DZ3 Data Logger: Logging *Everything*

During DZ2 development it became clear tat there's no such thing as too much instrumentation data. Hence, DZ3 was architected in such a way that any object that produces DataSample<E extends Number> can have their data logged.

Here's an example how you can log temperature sensor data (this has been added to the bottom of this example):

<!-- Loggers -->
<bean id="rrdbase" class="java.io.File">
       <!-- This is the path in the file system. If in doubt, make it absolute --/>
       <constructor-arg type="java.lang.String" value="./rrd"/>
</bean>
<bean id="rrdtool" class="java.io.File">
       <constructor-arg type="java.lang.String" value="/usr/bin/rrdtool"/>
</bean>
<bean id="rrdlogger" class="net.sf.jukebox.datastream.logger.impl.rrd.RrdLogger" init-method="start">
       <constructor-arg index="0" type="java.util.Set">
               <set>
                       <ref bean="temperature_sensor-6EE055000000"/>
                       <ref bean="temperature_sensor-cpu1"/>
                       <ref bean="temperature_sensor-cpu2"/>
                       <ref bean="temperature_sensor-mobo"/>
                       <ref bean="temperature_sensor-sda"/>
                       <ref bean="temperature_sensor-sdb"/>
               </set>
       </constructor-arg>
       <constructor-arg index="1" type="java.io.File" ref="rrdbase"/>
       <constructor-arg index="2" type="java.io.File" ref="rrdtool"/>
</bean>

And here's the data that it produced during its first 3 hours of operation:



UPDATE (2009/11/08): Added comment to rrdbean constructor argument - thanks to David for clarification.