public ProcessRuntimeMetrics getRuntimeMetrics(final List<ProcessIdentifier> identifiers) {
final ProcessRuntimeMetrics totalMetrics = new ProcessRuntimeMetrics();
long sumOfRuntimes = 0;
long sumOfInstances = 0;
for (final ProcessIdentifier identifier : identifiers) {
final ProcessRuntimeMetrics procMetrics = getRuntimeMetrics(identifier);
sumOfRuntimes += procMetrics.getMeanRuntime() * procMetrics.getNumberOfInstances();
sumOfInstances += procMetrics.getNumberOfInstances();
if ((totalMetrics.getMinRuntime() == 0)
|| (totalMetrics.getMinRuntime() > procMetrics.getMinRuntime())) {
totalMetrics.setMinRuntime(procMetrics.getMinRuntime());
}
if ((totalMetrics.getMaxRuntime() == 0)
|| (totalMetrics.getMaxRuntime() < procMetrics.getMaxRuntime())) {
totalMetrics.setMaxRuntime(procMetrics.getMaxRuntime());
}
}
totalMetrics.setNumberOfInstances(sumOfInstances);
if (sumOfInstances != 0) {
totalMetrics.setMeanRuntime(sumOfRuntimes / sumOfInstances);
} else {
totalMetrics.setMeanRuntime(0);
}
return totalMetrics;
}
private ProcessRuntimeMetrics getRuntimeMetrics(final ProcessIdentifier identifier) {
final CriteriaBuilder cb = em.getCriteriaBuilder();
final CriteriaQuery<MeasuredProcessInstance> cq = cb.createQuery(MeasuredProcessInstance.class);
final Root<MeasuredProcessInstance> processInstanceRoot =
cq.from(MeasuredProcessInstance.class);
cq.where(
cb.equal(
processInstanceRoot
.get(MeasuredProcessInstance_.identifier)
.get(ProcessInstanceIdentifier_.metricsId),
identifier.getMetricsId()),
cb.equal(
processInstanceRoot
.get(MeasuredProcessInstance_.identifier)
.get(ProcessInstanceIdentifier_.packageName),
identifier.getPackageName()),
cb.equal(
processInstanceRoot
.get(MeasuredProcessInstance_.identifier)
.get(ProcessInstanceIdentifier_.processId),
identifier.getProcessId()));
final List<MeasuredProcessInstance> instances = em.createQuery(cq).getResultList();
final ProcessRuntimeMetrics metrics = new ProcessRuntimeMetrics();
long totalRuntime = 0L;
for (final MeasuredProcessInstance instance : instances) {
if (instance.getTimeToComplete() == null) {
continue;
}
final long runtime = instance.getTimeToComplete().longValue();
totalRuntime += runtime;
if ((metrics.getMinRuntime() == 0) || (metrics.getMinRuntime() > runtime)) {
metrics.setMinRuntime(runtime);
}
if ((metrics.getMaxRuntime() == 0) || (metrics.getMaxRuntime() < runtime)) {
metrics.setMaxRuntime(runtime);
}
}
final long totalInstances = instances.size();
metrics.setNumberOfInstances(totalInstances);
if (totalInstances != 0) {
metrics.setMeanRuntime(totalRuntime / totalInstances);
} else {
metrics.setMeanRuntime(0);
}
return metrics;
}