org.apache.pulsar.broker.loadbalance

Interface ModularLoadManagerStrategy

All Known Implementing Classes:

LeastLongTermMessageRate

public interface ModularLoadManagerStrategy

Interface which serves as a component for ModularLoadManagerImpl, flexibly allowing the injection of potentially complex strategies.

Method Summary

Modifier and Type	Method and Description
static ModularLoadManagerStrategy	create(ServiceConfiguration conf) Create a placement strategy using the configuration.
Optional<String>	selectBroker(Set<String> candidates, BundleData bundleToAssign, LoadData loadData, ServiceConfiguration conf) Find a suitable broker to assign the given bundle to.

Method Detail

selectBroker

Optional<String> selectBroker(Set<String> candidates,
                              BundleData bundleToAssign,
                              LoadData loadData,
                              ServiceConfiguration conf)

Find a suitable broker to assign the given bundle to.

Parameters:

candidates - The candidates for which the bundle may be assigned.

bundleToAssign - The data for the bundle to assign.

loadData - The load data from the leader broker.

conf - The service configuration.

Returns:

The name of the selected broker as it appears on ZooKeeper.

create

static ModularLoadManagerStrategy create(ServiceConfiguration conf)

Create a placement strategy using the configuration.

Parameters:

conf - ServiceConfiguration to use.

Returns:

A placement strategy from the given configurations.