ClientManager

class ClientManager

Bases: ABC

Abstract base class for managing Flower clients.

Methods

all()	Return all available clients.
num_available()	Return the number of available clients.
register(client)	Register Flower ClientProxy instance.
sample(num_clients[, min_num_clients, criterion])	Sample a number of Flower ClientProxy instances.
unregister(client)	Unregister Flower ClientProxy instance.
wait_for(num_clients, timeout)	Wait until at least num_clients are available.

abstract all() → dict[str, ClientProxy]

Return all available clients.

abstract num_available() → int

Return the number of available clients.

Returns:

num_available – The number of currently available clients.

Return type:

int

abstract register(client: ClientProxy) → bool

Register Flower ClientProxy instance.

Parameters:

client (flwr.server.client_proxy.ClientProxy) – The ClientProxy of the Client to register.

Returns:

success – Indicating if registration was successful. False if ClientProxy is already registered or can not be registered for any reason.

Return type:

bool

abstract sample(num_clients: int, min_num_clients: int | None = None, criterion: Criterion | None = None) → list[ClientProxy]

Sample a number of Flower ClientProxy instances.

abstract unregister(client: ClientProxy) → None

Unregister Flower ClientProxy instance.

This method is idempotent.

Parameters:

client (flwr.server.client_proxy.ClientProxy) – The ClientProxy of the Client to unregister.

abstract wait_for(num_clients: int, timeout: int) → bool

Wait until at least num_clients are available.