com.allanbank.mongodb.connection.state

Class LatencyServerSelector

java.lang.Object

com.allanbank.mongodb.connection.state.LatencyServerSelector

All Implemented Interfaces:

ServerSelector

public class LatencyServerSelector
extends Object
implements ServerSelector

LatencyServerSelector provides an implementation of the server selector that uses the server latencies to determine the server to select.

API Warning:

This class is NOT part of the drivers API. This class may be mutated in incompatible ways between any two releases of the driver.

Copyright ©:

2012, Allanbank Consulting, Inc., All Rights Reserved

Constructor Summary

Constructors

Constructor and Description
LatencyServerSelector(ClusterState cluster, boolean writableOnly) Creates a new LatencyServerSelector.

Method Summary

Methods

Modifier and Type	Method and Description
List<ServerState>	pickServers() Picks a server to try and connect to.

Methods inherited from class java.lang.Object

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

Constructor Detail

LatencyServerSelector

public LatencyServerSelector(ClusterState cluster,
                     boolean writableOnly)

Creates a new LatencyServerSelector.

Parameters:

cluster - The cluster to choose from.

writableOnly - If true then only writable servers should be selected. If false then any server (writable and not writable) may be selected.

Method Detail

pickServers

public List<ServerState> pickServers()

Picks a server to try and connect to. The exact criteria used to select a server is defined by the implementation.

Overridden to order the servers with the lowest latency first.

Specified by:

pickServers in interface ServerSelector

Returns:

The selected server to try and connect to.