org.apache.pulsar.broker.loadbalance

Class NoopLoadManager

java.lang.Object

org.apache.pulsar.broker.loadbalance.NoopLoadManager

All Implemented Interfaces:

LoadManager

public class NoopLoadManager
extends Object
implements LoadManager

Field Summary

Fields inherited from interface org.apache.pulsar.broker.loadbalance.LoadManager

LOADBALANCE_BROKERS_ROOT, log

Constructor Summary

Constructors

Constructor and Description
NoopLoadManager()

Method Summary

Modifier and Type	Method and Description
void	disableBroker() Removes visibility of current broker from loadbalancer list so, other brokers can't redirect any request to this broker and this broker won't accept new connection requests.
void	doLoadShedding() Unload a candidate service unit to balance the load
void	doNamespaceBundleSplit() Namespace bundle split
org.apache.pulsar.policies.data.loadbalancer.LoadManagerReport	generateLoadReport() Generate the load report
Set<String>	getAvailableBrokers() Get list of available brokers in cluster
Optional<ResourceUnit>	getLeastLoaded(org.apache.pulsar.common.naming.ServiceUnitId su) Returns the Least Loaded Resource Unit decided by some algorithm or criteria which is implementation specific
List<org.apache.pulsar.common.stats.Metrics>	getLoadBalancingMetrics() Generate load balancing stats metrics
ZooKeeperCache.Deserializer<? extends org.apache.pulsar.policies.data.loadbalancer.ServiceLookupData>	getLoadReportDeserializer() Returns ZooKeeperCache.Deserializer to deserialize load report
void	initialize(PulsarService pulsar) Initialize this LoadManager.
boolean	isCentralized() Is centralized decision making to assign a new bundle.
void	setLoadReportForceUpdateFlag() Set flag to force load report update
void	start()
void	stop()
void	writeLoadReportOnZookeeper() Publish the current load report on ZK
void	writeResourceQuotasToZooKeeper() Update namespace bundle resource quota on ZK.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pulsar.broker.loadbalance.LoadManager

create, writeLoadReportOnZookeeper

Constructor Detail

NoopLoadManager

public NoopLoadManager()

Method Detail

initialize

public void initialize(PulsarService pulsar)

Description copied from interface: LoadManager

Initialize this LoadManager.

Specified by:

initialize in interface LoadManager

Parameters:

pulsar - The service to initialize this with.

start

public void start()
           throws PulsarServerException

Specified by:

start in interface LoadManager

Throws:

PulsarServerException

isCentralized

public boolean isCentralized()

Description copied from interface: LoadManager

Is centralized decision making to assign a new bundle.

Specified by:

isCentralized in interface LoadManager

getLeastLoaded

public Optional<ResourceUnit> getLeastLoaded(org.apache.pulsar.common.naming.ServiceUnitId su)
                                      throws Exception

Description copied from interface: LoadManager

Returns the Least Loaded Resource Unit decided by some algorithm or criteria which is implementation specific

Specified by:

getLeastLoaded in interface LoadManager

Throws:

Exception

generateLoadReport

public org.apache.pulsar.policies.data.loadbalancer.LoadManagerReport generateLoadReport()
                                                                                  throws Exception

Description copied from interface: LoadManager

Generate the load report

Specified by:

generateLoadReport in interface LoadManager

Throws:

Exception

getLoadReportDeserializer

public ZooKeeperCache.Deserializer<? extends org.apache.pulsar.policies.data.loadbalancer.ServiceLookupData> getLoadReportDeserializer()

Description copied from interface: LoadManager

Returns ZooKeeperCache.Deserializer to deserialize load report

Specified by:

getLoadReportDeserializer in interface LoadManager

Returns:

setLoadReportForceUpdateFlag

public void setLoadReportForceUpdateFlag()

Description copied from interface: LoadManager

Set flag to force load report update

Specified by:

setLoadReportForceUpdateFlag in interface LoadManager

writeLoadReportOnZookeeper

public void writeLoadReportOnZookeeper()
                                throws Exception

Description copied from interface: LoadManager

Publish the current load report on ZK

Specified by:

writeLoadReportOnZookeeper in interface LoadManager

Throws:

Exception

writeResourceQuotasToZooKeeper

public void writeResourceQuotasToZooKeeper()
                                    throws Exception

Description copied from interface: LoadManager

Update namespace bundle resource quota on ZK.

Specified by:

writeResourceQuotasToZooKeeper in interface LoadManager

Throws:

Exception

getLoadBalancingMetrics

public List<org.apache.pulsar.common.stats.Metrics> getLoadBalancingMetrics()

Description copied from interface: LoadManager

Generate load balancing stats metrics

Specified by:

getLoadBalancingMetrics in interface LoadManager

doLoadShedding

public void doLoadShedding()

Description copied from interface: LoadManager

Unload a candidate service unit to balance the load

Specified by:

doLoadShedding in interface LoadManager

doNamespaceBundleSplit

public void doNamespaceBundleSplit()
                            throws Exception

Description copied from interface: LoadManager

Namespace bundle split

Specified by:

doNamespaceBundleSplit in interface LoadManager

Throws:

Exception

disableBroker

public void disableBroker()
                   throws Exception

Description copied from interface: LoadManager

Removes visibility of current broker from loadbalancer list so, other brokers can't redirect any request to this broker and this broker won't accept new connection requests.

Specified by:

disableBroker in interface LoadManager

Throws:

Exception

getAvailableBrokers

public Set<String> getAvailableBrokers()
                                throws Exception

Description copied from interface: LoadManager

Get list of available brokers in cluster

Specified by:

getAvailableBrokers in interface LoadManager

Returns:

Throws:

Exception

stop

public void stop()
          throws PulsarServerException

Specified by:

stop in interface LoadManager

Throws:

PulsarServerException