Proposed brooklyn Java code to poll an underlying resource, to update attributes (aka sensors)

gistfile1.java

// 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()));



// Polls URLs, and uses the HTTP response to set a Brooklyn entity attribute (aka sensor).
//
// The argument to onSuccess is a HttpPollResponse, which has things like:
//   getStatusLine (which as getStatusCode, getReasonPhrase, getProtocolVersion)
//   getHeaderLists (which returns Map<String,List<String>>)
//   getContents (which returns byte[])

    String baseUrl = "http://"+host+":"+port+"/management/";
    HttpSensorAdapter httpAdapter = registry.register(new HttpSensorAdapter2(baseUrl));

    httpAdapter.withSubUrl("subsystem/web/connector/http/read-resource")
            .poll(new HttpPollConfig<String>(MY_BROOKLYN_SENSOR)
                    .onSuccess(HttpResponseFunctions.stringContentsFunction())
                    .onError("blah blah");