# ArtifactCacheManager.java

    /*
     *  Copyright (c) 2005-2011, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
     *
     *  WSO2 Inc. licenses this file to you 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.wso2.carbon.governance.api.cache;

    import java.util.HashMap;
    import java.util.Map;

    public class ArtifactCacheManager {

        private static Map<Integer, ArtifactCache> cacheMap;
        private static ArtifactCacheManager thisInstance = new ArtifactCacheManager();
        private static final Object lock = new Object();
        private static ArtifactCache clientCache = null;

        public static void enableClientCache() {
            clientCache = new ArtifactCache();
        }

        public static ArtifactCacheManager getCacheManager() {
            return thisInstance;
        }

        private ArtifactCacheManager() {
            cacheMap = new HashMap<Integer, ArtifactCache>();
        }

        public void addTenantArtifactCache(ArtifactCache cache,int tenantId) {
            synchronized (lock) {
                cacheMap.put(tenantId, cache);
            }
        }

        public ArtifactCache getTenantArtifactCache(int tenantId) {
            if (clientCache != null) {
                return clientCache;
            }
            synchronized (lock) {
                return cacheMap.get(tenantId);
            }
        }

        public void removeTenantArtifactCache(int tenantId) {
            synchronized (lock) {
                cacheMap.get(tenantId).invalidateCache();
                cacheMap.remove(tenantId);
            }
        }

    }