org.apache.cassandra.locator

Class AbstractNetworkTopologySnitch

java.lang.Object

org.apache.cassandra.locator.AbstractEndpointSnitch

org.apache.cassandra.locator.AbstractNetworkTopologySnitch

All Implemented Interfaces:

IEndpointSnitch

Direct Known Subclasses:

Ec2Snitch, GossipingPropertyFileSnitch, PropertyFileSnitch, RackInferringSnitch

public abstract class AbstractNetworkTopologySnitch
extends AbstractEndpointSnitch

An endpoint snitch tells Cassandra information about network topology that it can use to route requests more efficiently.

Constructor Summary

Constructors

Constructor and Description
AbstractNetworkTopologySnitch()

Method Summary

Methods

Modifier and Type	Method and Description
int	compareEndpoints(java.net.InetAddress address, java.net.InetAddress a1, java.net.InetAddress a2) compares two endpoints in relation to the target endpoint, returning as Comparator.compare would
abstract java.lang.String	getDatacenter(java.net.InetAddress endpoint) Return the data center for which an endpoint resides in
abstract java.lang.String	getRack(java.net.InetAddress endpoint) Return the rack for which an endpoint resides in

Methods inherited from class org.apache.cassandra.locator.AbstractEndpointSnitch

getSortedListByProximity, gossiperStarting, isWorthMergingForRangeQuery, sortByProximity

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractNetworkTopologySnitch

public AbstractNetworkTopologySnitch()

Method Detail

getRack

public abstract java.lang.String getRack(java.net.InetAddress endpoint)

Return the rack for which an endpoint resides in

Parameters:

endpoint - a specified endpoint

Returns:

string of rack

getDatacenter

public abstract java.lang.String getDatacenter(java.net.InetAddress endpoint)

Return the data center for which an endpoint resides in

Parameters:

endpoint - a specified endpoint

Returns:

string of data center

compareEndpoints

public int compareEndpoints(java.net.InetAddress address,
                   java.net.InetAddress a1,
                   java.net.InetAddress a2)

Description copied from interface: IEndpointSnitch

compares two endpoints in relation to the target endpoint, returning as Comparator.compare would

Specified by:

compareEndpoints in interface IEndpointSnitch

Specified by:

compareEndpoints in class AbstractEndpointSnitch