SEBA-640 IgmpProxy should use distributed storage infrastructure of ONOS

Change-Id: I4b1c4d326a5501e9c0e046e3ee8d973ca5f73d70
diff --git a/app/src/main/java/org/opencord/igmpproxy/impl/SingleStateMachineSerializer.java b/app/src/main/java/org/opencord/igmpproxy/impl/SingleStateMachineSerializer.java
new file mode 100644
index 0000000..5cc255d
--- /dev/null
+++ b/app/src/main/java/org/opencord/igmpproxy/impl/SingleStateMachineSerializer.java
@@ -0,0 +1,57 @@
+/*
+ * 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.impl;
+
+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.PortNumber;
+import org.opencord.igmpproxy.statemachine.StateMachineId;
+
+/**
+ * Custom serializer for {@link SingleStateMachine}.
+ */
+public class SingleStateMachineSerializer extends Serializer<SingleStateMachine> {
+    /**
+     * Creates serializer instance.
+     */
+    public SingleStateMachineSerializer() {
+        // non-null, immutable
+        super(false, true);
+    }
+
+    @Override
+    public void write(Kryo kryo, Output output, SingleStateMachine singleStateMachine) {
+        kryo.writeClassAndObject(output, singleStateMachine.getStateMachineId());
+        kryo.writeClassAndObject(output, singleStateMachine.getSrcIp());
+        kryo.writeClassAndObject(output, singleStateMachine.getUpLinkPort());
+        kryo.writeClassAndObject(output, singleStateMachine.getTimeOut());
+        kryo.writeObject(output, singleStateMachine.currentState());
+    }
+
+    @Override
+    public SingleStateMachine read(Kryo kryo, Input input, Class<SingleStateMachine> aClass) {
+        StateMachineId stateMachineId = (StateMachineId) kryo.readClassAndObject(input);
+        Ip4Address srcIp = (Ip4Address) kryo.readClassAndObject(input);
+        PortNumber uplinkPort = (PortNumber) kryo.readClassAndObject(input);
+        Integer timeout = (Integer) kryo.readClassAndObject(input);
+        int currentState = kryo.readObject(input, int.class);
+        return new SingleStateMachine(stateMachineId, srcIp, uplinkPort, currentState, timeout);
+    }
+
+}