public class AsyncFile extends Object implements ReadStream<Buffer>, WriteStream<Buffer>
This class also implements ReadStream and
WriteStream. This allows the data to be pumped to and from
other streams, e.g. an HttpClientRequest instance,
using the Pump class
original non RX-ified interface using Vert.x codegen.| Modifier and Type | Field and Description |
|---|---|
static io.vertx.lang.rx.TypeArg<AsyncFile> |
__TYPE_ARG |
| Constructor and Description |
|---|
AsyncFile(AsyncFile delegate) |
AsyncFile(Object delegate) |
| Modifier and Type | Method and Description |
|---|---|
void |
close()
Close the file.
|
void |
close(Handler<AsyncResult<Void>> handler)
Close the file.
|
AsyncFile |
drainHandler(Handler<Void> handler)
Set a drain handler on the stream.
|
void |
end()
Close the file, see
close(). |
void |
end(Buffer data)
Same as
end(io.vertx.reactivex.core.buffer.Buffer) but writes some data to the stream before ending. |
void |
end(Buffer data,
Handler<AsyncResult<Void>> handler)
Same as but with an
handler called when the operation completes |
void |
end(Handler<AsyncResult<Void>> handler)
Close the file, see
close(). |
AsyncFile |
endHandler(Handler<Void> endHandler)
Set an end handler.
|
boolean |
equals(Object o) |
AsyncFile |
exceptionHandler(Handler<Throwable> handler)
Set an exception handler on the read stream.
|
AsyncFile |
fetch(long amount)
Fetch the specified
amount of elements. |
AsyncFile |
flush()
Flush any writes made to this file to underlying persistent storage.
|
AsyncFile |
flush(Handler<AsyncResult<Void>> handler)
Same as
flush() but the handler will be called when the flush is complete or if an error occurs |
AsyncFile |
getDelegate() |
long |
getWritePos() |
AsyncFile |
handler(Handler<Buffer> handler)
Set a data handler.
|
int |
hashCode() |
static AsyncFile |
newInstance(AsyncFile arg) |
AsyncFile |
pause()
Pause the
ReadStream, it sets the buffer in fetch mode and clears the actual demand. |
Pipe<Buffer> |
pipe()
Pause this stream and return a to transfer the elements of this stream to a destination .
|
void |
pipeTo(WriteStream<Buffer> dst)
Like
ReadStream.pipeTo(io.vertx.reactivex.core.streams.WriteStream<T>) but with no completion handler. |
void |
pipeTo(WriteStream<Buffer> dst,
Handler<AsyncResult<Void>> handler)
Pipe this
ReadStream to the WriteStream. |
AsyncFile |
read(Buffer buffer,
int offset,
long position,
int length,
Handler<AsyncResult<Buffer>> handler)
Reads
length bytes of data from the file at position position in the file, asynchronously. |
AsyncFile |
resume()
Resume reading, and sets the buffer in
flowing mode. |
Completable |
rxClose()
Close the file.
|
Completable |
rxEnd()
Close the file, see
close(). |
Completable |
rxEnd(Buffer data)
Same as but with an
handler called when the operation completes |
Completable |
rxFlush()
Same as
flush() but the handler will be called when the flush is complete or if an error occurs |
Completable |
rxPipeTo(WriteStream<Buffer> dst)
Pipe this
ReadStream to the WriteStream. |
Single<Buffer> |
rxRead(Buffer buffer,
int offset,
long position,
int length)
Reads
length bytes of data from the file at position position in the file, asynchronously. |
Completable |
rxWrite(Buffer data)
Same as
write(io.vertx.reactivex.core.buffer.Buffer) but with an handler called when the operation completes |
Completable |
rxWrite(Buffer buffer,
long position)
Write a
Buffer to the file at position position in the file, asynchronously. |
AsyncFile |
setReadBufferSize(int readBufferSize)
Sets the buffer size that will be used to read the data from the file.
|
AsyncFile |
setReadLength(long readLength)
Sets the number of bytes that will be read when using the file as a
ReadStream. |
AsyncFile |
setReadPos(long readPos)
Sets the position from which data will be read from when using the file as a
ReadStream. |
AsyncFile |
setWritePos(long writePos)
Sets the position from which data will be written when using the file as a
WriteStream. |
AsyncFile |
setWriteQueueMaxSize(int maxSize)
Set the maximum size of the write queue to
maxSize. |
Flowable<Buffer> |
toFlowable() |
Observable<Buffer> |
toObservable() |
<any> |
toObserver() |
String |
toString() |
<any> |
toSubscriber() |
AsyncFile |
write(Buffer data)
Write some data to the stream.
|
AsyncFile |
write(Buffer data,
Handler<AsyncResult<Void>> handler)
Same as
write(io.vertx.reactivex.core.buffer.Buffer) but with an handler called when the operation completes |
AsyncFile |
write(Buffer buffer,
long position,
Handler<AsyncResult<Void>> handler)
Write a
Buffer to the file at position position in the file, asynchronously. |
boolean |
writeQueueFull()
This will return
true if there are more bytes in the write queue than the value set using setWriteQueueMaxSize(int) |
clone, finalize, getClass, notify, notifyAll, wait, wait, waitnewInstance, newInstancenewInstance, newInstancenewInstancepublic static final io.vertx.lang.rx.TypeArg<AsyncFile> __TYPE_ARG
public AsyncFile(AsyncFile delegate)
public AsyncFile(Object delegate)
public AsyncFile getDelegate()
getDelegate in interface ReadStream<Buffer>getDelegate in interface StreamBasegetDelegate in interface WriteStream<Buffer>public Observable<Buffer> toObservable()
toObservable in interface ReadStream<Buffer>public Flowable<Buffer> toFlowable()
toFlowable in interface ReadStream<Buffer>public <any> toObserver()
public <any> toSubscriber()
public void end(Buffer data)
end(io.vertx.reactivex.core.buffer.Buffer) but writes some data to the stream before ending.end in interface WriteStream<Buffer>data - the data to writepublic void end(Buffer data, Handler<AsyncResult<Void>> handler)
handler called when the operation completesend in interface WriteStream<Buffer>data - handler - public Completable rxEnd(Buffer data)
handler called when the operation completesdata - public boolean writeQueueFull()
true if there are more bytes in the write queue than the value set using setWriteQueueMaxSize(int)writeQueueFull in interface WriteStream<Buffer>public Pipe<Buffer> pipe()
WriteStream.pipe in interface ReadStream<Buffer>public void pipeTo(WriteStream<Buffer> dst)
ReadStream.pipeTo(io.vertx.reactivex.core.streams.WriteStream<T>) but with no completion handler.pipeTo in interface ReadStream<Buffer>dst - public void pipeTo(WriteStream<Buffer> dst, Handler<AsyncResult<Void>> handler)
ReadStream to the WriteStream.
Elements emitted by this stream will be written to the write stream until this stream ends or fails.
Once this stream has ended or failed, the write stream will be ended and the handler will be
called with the result.
pipeTo in interface ReadStream<Buffer>dst - the destination write streamhandler - public Completable rxPipeTo(WriteStream<Buffer> dst)
ReadStream to the WriteStream.
Elements emitted by this stream will be written to the write stream until this stream ends or fails.
Once this stream has ended or failed, the write stream will be ended and the handler will be
called with the result.
dst - the destination write streampublic AsyncFile handler(Handler<Buffer> handler)
ReadStreamhandler in interface ReadStream<Buffer>public AsyncFile pause()
ReadStreamReadStream, it sets the buffer in fetch mode and clears the actual demand.
While it's paused, no data will be sent to the data handler.
pause in interface ReadStream<Buffer>public AsyncFile resume()
ReadStreamflowing mode.
If the ReadStream has been paused, reading will recommence on it.resume in interface ReadStream<Buffer>public AsyncFile endHandler(Handler<Void> endHandler)
ReadStreamendHandler in interface ReadStream<Buffer>public AsyncFile write(Buffer data)
WriteStreamWriteStream.writeQueueFull() method before writing. This is done automatically if using a Pump.write in interface WriteStream<Buffer>data - the data to writepublic AsyncFile write(Buffer data, Handler<AsyncResult<Void>> handler)
write(io.vertx.reactivex.core.buffer.Buffer) but with an handler called when the operation completeswrite in interface WriteStream<Buffer>data - handler - public Completable rxWrite(Buffer data)
write(io.vertx.reactivex.core.buffer.Buffer) but with an handler called when the operation completesdata - public AsyncFile setWriteQueueMaxSize(int maxSize)
WriteStreammaxSize. You will still be able to write to the stream even
if there is more than maxSize items in the write queue. This is used as an indicator by classes such as
Pump to provide flow control.
The value is defined by the implementation of the stream, e.g in bytes for a
NetSocket, the number of Message for a
MessageProducer, etc...setWriteQueueMaxSize in interface WriteStream<Buffer>maxSize - the max size of the write streampublic AsyncFile drainHandler(Handler<Void> handler)
WriteStreamPump for an example of this being used.
The stream implementation defines when the drain handler, for example it could be when the queue size has been
reduced to maxSize / 2.drainHandler in interface WriteStream<Buffer>handler - the handlerpublic AsyncFile exceptionHandler(Handler<Throwable> handler)
ReadStreamexceptionHandler in interface ReadStream<Buffer>exceptionHandler in interface StreamBaseexceptionHandler in interface WriteStream<Buffer>handler - the exception handlerpublic AsyncFile fetch(long amount)
ReadStreamamount of elements. If the ReadStream has been paused, reading will
recommence with the specified amount of items, otherwise the specified amount will
be added to the current stream demand.fetch in interface ReadStream<Buffer>public void end()
close().end in interface WriteStream<Buffer>public void end(Handler<AsyncResult<Void>> handler)
close().end in interface WriteStream<Buffer>handler - public Completable rxEnd()
close().public void close()
public void close(Handler<AsyncResult<Void>> handler)
handler - the handlerpublic Completable rxClose()
public AsyncFile write(Buffer buffer, long position, Handler<AsyncResult<Void>> handler)
Buffer to the file at position position in the file, asynchronously.
If position lies outside of the current size
of the file, the file will be enlarged to encompass it.
When multiple writes are invoked on the same file there are no guarantees as to order in which those writes actually occur
The handler will be called when the write is complete, or if an error occurs.
buffer - the buffer to writeposition - the position in the file to write it athandler - the handler to call when the write is completepublic Completable rxWrite(Buffer buffer, long position)
Buffer to the file at position position in the file, asynchronously.
If position lies outside of the current size
of the file, the file will be enlarged to encompass it.
When multiple writes are invoked on the same file there are no guarantees as to order in which those writes actually occur
The handler will be called when the write is complete, or if an error occurs.
buffer - the buffer to writeposition - the position in the file to write it atpublic AsyncFile read(Buffer buffer, int offset, long position, int length, Handler<AsyncResult<Buffer>> handler)
length bytes of data from the file at position position in the file, asynchronously.
The read data will be written into the specified Buffer buffer at position offset.
If data is read past the end of the file then zero bytes will be read.
When multiple reads are invoked on the same file there are no guarantees as to order in which those reads actually occur.
The handler will be called when the close is complete, or if an error occurs.
buffer - the buffer to read intooffset - the offset into the buffer where the data will be readposition - the position in the file where to start readinglength - the number of bytes to readhandler - the handler to call when the write is completepublic Single<Buffer> rxRead(Buffer buffer, int offset, long position, int length)
length bytes of data from the file at position position in the file, asynchronously.
The read data will be written into the specified Buffer buffer at position offset.
If data is read past the end of the file then zero bytes will be read.
When multiple reads are invoked on the same file there are no guarantees as to order in which those reads actually occur.
The handler will be called when the close is complete, or if an error occurs.
buffer - the buffer to read intooffset - the offset into the buffer where the data will be readposition - the position in the file where to start readinglength - the number of bytes to readpublic AsyncFile flush()
If the file was opened with flush set to true then calling this method will have no effect.
The actual flush will happen asynchronously.
public AsyncFile flush(Handler<AsyncResult<Void>> handler)
flush() but the handler will be called when the flush is complete or if an error occurshandler - public Completable rxFlush()
flush() but the handler will be called when the flush is complete or if an error occurspublic AsyncFile setReadPos(long readPos)
ReadStream.readPos - the position in the filepublic AsyncFile setReadLength(long readLength)
ReadStream.readLength - the bytes that will be read from the filepublic AsyncFile setWritePos(long writePos)
WriteStream.writePos - the position in the filepublic long getWritePos()
public AsyncFile setReadBufferSize(int readBufferSize)
readBufferSize - the buffer sizeCopyright © 2023 Eclipse. All rights reserved.