gem 'sentry-raven', '~> 3.0'
 gem 'premailer-rails', '~> 1.10.3'
 
 # LabKit: Tracing and Correlation
-gem 'gitlab-labkit', '0.12.1'
+gem 'gitlab-labkit', '0.12.2'
 
 # I18n
 gem 'ruby_parser', '~> 3.8', require: false

Gemfile.lock

@@ -428,7 +428,7 @@ GEM
       fog-json (~> 1.2.0)
       mime-types
       ms_rest_azure (~> 0.12.0)
-    gitlab-labkit (0.12.1)
+    gitlab-labkit (0.12.2)
       actionpack (>= 5.0.0, < 6.1.0)
       activesupport (>= 5.0.0, < 6.1.0)
       grpc (~> 1.19)
@@ -1331,7 +1331,7 @@ DEPENDENCIES
   github-markup (~> 1.7.0)
   gitlab-chronic (~> 0.10.5)
   gitlab-fog-azure-rm (~> 1.0)
-  gitlab-labkit (= 0.12.1)
+  gitlab-labkit (= 0.12.2)
   gitlab-license (~> 1.0)
   gitlab-mail_room (~> 0.0.7)
   gitlab-markup (~> 1.7.1)

app/controllers/application_controller.rb

@@ -271,6 +271,7 @@ class ApplicationController < ActionController::Base
     headers['X-XSS-Protection'] = '1; mode=block'
     headers['X-UA-Compatible'] = 'IE=edge'
     headers['X-Content-Type-Options'] = 'nosniff'
+    headers[Gitlab::Metrics::RequestsRackMiddleware::FEATURE_CATEGORY_HEADER] = feature_category
   end
 
   def default_cache_headers
@@ -465,7 +466,8 @@ class ApplicationController < ActionController::Base
       user: -> { auth_user if strong_memoized?(:auth_user) },
       project: -> { @project if @project&.persisted? },
       namespace: -> { @group if @group&.persisted? },
-      caller_id: full_action_name) do
+      caller_id: caller_id,
+      feature_category: feature_category) do
       yield
     ensure
       @current_context = Labkit::Context.current.to_h
@@ -547,10 +549,14 @@ class ApplicationController < ActionController::Base
     end
   end
 
-  def full_action_name
+  def caller_id
     "#{self.class.name}##{action_name}"
   end
 
+  def feature_category
+    self.class.feature_category_for_action(action_name).to_s
+  end
+
   def required_signup_info
     return unless current_user
     return unless current_user.role_required?

doc/api/admin_sidekiq_queues.md

@@ -29,6 +29,7 @@ DELETE /admin/sidekiq/queues/:queue_name
 | `root_namespace`    | string         | no       | The root namespace of the project                                                                                                            |
 | `subscription_plan` | string         | no       | The subscription plan of the root namespace (GitLab.com only)                                                                                |
 | `caller_id`         | string         | no       | The endpoint or background job that schedule the job (for example: `ProjectsController#create`, `/api/:version/projects/:id`, `PostReceive`) |
+| `feature_category`  | string         | no       | The feature category of the background job (for example: `issue_tracking` or `code_review`)                                                  |
 
 At least one attribute, other than `queue_name`, is required.
 

doc/api/graphql/reference/gitlab_schema.graphql

@@ -114,6 +114,11 @@ input AdminSidekiqQueuesDeleteJobsInput {
   """
   clientMutationId: String
 
+  """
+  Delete jobs matching feature_category in the context metadata
+  """
+  featureCategory: String
+
   """
   Delete jobs matching project in the context metadata
   """

doc/api/graphql/reference/gitlab_schema.json

@@ -381,6 +381,16 @@
               },
               "defaultValue": null
             },
+            {
+              "name": "featureCategory",
+              "description": "Delete jobs matching feature_category in the context metadata",
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
             {
               "name": "queueName",
               "description": "The name of the queue to delete jobs from",

lib/gitlab/application_context.rb

@@ -12,7 +12,8 @@ module Gitlab
       Attribute.new(:namespace, Namespace),
       Attribute.new(:user, User),
       Attribute.new(:caller_id, String),
-      Attribute.new(:related_class, String)
+      Attribute.new(:related_class, String),
+      Attribute.new(:feature_category, String)
     ].freeze
 
     def self.with_context(args, &block)
@@ -45,6 +46,7 @@ module Gitlab
         hash[:root_namespace] = -> { root_namespace_path } if include_namespace?
         hash[:caller_id] = caller_id if set_values.include?(:caller_id)
         hash[:related_class] = related_class if set_values.include?(:related_class)
+        hash[:feature_category] = feature_category if set_values.include?(:feature_category)
       end
     end
 

lib/gitlab/metrics/requests_rack_middleware.rb

@@ -15,6 +15,9 @@ module Gitlab
 
       HEALTH_ENDPOINT = /^\/-\/(liveness|readiness|health|metrics)\/?$/.freeze
 
+      FEATURE_CATEGORY_HEADER = 'X-Gitlab-Feature-Category'
+      FEATURE_CATEGORY_DEFAULT = 'unknown'
+
       def initialize(app)
         @app = app
       end
@@ -50,11 +53,13 @@ module Gitlab
         started = Time.now.to_f
         health_endpoint = health_endpoint?(env['PATH_INFO'])
         status = 'undefined'
+        feature_category = nil
 
         begin
           status, headers, body = @app.call(env)
 
           elapsed = Time.now.to_f - started
+          feature_category = headers&.fetch(FEATURE_CATEGORY_HEADER, nil)
 
           unless health_endpoint
             RequestsRackMiddleware.http_request_duration_seconds.observe({ method: method, status: status.to_s }, elapsed)
@@ -66,9 +71,9 @@ module Gitlab
           raise
         ensure
           if health_endpoint
-            RequestsRackMiddleware.http_health_requests_total.increment(method: method, status: status)
+            RequestsRackMiddleware.http_health_requests_total.increment(status: status, method: method)
           else
-            RequestsRackMiddleware.http_request_total.increment(method: method, status: status)
+            RequestsRackMiddleware.http_request_total.increment(status: status, method: method, feature_category: feature_category || FEATURE_CATEGORY_DEFAULT)
           end
         end
       end

lib/gitlab/sidekiq_middleware/worker_context/server.rb

@@ -12,8 +12,10 @@ module Gitlab
           # This is not a worker we know about, perhaps from a gem
           return yield unless worker_class.respond_to?(:get_worker_context)
 
-          # Use the context defined on the class level as a base context
-          wrap_in_optional_context(worker_class.get_worker_context, &block)
+          Gitlab::ApplicationContext.with_context(feature_category: worker_class.get_feature_category.to_s) do
+            # Use the context defined on the class level as the more specific context
+            wrap_in_optional_context(worker_class.get_worker_context, &block)
+          end
         end
       end
     end

spec/controllers/application_controller_spec.rb

@@ -844,6 +844,8 @@ RSpec.describe ApplicationController do
 
   describe '#set_current_context' do
     controller(described_class) do
+      feature_category :issue_tracking
+
       def index
         Labkit::Context.with_context do |context|
           render json: context.to_h
@@ -893,6 +895,12 @@ RSpec.describe ApplicationController do
       expect(json_response['meta.caller_id']).to eq('AnonymousController#index')
     end
 
+    it 'sets the feature_category as defined in the controller' do
+      get :index, format: :json
+
+      expect(json_response['meta.feature_category']).to eq('issue_tracking')
+    end
+
     it 'assigns the context to a variable for logging' do
       get :index, format: :json
 

spec/lib/gitlab/metrics/requests_rack_middleware_spec.rb

@@ -22,7 +22,7 @@ RSpec.describe Gitlab::Metrics::RequestsRackMiddleware do
       end
 
       it 'increments requests count' do
-        expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 200)
+        expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 200, feature_category: 'unknown')
 
         subject.call(env)
       end
@@ -68,7 +68,7 @@ RSpec.describe Gitlab::Metrics::RequestsRackMiddleware do
             end
 
             it 'increments overall counter rather than health endpoint counter' do
-              expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 200)
+              expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 200, feature_category: 'unknown')
               expect(described_class).not_to receive(:http_health_requests_total)
 
               subject.call(env)
@@ -101,7 +101,7 @@ RSpec.describe Gitlab::Metrics::RequestsRackMiddleware do
       end
 
       it 'increments requests count' do
-        expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 'undefined')
+        expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 'undefined', feature_category: 'unknown')
 
         expect { subject.call(env) }.to raise_error(StandardError)
       end
@@ -113,6 +113,27 @@ RSpec.describe Gitlab::Metrics::RequestsRackMiddleware do
       end
     end
 
+    context 'when a feature category header is present' do
+      before do
+        allow(app).to receive(:call).and_return([200, { described_class::FEATURE_CATEGORY_HEADER => 'issue_tracking' }, nil])
+      end
+
+      it 'adds the feature category to the labels for http_request_total' do
+        expect(described_class).to receive_message_chain(:http_request_total, :increment).with(method: 'get', status: 200, feature_category: 'issue_tracking')
+
+        subject.call(env)
+      end
+
+      it 'does not record a feature category for health check endpoints' do
+        env['PATH_INFO'] = '/-/liveness'
+
+        expect(described_class).to receive_message_chain(:http_health_requests_total, :increment).with(method: 'get', status: 200)
+        expect(described_class).not_to receive(:http_request_total)
+
+        subject.call(env)
+      end
+    end
+
     describe '.initialize_http_request_duration_seconds' do
       it "sets labels" do
         expected_labels = []

spec/lib/gitlab/sidekiq_middleware/worker_context/server_spec.rb

@@ -14,6 +14,7 @@ RSpec.describe Gitlab::SidekiqMiddleware::WorkerContext::Server do
 
       include ApplicationWorker
 
+      feature_category :foo
       worker_context user: nil
 
       def perform(identifier, *args)
@@ -56,6 +57,12 @@ RSpec.describe Gitlab::SidekiqMiddleware::WorkerContext::Server do
       expect(TestWorker.contexts['identifier'].keys).not_to include('meta.user')
     end
 
+    it 'takes the feature category from the worker' do
+      TestWorker.perform_async('identifier', 1)
+
+      expect(TestWorker.contexts['identifier']).to include('meta.feature_category' => 'foo')
+    end
+
     it "doesn't fail for unknown workers" do
       expect { OtherWorker.perform_async }.not_to raise_error
     end