sonar refactorings

mangooio-core/src/main/java/io/mangoo/cache/CacheProvider.java

@@ -14,6 +14,7 @@
 import io.mangoo.enums.CacheType;
 import io.mangoo.enums.Default;
 import io.mangoo.enums.Key;
+import io.mangoo.exceptions.MangooCacheException;
 import io.mangoo.interfaces.MangooCache;
 
 /**
@@ -44,15 +45,15 @@ public CacheProvider(Config config, Injector injector) {
     }
 
     private Class<? extends MangooCache> getCache(CacheType cacheType) {
-        Class<? extends MangooCache> mangooCache;
+        Class<? extends MangooCache> cache;
         try {
-            mangooCache = Class.forName(cacheType.getClassName()).asSubclass(MangooCache.class);
-            LOG.info("Using {} as implementation for Cache.",  mangooCache);
+            cache = Class.forName(cacheType.getClassName()).asSubclass(MangooCache.class);
+            LOG.info("Using {} as implementation for Cache.",  cache);
         } catch (ClassNotFoundException | ClassCastException e) {
-            throw new RuntimeException("Failed to initialize cache implementation", e);
+            throw new MangooCacheException("Failed to initialize cache implementation", e);
         }
 
-        return mangooCache;
+        return cache;
     }
 
     @Override

mangooio-core/src/main/java/io/mangoo/exceptions/MangooCacheException.java

@@ -0,0 +1,14 @@
+package io.mangoo.exceptions;
+
+/**
+ * 
+ * @author svenkubiak
+ *
+ */
+public class MangooCacheException extends RuntimeException {
+    private static final long serialVersionUID = -4928845472170479321L;
+
+    public MangooCacheException(String message, Exception e){
+        super(message, e);
+    }
+}