me.prettyprint.cassandra.connection
Interface LoadBalancingPolicy

All Superinterfaces:

Serializable

All Known Implementing Classes:

DynamicLoadBalancingPolicy, LeastActiveBalancingPolicy, RoundRobinBalancingPolicy

public interface LoadBalancingPolicy
extends Serializable

Default interface for all load balancing policies.

Method Summary

HClientPool	createConnection(HClientFactory clientFactory, CassandraHost host, CassandraClientMonitor monitor) Creates a connection pool for host.
HClientPool	getPool(Collection<HClientPool> pools, Set<CassandraHost> excludeHosts) Retrieves a pool from the collection of pools excluding excludeHosts.

Method Detail

getPool

HClientPool getPool(Collection<HClientPool> pools,
                    Set<CassandraHost> excludeHosts)

Retrieves a pool from the collection of pools excluding excludeHosts.

Parameters:

pools - collection of all available pools

excludeHosts - excluded pools

Returns:

a pool based on this load balancing policy

createConnection

HClientPool createConnection(HClientFactory clientFactory,
                             CassandraHost host,
                             CassandraClientMonitor monitor)

Creates a connection pool for host.

Parameters:

clientFactory - an instance of HClientFactory

host - an instance of CassandraHost representing the host this pool will represent

monitor - the monitor exposing JMX methods

Returns:

a connection pool