/*
* 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;
import java.util.List;
import org.apache.hadoop.yarn.api.records.LocalResourceType;
import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.ManagedList;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.xml.DomUtils;
import org.springframework.yarn.YarnSystemConstants;
import org.springframework.yarn.fs.LocalResourcesFactoryBean;
import org.springframework.yarn.fs.LocalResourcesFactoryBean.CopyEntry;
import org.springframework.yarn.fs.LocalResourcesFactoryBean.TransferEntry;
import org.w3c.dom.Element;
/**
* Simple namespace parser for yarn:localresources.
*
* @author Janne Valkealahti
*
*/
public class LocalresourcesParser extends AbstractImprovedSimpleBeanDefinitionParser {
@Override
protected Class<?> getBeanClass(Element element) {
return LocalResourcesFactoryBean.class;
}
@Override
protected String defaultId(ParserContext context, Element element) {
return YarnSystemConstants.DEFAULT_ID_LOCAL_RESOURCES;
}
@Override
protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
super.doParse(element, parserContext, builder);
ManagedList<BeanDefinition> entries = new ManagedList<BeanDefinition>();
parseTransferEntries(element, "hdfs", entries);
builder.addPropertyValue("hdfsEntries", entries);
entries = new ManagedList<BeanDefinition>();
parseCopyEntries(element, "copy", entries);
builder.addPropertyValue("copyEntries", entries);
YarnNamespaceUtils.setReferenceIfAttributeDefined(builder, element, "configuration");
}
private void parseTransferEntries(Element element, String name, List<BeanDefinition> entries) {
List<Element> cp = DomUtils.getChildElementsByTagName(element, name);
for (Element entry : cp) {
BeanDefinitionBuilder bd = BeanDefinitionBuilder.genericBeanDefinition(TransferEntry.class);
bd.addConstructorArgValue(
entry.hasAttribute("type") ?
LocalResourceType.valueOf(entry.getAttribute("type").toUpperCase()) :
null);
bd.addConstructorArgValue(
entry.hasAttribute("visibility") ?
LocalResourceVisibility.valueOf(entry.getAttribute("visibility").toUpperCase()) :
null);
bd.addConstructorArgValue(entry.getAttribute("path"));
bd.addConstructorArgValue(entry.hasAttribute("staging") ? entry.getAttribute("staging") : false);
entries.add(bd.getBeanDefinition());
}
}
private void parseCopyEntries(Element element, String name, List<BeanDefinition> entries) {
List<Element> cp = DomUtils.getChildElementsByTagName(element, name);
for (Element entry : cp) {
BeanDefinitionBuilder bd = BeanDefinitionBuilder.genericBeanDefinition(CopyEntry.class);
bd.addConstructorArgValue(entry.getAttribute("src"));
bd.addConstructorArgValue(entry.getAttribute("dest"));
bd.addConstructorArgValue(entry.hasAttribute("staging") ? entry.getAttribute("staging") : false);
entries.add(bd.getBeanDefinition());
}
}
}