JMX之将Spring Bean 输出为JMX并为远程服务暴露Mbean

zhangwei_david

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JMX 是Java 管理扩展（Java Management Extensions);JMX是一种管理和监控系统资源的技术。这种规范为运行管理系统体统了强大的功能。这些资源有托管Bean(managed beans,MBeans)表示。Spring 可以将任何Spring 管理的Bean输出为Mbean，而不需要在该Bean中定义任何JMX特有的属性。可以简单地通过声明一个MbeanExporter实例来完成将普通Bean 导出为Mbean.

如果Bean实现了任意一个JMX的管理接口 MBeanExporter可以简单地通过自动检测过程注册服务器的MBean
如果Bean没有实现JMX的挂历接口 MBeanExporter通过使用MBeanInfoAssembler创建管理信息

/**
 *定义一个普通的接口
 *
 * @author zhangwei_david
 * @version $Id: HiMBean.java, v 0.1 2015年1月24日 下午1:16:15 zhangwei_david Exp $
 */
public interface HiMBean {
    /**
     *打招呼
     */
    public void sayHello();

    /**
     * 加法计算器
     *
     * @param x
     * @param y
     * @return
     */
    public int add(int x, int y);

    /**
     * 获取名称
     *
     * @return
     */
    public String getName();

    /**
     *获取缓存大小
     *
     * @return
     */
    public int getCacheSize();

    /**
     *设置缓存大小
     *
     * @param size
     */
    public void setCacheSize(int size);
}

/**
 *简单实现类
 * @author Lenovo
 * @version $Id: Hi.java, v 0.1 2014年9月26日 下午2:48:09 Lenovo Exp $
 */
public class HiMbeanImpl implements HiMBean {

    private final String     name               = "Reginald";
    private int              cacheSize          = DEFAULT_CACHE_SIZE;
    private static final int DEFAULT_CACHE_SIZE = 200;

    /**
     * @see com.cathy.demo.jmx.notifications.HiMBean#sayHello()
     */
    public void sayHello() {
        System.out.println("Hello," + getName());
    }

    /**
     * @see com.cathy.demo.jmx.notifications.HiMBean#add(int, int)
     */
    public int add(int x, int y) {
        return x + y;
    }

    /**
     * @see com.cathy.demo.jmx.notifications.HiMBean#getName()
     */
    public String getName() {
        return name;
    }

    /**
     * @see com.cathy.demo.jmx.notifications.HiMBean#getCacheSize()
     */
    public int getCacheSize() {
        return cacheSize;
    }

    /**
     * @see com.cathy.demo.jmx.notifications.HiMBean#setCacheSize(int)
     */
    public void setCacheSize(int size) {
        cacheSize = size;
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jee="http://www.springframework.org/schema/jee"
	xmlns:task="http://www.springframework.org/schema/task" xmlns:util="http://www.springframework.org/schema/util"
	xmlns:jaxws="http://cxf.apache.org/jaxws"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context-3.0.xsd
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
		http://www.springframework.org/schema/jee 
		http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
		http://www.springframework.org/schema/task  
        http://www.springframework.org/schema/task/spring-task-3.1.xsd  
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util-3.0.xsd
        http://cxf.apache.org/jaxws
        http://cxf.apache.org/schemas/jaxws.xsd
		">
	<aop:aspectj-autoproxy />

	<context:annotation-config />
	<context:component-scan base-package="com.cathy.demo.jmx.*" />
	<!-- HiMbean -->
	<bean id="hiMbean" class="com.cathy.demo.jmx.HiMbeanImpl"/>
	
	<bean id="mbeanExporter" class="org.springframework.jmx.export.MBeanExporter">
		<property name="beans">
			<util:map>
				<entry key="bean:name=hiMbean" value-ref="hiMbean"/>
			</util:map>
		</property>
	
	</bean>
	
</beans>

/**
 *
 * @author zhangwei
 * @version $Id: AsyncDemoTest.java, v 0.1 2014年9月26日 下午10:43:43 zhangwei Exp $
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath*:META-INF/spring/jmx-beans.xml")
public class JmxTest {

    @Test
    public void testAsync() throws InterruptedException {
        TimeUnit.HOURS.sleep(1);
    }

}

jconsole的结果：

如果不是用Spring导出一个Mban的化代码如下:

/**
 *
 * @author Lenovo
 * @version $Id: Main.java, v 0.1 2014年9月26日 下午4:08:31 Lenovo Exp $
 */
public class Main {

    /**
     *
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        //获取Mean的平台服务
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        // 对即将被注册的MBean 构造一个ObjectName
        ObjectName objectName = new ObjectName("com.cathy.demo.jmx:type=Hi");
        // 创建一个Mbean
        RequiredModelMBean mbean = new RequiredModelMBean();
        HiMbeanImpl hiMbean = new HiMbeanImpl();
        mbean.setManagedResource(hiMbean, "objectReference");

        ModelMBeanAttributeInfo name = new ModelMBeanAttributeInfo("name", "java.lang.String",
            "userName", true, true, false, new DescriptorSupport(new String[] { "name=name",
                    "descriptorType=attribute", "getMethod=getName", "setMethod=setName" }));
        ModelMBeanOperationInfo sayHello = new ModelMBeanOperationInfo("say Hello", hiMbean
            .getClass().getMethod("sayHello"));
        ModelMBeanOperationInfo getName = new ModelMBeanOperationInfo("get userName", hiMbean
            .getClass().getMethod("getName"));
        ModelMBeanInfo mbeanInfo = new ModelMBeanInfoSupport("HiMbean", "Test",
            new ModelMBeanAttributeInfo[] { name }, null, new ModelMBeanOperationInfo[] { sayHello,
                    getName }, null);
        mbean.setModelMBeanInfo(mbeanInfo);
        // 将Mbean 注册到MBeanServer
        mbs.registerMBean(mbean, objectName);
        // 一直等待
        System.out.println("Waiting forever...");
        Thread.sleep(Long.MAX_VALUE);

    }
}

为远程服务暴露一个Mbean

有时候需要将本地的Mbean暴露出去，供远程调用；在Spring可以使用ConnectorServerFactoryBean创建一个JMX连接服务器。

<bean id="rmiRegistry" class="org.springframework.remoting.rmi.RmiRegistryFactoryBean"/>
	<bean id="connectorServer" class="org.springframework.jmx.support.ConnectorServerFactoryBean" depends-on="rmiRegistry">
		<property name="serviceUrl" value="service:jmx:rmi://localhost/jndi/rmi://localhost:1099/hiMbean"/>
	</bean>

通过Jconsole 访问远程Mbean

已经为远程服务暴露了Mbean 那么如果在Spring 中远程调用Mbean又是什么样的呢？

	<bean id="mbeanServerConnection" class="org.springframework.jmx.support.MBeanServerConnectionFactoryBean">
		<property name="serviceUrl" value="service:jmx:rmi://localhost/jndi/rmi://localhost:1099/hiMbean"/>
	</bean>
	<bean id="hiMbeanProxy" class="org.springframework.jmx.access.MBeanProxyFactoryBean">
		<property name="server" ref="mbeanServerConnection"/>
		<property name="objectName" value="bean:name=hiMbean"/>
		<property name="proxyInterface" value="com.cathy.demo.jmx.HiMBean"/>
	</bean>

/**
 *
 * @author zhangwei
 * @version $Id: AsyncDemoTest.java, v 0.1 2014年9月26日 下午10:43:43 zhangwei Exp $
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath*:META-INF/spring/jmx-beans.xml")
public class JmxTest {
    @Autowired
    private HiMBean hiMbeanProxy;

    @Test
    public void testAsync() throws InterruptedException {

        hiMbeanProxy.sayHello();
        TimeUnit.HOURS.sleep(1);
    }

}

结果是：

一月 24, 2015 2:16:34 下午 org.springframework.test.context.TestContextManager retrieveTestExecutionListeners
信息: @TestExecutionListeners is not present for class [class com.cathy.demo.schedule.JmxTest]: using defaults.
一月 24, 2015 2:16:34 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from URL [file:/H:/Alipay.com/workspace4alipay/demo/target/classes/META-INF/spring/jmx-beans.xml]
一月 24, 2015 2:16:35 下午 org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters
信息: JSR-250 'javax.annotation.ManagedBean' found and supported for component scanning
一月 24, 2015 2:16:35 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.GenericApplicationContext@7c703b: startup date [Sat Jan 24 14:16:35 CST 2015]; root of context hierarchy
一月 24, 2015 2:16:35 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@afc191: defining beans [org.springframework.aop.config.internalAutoProxyCreator,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,hiMbean,mbeanExporter,rmiRegistry,connectorServer,mbeanServerConnection,hiMbeanProxy,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
一月 24, 2015 2:16:35 下午 org.springframework.jmx.export.MBeanExporter afterPropertiesSet
信息: Registering beans for JMX exposure on startup
一月 24, 2015 2:16:35 下午 org.springframework.jmx.export.MBeanExporter registerBeanInstance
信息: Located managed bean 'bean:name=hiMbean': registering with JMX server as MBean [bean:name=hiMbean]
一月 24, 2015 2:16:35 下午 org.springframework.remoting.rmi.RmiRegistryFactoryBean getRegistry
信息: Looking for RMI registry at port '1099'
一月 24, 2015 2:16:36 下午 org.springframework.remoting.rmi.RmiRegistryFactoryBean getRegistry
信息: Could not detect RMI registry - creating new one
一月 24, 2015 2:16:36 下午 org.springframework.jmx.support.ConnectorServerFactoryBean afterPropertiesSet
信息: JMX connector server started: javax.management.remote.rmi.RMIConnectorServer@9d0b9d
Hello,Reginald