Package ai.preferred.venom.job

Class LazyScheduler

  • All Implemented Interfaces:
    Scheduler, java.lang.Iterable<Job>, java.util.Collection<Job>, java.util.concurrent.BlockingQueue<Job>, java.util.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 Description
      LazyScheduler​(java.util.Iterator<Request> requests)
      Constructs an instance of lazy scheduler without a default handler.
      LazyScheduler​(java.util.Iterator<Request> requests, Handler handler)
      Constructs an instance of lazy scheduler with a default handler.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(Request r, Handler h, Priority p, Priority pf)
      Adds a request to the queue.
      boolean isEmpty()  
      boolean offer​(Job job, long timeout, java.util.concurrent.TimeUnit unit)  
      Job poll()  
      Job poll​(long time, java.util.concurrent.TimeUnit unit)  
      void put​(Job job)  

      • 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.Collection

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

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.Queue

        element, remove

    • Constructor Detail

      • LazyScheduler

        public LazyScheduler​(java.util.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​(java.util.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,
                      Handler 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()

      • put

        public final void put​(@Nonnull
                      Job job)

      • offer

        public final boolean offer​(Job job,
                           long timeout,
                           @Nonnull
                           java.util.concurrent.TimeUnit unit)

      • poll

        public final Job poll​(long time,
                      @Nonnull
                      java.util.concurrent.TimeUnit unit)
               throws java.lang.InterruptedException
        Throws:
        java.lang.InterruptedException

      • isEmpty

        public final boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Collection<Job>
        Overrides:
        isEmpty in class java.util.AbstractCollection<Job>