1 files changed, 58 insertions, 0 deletions
diff --git a/framework/src/onos/openflow/api/src/main/java/org/onosproject/openflow/controller/ExtensionInterpreter.java b/framework/src/onos/openflow/api/src/main/java/org/onosproject/openflow/controller/ExtensionInterpreter.java
new file mode 100644
index 00000000..44b121ac
--- /dev/null
+++ b/framework/src/onos/openflow/api/src/main/java/org/onosproject/openflow/controller/ExtensionInterpreter.java
@@ -0,0 +1,58 @@
+/*
+ * 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.openflow.controller;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.driver.HandlerBehaviour;
+import org.onosproject.net.flow.instructions.ExtensionInstruction;
+import org.onosproject.net.flow.instructions.ExtensionType;
+import org.projectfloodlight.openflow.protocol.OFFactory;
+import org.projectfloodlight.openflow.protocol.action.OFAction;
+
+/**
+ * Interprets extension instructions and converts them to/from OpenFlow objects.
+ */
+@Beta
+public interface ExtensionInterpreter extends HandlerBehaviour {
+
+    /**
+     * Returns true if the given extension instruction is supported by this
+     * driver.
+     *
+     * @param extensionType extension instruction type
+     * @return true if the instruction is supported, otherwise false
+     */
+    boolean supported(ExtensionType extensionType);
+
+    /**
+     * Maps an extension instruction to an OpenFlow action.
+     *
+     * @param factory OpenFlow factory
+     * @param extensionInstruction extension instruction
+     * @return OpenFlow action
+     */
+    OFAction mapInstruction(OFFactory factory, ExtensionInstruction extensionInstruction);
+
+    /**
+     * Maps an OpenFlow action to an extension instruction.
+     *
+     * @param action OpenFlow action
+     * @return extension instruction
+     */
+    ExtensionInstruction mapAction(OFAction action);
+
+}