Adds logging and proper header with licence

Project: http://git-wip-us.apache.org/repos/asf/struts/repo
Commit: http://git-wip-us.apache.org/repos/asf/struts/commit/2b150d87
Tree: http://git-wip-us.apache.org/repos/asf/struts/tree/2b150d87
Diff: http://git-wip-us.apache.org/repos/asf/struts/diff/2b150d87

Branch: refs/heads/master
Commit: 2b150d87759d08cde08aa90ab78d28946836c7f8
Parents: 7bce8ef
Author: Lukasz Lenart <lukaszlen...@apache.org>
Authored: Tue Dec 23 21:48:43 2014 +0100
Committer: Lukasz Lenart <lukaszlen...@apache.org>
Committed: Tue Dec 23 21:48:43 2014 +0100

----------------------------------------------------------------------
 .../struts2/sitemesh/StrutsSiteMeshFactory.java | 32 ++++++++++++++++++--
 1 file changed, 29 insertions(+), 3 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/struts/blob/2b150d87/plugins/sitemesh/src/main/java/org/apache/struts2/sitemesh/StrutsSiteMeshFactory.java
----------------------------------------------------------------------
diff --git 
a/plugins/sitemesh/src/main/java/org/apache/struts2/sitemesh/StrutsSiteMeshFactory.java
 
b/plugins/sitemesh/src/main/java/org/apache/struts2/sitemesh/StrutsSiteMeshFactory.java
index 29eb052..96405fb 100644
--- 
a/plugins/sitemesh/src/main/java/org/apache/struts2/sitemesh/StrutsSiteMeshFactory.java
+++ 
b/plugins/sitemesh/src/main/java/org/apache/struts2/sitemesh/StrutsSiteMeshFactory.java
@@ -1,15 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
 package org.apache.struts2.sitemesh;
 
 import com.opensymphony.module.sitemesh.Config;
 import com.opensymphony.module.sitemesh.factory.DefaultFactory;
 import com.opensymphony.xwork2.ActionContext;
+import com.opensymphony.xwork2.util.logging.Logger;
+import com.opensymphony.xwork2.util.logging.LoggerFactory;
 import org.apache.commons.lang3.ObjectUtils;
 import org.apache.struts2.ServletActionContext;
 import org.apache.struts2.StrutsStatics;
 
-
 public class StrutsSiteMeshFactory extends DefaultFactory {
 
+    private static final Logger LOG = 
LoggerFactory.getLogger(StrutsSiteMeshFactory.class);
+
     public StrutsSiteMeshFactory(Config config) {
         super(config);
     }
@@ -23,9 +44,14 @@ public class StrutsSiteMeshFactory extends DefaultFactory {
     }
 
     private boolean isInsideActionTag() {
-        if(ActionContext.getContext() == null)
-               return false;
+        if(ActionContext.getContext() == null) {
+            if (LOG.isTraceEnabled()) {
+                LOG.trace("ActionContext is null! Not a user request?");
+            }
+            return false;
+        }
         Object attribute = 
ServletActionContext.getRequest().getAttribute(StrutsStatics.STRUTS_ACTION_TAG_INVOCATION);
         return (Boolean) ObjectUtils.defaultIfNull(attribute, Boolean.FALSE);
     }
+
 }

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