[SEBA-144] Operational Status DHCP L2 Relay.
Cherry-picked from dhcpl2relay-1.6
Change-Id: I58aab083152793af36dfd34fa91cd78385fd2ed7
Signed-off-by: Marcos Aurelio Carrero <mcarrero@furukawalatam.com>
diff --git a/app/src/main/java/org/opencord/dhcpl2relay/impl/DhcpL2RelayCountersStore.java b/app/src/main/java/org/opencord/dhcpl2relay/impl/DhcpL2RelayCountersStore.java
new file mode 100644
index 0000000..b79006b
--- /dev/null
+++ b/app/src/main/java/org/opencord/dhcpl2relay/impl/DhcpL2RelayCountersStore.java
@@ -0,0 +1,67 @@
+/*
+ * 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.dhcpl2relay.impl;
+
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * Represents a stored DHCP Relay Counters. A counter entry is defined by the pair <counterClass, counterType>,
+ * where counterClass can be maybe global or subscriber ID and counterType is the DHCP message type.
+ */
+public interface DhcpL2RelayCountersStore {
+
+ String NAME = "DHCP_L2_Relay_stats";
+
+ /**
+ * Init counter values for a given counter class.
+ *
+ * @param counterClass class of counters (global, per subscriber).
+ */
+ void initCounters(String counterClass);
+
+ /**
+ * Creates or updates DHCP L2 Relay counter.
+ *
+ * @param counterClass class of counters (global, per subscriber).
+ * @param counterType name of counter
+ */
+ void incrementCounter(String counterClass, DhcpL2RelayCounters counterType);
+
+ /**
+ * Sets the value of a DHCP L2 Relay counter.
+ *
+ * @param counterClass class of counters (global, per subscriber).
+ * @param counterType name of counter
+ * @param value The value of the counter
+ */
+ void setCounter(String counterClass, DhcpL2RelayCounters counterType, Long value);
+
+ /**
+ * Gets the DHCP L2 Relay counters map.
+ *
+ * @return the DHCP counter map
+ */
+ public Map<DhcpL2RelayCountersIdentifier, AtomicLong> getCountersMap();
+
+ /**
+ * Resets counter values for a given counter class.
+ *
+ * @param counterClass class of counters (global, per subscriber).
+ */
+ void resetCounters(String counterClass);
+}
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