presence_message.rb in ably-rest-1.0.0

- old
+ new

@@ -121,11 +121,10 @@
       as_json(*args).tap do |presence_message|
         decode_binary_data_before_to_json presence_message
       end.to_json
     end
 
-
     # Assign this presence message to a ProtocolMessage before delivery to the Ably system
     # @api private
     def assign_to_protocol_message(protocol_message)
       @protocol_message = protocol_message
     end
@@ -141,9 +140,22 @@
     # @return [Ably::Models::ProtocolMessage]
     # @api private
     def protocol_message
       raise RuntimeError, 'Presence Message is not yet published with a ProtocolMessage. ProtocolMessage is nil' if @protocol_message.nil?
       @protocol_message
+    end
+
+    # Create a static shallow clone of this object with the optional attributes to overide existing values
+    # Shallow clones have no dependency on the originating ProtocolMessage as all field values are stored as opposed to calculated
+    # Clones are useful when the original PresenceMessage needs to be mutated, such as storing in a PresenceMap with action :present
+    def shallow_clone(new_attributes = {})
+      new_attributes = IdiomaticRubyWrapper(new_attributes.clone.freeze, stop_at: [:data])
+
+      self.class.new(attributes.to_hash.merge(
+        id: new_attributes[:id] || id,
+        connection_id: new_attributes[:connection_id] || connection_id,
+        timestamp: new_attributes[:timestamp] || as_since_epoch(timestamp)
+      ).merge(new_attributes.to_hash))
     end
 
     private
     def raw_hash_object
       @raw_hash_object