/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.bigdata.rdf.sail.webapp.lbs.policy.counters;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import com.bigdata.counters.CounterSet;
import com.bigdata.counters.ICounter;
import com.bigdata.counters.ICounterNode;
import com.bigdata.rdf.sail.webapp.lbs.AbstractHostMetrics;
public class CounterSetHostMetricsWrapper extends AbstractHostMetrics {
private final CounterSet counterSet;
@Override
public String toString() {
return getClass().getName() + "{counters=" + counterSet + "}";
}
public CounterSetHostMetricsWrapper(final CounterSet counterSet) {
if (counterSet == null)
throw new IllegalArgumentException();
this.counterSet = counterSet;
}
@Override
public String[] getMetricNames() {
final List<String> list = new LinkedList<String>();
@SuppressWarnings("rawtypes")
final Iterator<ICounter> itr = counterSet
.getCounters(null/* filter */);
while (itr.hasNext()) {
final ICounter<?> c = itr.next();
final String path = c.getPath();
list.add(path);
}
return list.toArray(new String[list.size()]);
}
@SuppressWarnings("rawtypes")
@Override
public Number getNumeric(final String name) {
if (name == null)
throw new IllegalArgumentException();
final ICounterNode c = counterSet.getPath(name);
if (c == null) {
// Not found.
return null;
}
if (!c.isCounter()) {
// Not a counter (an abstract node, not a leaf).
return null;
}
return (Number) ((ICounter) c).getValue();
}
}