oemware.core
Class ServiceManager

java.lang.Object
  oemware.core.ServiceManager

public final class ServiceManager
extends java.lang.Object

The service manager. This class is the base for all java applications. When a server/module is started/initialized, it is done so here. If a stop service is registered, then it interacts with the service manager. There will only be one instance of this singleton running. The service manager executes the start/stop chains registered.

The startup/shutdown is modular so you don't need to add application specific initialization here. The contract is to call the startup method when you begin and the shutdown method when you need to exit :-^

Version:

$Id: ServiceManager.java 13 2008-06-15 19:43:04Z oemware $

Field Summary

static int	STATE_INITIALIZE
static int	STATE_RUNNING
static int	STATE_STARTING
static int	STATE_STOPPED
static int	STATE_STOPPING

Method Summary

java.lang.String	getAppDir()
java.lang.String	getBaseDir()
java.lang.String	getDataDir()
java.lang.String	getEnvName()
static ServiceManager	getInstance() Returns the (only) instance of this class.
short	getInstanceId()
short	getNodeId()
int	getRunState()
java.lang.String	getServiceName()
long	getStartTime()
long	getUptime()
boolean	isRunning()
boolean	isStopping()
static void	main(java.lang.String[] pArgs) The main method.
void	shutdown() The stop hook.
void	startup() The start hook.

Methods inherited from class java.lang.Object

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

Field Detail

STATE_INITIALIZE

public static final int STATE_INITIALIZE

See Also:

Constant Field Values

STATE_STARTING

public static final int STATE_STARTING

See Also:

Constant Field Values

STATE_RUNNING

public static final int STATE_RUNNING

See Also:

Constant Field Values

STATE_STOPPING

public static final int STATE_STOPPING

See Also:

Constant Field Values

STATE_STOPPED

public static final int STATE_STOPPED

See Also:

Constant Field Values

Method Detail

startup

public final void startup()
                   throws ServiceException

The start hook. Calls the registered startup chain.

Throws:

ServiceException

shutdown

public final void shutdown()
                    throws ServiceException

The stop hook. Calls the registered shutdown chain.

Throws:

ServiceException

main

public static final void main(java.lang.String[] pArgs)

The main method. Used to init from command line.

Parameters:

pArgs - The command line arguments.

isRunning

public final boolean isRunning()

isStopping

public final boolean isStopping()

getServiceName

public final java.lang.String getServiceName()

getEnvName

public final java.lang.String getEnvName()

getNodeId

public final short getNodeId()

getAppDir

public final java.lang.String getAppDir()

getBaseDir

public final java.lang.String getBaseDir()

getDataDir

public final java.lang.String getDataDir()

getInstanceId

public final short getInstanceId()

getRunState

public final int getRunState()

getStartTime

public final long getStartTime()

getUptime

public final long getUptime()

getInstance

public static final ServiceManager getInstance()
                                        throws ServiceException

Returns the (only) instance of this class. This methoed is syncronized so cache the result.

Returns:

The instance.

Throws:

ServiceException