[英]How to query the servo MBean for Hystrix?
我能夠在JConsole中訪問MBean,並且它們顯示為com.netflix.servo
> HystrixCommand
> countSuccess
>(實際命令及其屬性)
我找不到有關如何查詢這些對象和值的任何示例,例如countSuccess,countFailure等。
我最接近的是ObjectName o = new ObjectName("com.netflix.servo:name=countSuccess,instance=T6JmxStatCommand,type=HystrixCommand");
它位於https://github.com/n0rad/hands-on-hystrix/blob/master/src/test/java/fr/n0rad/hands/on/hystrix/t6/T6JmxStatMain.java,但顯然不是工作。
通過以下代碼HystrixPlugins.getInstance().registerMetricsPublisher(HystrixServoMetricsPublisher.getInstance());
: HystrixPlugins.getInstance().registerMetricsPublisher(HystrixServoMetricsPublisher.getInstance());
發現所查詢的對象名稱沒有問題。 實際上,它與JConsole中的相同。 屏幕截圖的右側顯示了完整的語法:
另外,我需要向Eclipse運行配置中添加一些系統屬性: -Dcom.sun.management.jmxremote.rmi.port=8700 -Dcom.sun.management.jmxremote.port=8600 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false
然后,我可以使用端口8600進行連接。在代碼中:
package com.awgtek.miscpocs.lognfetch.client;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
public class TestJMXConn {
public static void main(String[] args) throws Exception {
JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:8600/jmxrmi");
JMXConnector connect = JMXConnectorFactory.connect(url);
MBeanServerConnection mbsc = connect.getMBeanServerConnection();
// ObjectName o = new ObjectName("com.netflix.servo:name=countSuccess,type=HystrixCommand,instance=LogAndFetchRestServicePostCommand");
ObjectName o = new ObjectName("com.netflix.servo:name=countSuccess,type=HystrixCommand,instance=LogAndFetchRestServiceGetCommand");
Object value = mbsc.getAttribute(o, "value");
System.out.println("the value: " + value);
connect.close();
}
}
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