/*
 * Copyright 2010-2011 Ning, Inc.
 * Copyright 2014-2015 Groupon, Inc
 * Copyright 2014-2015 The Billing Project, LLC
 *
 * The Billing Project 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.killbill.billing.util.glue;

import java.io.IOException;

import javax.sql.DataSource;

import org.killbill.billing.platform.api.KillbillConfigSource;
import org.killbill.commons.embeddeddb.EmbeddedDB;
import org.killbill.commons.locker.GlobalLocker;
import org.killbill.commons.locker.memory.MemoryGlobalLocker;
import org.killbill.commons.locker.mysql.MySqlGlobalLocker;
import org.killbill.commons.locker.postgresql.PostgreSQLGlobalLocker;

import com.google.inject.Provides;
import com.google.inject.Singleton;

public class GlobalLockerModule extends KillBillModule {

    public GlobalLockerModule(final KillbillConfigSource configSource) {
        super(configSource);
    }

    @Provides
    @Singleton
    // Note: we need to inject the pooled DataSource here, not the (direct) one from EmbeddedDB
    protected GlobalLocker provideGlobalLocker(final DataSource dataSource, final EmbeddedDB embeddedDB) throws IOException {
        if (EmbeddedDB.DBEngine.MYSQL.equals(embeddedDB.getDBEngine())) {
            return new MySqlGlobalLocker(dataSource);
        } else if (EmbeddedDB.DBEngine.POSTGRESQL.equals(embeddedDB.getDBEngine())) {
            return new PostgreSQLGlobalLocker(dataSource);
        } else {
            return new MemoryGlobalLocker();
        }
    }

    @Override
    protected void configure() {
    }
}