aledsage

// Polls the given JMX attribute every minute; transforms the result from tabular data
// into a java.util.Map and sets the given brooklyn sensor (aka attribute) accordingly.
// The onSuccess is passed the JMX attribute's value.

    JmxSensorAdapter jmxAdapter = registry.register(new JmxSensorAdapter());
    jmxAdapter.withObjectName(myJmxObjectName)
            .pollAttribute(new JmxAttributePollConfig<Map>(MY_BROOKLYN_SENSOR)
                    .attributeName(myJmxAttributeName)
                    .period(1, TimeUnit.MINUTES)
                    .onSuccess(JmxResponseFunctions.tabularDataToMap()));

aledsage

// Polls a given URL, and uses the HTTP response to set the 
// two Brooklyn entity attributes SERVICE_UP and REQUEST_COUNT

    def http = sensorRegistry.register(
            new HttpSensorAdapter("http://$host:$port/management/subsystem/web/connector/http/read-resource",
                period: 200*TimeUnit.MILLISECONDS).
                vars("include-runtime":true) )
       
    with(http) {
        poll(SERVICE_UP) { responseCode==200 }

aledsage

package brooklyn.demo;

import static brooklyn.event.basic.DependentConfiguration.valueWhenAttributeReady;

import brooklyn.entity.basic.AbstractApplication;
import brooklyn.entity.database.mysql.MySqlNode;
import brooklyn.entity.proxy.nginx.NginxController;
import brooklyn.entity.webapp.ControlledDynamicWebAppCluster;
import brooklyn.entity.webapp.DynamicWebAppCluster;
import brooklyn.entity.webapp.jboss.JBoss7Server;