Import common metrics into database.

This MR backports PrometheusMetric model to CE
and adds: common, identifier to figure out what kind of metric is used.

2 files changed, 5 insertions, 2 deletions

diff --git a/lib/gitlab/prometheus/additional_metrics_parser.rb b/lib/gitlab/prometheus/additional_metrics_parser.rb
index bb1172f82a1..a240d090074 100644
--- a/lib/gitlab/prometheus/additional_metrics_parser.rb
+++ b/lib/gitlab/prometheus/additional_metrics_parser.rb
@@ -5,7 +5,7 @@ module Gitlab
       MUTEX = Mutex.new
       extend self
 
-      def load_groups_from_yaml(file_name = 'additional_metrics.yml')
+      def load_groups_from_yaml(file_name)
         yaml_metrics_raw(file_name).map(&method(:group_from_entry))
       end
 
diff --git a/lib/gitlab/prometheus/metric_group.rb b/lib/gitlab/prometheus/metric_group.rb
index e91c6fb2e27..d696a8fc00c 100644
--- a/lib/gitlab/prometheus/metric_group.rb
+++ b/lib/gitlab/prometheus/metric_group.rb
@@ -4,10 +4,13 @@ module Gitlab
       include ActiveModel::Model
 
       attr_accessor :name, :priority, :metrics
+
       validates :name, :priority, :metrics, presence: true
 
       def self.common_metrics
-        AdditionalMetricsParser.load_groups_from_yaml
+        ::PrometheusMetric.common.group_by(&:group_title).map do |name, metrics|
+          MetricGroup.new(name: name, priority: 0, metrics: metrics.map(&:to_query_metric))
+        end
       end
 
       # EE only