--- /dev/null
+package org.onap.msb.apiroute.wrapper.queue;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicReference;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class ServiceListCache {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(ServiceListCache.class);
+
+ private final static AtomicReference<Set<String>> serviceNameList4Cache = new AtomicReference<Set<String>>(new HashSet<String>());
+
+ public static Set<String> getLatestServiceNamelist() {
+ return serviceNameList4Cache.get();
+ }
+
+ public static void setLatestServiceNamelist(Set<String> newServicenamelist){
+ serviceNameList4Cache.set(newServicenamelist);
+ LOGGER.info("------current total Watch Service Num :"+ newServicenamelist.size());
+ }
+
+ public synchronized static void removeService(String serviceName){
+
+ Set<String> servicenamelist=serviceNameList4Cache.get();
+ servicenamelist.remove(serviceName);
+ serviceNameList4Cache.set(servicenamelist);
+ LOGGER.info("------current total Watch Service Num :"+ servicenamelist.size());
+ }
+
+
+}