Record move counts by status

This ensures we've got more useful metrics available to Prometheus.

app/lib/metrics.rb

@@ -12,7 +12,9 @@ def configure
   end
 
   def record_move_count
-    move_count_gauge.set(Move.unscoped.count)
+    Move.unscoped.group(:status).count.each do |status, count|
+      move_count_gauge.set(count, labels: { status: status })
+    end
   end
 
 private
@@ -25,6 +27,7 @@ def move_count_gauge
     @move_count_gauge ||= registry.gauge(
       :app_move_count_total,
       docstring: 'The total count of the number of moves.',
+      labels: %i[status],
       store_settings: { aggregation: :max },
     )
   end

spec/lib/metrics_spec.rb

@@ -32,12 +32,16 @@
     before do
       allow(move_count_gauge).to receive(:set)
       allow(registry).to receive(:gauge).with(:app_move_count_total, anything).and_return(move_count_gauge)
+
+      create(:move, :booked)
+      create(:move, :requested)
     end
 
     after { instance.record_move_count }
 
-    it 'sets the move count' do
-      expect(move_count_gauge).to receive(:set)
+    it 'sets the move count based on the status' do
+      expect(move_count_gauge).to receive(:set).with(1, labels: { status: 'booked' })
+      expect(move_count_gauge).to receive(:set).with(1, labels: { status: 'requested' })
     end
   end
 end