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.

1 files changed, 16 insertions, 0 deletions

diff --git a/db/migrate/20180101160629_create_prometheus_metrics.rb b/db/migrate/20180101160629_create_prometheus_metrics.rb
new file mode 100644
index 00000000000..da6371084cb
--- /dev/null
+++ b/db/migrate/20180101160629_create_prometheus_metrics.rb
@@ -0,0 +1,16 @@
+class CreatePrometheusMetrics < ActiveRecord::Migration
+  DOWNTIME = false
+
+  def change
+    create_table :prometheus_metrics do |t|
+      t.references :project, index: true, foreign_key: { on_delete: :cascade }, null: false
+      t.string :title, null: false
+      t.string :query, null: false
+      t.string :y_label
+      t.string :unit
+      t.string :legend
+      t.integer :group, null: false, index: true
+      t.timestamps_with_timezone null: false
+    end
+  end
+end