feat/58 - improve Backpressure algorithm

amqp/service/amq_message_handler.py

@@ -124,10 +124,10 @@ class DataMessageHandler:
         :return: DataResponse
         """
         # Increment the counter for parallel executions and check resource availability
-        self.backpressure_handler.increase_parallel_executions()
+        self.backpressure_handler.increase_current_load()
         await self.backpressure_handler.check_overload_condition()
         logging_info(
-            f"PARALLEL: Current Capacity [{self.backpressure_handler.current_parallel_executions}] of [{self.backpressure_handler.parallel_workers}]"
+            f"PARALLEL: Current Capacity [{self.backpressure_handler.current_load}] of [{self.backpressure_handler.maximum_load}]"
         )
         if message.reply_to:
             self.reply_to = message.reply_to
@@ -155,7 +155,7 @@ class DataMessageHandler:
         except Exception as e:
             logging_error(f"Request handler: {e}")
 
-        self.backpressure_handler.decrease_parallel_executions()
+        self.backpressure_handler.decrease_current_load()
         await self.backpressure_handler.check_overload_condition()
 
     async def reconstitute_data_message(
@@ -208,12 +208,12 @@ class DataMessageHandler:
         #             map_as_string(amq_message.trace_info()), context_with_span, context)
 
     def record_duration(self, start, delivery_tag):
-        global last_data_message_time
-        last_data_message_time = time.time()
+        global last_backpressure_event_time
+        last_backpressure_event_time = time.time()
         logging_info(
             "######[%s] Done, single ACK: %sms.",
             delivery_tag,
-            last_data_message_time - start,
+            last_backpressure_event_time - start,
         )
 
     async def send_reply(self, reply_to: str, response: DataResponse):