BufferingStreamObserver (fn-execution 2.44.0 API)

java.lang.Object
- org.apache.beam.sdk.fn.stream.BufferingStreamObserver<T>

All Implemented Interfaces:

org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.StreamObserver<T>
```
@ThreadSafe
public final class BufferingStreamObserver<T extends @NonNull java.lang.Object>
extends java.lang.Object
implements org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.StreamObserver<T>
```
A thread safe StreamObserver which uses a bounded queue to pass elements to a processing thread responsible for interacting with the underlying CallStreamObserver.
Flow control with the underlying CallStreamObserver is handled with a Phaser which waits for advancement of the phase if the CallStreamObserver is not ready. Callers are expected to advance the Phaser whenever the underlying CallStreamObserver becomes ready.

Constructor Summary

Constructors
Constructor	Description
`BufferingStreamObserver(java.util.concurrent.Phaser phaser, org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.CallStreamObserver<T> outboundObserver, java.util.concurrent.ExecutorService executor, int bufferSize)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getBufferSize()`
`void`	`onCompleted()`
`void`	`onError(java.lang.Throwable t)`
`void`	`onNext(T value)`

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

- Constructor Detail
  - BufferingStreamObserver
```
public BufferingStreamObserver(java.util.concurrent.Phaser phaser,
                               org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.CallStreamObserver<T> outboundObserver,
                               java.util.concurrent.ExecutorService executor,
                               int bufferSize)
```
- Method Detail
  - onNext
```
public void onNext(T value)
```
    Specified by:
    
    onNext in interface org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.StreamObserver<T extends @NonNull java.lang.Object>
  - onError
```
public void onError(java.lang.Throwable t)
```
    Specified by:
    
    onError in interface org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.StreamObserver<T extends @NonNull java.lang.Object>
  - onCompleted
```
public void onCompleted()
```
    Specified by:
    
    onCompleted in interface org.apache.beam.vendor.grpc.v1p48p1.io.grpc.stub.StreamObserver<T extends @NonNull java.lang.Object>
  - getBufferSize
```
public int getBufferSize()
```