Extract process_one_batch() in SlowQueryWorker.

By extracting the function, we eliminate a redundant sleep
call.

(imported from commit 24d4485019f96ae10e9a00244643b77ff2a7db57)

zerver/worker/queue_processors.py

@@ -213,9 +213,13 @@ class FeedbackBot(QueueProcessingWorker):
 class SlowQueryWorker(QueueProcessingWorker):
     def start(self):
         while True:
-            if settings.ERROR_BOT is None:
+            self.process_one_batch()
+            # Aggregate all slow query messages in 1-minute chunks to avoid message spam
             time.sleep(1 * 60)
-                continue
+
+    def process_one_batch(self):
+        if settings.ERROR_BOT is None:
+            return
 
         slow_queries = self.q.drain_queue("slow_queries", json=True)
 
@@ -228,9 +232,6 @@ class SlowQueryWorker(QueueProcessingWorker):
 
             internal_send_message(settings.ERROR_BOT, "stream", "logs", topic, content)
 
-            # Aggregate all slow query messages in 1-minute chunks to avoid message spam
-            time.sleep(1 * 60)
-
 @assign_queue("message_sender")
 class MessageSenderWorker(QueueProcessingWorker):
     def __init__(self):