Fix NPE in report environment for older Coherence versions (#29)

* Fix NPE in report environment for older Coh versions
* Fixup sonarcloud complaint
* update workflow

.github/workflows/test-against-released.yml

@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+#  Copyright (c) 2020, 2022 Oracle and/or its affiliates. All rights reserved.
 #  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 #  This code is free software; you can redistribute it and/or modify it
@@ -44,10 +44,8 @@ jobs:
         version:
           - 14.1.1-0-10
           - 14.1.1-0-9
-          - 21.06.1
-          - 21.12.4
-          - 22.06.1
           - 22.06.2
+          - 22.09
 
     steps:
     - name: Checkout
@@ -63,7 +61,7 @@ jobs:
     - name: Set up JDK 11 for Build
       uses: actions/setup-java@v1
       with:
-        java-version: '11'
+        java-version: '17'
 
     - name: Print Versions
       run: mvn -version && ant -version

coherence-visualvm-plugin/src/main/java/com/oracle/coherence/plugin/visualvm/panel/CoherenceMemberPanel.java

@@ -26,6 +26,7 @@
 package com.oracle.coherence.plugin.visualvm.panel;
 
 
+import com.oracle.coherence.plugin.visualvm.Localization;
 import com.oracle.coherence.plugin.visualvm.helper.GraphHelper;
 import com.oracle.coherence.plugin.visualvm.helper.RenderHelper;
 import com.oracle.coherence.plugin.visualvm.helper.RequestSender;
@@ -636,12 +637,19 @@ public String getMenuItem()
     /**
      * Return a sanitized message to make common errors more meaningful.
      * @param e {@link Exception} to get message from
+     *
      * @return final message
      */
     private String getSanitizedMessage(Exception e)
         {
         String sError = e.getMessage();
-        return sError.contains("name cannot be null") ? "Node no longer available." : sError;
+
+        if (sError == null)
+            {
+            return Localization.getLocalText("LBL_operation_not_available");
+            }
+
+        return sError.contains("name cannot be null") ? Localization.getLocalText("LBL_node_not_available") : sError;
         }
 
     // ----- constants ------------------------------------------------------

coherence-visualvm-plugin/src/main/resources/com/oracle/coherence/plugin/visualvm/Bundle.properties

@@ -126,6 +126,8 @@ LBL_thread_dump_completed=Completed.
 LBL_copy_to_clipboard=Copy contents to Clipboard
 LBL_copied=Data has been copied to the Clipboard.
 LBL_data_saved=Thread Dump has been saved to {0}.
+LBL_operation_not_available=Operation is not available in this version.
+LBL_node_not_available=Node no longer available.
 
 # CoherencePersistencePanel
 LBL_total_active_space=Total Active Persistence Space Used (MB)