[ONOS-7704] device memory/cpu stats for pica8 switch using Switch_Inventory DB
Change-Id: I1956d06ab373119da59561252f5b35561f8f5619
diff --git a/core/api/src/main/java/org/onosproject/net/behaviour/DeviceSystemStatisticsQuery.java b/core/api/src/main/java/org/onosproject/net/behaviour/DeviceSystemStatisticsQuery.java
new file mode 100644
index 0000000..ba34872
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/behaviour/DeviceSystemStatisticsQuery.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2016-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.onosproject.net.behaviour;
+
+import org.onosproject.net.driver.HandlerBehaviour;
+
+import java.util.Optional;
+
+/**
+ * A HandlerBehaviour to get System Stats for the Device.
+ */
+public interface DeviceSystemStatisticsQuery extends HandlerBehaviour {
+ /**
+ * Get System stats available for the device.
+ * @return success or failure
+ */
+
+ Optional<DeviceSystemStats> getDeviceSystemStats();
+}