--- /dev/null
+/*\r
+ * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.\r
+ *\r
+ * This program and the accompanying materials are made available under the\r
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
+ * and is available at http://www.eclipse.org/legal/epl-v10.html\r
+ */\r
+package org.opendaylight.controller.sal.core.api;\r
+\r
+import java.util.Collection;\r
+\r
+import org.opendaylight.controller.sal.core.api.Broker.ConsumerSession;\r
+\r
+/**\r
+ * \r
+ * Defines the component of controller and supplies additional metadata. A\r
+ * component of the controller or application supplies a concrete implementation\r
+ * of this interface.\r
+ * \r
+ * A user-implemented component (application) which faciliates the SAL and SAL\r
+ * services to access infrastructure services or providers' functionality.\r
+ * \r
+ * \r
+ */\r
+public interface Consumer {\r
+\r
+ /**\r
+ * Callback signaling initialization of the consumer session to the SAL.\r
+ * \r
+ * The consumer MUST use the session for all communication with SAL or\r
+ * retrieving SAL infrastructure services.\r
+ * \r
+ * This method is invoked by {@link Broker#registerConsumer(Consumer)}\r
+ * \r
+ * @param session\r
+ * Unique session between consumer and SAL.\r
+ */\r
+ public void onSessionInitiated(ConsumerSession session);\r
+\r
+ /**\r
+ * Get a set of implementations of consumer functionality to be registered\r
+ * into system during the consumer registration to the SAL.\r
+ * \r
+ * This method is invoked by {@link Broker#registerConsumer(Consumer)}.\r
+ * \r
+ * @return Set of consumer functionality.\r
+ */\r
+ public Collection<ConsumerFunctionality> getConsumerFunctionality();\r
+\r
+ /**\r
+ * The marker interface for the interfaces describing the consumer\r
+ * functionality contracts.\r
+ * \r
+ * \r
+ */\r
+ public interface ConsumerFunctionality {\r
+\r
+ }\r
+}\r