edu.isi.pegasus.planner.transfer.mapper

Interface OutputMapper

All Known Implementing Classes:

AbstractFileFactoryBasedMapper, Fixed, Flat, Hashed, Replica

public interface OutputMapper

The interface that defines how to map the output files to a stage out site.

Author:

vahi

Field Summary

Fields

Modifier and Type	Field and Description
static String	VERSION The version of the API of the Output Mapper

Method Summary

Methods

Modifier and Type	Method and Description
String	description() Returns a short description of the mapper.
void	initialize(PegasusBag bag, ADag workflow) Initializes the mappers.
String	map(String lfn, String site, FileServerType.OPERATION operation) Maps a LFN to a location on the filsystem of a site and returns a single externally accessible URL corresponding to that location.
String	map(String lfn, String site, FileServerType.OPERATION operation, boolean existing) Maps a LFN to a location on the filsystem of a site and returns a single externally accessible URL corresponding to that location.
List<String>	mapAll(String lfn, String site, FileServerType.OPERATION operation) Maps a LFN to a location on the filsystem of a site and returns all the possible equivalent externally accessible URL corresponding to that location.

Field Detail

VERSION

static final String VERSION

The version of the API of the Output Mapper

See Also:

Constant Field Values

Method Detail

initialize

void initialize(PegasusBag bag,
              ADag workflow)
                throws MapperException

Initializes the mappers.

Parameters:

bag - the bag of objects that is useful for initialization.

workflow - the workflow refined so far.

Throws:

MapperException - if unable to construct URL for any reason

map

String map(String lfn,
         String site,
         FileServerType.OPERATION operation)
           throws MapperException

Maps a LFN to a location on the filsystem of a site and returns a single externally accessible URL corresponding to that location.

Parameters:

lfn - the lfn

site - the output site

operation - whether we want a GET or a PUT URL

Returns:

the URL to file that was mapped

Throws:

MapperException - if unable to construct URL for any reason

map

String map(String lfn,
         String site,
         FileServerType.OPERATION operation,
         boolean existing)
           throws MapperException

Maps a LFN to a location on the filsystem of a site and returns a single externally accessible URL corresponding to that location.

Parameters:

lfn - the lfn

site - the output site

operation - whether we want a GET or a PUT URL

existing - indicates whether to create a new location/placement for a file, or rely on existing placement on the site.

Returns:

externally accessible URL to the mapped file.

Throws:

MapperException - if unable to construct URL for any reason

mapAll

List<String> mapAll(String lfn,
                  String site,
                  FileServerType.OPERATION operation)
                    throws MapperException

Maps a LFN to a location on the filsystem of a site and returns all the possible equivalent externally accessible URL corresponding to that location. For example, if a file on the filesystem is accessible via multiple file servers it should return externally accessible URL's from all the File Servers on the site.

Parameters:

lfn - the lfn

site - the output site

operation - whether we want a GET or a PUT URL

Returns:

List of externally accessible URLs to the mapped file.

Throws:

MapperException - if unable to construct URL for any reason

description

String description()

Returns a short description of the mapper.

Returns: