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18.10. Gathering Metric Data of Managed Servers: metrics.js
JBoss ON collects a number of metrics for each resource type. This information can be retrieved by using the
findLiveData method, which returns the current active value for the resource.
This script takes two arguments, the groupName and the metricName. As with the other scripts, this searches for the group and then the resource by the group ID.
function usage() {
println("Usage: metrics groupName metricName");
throw "Illegal arguments";
}
if( args.length < 2 ) usage();
var groupName = args[0];
var metricName = args[1];
groupcriteria = new ResourceGroupCriteria();
groupcriteria.addFilterName(groupName);
var groups = ResourceGroupManager.findResourceGroupsByCriteria(groupcriteria);
if( groups != null ) {
if( groups.size() > 1 ) {
println("Found more than one group.");
}
else if( groups.size() == 1 ) {
group = groups.get(0);
}
}
criteria = new ResourceCriteria();
var groupArray= new Array();
groupArray[0]=group.id;
criteria.addFilterExplicitGroupIds(groupArray);
The actual metric search looks for the metrics available to the resource type (hard-coded to JBoss AS 5 in this example). The metric itself is identified solely by the metricName argument.
var rt = ResourceTypeManager.getResourceTypeByNameAndPlugin("JBossAS 5 Server","JBossAS5");
var mdc = MeasurementDefinitionCriteria();
mdc.addFilterDisplayName(metricName);
mdc.addFilterResourceTypeId(rt.id);
var mdefs = MeasurementDefinitionManager.findMeasurementDefinitionsByCriteria(mdc);
var resources = ResourceManager.findResourcesByCriteria(criteria);
var metrics = MeasurementDataManager.findLiveData(resources.get(0).id, [mdefs.get(0).id]);
if( metrics !=null ) {
println(" Metric value for " + resources.get(0).id + " is " + metrics );
}
When the script is run, it prints the resource ID and the current value for the metric.
[jsmith@server cli]$ ./wrapper.sh metrics myGroup "Active Thread Count" Remote server version is: 3.0.1.GA (b2cb23b:859b914) Login successful Metric value for 10003 is [MeasurementDataNumeric[value=[64.0], MeasurementData [MeasurementDataPK: timestamp=[Wed Feb 15 22:14:38 EST 2012], scheduleId=[1]]]]
