Package 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:

AlibabaCloudSnitch, AzureSnitch, CloudstackSnitch, Ec2Snitch, GoogleCloudSnitch, 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	Description
AbstractNetworkTopologySnitch()

Method Summary

Modifier and Type	Method	Description
int	compareEndpoints(InetAddressAndPort address, Replica r1, Replica r2)	compares two endpoints in relation to the target endpoint, returning as Comparator.compare would
abstract String	getDatacenter(InetAddressAndPort endpoint)	Return the data center for which an endpoint resides in
abstract String	getRack(InetAddressAndPort endpoint)	Return the rack for which an endpoint resides in

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

gossiperStarting, isWorthMergingForRangeQuery, sortedByProximity

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.locator.IEndpointSnitch

getDatacenter, getDatacenter, getLocalDatacenter, getLocalRack, validate

Constructor Details

AbstractNetworkTopologySnitch

public AbstractNetworkTopologySnitch()

Method Details

getRack

public abstract String getRack(InetAddressAndPort endpoint)

Return the rack for which an endpoint resides in

Parameters:

endpoint - a specified endpoint

Returns:

string of rack

getDatacenter

public abstract String getDatacenter(InetAddressAndPort 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(InetAddressAndPort address,
 Replica r1,
 Replica r2)

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