org.apache.ambari.server.controller.utilities.state

Class DefaultServiceCalculatedState

java.lang.Object

org.apache.ambari.server.controller.utilities.state.DefaultServiceCalculatedState

All Implemented Interfaces:

ServiceCalculatedState

Direct Known Subclasses:

FlumeServiceCalculatedState, HBaseServiceCalculatedState, HDFSServiceCalculatedState, HiveServiceCalculatedState, OozieServiceCalculatedState, YARNServiceCalculatedState

public class DefaultServiceCalculatedState
extends Object
implements ServiceCalculatedState

Default calculator of service state. The following rules should apply : For services that have all components DISABLED, the service state should be DISABLED. For services that have any master components, the service state should be STARTED if all master components are STARTED. For services that have all client components, the service state should be INSTALLED if all of the components are INSTALLED. For all other cases the state of the service should match the highest state of all of its component states or UNKNOWN if the component states can not be determined.

Constructor Summary

Constructors

Constructor and Description
DefaultServiceCalculatedState()

Method Summary

Modifier and Type	Method and Description
protected Cluster	getCluster(String clusterName)
protected State	getHostComponentState(ServiceComponentHostResponse hostComponent)
State	getState(String clusterName, String serviceName)

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultServiceCalculatedState

public DefaultServiceCalculatedState()

Method Detail

getHostComponentState

protected State getHostComponentState(ServiceComponentHostResponse hostComponent)

getCluster

protected Cluster getCluster(String clusterName)
                      throws org.apache.ambari.server.AmbariException

Throws:

org.apache.ambari.server.AmbariException

getState

public State getState(String clusterName,
                      String serviceName)

Specified by:

getState in interface ServiceCalculatedState