/*
* Mojito Distributed Hash Table (Mojito DHT)
* Copyright (C) 2006-2007 LimeWire LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.limewire.mojito.routing;
import java.io.Serializable;
import java.util.Collection;
import java.util.List;
import org.limewire.mojito.KUID;
/**
* An interface for Buckets.
*/
public interface Bucket extends Serializable {
/**
* Returns the Bucket KUID.
*/
public KUID getBucketID();
/**
* Returns the depth of the Bucket in the Trie.
*/
public int getDepth();
/**
* Set the time stamp of the Bucket to 'now'.
*/
public void touch();
/**
* Returns the time stamp when this Bucket was refreshed
* last time.
*/
public long getTimeStamp();
/**
* Adds the Contact as an active contact.
*/
public void addActiveContact(Contact node);
/**
* Add the Contact to the replacement cache.
*/
public Contact addCachedContact(Contact node);
/**
* Updates the Contact in this bucket.
*/
public Contact updateContact(Contact node);
/**
* Returns the Contact that has the provided KUID.
*/
public Contact get(KUID nodeId);
/**
* Returns the Contact that has the provided KUID.
*/
public Contact getActiveContact(KUID nodeId);
/**
* Returns the Contact that has the provided KUID.
*/
public Contact getCachedContact(KUID nodeId);
/**
* Returns the best matching Contact for the provided KUID.
*/
public Contact select(KUID nodeId);
/**
* Returns the 'count' best matching Contacts for the provided KUID.
*/
public Collection<Contact> select(KUID nodeId, int count);
/**
* Removes the Contact that has the provided KUID.
*/
public boolean remove(KUID nodeId);
/**
* Removes the Contact that has the provided KUID.
*/
public boolean removeActiveContact(KUID nodeId);
/**
* Removes the Contact that has the provided KUID.
*/
public boolean removeCachedContact(KUID nodeId);
/**
* Returns whether or not this Bucket contains a Contact with this KUID.
*/
public boolean contains(KUID nodeId);
/**
* Returns whether or not this Bucket contains a Contact with this KUID.
*/
public boolean containsActiveContact(KUID nodeId);
/**
* Returns whether or not this Bucket contains a Contact with this KUID.
*/
public boolean containsCachedContact(KUID nodeId);
/**
* Returns whether or not this Bucket is full.
*/
public boolean isActiveFull();
/**
* Returns whether or not this Bucket is full.
*/
public boolean isCacheFull();
/**
* Returns whether or not this Bucket is too deep in the Trie.
*/
public boolean isTooDeep();
/**
* Returns whether or not this Bucket is in the smallest subtree.
*/
public boolean isInSmallestSubtree();
/**
* Returns all active Contacts as List.
*/
public Collection<Contact> getActiveContacts();
/**
* Returns all cached Contacts as List.
*/
public Collection<Contact> getCachedContacts();
/**
* Returns the least recently seen active Contact.
*/
public Contact getLeastRecentlySeenActiveContact();
/**
* Returns the most recently seen active Contact.
*/
public Contact getMostRecentlySeenActiveContact();
/**
* Returns the least recently seen cached Contact.
*/
public Contact getLeastRecentlySeenCachedContact();
/**
* Returns the most recently seen cached Contact.
*/
public Contact getMostRecentlySeenCachedContact();
/**
* Removes the unknown and dead Contacts in this bucket.
*/
public void purge();
/**
* Splits the Bucket into two parts.
*/
public List<Bucket> split();
/**
* Returns the total number of Contacts in the Bucket.
*/
public int size();
/**
* Returns the number of active Contacts in the Bucket.
*/
public int getActiveSize();
/**
* Returns the maximum number of active Contacts the
* Bucket can hold (aka k).
*/
public int getMaxActiveSize();
/**
* Returns the number of cached Contacts in the Bucket.
*/
public int getCacheSize();
/**
* Clears the Bucket.
*/
public void clear();
/**
* Returns whether or not this Bucket needs to be refreshed.
*/
public boolean isRefreshRequired();
/**
* Returns true if the given Contact is the local Node.
*/
public boolean isLocalNode(Contact node);
/**
* Returns the ClassfulNetworkCounter of this Bucket.
*/
public ClassfulNetworkCounter getClassfulNetworkCounter();
}