edu.isi.pegasus.planner.catalog.site.impl.old
Class XML

java.lang.Object
  edu.isi.pegasus.planner.catalog.site.impl.old.PoolInfoProvider
      edu.isi.pegasus.planner.catalog.site.impl.old.Abstract
          edu.isi.pegasus.planner.catalog.site.impl.old.XML

public class XML
extends Abstract

It gets the information about a pool by reading the pool config xml that is generated from querying mds or using the static information provided by the user at the submit host.

Version:

$Revision: 2575 $

Author:

Gaurang Mehta gmehta@isi.edu, Karan Vahi vahi@isi.edu

Field Summary

private static XML

mPoolHandle

Fields inherited from class edu.isi.pegasus.planner.catalog.site.impl.old.Abstract

mPoolConfig

Fields inherited from class edu.isi.pegasus.planner.catalog.site.impl.old.PoolInfoProvider

mDeepStorageStructure, mLogger, mLogMsg, mPoolProvider, mProps, mStorageDir, mUserOpts, mWorkDir, PEGASUS_HOME, VDS_HOME

Constructor Summary

private	XML(String poolProvider) The private constructor that is called only once, when the Singleton is invoked for the first time.
private	XML(String poolProvider, String propFileName) The private constructor that is called to return a non singleton instance of the class.

Method Summary

String	getPoolMode() Returns a textual description about the pool mode that is implemented by this class.
static PoolInfoProvider	nonSingletonInstance(String poolProvider, String propFileName) The method that returns a Non Singleton instance of the dervived InfoProvider class.
static PoolInfoProvider	singletonInstance(String poolProvider, String propFileName) The method returns a singleton instance of the derived InfoProvider class.

Methods inherited from class edu.isi.pegasus.planner.catalog.site.impl.old.Abstract

getGridFTPServers, getJobmanagers, getJobmanagers, getPoolEntry, getPoolProfile, getPools, getSysinfo, getSysinfos, removeGridFtp, removeJobManager

Methods inherited from class edu.isi.pegasus.planner.catalog.site.impl.old.PoolInfoProvider

getEnvironmentVariable, getExecPoolWorkDir, getExecPoolWorkDir, getExecPoolWorkDir, getExecPoolWorkDir, getPegasusHome, getPoolProfile, getSeMountPoint, getTXPoolEntry, getURLPrefix, getVDS_HOME, loadNonSingletonObjects, loadSingletonObjects, logMessage, selectGridFtp, selectLRC, selectWorkdir, singletonInstance

Methods inherited from class java.lang.Object

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

Field Detail

mPoolHandle

private static XML mPoolHandle

Constructor Detail

XML

private XML(String poolProvider)

The private constructor that is called only once, when the Singleton is invoked for the first time.

Parameters:

poolProvider - the path to the file that contains the pool information in the xml format.

XML

private XML(String poolProvider,
            String propFileName)

The private constructor that is called to return a non singleton instance of the class.

Parameters:

poolProvider - the path to the file that contains the pool information in the xml format.

propFileName - the name of the properties file that needs to be picked up from PEGASUS_HOME/etc directory.If it is null, then the default properties file should be picked up.

Method Detail

getPoolMode

public String getPoolMode()

Returns a textual description about the pool mode that is implemented by this class. It is purely informative.

Specified by:

getPoolMode in class PoolInfoProvider

Returns:

String corresponding to the description.

singletonInstance

public static PoolInfoProvider singletonInstance(String poolProvider,
                                                 String propFileName)

The method returns a singleton instance of the derived InfoProvider class.

Parameters:

poolProvider - the path to the file containing the pool information.

propFileName - the name of the properties file that needs to be picked up from PEGASUS_HOME/etc directory. In the singleton case only the default properties file is picked up.

Returns:

a singleton instance of this class.

nonSingletonInstance

public static PoolInfoProvider nonSingletonInstance(String poolProvider,
                                                    String propFileName)

The method that returns a Non Singleton instance of the dervived InfoProvider class. This method if invoked should also ensure that all other internal Pegasus objects like PegasusProperties are invoked in a non singleton manner.

Parameters:

poolProvider - the path to the file containing the pool information.

propFileName - the name of the properties file that needs to be picked up from PEGASUS_HOME/etc directory. If it is null, then the default file should be picked up.

Returns:

the non singleton instance of the pool provider.