ONOS-3758 restructuring driver module with sub-modules for different drivers

Change-Id: I3c65d19be87066448655610abf9d8b89385a4141
diff --git a/drivers/ciena/src/main/java/org/onosproject/drivers/ciena/CienaDriversLoader.java b/drivers/ciena/src/main/java/org/onosproject/drivers/ciena/CienaDriversLoader.java
new file mode 100644
index 0000000..13a6d93
--- /dev/null
+++ b/drivers/ciena/src/main/java/org/onosproject/drivers/ciena/CienaDriversLoader.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2016 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.onosproject.drivers.ciena;
+
+import org.apache.felix.scr.annotations.Component;
+import org.onosproject.net.driver.AbstractDriverLoader;
+
+import java.io.InputStream;
+
+/**
+ * Loader for Ciena device drivers from specific xml.
+ */
+@Component(immediate = true)
+public class CienaDriversLoader extends AbstractDriverLoader {
+
+    private static final String DRIVERS_XML = "/ciena-drivers.xml";
+
+    @Override
+    protected InputStream loadXMLDriversStream() {
+        return getClassLoaderInstance().getResourceAsStream(DRIVERS_XML);
+    }
+
+    @Override
+    protected ClassLoader getClassLoaderInstance() {
+        return getClass().getClassLoader();
+    }
+}