LogicalScopeProvider (Flink : Metrics : Core 2.0.0 API)

```
@Public
public interface LogicalScopeProvider
```
Extension for metric groups that support logical scopes.
ATTENTION: This interface is *not* meant for the long-term; it merely removes the need for reporters to depend on flink-runtime in order to access the logical scope. Once the logical scope is properly exposed this interface *will* be removed.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static LogicalScopeProvider`	`castFrom(MetricGroup metricGroup)`	Casts the given metric group to a `LogicalScopeProvider`, if it implements the interface.
`String`	`getLogicalScope(CharacterFilter filter)`	Returns the logical scope for the metric group, for example `"taskmanager.job.task"`, with the given filter being applied to all scope components.
`String`	`getLogicalScope(CharacterFilter filter, char delimiter)`	Returns the logical scope for the metric group, for example `"taskmanager.job.task"`, with the given filter being applied to all scope components and the given delimiter being used to concatenate scope components.
`MetricGroup`	`getWrappedMetricGroup()`	Returns the underlying metric group.

- Method Detail
  - getLogicalScope
```
String getLogicalScope(CharacterFilter filter)
```
    Returns the logical scope for the metric group, for example "taskmanager.job.task", with the given filter being applied to all scope components.
    
    Parameters:
    
    filter - filter to apply to all scope components
    
    Returns:
    
    logical scope
  - getLogicalScope
```
String getLogicalScope(CharacterFilter filter,
                       char delimiter)
```
    Returns the logical scope for the metric group, for example "taskmanager.job.task", with the given filter being applied to all scope components and the given delimiter being used to concatenate scope components.
    
    Parameters:
    
    filter - filter to apply to all scope components
    
    delimiter - delimiter to use for concatenating scope components
    
    Returns:
    
    logical scope
  - getWrappedMetricGroup
```
MetricGroup getWrappedMetricGroup()
```
    Returns the underlying metric group.
  - castFrom
```
static LogicalScopeProvider castFrom(MetricGroup metricGroup)
                              throws IllegalStateException
```
    Casts the given metric group to a LogicalScopeProvider, if it implements the interface.
    
    Parameters:
    
    metricGroup - metric group to cast
    
    Returns:
    
    cast metric group
    
    Throws:
    
    IllegalStateException - if the metric group did not implement the LogicalScopeProvider interface