From: Kai Moritz <kai@juplo.de>
Date: Thu, 30 Jun 2022 16:53:46 +0000 (+0200)
Subject: splitter: 1.0.0-vanilla-kafka - Fixed shutdown
X-Git-Tag: wip-integration-xml~11
X-Git-Url: https://juplo.de/gitweb/?p=demos%2Fkafka%2Fwordcount;a=commitdiff_plain;h=a3144e93ad95a87cfb33d261c2f6eb67062734c1

splitter: 1.0.0-vanilla-kafka - Fixed shutdown

* The shutdown was blocked, because tSplitterStreamProcessor.stop()
  was called twice.
* The second time, it could no longer reach the cluster, hence, blocking
  the shutdown process.
---

diff --git a/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java b/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java
index fabae8f..0eafbda 100644
--- a/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java
+++ b/src/main/java/de/juplo/kafka/wordcount/splitter/SplitterStreamProcessor.java
@@ -254,6 +254,11 @@ public class SplitterStreamProcessor implements Runnable
   public void stop()
   {
     log.info("Shutdown requested...");
+    if (stopped)
+    {
+      log.warn("Ignoring request: already stopped!");
+      return;
+    }
     stopped = true;
     consumer.wakeup();
     running.lock();