ai.preferred.venom.job

Class LazyScheduler

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<Job>

ai.preferred.venom.job.AbstractQueueScheduler

ai.preferred.venom.job.LazyScheduler

All Implemented Interfaces:

Scheduler, Iterable<Job>, Collection<Job>, BlockingQueue<Job>, Queue<Job>

public class LazyScheduler
extends AbstractQueueScheduler

This class provides and implementation of scheduler with a priority sensitive queue and polls from iterator when queue is empty.

Jobs in queue will be processed first in order of higher priority, followed by requests in the iterator.

Author:

Maksim Tkachenko, Ween Jiann Lee

Constructor Summary

Constructors

Constructor and Description
LazyScheduler(Iterator<Request> requests) Constructs an instance of lazy scheduler without a default handler.
LazyScheduler(Iterator<Request> requests, Handler handler) Constructs an instance of lazy scheduler with a default handler.

Method Summary

Modifier and Type	Method and Description
void	add(Request r, Handleable h, Priority p, Priority pf) Adds a request to the queue.
boolean	isEmpty()
boolean	offer(Job job, long timeout, TimeUnit unit)
Job	poll()
Job	poll(long time, TimeUnit unit)
void	put(Job job)

Methods inherited from class ai.preferred.venom.job.AbstractQueueScheduler

add, add, add, add, add, drainTo, drainTo, iterator, offer, peek, remainingCapacity, size, take

Methods inherited from class java.util.AbstractQueue

add, addAll, clear, element, remove

Methods inherited from class java.util.AbstractCollection

contains, containsAll, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.BlockingQueue

add, contains, remove

Methods inherited from interface java.util.Queue

element, remove

Methods inherited from interface java.util.Collection

addAll, clear, containsAll, equals, hashCode, parallelStream, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

LazyScheduler

public LazyScheduler(Iterator<Request> requests,
                     Handler handler)

Constructs an instance of lazy scheduler with a default handler.

Parameters:

requests - An iterator to obtain requests

handler - The default handler to use

LazyScheduler

public LazyScheduler(Iterator<Request> requests)

Constructs an instance of lazy scheduler without a default handler.

Parameters:

requests - An iterator to obtain requests

Method Detail

add

public final void add(Request r,
                      Handleable h,
                      Priority p,
                      Priority pf)

Description copied from interface: Scheduler

Adds a request to the queue.

This request would be parsed by the handler specified, and its priority can be downgraded to a minimum priority specified.

Parameters:

r - request to fetch when dequeued

h - handler to be used to parse the request

p - initial priority of the request

pf - the minimum (floor) priority of this request

poll

public final Job poll()

Specified by:

poll in interface Queue<Job>

Overrides:

poll in class AbstractQueueScheduler

put

public final void put(@Nonnull
                      Job job)

offer

public final boolean offer(Job job,
                           long timeout,
                           @Nonnull
                           TimeUnit unit)

poll

public final Job poll(long time,
                      @Nonnull
                      TimeUnit unit)
               throws InterruptedException

Specified by:

poll in interface BlockingQueue<Job>

Overrides:

poll in class AbstractQueueScheduler

Throws:

InterruptedException

isEmpty

public final boolean isEmpty()

Specified by:

isEmpty in interface Collection<Job>

Overrides:

isEmpty in class AbstractCollection<Job>