Package io.helidon.common.reactive.valve

Class Tank<T>

java.lang.Object

io.helidon.common.reactive.valve.Tank<T>

Type Parameters:

T - a type of items produced by Valve API

All Implemented Interfaces:

Pausable, Valve<T>, AutoCloseable, Iterable<T>, Collection<T>, BlockingQueue<T>, Queue<T>

public class Tank<T>
extends Object
implements Valve<T>, BlockingQueue<T>, AutoCloseable

Tank of events is a closeable FIFO queue with a limited size implementing Valve reactive API.

Constructor Summary

Constructors

Constructor and Description
Tank(int capacity) Creates new instance.

Method Summary

Modifier and Type	Method and Description
boolean	add(T t)
boolean	addAll(Collection<? extends T> c)
void	clear()
void	close()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
int	drainTo(Collection<? super T> c)
int	drainTo(Collection<? super T> c, int maxElements)
T	element()
void	forEach(Consumer<? super T> action)
void	handle(BiConsumer<T,Pausable> onData, Consumer<Throwable> onError, Runnable onComplete) Register data handlers (callbacks).
boolean	isEmpty()
Iterator<T>	iterator()
boolean	offer(T t)
boolean	offer(T t, long timeout, TimeUnit unit)
void	pause() Pause data chunks flow until Pausable.resume().
T	peek()
T	poll()
T	poll(long timeout, TimeUnit unit)
void	put(T t) Inserts the specified element at the tail of this queue, waiting for space to become available if the queue is full.
int	remainingCapacity()
T	remove()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	removeIf(Predicate<? super T> filter)
void	resume() Resume data chunks flow after Pausable.pause().
boolean	retainAll(Collection<?> c)
int	size()
Spliterator<T>	spliterator()
T	take()
Object[]	toArray()
<T1> T1[]	toArray(T1[] a)
void	whenDrain(Runnable drainHandler) Provided handler is called a single time when internal capacity is maximally half full and instance is not closed.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.helidon.common.reactive.valve.Valve

collect, executeOn, filter, flatMap, handle, handle, handle, handle, handle, map, peek, toIterator, toPublisher

Methods inherited from interface java.util.Collection

equals, hashCode, parallelStream, stream

Constructor Detail

Tank

public Tank(int capacity)

Creates new instance.

Parameters:

capacity - the capacity of this queue

Method Detail

whenDrain

public void whenDrain(Runnable drainHandler)

Provided handler is called a single time when internal capacity is maximally half full and instance is not closed.

Parameters:

drainHandler - an handler of drain event

Throws:

NullPointerException - if drainHandler is null

pause

public void pause()

Description copied from interface: Pausable

Pause data chunks flow until Pausable.resume().

Specified by:

pause in interface Pausable

resume

public void resume()

Description copied from interface: Pausable

Resume data chunks flow after Pausable.pause().

Specified by:

resume in interface Pausable

handle

public void handle(BiConsumer<T,Pausable> onData,
                   Consumer<Throwable> onError,
                   Runnable onComplete)

Description copied from interface: Valve

Register data handlers (callbacks).

Specified by:

handle in interface Valve<T>

Parameters:

onData - a callback for data chunks and Pausable representing a faucet of this Valve.

onError - a callback of errors or null

onComplete - a callback for completion event or null

close

public void close()

Specified by:

close in interface AutoCloseable

add

public boolean add(T t)

Specified by:

add in interface Collection<T>

Specified by:

add in interface BlockingQueue<T>

Specified by:

add in interface Queue<T>

addAll

public boolean addAll(Collection<? extends T> c)

Specified by:

addAll in interface Collection<T>

offer

public boolean offer(T t)

Specified by:

offer in interface BlockingQueue<T>

Specified by:

offer in interface Queue<T>

put

public void put(T t)
         throws InterruptedException

Inserts the specified element at the tail of this queue, waiting for space to become available if the queue is full.

Specified by:

put in interface BlockingQueue<T>

Throws:

InterruptedException

NullPointerException

IllegalArgumentException - if Tank is closed

offer

public boolean offer(T t,
                     long timeout,
                     TimeUnit unit)
              throws InterruptedException

Specified by:

offer in interface BlockingQueue<T>

Throws:

InterruptedException

clear

public void clear()

Specified by:

clear in interface Collection<T>

poll

public T poll()

Specified by:

poll in interface Queue<T>

take

public T take()
       throws InterruptedException

Specified by:

take in interface BlockingQueue<T>

Throws:

InterruptedException

poll

public T poll(long timeout,
              TimeUnit unit)
       throws InterruptedException

Specified by:

poll in interface BlockingQueue<T>

Throws:

InterruptedException

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface BlockingQueue<T>

drainTo

public int drainTo(Collection<? super T> c)

Specified by:

drainTo in interface BlockingQueue<T>

drainTo

public int drainTo(Collection<? super T> c,
                   int maxElements)

Specified by:

drainTo in interface BlockingQueue<T>

removeIf

public boolean removeIf(Predicate<? super T> filter)

Specified by:

removeIf in interface Collection<T>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<T>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<T>

remove

public T remove()

Specified by:

remove in interface Queue<T>

element

public T element()

Specified by:

element in interface Queue<T>

peek

public T peek()

Specified by:

peek in interface Queue<T>

size

public int size()

Specified by:

size in interface Collection<T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<T>

remainingCapacity

public int remainingCapacity()

Specified by:

remainingCapacity in interface BlockingQueue<T>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<T>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface BlockingQueue<T>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<T>

toArray

public <T1> T1[] toArray(T1[] a)

Specified by:

toArray in interface Collection<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Collection<T>

spliterator

public Spliterator<T> spliterator()

Specified by:

spliterator in interface Iterable<T>

Specified by:

spliterator in interface Collection<T>

forEach

public void forEach(Consumer<? super T> action)

Specified by:

forEach in interface Iterable<T>