Restructuring the form of REST API deployment to provide
for security of app's REST APIs and for consistency of
exception mappers and JSON writer.

Change-Id: Id318372bf62f82ed974355c05e7fe64e0fbfc0c5
diff --git a/utils/rest/src/main/java/org/onlab/rest/exceptions/BadRequestMapper.java b/utils/rest/src/main/java/org/onlab/rest/exceptions/BadRequestMapper.java
new file mode 100644
index 0000000..10cbbea
--- /dev/null
+++ b/utils/rest/src/main/java/org/onlab/rest/exceptions/BadRequestMapper.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2014-2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onlab.rest.exceptions;
+
+import javax.ws.rs.core.Response;
+import javax.ws.rs.ext.Provider;
+import java.io.IOException;
+
+/**
+ * Mapper for IO exceptions to the BAD_REQUEST response code.
+ */
+@Provider
+public class BadRequestMapper extends AbstractMapper<IOException> {
+    @Override
+    protected Response.Status responseStatus() {
+        return Response.Status.BAD_REQUEST;
+    }
+}