/
LoadMonitor.groovy
116 lines (95 loc) · 4 KB
/
LoadMonitor.groovy
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/*
* The MIT License
*
* Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package hudson.util
import hudson.model.Computer
import jenkins.util.Timer
import jenkins.model.Jenkins
import hudson.model.Label
import hudson.model.Queue.BlockedItem
import hudson.model.Queue.BuildableItem
import hudson.model.Queue.WaitingItem
import hudson.triggers.SafeTimerTask
import java.text.DateFormat
import java.util.concurrent.TimeUnit
/**
* Spits out the load information.
*
* <p>
* I'm using this code to design the auto scaling feature.
* In future this might be useful data to expose to the UI.
*
* @author Kohsuke Kawaguchi
*/
public class LoadMonitorImpl extends SafeTimerTask {
private final File dataFile;
private List<String> labels;
public LoadMonitorImpl(File dataFile) {
this.dataFile = dataFile;
labels = Jenkins.getInstance().labels*.name;
printHeaders();
Timer.get().scheduleAtFixedRate(this,0,10*1000, TimeUnit.MILLISECONDS);
}
private String quote(Object s) { "\"${s}\""; }
protected void printHeaders() {
def headers = ["# of executors","# of busy executors","BuildableItems in Q","BuildableItem avg wait time"];
def data = ["timestamp"];
data += headers;
data += ["WaitingItems in Q","BlockedItems in Q"];
for( String label : labels)
data += headers.collect { "${it} (${label}}" }
dataFile.append(data.collect({ quote(it) }).join(",")+"\n");
}
@Override
protected void doRun() {
def now = new Date();
def data = [];
data.add(quote(FORMATTER.format(now)));
def h = Jenkins.getInstance();
def items = h.queue.items;
def filterByType = {Class type -> items.findAll { type.isInstance(it) } }
def builder = {List<Computer> cs, Closure itemFilter ->
// number of total executor, number of busy executor
data.add(cs.sum { it.isOffline() ? 0 : it.numExecutors });
data.add(cs.sum {Computer c ->
c.executors.findAll { !it.isIdle() }.size()
});
// queue statistics
def is = filterByType(BuildableItem).findAll(itemFilter);
data.add(is.size());
data.add(is.sum {BuildableItem bi -> now.time - bi.buildableStartMilliseconds }?:0 / Math.max(1,is.size()) );
};
// for the whole thing
builder(Arrays.asList(h.computers),{ it->true });
data.add(filterByType(WaitingItem).size());
data.add(filterByType(BlockedItem).size());
// per label stats
for (String label : labels) {
Label l = h.getLabel(label)
builder(l.nodes.collect { it.toComputer() }) { BuildableItem bi -> bi.task.assignedLabel==l };
}
dataFile.append(data.join(",")+"\n");
}
private static final DateFormat FORMATTER = DateFormat.getDateTimeInstance();
}
new LoadMonitorImpl(new File("/files/hudson/load.txt"));