DPL: prototype for getting CCDB Metadata

Framework/Core/include/Framework/InputRecord.h

@@ -40,6 +40,9 @@
 namespace o2::framework
 {
 
+// Wrapper class to get CCDB metadata
+struct CCDBMetadataExtractor{};
+
 struct InputSpec;
 class InputSpan;
 class CallbackService;
@@ -461,6 +464,14 @@ class InputRecord
     }
   }
 
+  template <typename T = DataRef, typename R>
+  std::map<std::string, std::string> &get(R binding, int part = 0) const
+    requires std::same_as<T, CCDBMetadataExtractor>
+  {
+    // FIXME: needs proper implementation by Ruben
+    return getRef(binding, part);
+  }
+
   /// Helper method to be used to check if a given part of the InputRecord is present.
   [[nodiscard]] bool isValid(std::string const& s) const
   {