Add advanced_search metrics to the dictionary

This change adds 4 new metrics to the metrics dictionary:

- advanced_search.version
- advanced_search.distribution
- advanced_search.build_type
- advanced_search.lucene_version

They were introduced to usage ping in
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/77365,
but we had missed that we need to add them to the dictionary.

EE: true
Changelog: other

ee/config/metrics/settings/20220218105708_version.yml

+key_path: advanced_search.version
+description: Advanced Search search engine server version
+product_section: enablement
+product_stage: enablement
+product_group: group::global search
+value_type: string
+status: active
+milestone: "14.9"
+instrumentation_class: AdvancedSearch::DistributionMetric
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/81003
+time_frame: none
+data_source: system
+data_category: optional
+distribution:
+- ee
+tier:
+- premium
+- ultimate

ee/config/metrics/settings/20220218105932_distribution.yml

+key_path: advanced_search.distribution
+description: Advanced Search search engine distribution
+product_section: enablement
+product_stage: enablement
+product_group: group::global search
+value_type: string
+status: active
+milestone: "14.9"
+instrumentation_class: AdvancedSearch::VersionMetric
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/81003
+time_frame: none
+data_source: system
+data_category: optional
+distribution:
+- ee
+tier:
+- premium
+- ultimate

ee/config/metrics/settings/20220218110126_build_type.yml

+key_path: advanced_search.build_type
+description: Advanced Search search engine build_type
+product_section: enablement
+product_stage: enablement
+product_group: group::global search
+value_type: string
+status: active
+milestone: "14.9"
+instrumentation_class: AdvancedSearch::BuildTypeMetric
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/81003
+time_frame: none
+data_source: system
+data_category: optional
+distribution:
+- ee
+tier:
+- premium
+- ultimate

ee/config/metrics/settings/20220218110238_lucene_version.yml

+key_path: advanced_search.lucene_version
+description: Advanced Search search engine lucene version
+product_section: enablement
+product_stage: enablement
+product_group: group::global search
+value_type: string
+status: active
+milestone: "14.9"
+instrumentation_class: AdvancedSearch::LuceneVersionMetric
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/81003
+time_frame: none
+data_source: system
+data_category: optional
+distribution:
+- ee
+tier:
+- premium
+- ultimate

ee/lib/ee/gitlab/usage_data.rb

@@ -109,9 +109,12 @@ module EE
         def components_usage_data
           usage_data = super
 
-          if ::Gitlab::CurrentSettings.elasticsearch_indexing?
-            usage_data[:advanced_search] = add_metric("AdvancedSearchMetric")
-          end
+          usage_data[:advanced_search] = {
+              distribution:   add_metric("AdvancedSearch::DistributionMetric"),
+              version:        add_metric("AdvancedSearch::VersionMetric"),
+              build_type:     add_metric("AdvancedSearch::BuildTypeMetric"),
+              lucene_version: add_metric("AdvancedSearch::LuceneVersionMetric")
+          }
 
           usage_data
         end

ee/lib/gitlab/usage/metrics/instrumentations/advanced_search/build_type_metric.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module Usage
+    module Metrics
+      module Instrumentations
+        module AdvancedSearch
+          class BuildTypeMetric < GenericMetric
+            value do
+              if ::Gitlab::CurrentSettings.elasticsearch_indexing?
+                ::Gitlab::Elastic::Helper.default.server_info[:build_type]
+              else
+                'NA'
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end

ee/lib/gitlab/usage/metrics/instrumentations/advanced_search/distribution_metric.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module Usage
+    module Metrics
+      module Instrumentations
+        module AdvancedSearch
+          class DistributionMetric < GenericMetric
+            value do
+              if ::Gitlab::CurrentSettings.elasticsearch_indexing?
+                ::Gitlab::Elastic::Helper.default.server_info[:distribution]
+              else
+                'NA'
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end

ee/lib/gitlab/usage/metrics/instrumentations/advanced_search/lucene_version_metric.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module Usage
+    module Metrics
+      module Instrumentations
+        module AdvancedSearch
+          class LuceneVersionMetric < GenericMetric
+            value do
+              if ::Gitlab::CurrentSettings.elasticsearch_indexing?
+                ::Gitlab::Elastic::Helper.default.server_info[:lucene_version]
+              else
+                'NA'
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end

ee/lib/gitlab/usage/metrics/instrumentations/advanced_search_metric.rb → ee/lib/gitlab/usage/metrics/instrumentations/advanced_search/version_metric.rb

@@ -4,11 +4,15 @@ module Gitlab
   module Usage
     module Metrics
       module Instrumentations
-        class AdvancedSearchMetric < GenericMetric
-          fallback({})
-
-          value do
-            ::Gitlab::Elastic::Helper.default.server_info
+        module AdvancedSearch
+          class VersionMetric < GenericMetric
+            value do
+              if ::Gitlab::CurrentSettings.elasticsearch_indexing?
+                ::Gitlab::Elastic::Helper.default.server_info[:version]
+              else
+                'NA'
+              end
+            end
           end
         end
       end

ee/spec/lib/gitlab/usage/metrics/instrumentations/advanced_search/build_type_metric_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Usage::Metrics::Instrumentations::AdvancedSearch::BuildTypeMetric do
+  let(:mock_es_helper) { instance_double(Gitlab::Elastic::Helper, server_info: { build_type: 'docker' }) }
+
+  before do
+    allow(Gitlab::Elastic::Helper).to receive(:default).and_return(mock_es_helper)
+  end
+
+  it_behaves_like 'a correct instrumented metric value', { data_source: 'system' } do
+    before do
+      expect(mock_es_helper).not_to receive(:server_info)
+    end
+
+    let(:expected_value) { 'NA' }
+  end
+
+  context 'elasticsearch_indexing is enabled' do
+    before do
+      stub_ee_application_setting(elasticsearch_indexing: true)
+    end
+
+    it_behaves_like 'a correct instrumented metric value', { data_source: 'system' } do
+      let(:expected_value) { 'docker' }
+    end
+  end
+end

ee/spec/lib/gitlab/usage/metrics/instrumentations/advanced_search/distribution_metric_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Usage::Metrics::Instrumentations::AdvancedSearch::DistributionMetric do
+  let(:mock_es_helper) { instance_double(Gitlab::Elastic::Helper, server_info: { distribution: 'elasticsearch' }) }
+
+  before do
+    allow(Gitlab::Elastic::Helper).to receive(:default).and_return(mock_es_helper)
+  end
+
+  it_behaves_like 'a correct instrumented metric value', { time_frame: 'all', data_source: 'system' } do
+    before do
+      expect(mock_es_helper).not_to receive(:server_info)
+    end
+
+    let(:expected_value) { 'NA' }
+  end
+
+  context 'elasticsearch_indexing is enabled' do
+    before do
+      stub_ee_application_setting(elasticsearch_indexing: true)
+    end
+
+    it_behaves_like 'a correct instrumented metric value', { time_frame: 'all', data_source: 'system' } do
+      let(:expected_value) { 'elasticsearch' }
+    end
+  end
+end

ee/spec/lib/gitlab/usage/metrics/instrumentations/advanced_search/lucene_version_metric_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Usage::Metrics::Instrumentations::AdvancedSearch::LuceneVersionMetric do
+  let(:mock_es_helper) { instance_double(Gitlab::Elastic::Helper, server_info: { lucene_version: '8.11' }) }
+
+  before do
+    allow(Gitlab::Elastic::Helper).to receive(:default).and_return(mock_es_helper)
+  end
+
+  it_behaves_like 'a correct instrumented metric value', { data_source: 'system' } do
+    before do
+      expect(mock_es_helper).not_to receive(:server_info)
+    end
+
+    let(:expected_value) { 'NA' }
+  end
+
+  context 'elasticsearch_indexing is enabled' do
+    before do
+      stub_ee_application_setting(elasticsearch_indexing: true)
+    end
+
+    it_behaves_like 'a correct instrumented metric value', { data_source: 'system' } do
+      let(:expected_value) { '8.11' }
+    end
+  end
+end

ee/spec/lib/gitlab/usage/metrics/instrumentations/advanced_search/version_metric_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Usage::Metrics::Instrumentations::AdvancedSearch::VersionMetric do
+  let(:mock_es_helper) { instance_double(Gitlab::Elastic::Helper, server_info: { version: '7.17' }) }
+
+  before do
+    allow(Gitlab::Elastic::Helper).to receive(:default).and_return(mock_es_helper)
+  end
+
+  it_behaves_like 'a correct instrumented metric value', { data_source: 'system' } do
+    before do
+      expect(mock_es_helper).not_to receive(:server_info)
+    end
+
+    let(:expected_value) { 'NA' }
+  end
+
+  context 'elasticsearch_indexing is enabled' do
+    before do
+      stub_ee_application_setting(elasticsearch_indexing: true)
+    end
+
+    it_behaves_like 'a correct instrumented metric value', { data_source: 'system' } do
+      let(:expected_value) { '7.17' }
+    end
+  end
+end