yahoo#7 db group name case issue when saving db credential

Author: xrao

myperf/src/main/java/com/yahoo/dba/perf/myperf/meta/MetaDB.java

@@ -717,7 +717,7 @@ public void upsertDBCredential(DBCredential cred)
 	  {
 	    pstmt = conn.prepareStatement(sql2);
 		pstmt.setString(1, cred.getAppUser());
-		pstmt.setString(2, cred.getDbGroupName());
+		pstmt.setString(2, cred.getDbGroupName().toLowerCase());
 		pstmt.setString(3, cred.getUsername());
 		pstmt.setString(4, keyTool.encrypt(pString));
 		pstmt.execute();

myperf/src/main/java/com/yahoo/dba/perf/myperf/springmvc/DbController.java

@@ -33,8 +33,12 @@ private DBInstanceInfo parseRequest(HttpServletRequest request)
   {
     DBInstanceInfo db = new DBInstanceInfo();
 	db.setDbType(request.getParameter("dbtype"));
-	db.setDbGroupName(request.getParameter("dbGroupName"));
-	db.setHostName(request.getParameter("hostName"));
+	String grp = request.getParameter("dbGroupName");
+	if(grp != null)grp = grp.trim().toLowerCase();
+	db.setDbGroupName(grp);
+	String host = request.getParameter("hostName");
+	if(host != null)host = host.trim().toLowerCase();
+	db.setHostName(host);
 	db.setPort(request.getParameter("port"));
 	db.setDatabaseName(request.getParameter("databaseName"));
 	db.setUseTunneling("1".equals(request.getParameter("useTunneling")));

myperf/src/main/java/com/yahoo/dba/perf/myperf/springmvc/VarhistoryController.java

@@ -140,7 +140,8 @@ else if(key.startsWith("-"))
 					rList.addRow(row);			  
 
 				}
-			} 
+			}
+			if(ch !=  null)
 			{
 				ConfigBlock cb = ch.getStartingConfig();
 
@@ -170,6 +171,10 @@ else if(key.startsWith("-"))
 					rList.addRow(row);
 				}
 
+			}else
+			{
+				status = Constants.STATUS_BAD;
+				message = "No variable configuration history has been recorded yet.";
 			}
 
 		}catch(Throwable ex)