/*******************************************************************************
 * Copyright 2016-2017 ZTE, Inc. and others.
 * 
 * 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.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());
    }


}