FileCatalogClientBase

FileCatalogClientBase is a base class for the clients of file catalog-like services built within the DIRAC framework.

The class contains variables defining lists of implemented catalog methods READ_METHODS WRITE_METHODS NO_LFN_METHODS ADMIN_METHODS

Those lists must be complemented in the derived classes to include specific implemented methods.

class DIRAC.Resources.Catalog.FileCatalogClientBase.FileCatalogClientBase(url=None, **kwargs)

Bases: DIRAC.Core.Base.Client.Client

Client code to the DIRAC File Catalogue

ADMIN_METHODS = []

NO_LFN_METHODS = []

READ_METHODS = ['hasAccess', 'exists', 'getPathPermissions']

WRITE_METHODS = []

__init__(url=None, **kwargs)

Constructor function.

property call

To be removed once we’re sure self.call has been removed

Type

Deprecated

executeRPC(*parms, **kws)

This method extracts some parameters from kwargs that are used as parameter of the constructor or RPCClient. Unfortunately, only a few of all the available parameters of BaseClient are exposed.

Parameters

• rpc – if an RPC client is passed, use that one

• timeout – we can change the timeout on a per call bases. Default is self.timeout

• url – We can specify which url to use

exists(lfns)

Default method: returns False for all paths

Parameters

paths (lfn) – has to be formatted this way : { lfn : { se1 : pfn1, se2 : pfn2, …}, …}

Returns

{ successful : { lfn : [ ses ] } : failed : { lfn : { se : msg } } }

getClientKWArgs()

Returns a copy of the connection arguments

classmethod getInterfaceMethods()

Get the methods implemented by the File Catalog client

Return tuple

( read_methods_list, write_methods_list, nolfn_methods_list )

getPathPermissions(lfns)

Default method: returns Read & Write permission for all the paths

Parameters

paths (lfn) – has to be formatted this way : { lfn : { se1 : pfn1, se2 : pfn2, …}, …}

Returns

{ successful : { lfn : [ ses ] } : failed : { lfn : { se : msg } } }

getServer()

Getter for the server url. Useful ?

hasAccess(paths, _opType)

Default method: returns True for all paths and all actions

Parameters

• paths (lfn) – has to be formatted this way : { lfn : { se1 : pfn1, se2 : pfn2, …}, …}

• _opType (str) – dummy string

Returns

{ successful : { lfn : [ ses ] } : failed : { lfn : { se : msg } } }

classmethod hasCatalogMethod(methodName)

Check of a method with the given name is implemented

Parameters

methodName (str) – the name of the method to check

Returns

boolean Flag True if the method is implemented

httpsClient

alias of DIRAC.Core.Tornado.Client.TornadoClient.TornadoClient

isOK(timeout=120)

Check that the service is OK

setServer(url)

Set the server URL used by default

Parameters

url – url of the service