moving meter service to incubator and initial implementation of
meter manager.

Change-Id: I6ef0d9476b58d00b37f7ef156ac7bdacca20185b
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/meter/MeterOperation.java b/incubator/api/src/main/java/org/onosproject/incubator/net/meter/MeterOperation.java
new file mode 100644
index 0000000..ff7e988
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/meter/MeterOperation.java
@@ -0,0 +1,68 @@
+/*
+ * 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.incubator.net.meter;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Representation of an operation on the meter table.
+ */
+public class MeterOperation {
+
+    /**
+     * Tyoe of meter operation.
+     */
+    public enum Type {
+        ADD,
+        REMOVE,
+        MODIFY
+    }
+
+    private final Meter meter;
+    private final Type type;
+
+
+    public MeterOperation(Meter meter, Type type) {
+        this.meter = meter;
+        this.type = type;
+    }
+
+    /**
+     * Returns the type of operation.
+     *
+     * @return type
+     */
+    public Type type() {
+        return type;
+    }
+
+    /**
+     * Returns the meter.
+     *
+     * @return a meter
+     */
+    public Meter meter() {
+        return meter;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("meter", meter)
+                .add("type", type)
+                .toString();
+    }
+}