PAYARA-1886 Fix NPE race condition when starting server with hazelcas…

…t enabled (#1816)

appserver/payara-appserver-modules/payara-micro-service/src/main/java/fish/payara/appserver/micro/services/PayaraInstanceImpl.java

@@ -1,20 +1,43 @@
 /*
-
- DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
-
- Copyright (c) 2016-2017 Payara Foundation. All rights reserved.
-
- The contents of this file are subject to the terms of the Common Development
- and Distribution License("CDDL") (collectively, the "License").  You
- may not use this file except in compliance with the License.  You can
- obtain a copy of the License at
- https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
- or packager/legal/LICENSE.txt.  See the License for the specific
- language governing permissions and limitations under the License.
-
- When distributing the software, include this License Header Notice in each
- file and include the License file at packager/legal/LICENSE.txt.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright (c) 2016-2017 Payara Foundation and/or its affiliates. All rights reserved.
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * General Public License Version 2 only ("GPL") or the Common Development
+ * and Distribution License("CDDL") (collectively, the "License").  You
+ * may not use this file except in compliance with the License.  You can
+ * obtain a copy of the License at
+ * https://github.com/payara/Payara/blob/master/LICENSE.txt
+ * See the License for the specific
+ * language governing permissions and limitations under the License.
+ *
+ * When distributing the software, include this License Header Notice in each
+ * file and include the License file at glassfish/legal/LICENSE.txt.
+ *
+ * GPL Classpath Exception:
+ * The Payara Foundation designates this particular file as subject to the "Classpath"
+ * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
+ * file that accompanied this code.
+ *
+ * Modifications:
+ * If applicable, add the following below the License Header, with the fields
+ * enclosed by brackets [] replaced by your own identifying information:
+ * "Portions Copyright [year] [name of copyright owner]"
+ *
+ * Contributor(s):
+ * If you wish your version of this file to be governed by only the CDDL or
+ * only the GPL Version 2, indicate your decision by adding "[Contributor]
+ * elects to include this software in this distribution under the [CDDL or GPL
+ * Version 2] license."  If you don't indicate a single choice of license, a
+ * recipient has the option to distribute your version of this file under
+ * either the CDDL, the GPL Version 2 or to extend the choice of license to
+ * its licensees as provided above.  However, if you add GPL Version 2 code
+ * and therefore, elected the GPL Version 2 license, then the option applies
+ * only if the new code is made subject to such option by the copyright
+ * holder.
  */
+
 package fish.payara.appserver.micro.services;
 
 import fish.payara.micro.PayaraInstance;
@@ -211,6 +234,9 @@ public void event(Event event) {
         else if (event.is(Deployment.APPLICATION_LOADED)) {
             if (event.hook() != null && event.hook() instanceof ApplicationInfo) {
                 ApplicationInfo applicationInfo = (ApplicationInfo) event.hook();
+                if (me == null){//race check
+                    initialiseInstanceDescriptor();
+                }
                 me.addApplication(new ApplicationDescriptorImpl(applicationInfo));
                 cluster.getClusteredStore().set(INSTANCE_STORE_NAME, myCurrentID, me);
             }