Fix obsolete production identifier

This commit replace the obsolete production identifier
by the new environment tier feature.

app/models/deployment.rb

@@ -226,7 +226,7 @@ class Deployment < ApplicationRecord
   end
 
   def update_merge_request_metrics!
-    return unless environment.update_merge_request_metrics? && success?
+    return unless environment.production? && success?
 
     merge_requests = project.merge_requests
                      .joins(:metrics)

app/models/environment.rb

@@ -11,8 +11,6 @@ class Environment < ApplicationRecord
   self.reactive_cache_hard_limit = 10.megabytes
   self.reactive_cache_work_type = :external_dependency
 
-  PRODUCTION_ENVIRONMENT_IDENTIFIERS = %w[prod production].freeze
-
   belongs_to :project, required: true
 
   use_fast_destroy :all_deployments
@@ -251,10 +249,6 @@ class Environment < ApplicationRecord
     last_deployment.try(:created_at)
   end
 
-  def update_merge_request_metrics?
-    PRODUCTION_ENVIRONMENT_IDENTIFIERS.include?(folder_name.downcase)
-  end
-
   def ref_path
     "refs/#{Repository::REF_ENVIRONMENTS}/#{slug}"
   end

changelogs/unreleased/fix-obsolte-production-identifier.yml

+---
+title: Fix inconsistent production environment definition on VSA
+merge_request: 57557
+author:
+type: fixed

doc/user/analytics/value_stream_analytics.md

@@ -103,14 +103,8 @@ In short, the Value Stream Analytics dashboard tracks data related to [GitLab fl
 
 ## How the production environment is identified
 
-Value Stream Analytics identifies production environments by looking for project [environments](../../ci/yaml/README.md#environment) with a name matching any of these patterns:
-
-- `prod` or `prod/*`
-- `production` or `production/*`
-
-These patterns are not case-sensitive.
-
-You can change the name of a project environment in your GitLab CI/CD configuration.
+Value Stream Analytics identifies production environments based on
+[the deployment tier of environments](../../ci/environments/index.md#deployment-tier-of-environments).
 
 ## Example workflow
 

spec/models/deployment_spec.rb

@@ -808,4 +808,30 @@ RSpec.describe Deployment do
       end
     end
   end
+
+  describe '#update_merge_request_metrics!' do
+    let_it_be(:project) { create(:project, :repository) }
+    let(:environment) { build(:environment, environment_tier, project: project) }
+    let!(:deployment) { create(:deployment, :success, project: project, environment: environment) }
+    let!(:merge_request) { create(:merge_request, :simple, :merged_last_month, project: project) }
+
+    context 'with production environment' do
+      let(:environment_tier) { :production }
+
+      it 'updates merge request metrics for production-grade environment' do
+        expect { deployment.update_merge_request_metrics! }
+          .to change { merge_request.reload.metrics.first_deployed_to_production_at }
+          .from(nil).to(deployment.reload.finished_at)
+      end
+    end
+
+    context 'with staging environment' do
+      let(:environment_tier) { :staging }
+
+      it 'updates merge request metrics for production-grade environment' do
+        expect { deployment.update_merge_request_metrics! }
+          .not_to change { merge_request.reload.metrics.first_deployed_to_production_at }
+      end
+    end
+  end
 end

spec/models/environment_spec.rb

@@ -302,6 +302,8 @@ RSpec.describe Environment, :use_clean_rails_memory_store_caching do
       'testing'            | described_class.tiers[:testing]
       'testing-prd'        | described_class.tiers[:testing]
       'acceptance-testing' | described_class.tiers[:testing]
+      'production-test'    | described_class.tiers[:testing]
+      'test-production'    | described_class.tiers[:testing]
       'QC'                 | described_class.tiers[:testing]
       'gstg'               | described_class.tiers[:staging]
       'staging'            | described_class.tiers[:staging]
@@ -315,6 +317,12 @@ RSpec.describe Environment, :use_clean_rails_memory_store_caching do
       'gprd-cny'           | described_class.tiers[:production]
       'production'         | described_class.tiers[:production]
       'Production'         | described_class.tiers[:production]
+      'PRODUCTION'         | described_class.tiers[:production]
+      'Production/eu'      | described_class.tiers[:production]
+      'production/eu'      | described_class.tiers[:production]
+      'PRODUCTION/EU'      | described_class.tiers[:production]
+      'productioneu'       | described_class.tiers[:production]
+      'production/www.gitlab.com' | described_class.tiers[:production]
       'prod'               | described_class.tiers[:production]
       'PROD'               | described_class.tiers[:production]
       'Live'               | described_class.tiers[:production]
@@ -444,31 +452,6 @@ RSpec.describe Environment, :use_clean_rails_memory_store_caching do
     end
   end
 
-  describe '#update_merge_request_metrics?' do
-    {
-      'gprd' => false,
-      'prod' => true,
-      'prod-test' => false,
-      'PROD' => true,
-      'production' => true,
-      'production-test' => false,
-      'PRODUCTION' => true,
-      'production/eu' => true,
-      'PRODUCTION/EU' => true,
-      'production/www.gitlab.com' => true,
-      'productioneu' => false,
-      'Production' => true,
-      'Production/eu' => true,
-      'test-production' => false
-    }.each do |name, expected_value|
-      it "returns #{expected_value} for #{name}" do
-        env = create(:environment, name: name)
-
-        expect(env.update_merge_request_metrics?).to eq(expected_value), "Expected the name '#{name}' to result in #{expected_value}, but it didn't."
-      end
-    end
-  end
-
   describe '#environment_type' do
     subject { environment.environment_type }