/*
* Copyright (c) 2011, Rickard Öberg. All Rights Reserved.
* Copyright (c) 2012, Paul Merlin. All Rights Reserved.
*
* 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.qi4j.library.sql.liquibase;
import java.net.ConnectException;
import java.sql.Connection;
import java.sql.SQLException;
import javax.sql.DataSource;
import liquibase.Liquibase;
import liquibase.database.DatabaseConnection;
import liquibase.database.jvm.JdbcConnection;
import liquibase.resource.ClassLoaderResourceAccessor;
import org.qi4j.api.activation.ActivatorAdapter;
import org.qi4j.api.activation.Activators;
import org.qi4j.api.configuration.Configuration;
import org.qi4j.api.injection.scope.Service;
import org.qi4j.api.injection.scope.This;
import org.qi4j.api.mixin.Mixins;
import org.qi4j.api.service.ServiceComposite;
import org.qi4j.api.service.ServiceImporterException;
import org.qi4j.api.service.ServiceReference;
import org.qi4j.library.sql.common.SQLUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Wrapper service for Liquibase.
*/
@Mixins( LiquibaseService.Mixin.class )
@Activators( LiquibaseService.Activator.class )
public interface LiquibaseService
extends ServiceComposite
{
void activateLiquibase()
throws Exception;
public static class Activator
extends ActivatorAdapter<ServiceReference<LiquibaseService>>
{
@Override
public void afterActivation( ServiceReference<LiquibaseService> activated )
throws Exception
{
activated.get().activateLiquibase();
}
}
public static abstract class Mixin
implements LiquibaseService
{
private static final Logger LOGGER = LoggerFactory.getLogger( "org.qi4j.library.sql" );
@This
Configuration<LiquibaseConfiguration> config;
@Service
ServiceReference<DataSource> dataSource;
@Override
public void activateLiquibase()
throws Exception
{
config.refresh();
boolean enabled = config.get().enabled().get();
if ( !enabled ) {
return;
}
Connection connection = null;
try {
connection = dataSource.get().getConnection();
DatabaseConnection dc = new JdbcConnection( connection );
Liquibase liquibase = new Liquibase( config.get().changeLog().get(), new ClassLoaderResourceAccessor(), dc );
liquibase.update( config.get().contexts().get() );
} catch ( SQLException e ) {
Throwable ex = e;
while ( ex.getCause() != null ) {
ex = ex.getCause();
}
if ( ex instanceof ConnectException ) {
LOGGER.warn( "Could not connect to database; Liquibase should be disabled" );
return;
}
LOGGER.error( "Liquibase could not perform database migration", e );
} catch ( ServiceImporterException ex ) {
LOGGER.warn( "DataSource is not available - database refactoring skipped" );
} finally {
SQLUtil.rollbackQuietly( connection );
SQLUtil.closeQuietly( connection );
}
}
}
}