edu.isi.pegasus.planner.catalog.site.impl
Class MYOSG

java.lang.Object
  edu.isi.pegasus.planner.catalog.site.impl.MYOSG

All Implemented Interfaces:

Catalog, SiteCatalog

public class MYOSG
extends Object
implements SiteCatalog

This class implements the SiteCatalog interface

Version:

$Revision: 2079 $

Author:

Prasanth Thomas, Karan Vahi

Field Summary

static String	DATE_FORMAT The date format to be used while passing dates to the URL construction.
static String	DEFAULT_GRID The default VO to use if none is specified
static String	DEFAULT_VO The default VO to use if none is specified
static String	GRID_KEY The name of the key that determines whether we keep the tmp xml file around or not.
static String	KEEP_TMP_FILE_KEY The name of the key that determines whether we keep the tmp xml file around or not.
private boolean	mConnected A boolean variable tracking whether catalog is connected or not
private String	mGrid The grid for which to query MYOSG
private boolean	mKeepTmpFile A boolean variable that tracks whether to keep the temp xml file or not.
private LogManager	mLogger The Logging instance.
private Map<String,MYOSGSiteInfo>	mMYOSGInfo
private SiteStore	mSiteStore The SiteStore object where information about the sites is stored.
private String	mVO The vo for which to query MYOSG
static String	VO_KEY The name of the key that determines what VO to query for.

Fields inherited from interface edu.isi.pegasus.planner.catalog.SiteCatalog

c_prefix, VERSION

Fields inherited from interface edu.isi.pegasus.planner.catalog.Catalog

DB_ALL_PREFIX

Constructor Summary

MYOSG()
The default constructor.

Method Summary

void	close() Close the connection to back end file.
boolean	connect(Properties props) Establishes a connection to the file from the properties.
private Properties	createConnectionURLProperties() Creates the properties that are required to compose the HTTP URL to the MYOSG website.
private static String	getDateAfter(int days) Returns the date after n days formatted as MM/dd/yyyy.
private String	getStartDate() Returns the start date formatted as MM/dd/yyyy.
int	insert(SiteCatalogEntry entry) Not implemented as yet.
boolean	isClosed() Returns if the connection is closed or not.
Set<String>	list() Lists the site handles for all the sites in the Site Catalog.
int	load(List<String> sites) Loads up the Site Catalog implementation with the sites whose site handles are specified.
SiteCatalogEntry	lookup(String handle) Retrieves the SiteCatalogEntry for a site.
int	remove(String handle) Not yet implemented as yet.

Methods inherited from class java.lang.Object

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

Field Detail

DATE_FORMAT

public static final String DATE_FORMAT

The date format to be used while passing dates to the URL construction.

See Also:

Constant Field Values

DEFAULT_VO

public static final String DEFAULT_VO

The default VO to use if none is specified

See Also:

Constant Field Values

DEFAULT_GRID

public static final String DEFAULT_GRID

The default VO to use if none is specified

See Also:

Constant Field Values

KEEP_TMP_FILE_KEY

public static final String KEEP_TMP_FILE_KEY

The name of the key that determines whether we keep the tmp xml file around or not.

See Also:

Constant Field Values

VO_KEY

public static final String VO_KEY

The name of the key that determines what VO to query for.

See Also:

Constant Field Values

GRID_KEY

public static final String GRID_KEY

The name of the key that determines whether we keep the tmp xml file around or not.

See Also:

Constant Field Values

mMYOSGInfo

private Map<String,MYOSGSiteInfo> mMYOSGInfo

mLogger

private final LogManager mLogger

The Logging instance.

mConnected

private boolean mConnected

A boolean variable tracking whether catalog is connected or not

mKeepTmpFile

private boolean mKeepTmpFile

A boolean variable that tracks whether to keep the temp xml file or not.

mSiteStore

private final SiteStore mSiteStore

The SiteStore object where information about the sites is stored.

mVO

private String mVO

The vo for which to query MYOSG

mGrid

private String mGrid

The grid for which to query MYOSG

Constructor Detail

MYOSG

public MYOSG()

The default constructor.

Method Detail

insert

public int insert(SiteCatalogEntry entry)
           throws SiteCatalogException

Not implemented as yet.

Specified by:

insert in interface SiteCatalog

Parameters:

entry -

Returns:

number of entries inserted

Throws:

SiteCatalogException

list

public Set<String> list()
                 throws SiteCatalogException

Lists the site handles for all the sites in the Site Catalog.

Specified by:

list in interface SiteCatalog

Returns:

A set of site handles.

Throws:

SiteCatalogException - in case of error.

load

public int load(List<String> sites)
         throws SiteCatalogException

Loads up the Site Catalog implementation with the sites whose site handles are specified. This is a convenience method, that can allow the backend implementations to maintain soft state if required. If the implementation chooses not to implement this, just do an empty implementation. The site handle * is a special handle designating all sites are to be loaded.

Specified by:

load in interface SiteCatalog

Parameters:

sites - the list of sites to be loaded.

Returns:

the number of sites loaded.

Throws:

SiteCatalogException - in case of error.

lookup

public SiteCatalogEntry lookup(String handle)
                        throws SiteCatalogException

Retrieves the SiteCatalogEntry for a site.

Specified by:

lookup in interface SiteCatalog

Parameters:

handle - the site handle / identifier.

Returns:

SiteCatalogEntry in case an entry is found , or null if no match is found.

Throws:

SiteCatalogException - in case of error.

remove

public int remove(String handle)
           throws SiteCatalogException

Not yet implemented as yet.

Specified by:

remove in interface SiteCatalog

Parameters:

handle -

Returns:

Exception

Throws:

SiteCatalogException

close

public void close()

Close the connection to back end file.

Specified by:

close in interface Catalog

connect

public boolean connect(Properties props)
                throws SiteCatalogException

Establishes a connection to the file from the properties. You will need to specify a "file" property to point to the location of the on-disk instance.

Specified by:

connect in interface Catalog

Parameters:

props - is the property table with sufficient settings to to connect to the implementation.

Returns:

true if connected, false if failed to connect.

Throws:

SiteCatalogException

createConnectionURLProperties

private Properties createConnectionURLProperties()

Creates the properties that are required to compose the HTTP URL to the MYOSG website.

Returns:

Properties containing the connection URL Properties

getStartDate

private String getStartDate()

Returns the start date formatted as MM/dd/yyyy.

Returns:

the start date.

getDateAfter

private static String getDateAfter(int days)

Returns the date after n days formatted as MM/dd/yyyy.

Parameters:

days - the days after.

Returns:

the added date

isClosed

public boolean isClosed()

Returns if the connection is closed or not.

Specified by:

isClosed in interface Catalog

Returns:

boolean

See Also:

Catalog.close()