@ManagedAttribute(description = "The approximate percentage of active threads in the thread pool")
@Metric(
displayName = "Percentage of Active Threads",
units = Units.PERCENTAGE,
displayType = DisplayType.SUMMARY)
public double getUsagePercentage() {
SchedulerThread current = schedulerThread;
if (current == null) {
return 0D;
}
int max = current.getExecutorService().getMaximumPoolSize();
int actual = current.getExecutorService().getActiveCount();
double percentage = actual * 100.0 / max;
return percentage > 100 ? 100.0 : percentage;
}
@ManagedOperation(description = "Set the idle time of a thread in the thread pool (milliseconds)")
@Operation(displayName = "Set Keep Alive Time of Idle Threads")
public void setKeepAliveTime(long milliseconds) {
SchedulerThread current = schedulerThread;
if (!enabled || current == null) {
return;
}
current.getExecutorService().setKeepAliveTime(milliseconds, TimeUnit.MILLISECONDS);
}
@ManagedOperation(description = "Set the maximum number of threads in the thread pool")
@Operation(displayName = "Set Maximum Number Of Threads")
public void setMaximumPoolSize(int size) {
SchedulerThread current = schedulerThread;
if (!enabled || current == null) {
return;
}
current.getExecutorService().setMaximumPoolSize(size);
}
@ManagedAttribute(
description = "The keep alive time of an idle thread in the thread pool (milliseconds)")
@Metric(
displayName = "Keep Alive Time of a Idle Thread",
units = Units.MILLISECONDS,
displayType = DisplayType.DETAIL)
public long getKeepAliveTime() {
SchedulerThread current = schedulerThread;
return current == null
? 0
: current.getExecutorService().getKeepAliveTime(TimeUnit.MILLISECONDS);
}
@ManagedAttribute(description = "The maximum number of threads in the thread pool")
@Metric(displayName = "Maximum Number of Threads", displayType = DisplayType.DETAIL)
public int getMaximumPoolSize() {
SchedulerThread current = schedulerThread;
return current == null ? 0 : current.getExecutorService().getMaximumPoolSize();
}