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Managing Camel Routes With JMX APIs

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Managing Camel Routes With JMX APIs

· Integration Zone
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Here is a quick example of how to programmatically access Camel MBeans to monitor and manipulate routes...

first, get a connection to a JMX server (assumes localhost, port 1099, no auth)
note, always cache the connection for subsequent requests (can cause memory utilization issues otherwise)

JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi");
JMXConnector jmxc = JMXConnectorFactory.connect(url);
MBeanServerConnection server = jmxc.getMBeanServerConnection();

use the following to iterate over all routes and retrieve statistics (state, exchanges, etc)...

ObjectName objName = new ObjectName("org.apache.camel:type=routes,*");
List<ObjectName> cacheList = new LinkedList(server.queryNames(objName, null));
for (Iterator<ObjectName> iter = cacheList.iterator(); iter.hasNext();)
{
    objName = iter.next();
    String keyProps = objName.getCanonicalKeyPropertyListString();
    ObjectName objectInfoName = new ObjectName("org.apache.camel:" + keyProps);
    String routeId = (String) server.getAttribute(objectInfoName, "RouteId");
    String description = (String) server.getAttribute(objectInfoName, "Description");
    String state = (String) server.getAttribute(objectInfoName, "State");
    ...
}

use the following to execute operations against a Camel route (stop,start, etc)

ObjectName objName = new ObjectName("org.apache.camel:type=routes,*");
List<ObjectName> cacheList = new LinkedList(server.queryNames(objName, null));
for (Iterator<ObjectName> iter = cacheList.iterator(); iter.hasNext();)
{
    objName = iter.next();
    String keyProps = objName.getCanonicalKeyPropertyListString();
    if(keyProps.contains(routeID))
    {
        ObjectName objectRouteName = new ObjectName("org.apache.camel:" + keyProps);
        Object[] params = {};
        String[] sig = {};
        server.invoke(objectRouteName, operationName, params, sig);
        return;
    }
}

 summary

These APIs can easily be used to build a web or command line based tool to support remote Camel management features. All of these features are available via the JMX console and Camel does provide a web console to support some management/monitoring tasks.

See these pages for more information...
http://camel.apache.org/camel-jmx.html
http://camel.apache.org/web-console.html

 

 

 

 

 

 

 

 

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Published at DZone with permission of Ben O'Day, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

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