edu.internet2.middleware.changelogconsumer.googleapps.cache.GoogleCacheManager Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright 2015 Internet2
 * 
 * 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 edu.internet2.middleware.changelogconsumer.googleapps.cache;

import com.google.api.services.directory.model.Group;
import com.google.api.services.directory.model.User;

/**
 * ObjectCache stores objects retrieved from Google to save on the number of API round trips required.
 * Each object type has its own cache and expiration interval. The ObjectCache object (static) to maintain the cache
 * between the ChangeLogConsumer object's (prototype) life cycling.
 *
 * @author John Gasper, Unicon
 */
public class GoogleCacheManager {
    private static Cache googleUsers = new Cache();
    private static Cache googleGroups = new Cache();

    private static final Object usersLock = new Object();
    private static final Object groupsLock = new Object();

    /**
     *
     * @return a Google User cache
     */
    public static Cache googleUsers() {
        synchronized (usersLock) {
            return googleUsers;
        }
    }

    /**
     *
     * @return a Google Group cache
     */
    public static Cache googleGroups() {
        synchronized (groupsLock) {
            return googleGroups;
        }
    }

}