1 files changed, 34 insertions, 0 deletions
diff --git a/lib/gitlab/metrics/dashboard/stages/variable_endpoint_inserter.rb b/lib/gitlab/metrics/dashboard/stages/variable_endpoint_inserter.rb
new file mode 100644
index 00000000000..20e7fe477e5
--- /dev/null
+++ b/lib/gitlab/metrics/dashboard/stages/variable_endpoint_inserter.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Metrics
+    module Dashboard
+      module Stages
+        class VariableEndpointInserter < BaseStage
+          VARIABLE_TYPE_METRIC_LABEL_VALUES = 'metric_label_values'
+
+          def transform!
+            raise Errors::DashboardProcessingError.new(_('Environment is required for Stages::VariableEndpointInserter')) unless params[:environment]
+
+            for_variables do |variable_name, variable|
+              if variable.is_a?(Hash) && variable[:type] == VARIABLE_TYPE_METRIC_LABEL_VALUES
+                variable[:options][:prometheus_endpoint_path] = endpoint_for_variable(variable.dig(:options, :series_selector))
+              end
+            end
+          end
+
+          private
+
+          def endpoint_for_variable(series_selector)
+            Gitlab::Routing.url_helpers.prometheus_api_project_environment_path(
+              project,
+              params[:environment],
+              proxy_path: ::Prometheus::ProxyService::PROMETHEUS_SERIES_API,
+              match: Array(series_selector)
+            )
+          end
+        end
+      end
+    end
+  end
+end