/*
* 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.cassandra;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.apache.usergrid.persistence.index.impl.ElasticSearchResource;
/**
* A singleton resource for spring that is used during testing. This will intialize spring, and then hold on to the
* spring context within this singleton
*/
public class SpringResource {
public static final Logger logger = LoggerFactory.getLogger( SpringResource.class );
private static SpringResource instance;
private ConfigurableApplicationContext applicationContext;
/**
* Creates a Cassandra starting ExternalResource for JUnit test cases which uses the specified SchemaManager for
* Cassandra.
*/
private SpringResource() {
logger.info( "Creating CassandraResource using {} for the ClassLoader.",
Thread.currentThread().getContextClassLoader() );
logger.info( "-------------------------------------------------------------------" );
logger.info( "Initializing Spring" );
logger.info( "-------------------------------------------------------------------" );
//wire up cassandra and elasticsearch before we start spring, otherwise this won't work
new CassandraResource().start();
new ElasticSearchResource().start();
final String[] locations = { "usergrid-test-context.xml" };
this.applicationContext = new ClassPathXmlApplicationContext( locations );
}
/**
* A singleton of this spring resource. This will instantiate and create
* the spring context if an instance is not present.
*/
public static synchronized SpringResource getInstance() {
if ( instance == null ) {
instance = new SpringResource();
}
return instance;
}
/**
* Gets a bean from the application context.
*
* @param requiredType the type of the bean
* @param <T> the type of the bean
*
* @return the bean
*/
public <T> T getBean( String name, Class<T> requiredType ) {
return applicationContext.getBean( name, requiredType );
}
/**
* Use this with care. You should use getBean in most situations
* @return
*/
public ApplicationContext getAppContext(){
return applicationContext;
}
/**
* Gets a bean from the application context.
*
* @param requiredType the type of the bean
* @param <T> the type of the bean
*
* @return the bean
*/
public <T> T getBean( Class<T> requiredType ) {
return applicationContext.getBean( requiredType );
}
}