span.rb in opentelemetry-sdk-0.17.0

- old
+ new

@@ -131,11 +131,11 @@
         # @param [optional Time] timestamp Optional timestamp for the event.
         #
         # @return [self] returns itself
         def add_event(name, attributes: nil, timestamp: nil)
           super
-          event = Event.new(name: name, attributes: attributes, timestamp: timestamp || Time.now)
+          event = Event.new(name: name, attributes: truncate_attribute_values(attributes), timestamp: timestamp || Time.now)
 
           @mutex.synchronize do
             if @ended
               OpenTelemetry.logger.warn('Calling add_event on an ended Span.')
             else
@@ -314,10 +314,19 @@
         def trim_span_attributes(attrs)
           return if attrs.nil?
 
           excess = attrs.size - @trace_config.max_attributes_count
           excess.times { attrs.shift } if excess.positive?
+          truncate_attribute_values(attrs)
           nil
+        end
+
+        def truncate_attribute_values(attrs)
+          return if attrs.nil?
+
+          max_attributes_length = @trace_config.max_attributes_length
+          attrs.each { |key, value| attrs[key] = OpenTelemetry::Common::Utilities.truncate(value, max_attributes_length) } if max_attributes_length
+          attrs
         end
 
         def trim_links(links, max_links_count, max_attributes_per_link) # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
           # Fast path (likely) common cases.
           return nil if links.nil?