RegisteredReader

java.lang.Object
- io.opentelemetry.sdk.metrics.internal.export.RegisteredReader

```
public class RegisteredReader
extends java.lang.Object
```
Represents a MetricReader registered with SdkMeterProvider.
This class is internal and is hence not for public use. Its APIs are unstable and can change at any time.

Field Summary

Fields
Modifier and Type	Field	Description
`private int`	`id`
`private static java.util.concurrent.atomic.AtomicInteger`	`ID_COUNTER`
`private long`	`lastCollectEpochNanos`
`private MetricReader`	`metricReader`
`private ViewRegistry`	`viewRegistry`

Constructor Summary

Constructors
Modifier Constructor Description

private RegisteredReader(MetricReader metricReader, ViewRegistry viewRegistry)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static RegisteredReader`	`create(MetricReader reader, ViewRegistry viewRegistry)`	Construct a new collection info object storing information for collection against a reader.
`boolean`	`equals(java.lang.Object o)`
`long`	`getLastCollectEpochNanos()`	Get the time of the last collection for the reader.
`MetricReader`	`getReader()`
`ViewRegistry`	`getViewRegistry()`	Get the `ViewRegistry` for the reader.
`int`	`hashCode()`
`void`	`setLastCollectEpochNanos(long epochNanos)`	Set the time the last collection took place for the reader.
`java.lang.String`	`toString()`

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

Field Detail

ID_COUNTER

private static final java.util.concurrent.atomic.AtomicInteger ID_COUNTER

id
```
private final int id
```

metricReader

private final MetricReader metricReader

viewRegistry

private final ViewRegistry viewRegistry

lastCollectEpochNanos

private volatile long lastCollectEpochNanos

Constructor Detail

RegisteredReader

private RegisteredReader(MetricReader metricReader,
                         ViewRegistry viewRegistry)

Method Detail
- create
```
public static RegisteredReader create(MetricReader reader,
                                      ViewRegistry viewRegistry)
```
  Construct a new collection info object storing information for collection against a reader.
- getReader
```
public MetricReader getReader()
```
- setLastCollectEpochNanos
```
public void setLastCollectEpochNanos(long epochNanos)
```
  Set the time the last collection took place for the reader.
  Called by SdkMeterProvider's MetricProducer after collection.
- getLastCollectEpochNanos
```
public long getLastCollectEpochNanos()
```
  Get the time of the last collection for the reader.
  Used to compute the PointData.getStartEpochNanos() for instruments aggregations with AggregationTemporality.DELTA temporality.
- getViewRegistry
```
public ViewRegistry getViewRegistry()
```
  Get the ViewRegistry for the reader.
- hashCode
```
public int hashCode()
```
  Overrides:
  
  hashCode in class java.lang.Object
- equals
```
public boolean equals(@Nullable
                      java.lang.Object o)
```
  Overrides:
  
  equals in class java.lang.Object
- toString
```
public java.lang.String toString()
```
  Overrides:
  
  toString in class java.lang.Object