Package io.helidon.media.common

Class PublisherInputStream

java.lang.Object

java.io.InputStream

io.helidon.media.common.PublisherInputStream

All Implemented Interfaces:

Flow.Publisher<DataChunk>, Closeable, AutoCloseable

public class PublisherInputStream
extends InputStream
implements Flow.Publisher<DataChunk>

An subscriber that can subscribe to a source of ByteBuffer data chunks and then make them available for consumption via standard blocking InputStream API.

Constructor Summary

Constructors

Constructor and Description
PublisherInputStream(Flow.Publisher<DataChunk> originalPublisher) Wraps the supplied publisher and adds a blocking InputStream based nature.

Method Summary

Modifier and Type	Method and Description
int	read()
void	subscribe(Flow.Subscriber<? super DataChunk> subscriber) Adds the given Subscriber if possible.

Methods inherited from class java.io.InputStream

available, close, mark, markSupported, read, read, readAllBytes, readNBytes, reset, skip, transferTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PublisherInputStream

public PublisherInputStream(Flow.Publisher<DataChunk> originalPublisher)

Wraps the supplied publisher and adds a blocking InputStream based nature. It is illegal to subscribe to the returned publisher.

Parameters:

originalPublisher - the original publisher to wrap

Method Detail

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

subscribe

public void subscribe(Flow.Subscriber<? super DataChunk> subscriber)

Description copied from interface: Flow.Publisher

Adds the given Subscriber if possible. If already subscribed, or the attempt to subscribe fails due to policy violations or errors, the Subscriber's onError method is invoked with an IllegalStateException. Otherwise, the Subscriber's onSubscribe method is invoked with a new Flow.Subscription. Subscribers may enable receiving items by invoking the request method of this Subscription, and may unsubscribe by invoking its cancel method.

Specified by:

subscribe in interface Flow.Publisher<DataChunk>

Parameters:

subscriber - the subscriber