1 files changed, 47 insertions, 0 deletions
diff --git a/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/ecmap/PersistentStore.java b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/ecmap/PersistentStore.java
new file mode 100644
index 00000000..e85987a7
--- /dev/null
+++ b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/ecmap/PersistentStore.java
@@ -0,0 +1,47 @@
+/*
+ * 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.store.ecmap;
+
+import java.util.Map;
+
+/**
+ * A persistent store for an eventually consistent map.
+ */
+interface PersistentStore<K, V> {
+
+    /**
+     * Read the contents of the disk into the given maps.
+     *
+     * @param items items map
+     */
+    void readInto(Map<K, MapValue<V>> items);
+
+    /**
+     * Updates a key,value pair in the persistent store.
+     *
+     * @param key the key
+     * @param value the value
+     */
+    void update(K key, MapValue<V> value);
+
+    /**
+     * Removes a key from persistent store.
+     *
+     * @param key the key to remove
+     */
+    void remove(K key);
+}