/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.repo.module;

import org.alfresco.repo.transaction.RetryingTransactionHelper.RetryingTransactionCallback;
import org.alfresco.service.cmr.module.ModuleService;
import org.alfresco.service.transaction.TransactionService;
import org.springframework.extensions.surf.util.AbstractLifecycleBean;
import org.springframework.extensions.surf.util.PropertyCheck;
import org.springframework.context.ApplicationEvent;

/**
 * This component is responsible for ensuring that patches are applied
 * at the appropriate time.
 * 
 * @author Derek Hulley
 */
public class ModuleStarter extends AbstractLifecycleBean
{
    private TransactionService transactionService;
    private ModuleService moduleService;

    /**
     * 
     * @param transactionService        provides the retrying transaction
     */
    public void setTransactionService(TransactionService transactionService)
    {
        this.transactionService = transactionService;
    }

    /**
     * @param moduleService the service that will do the actual work.
     */
    public void setModuleService(ModuleService moduleService)
    {
        this.moduleService = moduleService;
    }

    @Override
    protected void onBootstrap(ApplicationEvent event)
    {
        PropertyCheck.mandatory(this, "moduleService", moduleService);
        RetryingTransactionCallback<Object> startModulesCallback = new RetryingTransactionCallback<Object>()
        {
            public Object execute() throws Throwable
            {
                moduleService.startModules();
                return null;
            }
        };
        transactionService.getRetryingTransactionHelper().doInTransaction(startModulesCallback,
                transactionService.isReadOnly());
    }

    @Override
    protected void onShutdown(ApplicationEvent event)
    {
        // NOOP
    }
}