com.staros.shard

Class ShardChecker

java.lang.Object

com.staros.util.AbstractServer

com.staros.shard.ShardChecker

All Implemented Interfaces:

Server

public class ShardChecker
extends AbstractServer

Field Summary

Fields inherited from class com.staros.util.AbstractServer

running

Constructor Summary

Constructors

Constructor and Description
ShardChecker(ServiceManager serviceManager, WorkerManager workerManager, Scheduler scheduler)

Method Summary

Modifier and Type	Method and Description
void	checkAndUpdateShard(java.lang.String serviceId, long workerId, java.util.List<ShardReportInfo> shardReportInfos)
void	doStart()
void	doStop()
protected void	shardGroupBalanceCheckForService(java.lang.String serviceId) Check and balance shard group if needed
protected void	shardHealthCheck(Shard shard) Check given shard's replica status, remove dead replica and add missing replicas.
protected void	shardHealthCheckForService(java.lang.String serviceId) check the shards inside a service

Methods inherited from class com.staros.util.AbstractServer

isRunning, start, stop

Methods inherited from class java.lang.Object

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

Constructor Detail

ShardChecker

public ShardChecker(ServiceManager serviceManager,
                    WorkerManager workerManager,
                    Scheduler scheduler)

Method Detail

doStart

public void doStart()

Specified by:

doStart in class AbstractServer

doStop

public void doStop()

Specified by:

doStop in class AbstractServer

shardHealthCheckForService

protected void shardHealthCheckForService(java.lang.String serviceId)

check the shards inside a service

Parameters:

serviceId - the target service id

shardHealthCheck

protected void shardHealthCheck(Shard shard)
                         throws StarException

Check given shard's replica status, remove dead replica and add missing replicas. The task is expected to run with low priority.

Parameters:

shard - the shard to be checked

Throws:

StarException

shardGroupBalanceCheckForService

protected void shardGroupBalanceCheckForService(java.lang.String serviceId)

Check and balance shard group if needed

Parameters:

serviceId - target service id

checkAndUpdateShard

public void checkAndUpdateShard(java.lang.String serviceId,
                                long workerId,
                                java.util.List<ShardReportInfo> shardReportInfos)