使用JMX API实现Atomikos 5连接池监控,以下为示例代码:
org.apache.tomcat
tomcat-juli
9.0.0.M26
org.apache.tomcat.embed
tomcat-embed-jmx
9.0.0.M26
com.atomikos
transactions-jta
5.0.13
-Dcom.sun.management.jmxremote.port=10086 \\
-Dcom.sun.management.jmxremote.authenticate=false \\
-Dcom.sun.management.jmxremote.ssl=false
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import java.io.IOException;
public class AtomikosConnectionPoolMonitor {
private static final String RMI_HOST = "localhost";
private static final int RMI_PORT = 10086;
public static void main(String[] args) throws IOException, MalformedObjectNameException {
JMXServiceURL jmxUrl = new JMXServiceURL("service:jmx:rmi://" + RMI_HOST + ":" + RMI_PORT + "/jndi/rmi://" + RMI_HOST + ":" + RMI_PORT + "/jmxrmi");
JMXConnector jmxConnector = JMXConnectorFactory.connect(jmxUrl);
MBeanServerConnection connection = jmxConnector.getMBeanServerConnection();
ObjectName objectName = new ObjectName("com.atomikos:type=ConnectionPool,*");
connection.queryNames(objectName, null).forEach(name -> {
try {
System.out.println("name = " + name);
System.out.println("activeCount = " + connection.getAttribute(name, "activeCount"));
System.out.println("availableCount = " + connection.getAttribute(name, "availableCount"));
System.out.println("maxPoolSize = " + connection.getAttribute(name, "maxPoolSize"));
System.out.println("minPoolSize = " + connection.getAttribute(name, "minPoolSize"));
System.out.println("poolSize = " + connection.getAttribute(name, "poolSize"));
} catch (Exception e) {
e.printStackTrace();
}
});
}
}
以上代码中,使用JMXConnector连接到配置好的Tomcat JMX,并使用MBeanServerConnection查询所有带有“com.atomikos:type=ConnectionPool”的MBean,然后分别输出连接池的状态信息。
当需要监控Atomikos连接池时,可以通过运行上述代码获取连接池的状态信息。