[ONOS-7818] Implement a device behaviour to get table statistics. Make FlowRuleDriverProvider periodically call FlowRuleProviderService.pushTableStatistics().
Change-Id: Ife2b67b8c6c3582281704afe6f9a90538afbc798
diff --git a/core/api/src/main/java/org/onosproject/net/behaviour/TableStatisticsDiscovery.java b/core/api/src/main/java/org/onosproject/net/behaviour/TableStatisticsDiscovery.java
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index 0000000..84e6c2b
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+++ b/core/api/src/main/java/org/onosproject/net/behaviour/TableStatisticsDiscovery.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018-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 org.onosproject.net.flow.TableStatisticsEntry;
+import java.util.Collection;
+
+/**
+ * Behaviour capable of retrieving table statistics from device.
+ */
+public interface TableStatisticsDiscovery extends HandlerBehaviour {
+
+ /**
+ * Returns statistics for all match-action tables currently defined by the device forwarding pipeline.
+ *
+ * @return a list of tableStatisticEntry
+ */
+ Collection<TableStatisticsEntry> getTableStatistics();
+
+}