appserver/ha/ha-shoal-store/src/main/java/org/shoal/ha/store/ReplicatedBackingStoreFactory.java

/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.shoal.ha.store;


import org.glassfish.ha.store.api.*;
import org.jvnet.hk2.annotations.Service;
import org.shoal.adapter.store.ReplicatedBackingStore;
import org.shoal.adapter.store.StoreableReplicatedBackingStore;
import org.shoal.ha.mapper.KeyMapper;

import java.io.Serializable;
import java.util.Properties;

/**
 * @author Mahesh Kannan
 */
@Service(name="shoal-backing-store-factory")
public class ReplicatedBackingStoreFactory
    implements BackingStoreFactory {

    public ReplicatedBackingStoreFactory()  {
    }

    public ReplicatedBackingStoreFactory(Properties p)  {
    }

    @Override
    public <K extends Serializable, V extends Serializable> BackingStore<K, V> createBackingStore(BackingStoreConfiguration<K, V> conf)
            throws BackingStoreException {

        KeyMapper keyMapper = new GlassFishKeyMapper(conf.getInstanceName(), conf.getClusterName());
        conf.getVendorSpecificSettings().put("key.mapper", keyMapper);

        Class<V> vClazz = conf.getValueClazz();
        if (Storeable.class.isAssignableFrom(vClazz)) {
            StoreableReplicatedBackingStore srbs = new StoreableReplicatedBackingStore();
            srbs.initialize(conf);
            return srbs;
        } else {
            ReplicatedBackingStore<K, V> bStore = new ReplicatedBackingStore<K, V>();
            bStore.initialize(conf);
            System.out.println("GlassFish2ShoalBackingStoreFactory:: CREATED an instance of: " + bStore.getClass().getName());
            return bStore;
        }
    }

    @Override
    public BackingStoreTransaction createBackingStoreTransaction() {
        return new BackingStoreTransaction() {
            @Override
            public void commit() throws BackingStoreException {
            }
        };
    }

}