org.ngrinder.infra.init.DatabaseUpdater.java Source code

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Here is the source code for org.ngrinder.infra.init.DatabaseUpdater.java

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/* 
 * 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 org.ngrinder.infra.init;

import liquibase.database.Database;
import liquibase.database.DatabaseFactory;
import liquibase.database.core.H2ExTypeConverter;
import liquibase.database.jvm.JdbcConnection;
import liquibase.database.typeconversion.TypeConverterFactory;
import liquibase.exception.LiquibaseException;
import liquibase.resource.ClassLoaderResourceAccessor;
import liquibase.sqlgenerator.SqlGeneratorFactory;
import liquibase.sqlgenerator.core.ModifyDataTypeGenerator;
import liquibase.sqlgenerator.core.RenameColumnGenerator;
import org.apache.commons.dbcp.BasicDataSource;
import org.ngrinder.infra.config.Config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ResourceLoaderAware;
import org.springframework.context.annotation.DependsOn;
import org.springframework.core.io.ResourceLoader;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;

import static org.ngrinder.common.util.ExceptionUtils.processException;

/**
 * DB Data Updater. This class is used to update DB automatically when System restarted through log
 * file db.changelog.xml
 *
 * @author Matt
 * @author JunHo Yoon
 * @since 3.0
 */
@Service
@DependsOn("dataSource")
public class DatabaseUpdater implements ResourceLoaderAware {

    @Autowired
    private BasicDataSource dataSource;

    private ResourceLoader resourceLoader;

    private Database getDatabase() {
        try {
            return DatabaseFactory.getInstance()
                    .findCorrectDatabaseImplementation(new JdbcConnection(dataSource.getConnection()));
        } catch (Exception e) {
            throw processException("Error getting database from " + dataSource.getUrl(), e);
        }
    }

    public String getChangeLog() {
        return "ngrinder_datachange_logfile/db.changelog.xml";
    }

    /**
     * Automated updates DB after nGrinder has load with all bean properties.
     *
     * @throws Exception occurs when db update is failed.
     */
    @PostConstruct
    public void init() throws Exception {
        SqlGeneratorFactory.getInstance().register(new LockExDatabaseChangeLogGenerator());
        TypeConverterFactory.getInstance().register(H2ExTypeConverter.class);
        LiquibaseEx liquibase = new LiquibaseEx(getChangeLog(),
                new ClassLoaderResourceAccessor(getResourceLoader().getClassLoader()), getDatabase());
        // previous RenameColumnGenerator don't support Cubrid,so remove it and add new Generator
        SqlGeneratorFactory.getInstance().unregister(RenameColumnGenerator.class);
        SqlGeneratorFactory.getInstance().register(new RenameColumnExGenerator());
        SqlGeneratorFactory.getInstance().unregister(ModifyDataTypeGenerator.class);
        SqlGeneratorFactory.getInstance().register(new ModifyDataTypeExGenerator());
        try {
            liquibase.update(null);
        } catch (LiquibaseException e) {
            throw processException("Exception occurs while Liquibase update DB", e);
        }
    }

    public ResourceLoader getResourceLoader() {
        return resourceLoader;
    }

    public void setResourceLoader(ResourceLoader resourceLoader) {
        this.resourceLoader = resourceLoader;
    }

}