blob: f0c1e02daf5041c995047a28e2cef823438ff5db [file] [log] [blame] [view]
---
aliases:
- /en/docs3-v2/java-sdk/reference-manual/spi/description/monitor/
- /en/docs3-v2/java-sdk/reference-manual/spi/description/monitor/
description: Monitoring Center Extension
linkTitle: Monitoring Center Extension
title: Monitoring Center Extension
type: docs
weight: 10
---
## Extension Description
Responsible for monitoring service call counts and call times.
## Extension Interfaces
* `org.apache.dubbo.monitor.MonitorFactory`
* `org.apache.dubbo.monitor.Monitor`
## Extension Configuration
```xml
<!-- Define the monitoring center -->
<dubbo:monitor address="xxx://ip:port" />
```
## Known Extensions
org.apache.dubbo.monitor.support.dubbo.DubboMonitorFactory
## Extension Example
Maven project structure:
```
src
|-main
|-java
|-com
|-xxx
|-XxxMonitorFactory.java (implements the MonitorFactory interface)
|-XxxMonitor.java (implements the Monitor interface)
|-resources
|-META-INF
|-dubbo
|-org.apache.dubbo.monitor.MonitorFactory (text file, content: xxx=com.xxx.XxxMonitorFactory)
```
XxxMonitorFactory.java
```java
package com.xxx;
import org.apache.dubbo.monitor.MonitorFactory;
import org.apache.dubbo.monitor.Monitor;
import org.apache.dubbo.common.URL;
public class XxxMonitorFactory implements MonitorFactory {
public Monitor getMonitor(URL url) {
return new XxxMonitor(url);
}
}
```
XxxMonitor.java
```java
package com.xxx;
import org.apache.dubbo.monitor.Monitor;
public class XxxMonitor implements Monitor {
public void count(URL statistics) {
// ...
}
}
```
META-INF/dubbo/org.apache.dubbo.monitor.MonitorFactory
```properties
xxx=com.xxx.XxxMonitorFactory
```