ActiveMQ：通过JMX获取连接列表？

Question

如何获取ActiveMQ OpenWire 连接器的连接列表？ JConsole 能够列出连接，但我看不到可以使用哪个“视图”来获取列表：

连接的示例 ObjectName： org.apache.activemq:BrokerName=localhost,Type=Connection,ConnectorName=openwire,Connection=toto

我尝试了“ConnectorViewMBean”，但对其的操作不允许我列出连接：

ObjectName name = new ObjectName("org.apache.activemq:BrokerName=localhost,Type=Connection,ConnectorName=openwire"); 
mbsc.getMBeanInfo(name); 
ConnectorViewMBean view = JMX.newMBeanProxy(mbsc, name, ConnectorViewMBean.class);

Answer 1

我使用的是 ActiveMQ 5.14.5，它使用不同的 ObjectName 格式通过 JMX 查询连接。在此版本的 ActiveMQ 中，相当于 Andrew 的答案 是：

final JMXServiceURL url       = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi");
final JMXConnector  connector = JMXConnectorFactory.connect(url, null);
connector.connect();

final ObjectName connectionName = new ObjectName(
    "org.apache.activemq:type=Broker," +
    "brokerName=localhost,"            +
    "connector=clientConnectors,"      +
    "connectorName=openwire,"          +
    "connectionViewType=clientId,"     +
    "connectionName=*"
);

final MBeanServerConnection mbsc  = connector.getMBeanServerConnection();
final Set<ObjectName>       names = mbsc.queryNames(connectionName, null);
for (final ObjectName name : names) {
    System.out.println(name.getCanonicalName());
}

Answer 2

在最新版本的 ActiveMQ (5.1xx) 中，您可以使用 BrokerViewMBean 获取传输连接器的映射：

Map<String, String[]> env = new HashMap<>();
String[] creds = {brokerUsername, brokerPassword};
env.put(JMXConnector.CREDENTIALS, creds);

final String managementURL = "service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi";
try (JMXConnector connector = JMXConnectorFactory.connect(new JMXServiceURL(managementURL, env)) {
   ObjectName on = new ObjectName("org.apache.activemq:type=Broker,brokerName=localhost");
   BrokerViewMBean broker = MBeanServerInvocationHandler.newProxyInstance(connector.getMBeanServerConnection(), on, BrokerViewMBean.class, false);
   Map<String, String> transportConnectors = broker.getTransportConnectors();
   // broker.getTransportConnectorsByType("tcp"); // openwire
   // broker.addConnector(String discoveryAddress);
   // broker.removeConnector(String connectorName);
 } catch (MalformedObjectNameException ex) {
    // log error
 } catch (IOException ex) {
    // log error
 } catch (Exception ex) {
    // log error
 }

另请参阅 ConnectorViewMBean。

但是，虽然 BrokerViewMBean 中有一些方法可以获取传输连接器（如上面的代码所示），但没有任何方法可以获取网络（也称为代理到代理）连接器的列表。

Answer 3

解决方案是使用表达式：

ObjectName connectionNames = 
      new ObjectName("org.apache.activemq:BrokerName=localhost," + 
                     "Type=Connection,ConnectorName=openwire,Connection=*");

Set<ObjectName> names = mbsc.queryNames(connectionNames, null); 
for(ObjectName name : names) { 
   logger.error("Name: "+name.getCanonicalName()); 
}