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/MeterProviderService.java b/incubator/api/src/main/java/org/onosproject/incubator/net/meter/MeterProviderService.java
new file mode 100644
index 0000000..c1dd30cb1
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/meter/MeterProviderService.java
@@ -0,0 +1,49 @@
+/*
+ * 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 org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderService;
+
+import java.util.Collection;
+
+/**
+ * Service through which meter providers can inject information
+ * into the core.
+ */
+public interface MeterProviderService extends ProviderService<MeterProvider> {
+
+    /**
+     * Notifies the core that a meter operaton failed for a
+     * specific reason.
+     * @param operation the failed operation
+     * @param reason the failure reason
+     */
+    void meterOperationFailed(MeterOperation operation,
+                              MeterFailReason reason);
+
+    /**
+     * Pushes the collection of meters observed on the data plane as
+     * well as their associated statistics.
+     *
+     * @param deviceId a device id
+     * @param meterEntries a collection of meter entries
+     */
+    void pushMeterMetrics(DeviceId deviceId,
+                          Collection<Meter> meterEntries);
+
+
+}