SourceQueue

All Known Subinterfaces:

SourceQueueWithComplete<T>
```
public interface SourceQueue<T>
```
Method offers next element to a stream and returns future that: - completes with Enqueued if element is consumed by a stream - completes with Dropped when stream dropped offered element - completes with QueueClosed when stream is completed during future is active - completes with Failure(f) when failure to enqueue element from upstream - fails when stream is completed
Additionally when using the backpressure overflowStrategy: - If the buffer is full the Future won't be completed until there is space in the buffer - Calling offer before the Future is completed in this case will return a failed Future
param: elem element to send to a stream

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`scala.concurrent.Future<QueueOfferResult>`	`offer(T elem)`	Method offers next element to a stream and returns future that: - completes with `Enqueued` if element is consumed by a stream - completes with `Dropped` when stream dropped offered element - completes with `QueueClosed` when stream is completed during future is active - completes with `Failure(f)` when failure to enqueue element from upstream - fails when stream is completed
`scala.concurrent.Future<Done>`	`watchCompletion()`	Method returns a `Future` that will be completed if this operator completes, or will be failed when the operator faces an internal failure.

- Method Detail
  - offer
```
scala.concurrent.Future<QueueOfferResult> offer(T elem)
```
    Method offers next element to a stream and returns future that: - completes with Enqueued if element is consumed by a stream - completes with Dropped when stream dropped offered element - completes with QueueClosed when stream is completed during future is active - completes with Failure(f) when failure to enqueue element from upstream - fails when stream is completed
    Additionally when using the backpressure overflowStrategy: - If the buffer is full the Future won't be completed until there is space in the buffer - Calling offer before the Future is completed in this case will return a failed Future
    
    Parameters:
    
    elem - element to send to a stream
    
    Returns:
    
    (undocumented)
  - watchCompletion
```
scala.concurrent.Future<Done> watchCompletion()
```
    Method returns a Future that will be completed if this operator completes, or will be failed when the operator faces an internal failure.
    Note that this only means the elements have been passed downstream, not that downstream has successfully processed them.
    
    Returns:
    
    (undocumented)