/*
* Copyright 2013 the original author or authors.
*
* 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.springframework.yarn.config.annotation;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportSelector;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.yarn.config.annotation.EnableYarn.Enable;
import org.springframework.yarn.config.annotation.configuration.SpringYarnAppmasterConfiguration;
import org.springframework.yarn.config.annotation.configuration.SpringYarnClientConfiguration;
import org.springframework.yarn.config.annotation.configuration.SpringYarnConfiguration;
import org.springframework.yarn.config.annotation.configuration.SpringYarnContainerConfiguration;
/**
* Spring {@link ImportSelector} choosing appropriate {@link Configuration}
* based on {@link EnableYarn} annotation.
*
* @author Janne Valkealahti
*
*/
public class SpringYarnConfigurationImportSelector implements ImportSelector {
private final static Log log = LogFactory.getLog(SpringYarnConfigurationImportSelector.class);
@Override
public String[] selectImports(AnnotationMetadata importingClassMetadata) {
Map<String, Object> attrMap = importingClassMetadata.getAnnotationAttributes(EnableYarn.class.getName());
AnnotationAttributes enableAttrs = AnnotationAttributes.fromMap(attrMap);
Enable enable = enableAttrs.getEnum("enable");
String[] configs = new String[2];
if (enable == Enable.CLIENT) {
configs[0] = SpringYarnClientConfiguration.class.getName();
} else if (enable == Enable.APPMASTER) {
configs[0] = SpringYarnAppmasterConfiguration.class.getName();
} else if (enable == Enable.CONTAINER) {
configs[0] = SpringYarnContainerConfiguration.class.getName();
} else {
configs[0] = SpringYarnConfiguration.class.getName();
}
configs[1] = ConfiguringBeanFactoryPostProcessorConfiguration.class.getName();
if (log.isDebugEnabled()) {
log.debug("Using configs " + configs[0] + "," + configs[1]);
}
return configs;
}
}