Package dev.brachtendorf.concurrency

Class DelayedConsumerHashMap<T>

java.lang.Object

dev.brachtendorf.concurrency.DelayedConsumerHashMap<T>

Type Parameters:

T - Type of the task the consumer will execute

public class DelayedConsumerHashMap<T>
extends Object

Accepts a consumer which executes all provided tasks in a batch no more often than the delay specified. Tasks are labeled by id and will replace each other if they arrive within the grace period while ensuring that the task scheduled last will eventually be executed.

1. Event( key = 1) arrives. Consumer has not executed a task therefore it is executed immediately.
2. Event( key = 2) arrives. Consumer is currently sleeping
3. Event( key = 1) arrives. Consumer is currently sleeping
4. Event( key = 2) arrives. Consumer is currently sleeping. The first event with key 2 is replaced and will never be executed.
5. Grace period over. Execute Event(key = 2) and Event( key = 1)
6. Lay dormant until new tasks arrive

Due to the use of internal locks no polling takes place.

Since:

1.0.0 com.github.kilianB

Author:

Kilian

Constructor Summary

Constructors

Constructor	Description
DelayedConsumerHashMap(Consumer<T> consumer, int sleep)

Method Summary

Modifier and Type	Method	Description
void	put(Integer key, T object)

Methods inherited from class java.lang.Object

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

Constructor Detail

DelayedConsumerHashMap

public DelayedConsumerHashMap(Consumer<T> consumer,
                              int sleep)

Method Detail

put

public void put(Integer key,
                T object)