shutdown jgit workqueue, when context is destroyed

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/GitWorkQueueShutdownListener.java

@@ -0,0 +1,26 @@
+package sonia.scm.repository;
+
+import org.eclipse.jgit.lib.internal.WorkQueue;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import sonia.scm.plugin.Extension;
+
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+
+@Extension
+public class GitWorkQueueShutdownListener implements ServletContextListener {
+
+  private static final Logger LOG = LoggerFactory.getLogger(GitWorkQueueShutdownListener.class);
+
+  @Override
+  public void contextInitialized(ServletContextEvent sce) {
+
+  }
+
+  @Override
+  public void contextDestroyed(ServletContextEvent sce) {
+    LOG.warn("shutdown jGit WorkQueue executor");
+    WorkQueue.getExecutor().shutdown();
+  }
+}