hera.server

Class AbstractServer

java.lang.Object

hera.server.AbstractServer

All Implemented Interfaces:

Server, StateChangeListener<ServerStatus>

Direct Known Subclasses:

ThreadServer

public abstract class AbstractServer
extends java.lang.Object
implements Server, StateChangeListener<ServerStatus>

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.Throwable	exception Latest exception.
protected java.util.ArrayList<ServerListener>	listeners server listeners.
protected org.slf4j.Logger	logger
protected java.lang.String	name Server name for track.
protected StateMachine<ServerStatus>	state server status.

Fields inherited from interface hera.server.Server

STATUS_CHANGED

Constructor Summary

Constructors

Constructor and Description
AbstractServer()

Method Summary

Modifier and Type	Method and Description
void	addServerListener(ServerListener listener) Add a listener for server event.
protected void	changeStatus(ServerStatus status) Change status to status.
void	clearException() Clear exception.
protected void	fireEvent(ServerEvent event) Fire ServerEvent e to listeners.
ServerStatus	getStatus() Return server status.
protected void	handleError(java.lang.Throwable th) Exception handling part in process.
protected void	initialize() Initialization part.
boolean	isStatus(ServerStatus... status) Check if current status is one of status.
protected void	process() Process part.
void	removeServerListener(ServerListener listener) Remove listener to be registered.
void	stateChanged(ServerStatus old, ServerStatus state, java.lang.Object... args)
protected void	terminate() Post process part.
void	waitStatus(ServerStatus... status) Wait for server status to be one of status.

Methods inherited from class java.lang.Object

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

Methods inherited from interface hera.server.Server

boot, down

Field Detail

logger

protected final org.slf4j.Logger logger

state

protected StateMachine<ServerStatus> state

server status.

listeners

protected java.util.ArrayList<ServerListener> listeners

server listeners.

exception

protected java.lang.Throwable exception

Latest exception.

name

protected java.lang.String name

Server name for track.

Constructor Detail

AbstractServer

public AbstractServer()

Method Detail

getStatus

public ServerStatus getStatus()

Description copied from interface: Server

Return server status.

Specified by:

getStatus in interface Server

Returns:

current server status

isStatus

public boolean isStatus(ServerStatus... status)

Description copied from interface: Server

Check if current status is one of status.

Specified by:

isStatus in interface Server

Parameters:

status - status values to check

Returns:

if current status is one of status

waitStatus

public void waitStatus(ServerStatus... status)

Description copied from interface: Server

Wait for server status to be one of status.

Specified by:

waitStatus in interface Server

Parameters:

status - status values to wait for

changeStatus

protected void changeStatus(ServerStatus status)

Change status to status.

Parameters:

status - status to set

stateChanged

public void stateChanged(ServerStatus old,
                         ServerStatus state,
                         java.lang.Object... args)

Specified by:

stateChanged in interface StateChangeListener<ServerStatus>

clearException

public void clearException()

Clear exception.

addServerListener

public void addServerListener(ServerListener listener)

Description copied from interface: Server

Add a listener for server event.

Specified by:

addServerListener in interface Server

Parameters:

listener - listener to add

removeServerListener

public void removeServerListener(ServerListener listener)

Description copied from interface: Server

Remove listener to be registered.

Specified by:

removeServerListener in interface Server

Parameters:

listener - listener to remove

fireEvent

protected void fireEvent(ServerEvent event)

Fire ServerEvent e to listeners.

Parameters:

event - ServerEvent to fire

initialize

protected void initialize()
                   throws java.lang.Exception

Initialization part.

Throws:

java.lang.Exception - Fail to initialize the server

process

protected void process()
                throws java.lang.Exception

Process part.

Throws:

java.lang.Exception - Fail to process the server task

handleError

protected void handleError(java.lang.Throwable th)

Exception handling part in process.

Parameters:

th - exception to be occurred

terminate

protected void terminate()

Post process part.

No exception occurred Just one called though exception occurred