Merge pull request #489 from michaelsauter/feature/async-overflow-message

Align buffer overflow erros with sync producer

Author: dasch

lib/kafka/async_producer.rb

@@ -100,7 +100,10 @@ def initialize(sync_producer:, max_queue_size: 1000, delivery_threshold: 0, deli
     def produce(value, topic:, **options)
       ensure_threads_running!
 
-      buffer_overflow(topic) if @queue.size >= @max_queue_size
+      if @queue.size >= @max_queue_size
+        buffer_overflow topic,
+          "Cannot produce to #{topic}, max queue size (#{@max_queue_size} messages) reached"
+      end
 
       args = [value, **options.merge(topic: topic)]
       @queue << [:produce, args]
@@ -148,14 +151,12 @@ def ensure_threads_running!
       @timer_thread ||= Thread.new { @timer.run }
     end
 
-    def buffer_overflow(topic)
+    def buffer_overflow(topic, message)
       @instrumenter.instrument("buffer_overflow.async_producer", {
         topic: topic,
       })
 
-      @logger.error "Cannot produce message to #{topic}, max queue size (#{@max_queue_size}) reached"
-
-      raise BufferOverflow
+      raise BufferOverflow, message
     end
 
     class Timer