Package org.apache.cassandra.locator

Class AlibabaCloudSnitch

java.lang.Object

org.apache.cassandra.locator.AbstractEndpointSnitch

org.apache.cassandra.locator.AbstractNetworkTopologySnitch

org.apache.cassandra.locator.AlibabaCloudSnitch

All Implemented Interfaces:

IEndpointSnitch

public class AlibabaCloudSnitch
extends AbstractNetworkTopologySnitch

A snitch that assumes an ECS region is a DC and an ECS availability_zone is a rack. This information is available in the config for the node. the format of the zone-id is like 'cn-hangzhou-a' where cn means china, hangzhou means the hangzhou region, a means the az id. We use 'cn-hangzhou' as the dc, and 'a' as the zone-id.

Field Summary

Fields

Modifier and Type	Field	Description
protected final org.apache.cassandra.locator.AbstractCloudMetadataServiceConnector	connector

Constructor Summary

Constructors

Constructor	Description
AlibabaCloudSnitch()
AlibabaCloudSnitch(org.apache.cassandra.locator.AbstractCloudMetadataServiceConnector connector)
AlibabaCloudSnitch(SnitchProperties properties)

Method Summary

Modifier and Type	Method	Description
final String	getDatacenter(InetAddressAndPort endpoint)	Return the data center for which an endpoint resides in
final String	getLocalDatacenter()	returns a String representing the datacenter current endpoint belongs to
final String	getLocalRack()	returns a String representing the rack current endpoint belongs to
final String	getRack(InetAddressAndPort endpoint)	Return the rack for which an endpoint resides in

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

compareEndpoints

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, validate

Field Details

connector

protected final org.apache.cassandra.locator.AbstractCloudMetadataServiceConnector connector

Constructor Details

AlibabaCloudSnitch

public AlibabaCloudSnitch()
                   throws IOException

Throws:

IOException

AlibabaCloudSnitch

public AlibabaCloudSnitch(SnitchProperties properties)
                   throws IOException

Throws:

IOException

AlibabaCloudSnitch

public AlibabaCloudSnitch(org.apache.cassandra.locator.AbstractCloudMetadataServiceConnector connector)
                   throws IOException

Throws:

IOException

Method Details

getLocalRack

public final String getLocalRack()

Description copied from interface: IEndpointSnitch

returns a String representing the rack current endpoint belongs to

getLocalDatacenter

public final String getLocalDatacenter()

Description copied from interface: IEndpointSnitch

returns a String representing the datacenter current endpoint belongs to

getRack

public final String getRack(InetAddressAndPort endpoint)

Description copied from class: AbstractNetworkTopologySnitch

Return the rack for which an endpoint resides in

Specified by:

getRack in interface IEndpointSnitch

Specified by:

getRack in class AbstractNetworkTopologySnitch

Parameters:

endpoint - a specified endpoint

Returns:

string of rack

getDatacenter

public final String getDatacenter(InetAddressAndPort endpoint)

Description copied from class: AbstractNetworkTopologySnitch

Return the data center for which an endpoint resides in

Specified by:

getDatacenter in interface IEndpointSnitch

Specified by:

getDatacenter in class AbstractNetworkTopologySnitch

Parameters:

endpoint - a specified endpoint

Returns:

string of data center