1 files changed, 40 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/Annotations.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/Annotations.java
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--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/Annotations.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2014 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;
+
+import java.util.Set;
+
+/**
+ * Represents an set of simple key/value string annotations.
+ */
+public interface Annotations {
+
+    /**
+     * Returns the set of keys for available annotations.
+     *
+     * @return annotation keys
+     */
+    Set<String> keys();
+
+    /**
+     * Returns the value of the specified annotation.
+     *
+     * @param key annotation key
+     * @return annotation value
+     */
+    String value(String key);
+
+}