MetricRegistry (Flink : 2.0-SNAPSHOT API)

All Known Implementing Classes:

MetricRegistryImpl, NoOpMetricRegistry
```
public interface MetricRegistry
```
Interface for a metric registry.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`addSpan(SpanBuilder spanBuilder)`	Add and log a `Span`.
`char`	`getDelimiter()`	Returns the global delimiter.
`default String`	`getMetricQueryServiceGatewayRpcAddress()`	Returns the gateway of the `MetricQueryService` or null, if none is started.
`int`	`getNumberReporters()`	Returns the number of registered reporters.
`ScopeFormats`	`getScopeFormats()`	Returns the scope formats.
`void`	`register(Metric metric, String metricName, AbstractMetricGroup group)`	Registers a new `Metric` with this registry.
`void`	`unregister(Metric metric, String metricName, AbstractMetricGroup group)`	Un-registers the given `Metric` with this registry.

- Method Detail
  - getDelimiter
```
char getDelimiter()
```
    Returns the global delimiter.
    
    Returns:
    
    global delimiter
  - getNumberReporters
```
int getNumberReporters()
```
    Returns the number of registered reporters.
  - addSpan
```
void addSpan(SpanBuilder spanBuilder)
```
    Add and log a Span.
  - register
```
void register(Metric metric,
              String metricName,
              AbstractMetricGroup group)
```
    Registers a new Metric with this registry.
    
    Parameters:
    
    metric - the metric that was added
    
    metricName - the name of the metric
    
    group - the group that contains the metric
  - unregister
```
void unregister(Metric metric,
                String metricName,
                AbstractMetricGroup group)
```
    Un-registers the given Metric with this registry.
    
    Parameters:
    
    metric - the metric that should be removed
    
    metricName - the name of the metric
    
    group - the group that contains the metric
  - getScopeFormats
```
ScopeFormats getScopeFormats()
```
    Returns the scope formats.
    
    Returns:
    
    scope formats
  - getMetricQueryServiceGatewayRpcAddress
```
@Nullable
default String getMetricQueryServiceGatewayRpcAddress()
```
    Returns the gateway of the MetricQueryService or null, if none is started.
    
    Returns:
    
    Gateway of the MetricQueryService or null, if none is started