ECLinkStore: LinkStore based on EventuallyConsistentMap (disabled right now)

Change-Id: Ib271ad6da90eb8b4d39db160e13c84b7bb695c9b

+/*
+ * 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.link.impl;
+
+import java.util.Objects;
+
+import org.onosproject.net.provider.ProviderId;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Encapsulation of a provider supplied key.
+ *
+ * @param <K> key
+ */
+public class Provided<K> {
+    private final K key;
+    private final ProviderId providerId;
+
+    public Provided(K key, ProviderId providerId) {
+        this.key = key;
+        this.providerId = providerId;
+    }
+
+    public ProviderId providerId() {
+        return providerId;
+    }
+
+    public K key() {
+        return key;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(key, providerId);
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other instanceof Provided) {
+            Provided<K> that = (Provided) other;
+            return Objects.equals(key, that.key) &&
+                    Objects.equals(providerId, that.providerId);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("key", key)
+                .add("providerId", providerId)
+                .toString();
+    }
+}