Enhancing the driver subsystem to allow retrieving originating data/handler contexts from the behaviours.
Change-Id: I973888190d569e7e147376b5ae4da9d2f2d9c620
diff --git a/core/api/src/main/java/org/onosproject/net/driver/AbstractHandlerBehaviour.java b/core/api/src/main/java/org/onosproject/net/driver/AbstractHandlerBehaviour.java
new file mode 100644
index 0000000..66b21ff
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/driver/AbstractHandlerBehaviour.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 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.onosproject.net.driver;
+
+import static com.google.common.base.Preconditions.checkState;
+
+/**
+ * Base implementation of device driver handler behaviour.
+ */
+public class AbstractHandlerBehaviour
+ extends AbstractBehaviour implements HandlerBehaviour {
+
+ private DriverHandler handler;
+
+ @Override
+ public DriverHandler handler() {
+ return handler;
+ }
+
+ @Override
+ public void setHandler(DriverHandler handler) {
+ checkState(this.handler == null, "Driver handler already set");
+ this.handler = handler;
+ }
+}