Pipe (Vert.x Stack - Docs 4.2.7 API)

```
public interface Pipe<T>
```
Pipe data from a ReadStream to a WriteStream and performs flow control where necessary to prevent the write stream buffer from getting overfull.
Instances of this class read items from a ReadStream and write them to a WriteStream. If data can be read faster than it can be written this could result in the write queue of the WriteStream growing without bound, eventually causing it to exhaust all available RAM.
To prevent this, after each write, instances of this class check whether the write queue of the WriteStream is full, and if so, the ReadStream is paused, and a drainHandler is set on the WriteStream.
When the WriteStream has processed half of its backlog, the drainHandler will be called, which results in the pump resuming the ReadStream.
This class can be used to pipe from any ReadStream to any WriteStream, e.g. from an HttpServerRequest to an AsyncFile, or from NetSocket to a WebSocket.
Please see the documentation for more information.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`void`	`close()` Close the pipe.
`Pipe<T>`	`endOnComplete(boolean end)` Set to `true` to call `WriteStream.end()` when the source `ReadStream` completes, `false` otherwise.
`Pipe<T>`	`endOnFailure(boolean end)` Set to `true` to call `WriteStream.end()` when the source `ReadStream` fails, `false` otherwise.
`Pipe<T>`	`endOnSuccess(boolean end)` Set to `true` to call `WriteStream.end()` when the source `ReadStream` succeeds, `false` otherwise.
`default Future<Void>`	`to(WriteStream<T> dst)` Same as `to(WriteStream, Handler)` but returns a `Future` of the asynchronous result
`void`	`to(WriteStream<T> dst, Handler<AsyncResult<Void>> completionHandler)` Start to pipe the elements to the destination `WriteStream`.

- Method Detail
  - endOnFailure
```
Pipe<T> endOnFailure(boolean end)
```
    Set to true to call WriteStream.end() when the source ReadStream fails, false otherwise.
    
    Parameters:
    
    end - true to end the stream on a source ReadStream failure
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - endOnSuccess
```
Pipe<T> endOnSuccess(boolean end)
```
    Set to true to call WriteStream.end() when the source ReadStream succeeds, false otherwise.
    
    Parameters:
    
    end - true to end the stream on a source ReadStream success
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - endOnComplete
```
Pipe<T> endOnComplete(boolean end)
```
    Set to true to call WriteStream.end() when the source ReadStream completes, false otherwise.
    Calling this overwrites endOnFailure(boolean) and endOnSuccess(boolean).
    
    Parameters:
    
    end - true to end the stream on a source ReadStream completion
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - to
```
default Future<Void> to(WriteStream<T> dst)
```
    Same as to(WriteStream, Handler) but returns a Future of the asynchronous result
  - to
```
void to(WriteStream<T> dst,
        Handler<AsyncResult<Void>> completionHandler)
```
    Start to pipe the elements to the destination WriteStream.
    When the operation fails with a write error, the source stream is resumed.
    
    Parameters:
    
    dst - the destination write stream
    
    completionHandler - the handler called when the pipe operation completes
  - close
```
void close()
```
    Close the pipe.
    The streams handlers will be unset and the read stream resumed unless it is already ended.

Interface Pipe<T>

Method Summary

Method Detail

endOnFailure

endOnSuccess

endOnComplete

to

to

close