IntervalMetricReader (OpenTelemetry SDK Metrics)

java.lang.Object
- io.opentelemetry.sdk.metrics.export.IntervalMetricReader

```
public final class IntervalMetricReader
extends Object
```
Wraps a list of MetricProducers and automatically reads and exports the metrics every export interval. Metrics may also be dropped when it becomes time to export again, and there is an export in progress.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static IntervalMetricReaderBuilder`	`builder()`	Returns a new `IntervalMetricReaderBuilder` for `IntervalMetricReader`.
`io.opentelemetry.sdk.common.CompletableResultCode`	`forceFlush()`	Requests the `IntervalMetricReader` to export current metrics and returns a `CompletableResultCode` which is completed when the flush is finished.
`static io.opentelemetry.sdk.common.CompletableResultCode`	`forceFlushGlobal()`	Force flushes the globally registered `IntervalMetricReader` if available, or does nothing otherwise.
`static void`	`resetGlobalForTest()`	Resets the globally registered `IntervalMetricReader` if available, or does nothing otherwise.
`io.opentelemetry.sdk.common.CompletableResultCode`	`shutdown()`	Stops the scheduled task and calls export one more time.
`IntervalMetricReader`	`start()`	Starts this `IntervalMetricReader` to report to the configured exporter.
`IntervalMetricReader`	`startAndRegisterGlobal()`	Starts this `IntervalMetricReader` and registers it as the global `IntervalMetricReader`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - forceFlushGlobal
```
public static io.opentelemetry.sdk.common.CompletableResultCode forceFlushGlobal()
```
    Force flushes the globally registered IntervalMetricReader if available, or does nothing otherwise.
  - resetGlobalForTest
```
public static void resetGlobalForTest()
```
    Resets the globally registered IntervalMetricReader if available, or does nothing otherwise. This is only meant to be used from tests which need to reconfigure IntervalMetricReader.
  - shutdown
```
public io.opentelemetry.sdk.common.CompletableResultCode shutdown()
```
    Stops the scheduled task and calls export one more time.
  - builder
```
public static IntervalMetricReaderBuilder builder()
```
    Returns a new IntervalMetricReaderBuilder for IntervalMetricReader.
    
    Returns:
    
    a new IntervalMetricReaderBuilder for IntervalMetricReader.
  - forceFlush
```
public io.opentelemetry.sdk.common.CompletableResultCode forceFlush()
```
    Requests the IntervalMetricReader to export current metrics and returns a CompletableResultCode which is completed when the flush is finished.
  - start
```
public IntervalMetricReader start()
```
    Starts this IntervalMetricReader to report to the configured exporter.
  - startAndRegisterGlobal
```
public IntervalMetricReader startAndRegisterGlobal()
```
    Starts this IntervalMetricReader and registers it as the global IntervalMetricReader.