MonitorListener

```
public interface MonitorListener
```
The MonitorListener is used by Monitorable services to send notifications when a StatusVariable value is changed. The MonitorListener should register itself as a service at the OSGi Service Registry. This interface must (only) be implemented by the Monitor Admin component.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`updated(java.lang.String monitorableId, StatusVariable statusVariable)`	Callback for notification of a `StatusVariable` change.

- Method Detail
  - updated
```
void updated(java.lang.String monitorableId,
             StatusVariable statusVariable)
      throws java.lang.IllegalArgumentException
```
    Callback for notification of a StatusVariable change.
    
    Parameters:
    
    monitorableId - the identifier of the Monitorable instance reporting the change
    
    statusVariable - the StatusVariable that has changed
    
    Throws:
    
    java.lang.IllegalArgumentException - if the specified monitorable ID is invalid (null, empty, or contains illegal characters) or points to a non-existing Monitorable, or if statusVariable is null