[isis] branch master updated: ISIS-2158: warn when IsisWebAppContextInitializer tries startup twice

[ah...@apache.org]

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ahuber pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/isis.git


The following commit(s) were added to refs/heads/master by this push:
     new 9751da2  ISIS-2158: warn when IsisWebAppContextInitializer tries startup twice
9751da2 is described below

commit 9751da22d0c624a5069f266097b7a3e4c7d730bb
Author: Andi Huber <ah...@apache.org>
AuthorDate: Sun Jan 12 14:25:54 2020 +0100

    ISIS-2158: warn when IsisWebAppContextInitializer tries startup twice
---
 .../isis/core/webapp/webappctx/IsisWebAppContextInitializer.java     | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/core/webapp/src/main/java/org/apache/isis/core/webapp/webappctx/IsisWebAppContextInitializer.java b/core/webapp/src/main/java/org/apache/isis/core/webapp/webappctx/IsisWebAppContextInitializer.java
index 7a1d226..9d9c13f 100644
--- a/core/webapp/src/main/java/org/apache/isis/core/webapp/webappctx/IsisWebAppContextInitializer.java
+++ b/core/webapp/src/main/java/org/apache/isis/core/webapp/webappctx/IsisWebAppContextInitializer.java
@@ -19,7 +19,6 @@
 package org.apache.isis.core.webapp.webappctx;
 
 import java.util.EventListener;
-import java.util.concurrent.atomic.LongAdder;
 
 import javax.inject.Inject;
 import javax.servlet.ServletContext;
@@ -71,8 +70,10 @@ public class IsisWebAppContextInitializer implements ServletContextInitializer {
     @Override
     public void onStartup(ServletContext servletContext) throws ServletException {
 
-        // onStartup(...) must be a one shot, otherwise just ignore
+        // onStartup(...) must be a one shot, otherwise ignore with warning
         if(!oneshot.shoot()) {
+            log.warn("Spring tries to startup this initializer more than once."
+                    + " This is most likely a Spring configuration issue, check your bootstrapping setup.");
             return;
         }