Sonar bug fixes from CADI

Change-Id: I6ab3235ea4afa25d85f43c12259c6d1617d403eb
Issue-ID: DMAAP-1016
Signed-off-by: efiacor <fiachra.corcoran@est.tech>
diff --git a/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/NodeServlet.java b/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/NodeServlet.java
index 93e901f..34c0f5a 100644
--- a/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/NodeServlet.java
+++ b/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/NodeServlet.java
@@ -27,14 +27,20 @@
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
 import org.apache.log4j.Logger;
+import org.jetbrains.annotations.Nullable;
 import org.onap.dmaap.datarouter.node.eelf.EelfMsgs;
 import org.slf4j.MDC;
 
-import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import java.io.*;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Writer;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -43,10 +49,6 @@
 
 import static org.onap.dmaap.datarouter.node.NodeUtils.sendResponseError;
 
-import org.jetbrains.annotations.Nullable;
-
-import static org.onap.dmaap.datarouter.node.NodeUtils.*;
-
 /**
  * Servlet for handling all http and https requests to the data router node
  * <p>
@@ -64,7 +66,7 @@
     private static NodeConfigManager config;
     private static Pattern MetaDataPattern;
     private static EELFLogger eelflogger = EELFManager.getInstance().getLogger(NodeServlet.class);
-    private boolean isAAFFeed = false;
+    private static boolean isAAFFeed = false;
     private final Delivery delivery;
 
     static {
diff --git a/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/DRProvCadiFilter.java b/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/DRProvCadiFilter.java
index fb8b072..688a32f 100644
--- a/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/DRProvCadiFilter.java
+++ b/datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/utils/DRProvCadiFilter.java
@@ -48,19 +48,9 @@
 
     @Override
     public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
-        HttpServletRequest httpRequest = null;
-        HttpServletResponse httpResponse = null;
-        //cadi code
-        try {
-            httpRequest = (HttpServletRequest) request;
-            httpResponse = (HttpServletResponse) response;
-        } catch (ClassCastException e) {
-            try {
-                throw new ServletException("Only serving HTTP today", e);
-            } catch (ServletException e1) {
-                intlogger.error("PROV7001 DRProvCadiFilter.doFilter: ", e1);
-            }
-        }
+        HttpServletRequest httpRequest = (HttpServletRequest) request;
+        HttpServletResponse httpResponse = (HttpServletResponse) response;
+
         EventLogRecord elr = new EventLogRecord(httpRequest);
         String excludeAAF = httpRequest.getHeader(BaseServlet.EXCLUDE_AAF_HEADER);//send this param value as true, if want to add legacy feed/subscriber in AAF env