/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.usergrid.persistence.core.guice;
import org.junit.rules.ExternalResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.usergrid.persistence.core.migration.data.DataMigrationManager;
import org.apache.usergrid.persistence.core.migration.schema.MigrationException;
import com.google.inject.Inject;
import com.google.inject.Singleton;
/**
* A test rule that will set up a specific version for the plugin before test invocation
* then set it back afterwards
*/
public class DataMigrationResetRule extends ExternalResource {
private static final Logger logger = LoggerFactory.getLogger( DataMigrationResetRule.class );
private DataMigrationManagerProvider dataMigrationManagerProvider;
private final String pluginName;
private final int versionToSet;
private int existingVersion = -1;
public DataMigrationResetRule( final DataMigrationManagerProvider dataMigrationManagerProvider, final String pluginName, final int versionToSet ) {
this.dataMigrationManagerProvider = dataMigrationManagerProvider;
this.pluginName = pluginName;
this.versionToSet = versionToSet;
}
@Override
protected void before() throws MigrationException {
existingVersion = dataMigrationManagerProvider.getDataMigrationManager().getCurrentVersion( pluginName );
dataMigrationManagerProvider.getDataMigrationManager().resetToVersion( pluginName, versionToSet );
logger.info( "Migration complete" );
}
@Override
protected void after() {
dataMigrationManagerProvider.getDataMigrationManager().resetToVersion( pluginName, existingVersion );
}
/**
* Interface for getting a data migration manager during testing. Ugly, but required because we
* can't inject into this member
*/
public static interface DataMigrationManagerProvider{
/**
* Get the data migration manager
* @return
*/
public DataMigrationManager getDataMigrationManager();
}
}