brooklyn.policy.followthesun.FollowTheSunModel Maven / Gradle / Ivy

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package brooklyn.policy.followthesun;

import java.util.Map;
import java.util.Set;

import brooklyn.location.Location;

/**
 * Captures the state of items, containers and locations for the purpose of moving items around
 * to minimise latency. For consumption by a {@link FollowTheSunStrategy}.
 */
public interface FollowTheSunModel {

    // Attributes of the pool.
    public String getName();
    
    // Attributes of containers and items.
    public String getName(ItemType item);
    public Set getItems();
    public Map> getDirectSendsToItemByLocation();
    public Location getItemLocation(ItemType item);
    public ContainerType getItemContainer(ItemType item);
    public Location getContainerLocation(ContainerType container);
    public boolean hasActiveMigration(ItemType item);
    public Set getAvailableContainersFor(ItemType item, Location location);
    public boolean isItemMoveable(ItemType item);
    public boolean isItemAllowedIn(ItemType item, Location location);
    
    // Mutators for keeping the model in-sync with the observed world
    public void onContainerAdded(ContainerType container, Location location);
    public void onContainerRemoved(ContainerType container);
    public void onContainerLocationUpdated(ContainerType container, Location location);

    public void onItemAdded(ItemType item, ContainerType parentContainer, boolean immovable);
    public void onItemRemoved(ItemType item);
    public void onItemUsageUpdated(ItemType item, Map newValues);
    public void onItemMoved(ItemType item, ContainerType newContainer);
}