org.apache.calcite.avatica.ha

Class ShuffledRoundRobinLBStrategy

java.lang.Object

org.apache.calcite.avatica.ha.ShuffledRoundRobinLBStrategy

All Implemented Interfaces:

LBStrategy

public class ShuffledRoundRobinLBStrategy
extends Object
implements LBStrategy

Shuffled Round Robin strategy for client side load balancing. It starts with some random position in a list of URLs, and then returns subsequent URL in a RoundRobin manner. It's implemented it as a singleton so that we can maintain state i.e. which URL was last used from the list of URLs specified.

Field Summary

Fields

Modifier and Type	Field and Description
static ShuffledRoundRobinLBStrategy	INSTANCE
static String	URL_SEPERATOR_CHAR

Method Summary

Modifier and Type	Method and Description
String	getLbURL(ConnectionConfig config) Get load balanced URL given the connection configuration.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ShuffledRoundRobinLBStrategy INSTANCE

URL_SEPERATOR_CHAR

public static final String URL_SEPERATOR_CHAR

See Also:

Constant Field Values

Method Detail

getLbURL

public String getLbURL(ConnectionConfig config)

Description copied from interface: LBStrategy

Get load balanced URL given the connection configuration.

Specified by:

getLbURL in interface LBStrategy