1 files changed, 37 insertions, 0 deletions
diff --git a/lib/gitlab/instrumentation/redis_payload.rb b/lib/gitlab/instrumentation/redis_payload.rb
new file mode 100644
index 00000000000..69aafffd124
--- /dev/null
+++ b/lib/gitlab/instrumentation/redis_payload.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Instrumentation
+    module RedisPayload
+      include ::Gitlab::Utils::StrongMemoize
+
+      # Fetches payload keys from the lazy payload (this avoids
+      # unnecessary processing of the values).
+      def known_payload_keys
+        to_lazy_payload.keys
+      end
+
+      def payload
+        to_lazy_payload.transform_values do |value|
+          result = value.call
+          result if result > 0
+        end.compact
+      end
+
+      private
+
+      def to_lazy_payload
+        strong_memoize(:to_lazy_payload) do
+          key_prefix = storage_key ? "redis_#{storage_key}" : 'redis'
+
+          {
+            "#{key_prefix}_calls": -> { get_request_count },
+            "#{key_prefix}_duration_s": -> { query_time },
+            "#{key_prefix}_read_bytes": -> { read_bytes },
+            "#{key_prefix}_write_bytes": -> { write_bytes }
+          }.symbolize_keys
+        end
+      end
+    end
+  end
+end