org.apache.lens.server

Class LensServices

java.lang.Object

org.apache.hive.service.AbstractService

org.apache.hive.service.CompositeService

org.apache.lens.server.LensServices

All Implemented Interfaces:

org.apache.hive.service.Service, ServiceProvider

public class LensServices
extends org.apache.hive.service.CompositeService
implements ServiceProvider

Manage lifecycle of all Lens services

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LensServices.SERVICE_MODE The Enum SERVICE_MODE.

Nested classes/interfaces inherited from class org.apache.hive.service.CompositeService

org.apache.hive.service.CompositeService.CompositeServiceShutdownHook

Nested classes/interfaces inherited from interface org.apache.hive.service.Service

org.apache.hive.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field and Description
static String	LENS_SERVICES_NAME The Constant LENS_SERVICES_NAME.
static org.apache.commons.logging.Log	LOG The Constant LOG.
static String	SERVER_STATE_PERSISTENCE_ERRORS The Constant SERVER_STATE_PERSISTENCE_ERRORS.

Constructor Summary

Constructors

Constructor and Description
LensServices(String name, LogSegregationContext logSegregationContext) Instantiates a new lens services.

Method Summary

Methods

Modifier and Type	Method and Description
static LensServices	get() Gets the.
List<LensService>	getLensServices()
<T extends org.apache.hive.service.Service> T	getService(String sName) Get an instance of a service by its name.
org.apache.hive.service.Service.STATE	getServiceState()
void	init(org.apache.hadoop.hive.conf.HiveConf hiveConf)
boolean	isStopping()
void	start()
void	stop()

Methods inherited from class org.apache.hive.service.CompositeService

getServices

Methods inherited from class org.apache.hive.service.AbstractService

getHiveConf, getName, getStartTime, register, unregister

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

The Constant LOG.

LENS_SERVICES_NAME

public static final String LENS_SERVICES_NAME

The Constant LENS_SERVICES_NAME.

See Also:

Constant Field Values

SERVER_STATE_PERSISTENCE_ERRORS

public static final String SERVER_STATE_PERSISTENCE_ERRORS

The Constant SERVER_STATE_PERSISTENCE_ERRORS.

See Also:

Constant Field Values

Constructor Detail

LensServices

public LensServices(String name,
            @NonNull
            LogSegregationContext logSegregationContext)

Instantiates a new lens services.

Parameters:

name - the name

Method Detail

init

public void init(org.apache.hadoop.hive.conf.HiveConf hiveConf)

Specified by:

init in interface org.apache.hive.service.Service

Overrides:

init in class org.apache.hive.service.CompositeService

start

public void start()

Specified by:

start in interface org.apache.hive.service.Service

Overrides:

start in class org.apache.hive.service.CompositeService

stop

public void stop()

Specified by:

stop in interface org.apache.hive.service.Service

Overrides:

stop in class org.apache.hive.service.CompositeService

getServiceState

public org.apache.hive.service.Service.STATE getServiceState()

Specified by:

getServiceState in interface org.apache.hive.service.Service

Overrides:

getServiceState in class org.apache.hive.service.AbstractService

isStopping

public boolean isStopping()

get

public static LensServices get()

Gets the.

Returns:

the lens services

getService

public <T extends org.apache.hive.service.Service> T getService(String sName)

Description copied from interface: ServiceProvider

Get an instance of a service by its name.

Specified by:

getService in interface ServiceProvider

Type Parameters:

T - the generic type

Parameters:

sName - the s name

Returns:

the service

getLensServices

public List<LensService> getLensServices()