package com.bigdata.counters.ganglia;
import java.util.Iterator;
import java.util.regex.Pattern;
import com.bigdata.counters.AbstractStatisticsCollector;
import com.bigdata.counters.CounterSet;
import com.bigdata.counters.ICounter;
import com.bigdata.counters.ICounterSet;
import com.bigdata.ganglia.GangliaMunge;
import com.bigdata.ganglia.IGangliaMetricsCollector;
import com.bigdata.ganglia.IGangliaMetricsReporter;
/**
* Reflects collected host metrics to ganglia.
*
* <pre>
* /192.168.1.10/CPU/% IO Wait=0.0
* /192.168.1.10/CPU/% Processor Time=0.24
* /192.168.1.10/CPU/% System Time=0.08
* /192.168.1.10/CPU/% User Time=0.16
* /192.168.1.10/Info/Architecture=amd64
* /192.168.1.10/Info/Number of Processors=4
* /192.168.1.10/Info/Operating System Name=Linux
* /192.168.1.10/Info/Operating System Version=2.6.38-11-server
* /192.168.1.10/Info/Processor Info=Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz Family 6 Model 42 Stepping 7, GenuineIntel
* /192.168.1.10/Memory/Bytes Free=5.031514112E9
* /192.168.1.10/Memory/Major Page Faults Per Second=0.0
* /192.168.1.10/Memory/Swap Bytes Used=0.0
* /192.168.1.10/PhysicalDisk/Bytes Read Per Second=0.0
* /192.168.1.10/PhysicalDisk/Bytes Written Per Second=6144.0
* </pre>
*/
public class HostMetricsCollector implements IGangliaMetricsCollector {
/**
* Match anything which does NOT include <code>.service.</code> in the
* counter path.
*
* @see <a href="http://www.regular-expressions.info/lookaround.html">
* Regular Expressions Info </a>
*/
static final Pattern filter;
static {
filter = Pattern.compile("^(?!.*/service/).*$");
}
private final AbstractStatisticsCollector statisticsCollector;
public HostMetricsCollector(
final AbstractStatisticsCollector statisticsCollector) {
if (statisticsCollector == null)
throw new IllegalArgumentException();
this.statisticsCollector = statisticsCollector;
}
@Override
public void collect(final IGangliaMetricsReporter reporter) {
// log.warn(statisticsCollector.getCounters().toString());
// Common base path which is NOT included in the generated metric name.
final String basePrefix = ICounterSet.pathSeparator
+ AbstractStatisticsCollector.fullyQualifiedHostName
+ ICounterSet.pathSeparator;
// Start at the "host" level.
final CounterSet counters = (CounterSet) statisticsCollector
.getCounters().getPath(basePrefix);
@SuppressWarnings("rawtypes")
final Iterator<ICounter> itr = counters.getCounters(filter);
while (itr.hasNext()) {
final ICounter<?> c = itr.next();
final Object value = c.getInstrument().getValue();
// The full path to the metric name.
final String path = c.getPath();
// Just the metric name.
final String metricName = GangliaMunge.munge(path.substring(
basePrefix.length()).replace('/', '.'));
reporter.setMetric(metricName, value);
}
}
}