@Override
public Number calculate(Iterable<IScheduledTask> tasks, Range<Long> timeFrame) {
Iterable<IScheduledTask> activeTasks =
FluentIterable.from(tasks)
.filter(Predicates.compose(Predicates.in(Tasks.ACTIVE_STATES), Tasks.GET_STATUS));
List<Long> waitTimes = Lists.newLinkedList();
for (IScheduledTask task : activeTasks) {
long pendingTs = 0;
for (ITaskEvent event : task.getTaskEvents()) {
if (event.getStatus() == PENDING) {
pendingTs = event.getTimestamp();
} else if (event.getStatus() == status && timeFrame.contains(event.getTimestamp())) {
if (pendingTs == 0) {
throw new IllegalArgumentException(
"SLA: missing PENDING status for:" + task.getAssignedTask().getTaskId());
}
waitTimes.add(event.getTimestamp() - pendingTs);
break;
}
}
}
return SlaUtil.percentile(waitTimes, 50.0);
}
@Override
public Number calculate(Iterable<IScheduledTask> tasks, final Range<Long> timeFrame) {
List<Long> uptimes =
FluentIterable.from(tasks)
.filter(IS_RUNNING)
.transform(
Functions.compose(
new Function<ITaskEvent, Long>() {
@Override
public Long apply(ITaskEvent event) {
return timeFrame.upperEndpoint() - event.getTimestamp();
}
},
TASK_TO_EVENT))
.toList();
return (int) Math.floor((double) SlaUtil.percentile(uptimes, percentile) / 1000);
}
