org.eclipse.smila.clusterconfig
Interface ClusterConfigService

All Known Implementing Classes:

SimpleClusterConfigService

public interface ClusterConfigService

Interface for cluster config service.

Method Summary

java.util.List<java.lang.String>	getClusterNodes()
long	getFailSafetyLevel()
int	getHttpPort(java.lang.String serviceName) Returns a configured http port for a specified service.
java.lang.String	getLocalHost()
long	getMaxScaleUp()
long	getWorkerScaleUp(java.lang.String worker)
java.util.Collection<java.lang.String>	getWorkersWithScaleUp()
long	getZkGcInterval()
boolean	isConfigured()

Method Detail

getClusterNodes

java.util.List<java.lang.String> getClusterNodes()
                                                 throws ClusterConfigException

Returns:

names of all nodes in cluster

Throws:

ClusterConfigException - when not running in a configured cluster

getLocalHost

java.lang.String getLocalHost()

Returns:

the name of the local host

getZkGcInterval

long getZkGcInterval()

Returns:

interval for zookeeper clean up of data/log directories.

getFailSafetyLevel

long getFailSafetyLevel()

Returns:

number of nodes that may fail without ZooKeeper service stopping to work. '0' if no ClusterConfigService is reachable.

isConfigured

boolean isConfigured()

Returns:

true, if we are running in a configured cluster, false otherwise.

getMaxScaleUp

long getMaxScaleUp()

Returns:

total max scale up for all workers of one node (checked by taskmanager).

getWorkerScaleUp

long getWorkerScaleUp(java.lang.String worker)

Returns:

scale up limit for given worker, -1 if no scale up limit is set for worker.

getWorkersWithScaleUp

java.util.Collection<java.lang.String> getWorkersWithScaleUp()

Returns:

all workers that have set a scale up limit.

getHttpPort

int getHttpPort(java.lang.String serviceName)

Returns a configured http port for a specified service. Returns -1 if no port is configured or the service unknown.