--- /dev/null
+/*
+ * Copyright 2020 ZTE Corporation.
+ *
+ * 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.onap.holmes.common.dmaap.store;
+
+import org.jvnet.hk2.annotations.Service;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.inject.Singleton;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Service
+@Singleton
+public class UniqueRequestIdCache extends ConcurrentHashMap<String, String> {
+
+ private static final Logger log = LoggerFactory.getLogger(UniqueRequestIdCache.class);
+
+ @Override
+ public String put(String alarmId, String requestId) {
+ log.info(String.format("<%s:%s> was added into UniqueRequestIdCache.", alarmId, requestId));
+ return super.put(alarmId, requestId);
+ }
+
+ public String remove(String alarmId) {
+ log.info(String.format("<%s> was removed into UniqueRequestIdCache.", alarmId));
+ return super.remove(alarmId);
+ }
+}