Federation API

Low level api

Classes:

FederationABC()

federation, get or remote objects and tables
class FederationABC

federation, get or remote objects and tables

Methods:

get(name, tag, parties, gc)

get objects/tables from parties

remote(v, name, tag, parties, gc)

remote object/table to parties
abstract get(name: str, tag: str, parties: List[fate_arch.common._types.Party], gc: fate_arch.abc._gc.GarbageCollectionABC) → List

get objects/tables from parties

Parameters

  • name (str) – name of transfer variable

  • tag (str) – tag to distinguish each transfer

  • parties (List[Party]) – parties to get objects/tables from

  • gc (GarbageCollectionABC) – used to do some clean jobs

Returns

a list of object or a list of table get from parties with same order of parties

Return type

list

abstract remote(v, name: str, tag: str, parties: List[fate_arch.common._types.Party], gc: fate_arch.abc._gc.GarbageCollectionABC) → NoReturn

remote object/table to parties

Parameters

  • v (object or table) – object/table to remote

  • name (str) – name of transfer variable

  • tag (str) – tag to distinguish each transfer

  • parties (List[Party]) – parties to remote object/table to

  • gc (GarbageCollectionABC) – used to do some clean jobs

Return type

Notes

user api

remoting or getting an object(table) from other parties is quite easy using apis provided in Variable. First to create an instance of BaseTransferVariable, which is simply a collection of Variables:

from federatedml.transfer_variable.transfer_class import secure_add_example_transfer_variable
variable = secure_add_example_transfer_variable.SecureAddExampleTransferVariable()

Then remote or get object(table) by variable provided by this instance:

# remote
variable.guest_share.remote("from guest")

# get
variable.guest_share.get()

Classes:

Variable(name, src, dst)

variable to distinguish federation by name
class Variable(name: str, src: Tuple[str, ...], dst: Tuple[str, ...])

variable to distinguish federation by name

Methods:

remote_parties(obj, parties[, suffix])

remote object to specified parties

get_parties(parties[, suffix])

get objects/tables from specified parties

remote(obj[, role, idx, suffix])

send obj to other parties.

get([idx, suffix])

get obj from other parties.
remote_parties(obj, parties: Union[List[fate_arch.common._types.Party], fate_arch.common._types.Party], suffix: Union[Any, Tuple] = ())

remote object to specified parties

Parameters

  • obj (object or table) – object or table to remote

  • parties (List[Party]) – parties to remote object/table to

  • suffix (str or tuple of str) – suffix used to distinguish federation with in variable

Return type

None

get_parties(parties: Union[List[fate_arch.common._types.Party], fate_arch.common._types.Party], suffix: Union[Any, Tuple] = ())

get objects/tables from specified parties

Parameters

  • parties (List[Party]) – parties to remote object/table to

  • suffix (str or tuple of str) – suffix used to distinguish federation with in variable

Returns

a list of objects/tables get from parties with same order of parties

Return type

list

remote(obj, role=None, idx=- 1, suffix=())

send obj to other parties.

Parameters

  • obj – object to be sent

  • role – role of parties to sent to, use one of [‘Host’, ‘Guest’, ‘Arbiter’, None]. The default is None, means sent values to parties regardless their party role

  • idx – id of party to sent to. The default is -1, which means sent values to parties regardless their party id

  • suffix – additional tag suffix, the default is tuple()

get(idx=- 1, suffix=())

get obj from other parties.

Parameters

  • idx – id of party to get from. The default is -1, which means get values from parties regardless their party id

  • suffix – additional tag suffix, the default is tuple()

Returns

object or list of object