IOReactorMetricsListener

```
public interface IOReactorMetricsListener
```
A listener interface for receiving metrics related to the I/O reactor's thread pool performance and status.
The implementing class can monitor and act upon important metrics such as active threads, saturation levels, and resource starvation.

Since:

5.4

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onQueueWaitTime(long averageWaitTimeMillis)`	Notifies about the average wait time for connection requests in the queue.
`void`	`onResourceStarvationDetected()`	Invoked when the number of pending connection requests exceeds the maximum allowed connections, indicating possible resource starvation.
`void`	`onThreadPoolSaturation(double saturationPercentage)`	Invoked to report the saturation level of the thread pool as a percentage of the active threads to the maximum allowed connections.
`void`	`onThreadPoolStatus(int activeThreads, int pendingConnections)`	Invoked to report the current status of the thread pool, including active threads and pending connections.

- Method Detail
  - onThreadPoolStatus
```
void onThreadPoolStatus(int activeThreads,
                        int pendingConnections)
```
    Invoked to report the current status of the thread pool, including active threads and pending connections.
    
    Parameters:
    
    activeThreads - The number of active threads handling connections.
    
    pendingConnections - The number of pending connection requests in the queue.
  - onThreadPoolSaturation
```
void onThreadPoolSaturation(double saturationPercentage)
```
    Invoked to report the saturation level of the thread pool as a percentage of the active threads to the maximum allowed connections.
    
    Parameters:
    
    saturationPercentage - The percentage indicating thread pool saturation.
  - onResourceStarvationDetected
```
void onResourceStarvationDetected()
```
    Invoked when the number of pending connection requests exceeds the maximum allowed connections, indicating possible resource starvation.
  - onQueueWaitTime
```
void onQueueWaitTime(long averageWaitTimeMillis)
```
    Notifies about the average wait time for connection requests in the queue.
    
    Parameters:
    
    averageWaitTimeMillis - average time in milliseconds that connection requests spend in the queue.