Package org.distributeme.core.lifecycle

Enum Class LifecycleComponentImpl

java.lang.Object

java.lang.Enum<LifecycleComponentImpl>

org.distributeme.core.lifecycle.LifecycleComponentImpl

All Implemented Interfaces:

Serializable, Comparable<LifecycleComponentImpl>, Constable, LifecycleComponent

public enum LifecycleComponentImpl
extends Enum<LifecycleComponentImpl>
implements LifecycleComponent

Implementation of the LifecycleComponent. This one is a singleton.

Version:

$Id: $Id

Author:

lrosenberg

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
INSTANCE	The singleton instance.

Method Summary

Modifier and Type	Method	Description
HealthStatus	getHealthStatus(String serviceId)	Returns the health status of a given service.
Map<String,HealthStatus>	getHealthStatuses()	Returns map with health status objects for all contained public services (usually one!).
List<String>	getPublicServices()	Returns a list of all publicly accessable services.
ServiceInfo	getServiceInfo(String serviceId)	Collects and returns the info about the specified service.
boolean	isOnline()	Returns true if the service is online.
void	printStatusToLogInfo()	Logs a standard message to info.
void	printStatusToSystemOut()	Prints a standard message to system out.
void	registerPublicService(String descriptor, ServiceAdapter instance)	Registers a service locally running service instance.
void	shutdown(String message)	Shutdowns the current VM and logs the message.
static LifecycleComponentImpl	valueOf(String name)	Returns the enum constant of this class with the specified name.
static LifecycleComponentImpl[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

INSTANCE

public static final LifecycleComponentImpl INSTANCE

The singleton instance.

Method Details

values

public static LifecycleComponentImpl[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static LifecycleComponentImpl valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

isOnline

public boolean isOnline()

Returns true if the service is online. Actually this method always returns true since all services are active for now, however you can call this method from a remote stub to detect whether the service replies at all.

Specified by:

isOnline in interface LifecycleComponent

Returns:

a boolean.

printStatusToSystemOut

public void printStatusToSystemOut()

Prints a standard message to system out.

Specified by:

printStatusToSystemOut in interface LifecycleComponent

printStatusToLogInfo

public void printStatusToLogInfo()

Logs a standard message to info.

Specified by:

printStatusToLogInfo in interface LifecycleComponent

getPublicServices

public List<String> getPublicServices()

Returns a list of all publicly accessable services. Publicly accessable in this context means that the service is accessible via the remote interface. It doesn't include support services like event service bridge or lifecycle service itself, which are meant to have another usage.

Specified by:

getPublicServices in interface LifecycleComponent

Returns:

a List object.

registerPublicService

public void registerPublicService(String descriptor,
 ServiceAdapter instance)

Registers a service locally running service instance.

Specified by:

registerPublicService in interface LifecycleComponent

Parameters:

descriptor - a String object.

instance - a ServiceAdapter object.

getServiceInfo

public ServiceInfo getServiceInfo(String serviceId)

Collects and returns the info about the specified service.

Specified by:

getServiceInfo in interface LifecycleComponent

Parameters:

serviceId - the target service id.

Returns:

a ServiceInfo object.

shutdown

public void shutdown(String message)

Shutdowns the current VM and logs the message.

Specified by:

shutdown in interface LifecycleComponent

Parameters:

message - a String object.

getHealthStatus

public HealthStatus getHealthStatus(String serviceId)

Returns the health status of a given service.

Specified by:

getHealthStatus in interface LifecycleComponent

Parameters:

serviceId - a String object.

Returns:

a HealthStatus object.

getHealthStatuses

public Map<String,HealthStatus> getHealthStatuses()

Returns map with health status objects for all contained public services (usually one!).

Specified by:

getHealthStatuses in interface LifecycleComponent

Returns:

a Map object.