SEBA-640 IgmpProxy should use distributed storage infrastructure of ONOS

Change-Id: I4b1c4d326a5501e9c0e046e3ee8d973ca5f73d70
diff --git a/api/src/main/java/org/opencord/igmpproxy/GroupMemberIdSerializer.java b/api/src/main/java/org/opencord/igmpproxy/GroupMemberIdSerializer.java
new file mode 100644
index 0000000..370148a
--- /dev/null
+++ b/api/src/main/java/org/opencord/igmpproxy/GroupMemberIdSerializer.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.opencord.igmpproxy;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.Serializer;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import org.onlab.packet.Ip4Address;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+
+/**
+ * Custom serializer for {@link GroupMemberId}.
+ */
+public class GroupMemberIdSerializer extends Serializer<GroupMemberId> {
+    /**
+     * Creates serializer instance.
+     */
+    public GroupMemberIdSerializer() {
+        // non-null, immutable
+        super(false, true);
+    }
+
+    @Override
+    public void write(Kryo kryo, Output output, GroupMemberId groupMemberId) {
+        output.writeString(groupMemberId.getDeviceId().toString());
+        kryo.writeClassAndObject(output, groupMemberId.getGroupIp());
+        kryo.writeClassAndObject(output, groupMemberId.getPortNum());
+    }
+
+    @Override
+    public GroupMemberId read(Kryo kryo, Input input, Class<GroupMemberId> aClass) {
+        DeviceId deviceId = DeviceId.deviceId(input.readString());
+        Ip4Address groupIp = (Ip4Address) kryo.readClassAndObject(input);
+        PortNumber portNum = (PortNumber) kryo.readClassAndObject(input);
+        return GroupMemberId.of(groupIp, deviceId, portNum);
+    }
+}