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 f as the zone-id.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	ecsRegion
protected java.lang.String	ecsZone
protected static org.slf4j.Logger	logger
protected static java.lang.String	ZONE_NAME_QUERY_URL

Constructor Summary

Constructors

Constructor and Description
AlibabaCloudSnitch()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getDatacenter(InetAddressAndPort endpoint) Return the data center for which an endpoint resides in
java.lang.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, getLocalDatacenter, getLocalRack, validate

Field Detail

logger

protected static final org.slf4j.Logger logger

ZONE_NAME_QUERY_URL

protected static final java.lang.String ZONE_NAME_QUERY_URL

See Also:

Constant Field Values

ecsZone

protected java.lang.String ecsZone

ecsRegion

protected java.lang.String ecsRegion

Constructor Detail

AlibabaCloudSnitch

public AlibabaCloudSnitch()
                   throws java.net.MalformedURLException,
                          java.io.IOException

Throws:

java.net.MalformedURLException

java.io.IOException

Method Detail

getRack

public java.lang.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 java.lang.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