spring MBeanServerBeanDefinitionParser 源码
spring MBeanServerBeanDefinitionParser 代码
文件路径：/spring-context/src/main/java/org/springframework/context/config/MBeanServerBeanDefinitionParser.java
/*
* Copyright 2002-2021 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
*
* https://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.context.config;
import org.w3c.dom.Element;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.jmx.support.MBeanServerFactoryBean;
import org.springframework.util.StringUtils;
/**
* Parser for the <context:mbean-server/> element.
*
* <p>Registers an instance of
* {@link org.springframework.jmx.export.annotation.AnnotationMBeanExporter}
* within the context.
*
* @author Mark Fisher
* @author Juergen Hoeller
* @since 2.5
* @see org.springframework.jmx.export.annotation.AnnotationMBeanExporter
*/
class MBeanServerBeanDefinitionParser extends AbstractBeanDefinitionParser {
private static final String MBEAN_SERVER_BEAN_NAME = "mbeanServer";
private static final String AGENT_ID_ATTRIBUTE = "agent-id";
@Override
protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext) {
String id = element.getAttribute(ID_ATTRIBUTE);
return (StringUtils.hasText(id) ? id : MBEAN_SERVER_BEAN_NAME);
}
@Override
protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
String agentId = element.getAttribute(AGENT_ID_ATTRIBUTE);
if (StringUtils.hasText(agentId)) {
RootBeanDefinition bd = new RootBeanDefinition(MBeanServerFactoryBean.class);
bd.getPropertyValues().add("agentId", agentId);
return bd;
}
RootBeanDefinition bd = new RootBeanDefinition(MBeanServerFactoryBean.class);
bd.getPropertyValues().add("locateExistingServerIfPossible", Boolean.TRUE);
// Mark as infrastructure bean and attach source location.
bd.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
bd.setSource(parserContext.extractSource(element));
return bd;
}
}
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