Source code for spinnman.processes.round_robin_connection_selector
# Copyright (c) 2015 The University of Manchester
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Any, List
from spinn_utilities.overrides import overrides
from spinnman.connections.udp_packet_connections import SCAMPConnection
from .abstract_multi_connection_process_connection_selector import (
ConnectionSelector)
class RoundRobinConnectionSelector(ConnectionSelector):
"""
A connection selector that just spreads work as evenly as possible.
"""
__slots__ = (
"_connections",
"_next_connection_index")
def __init__(self, connections: List[SCAMPConnection]):
"""
:param list(SCAMPConnection) connections:
The connections to be used
"""
self._connections = connections
self._next_connection_index = 0
[docs]
@overrides(ConnectionSelector.get_next_connection)
def get_next_connection(self, message: Any) -> SCAMPConnection:
index = self._next_connection_index
self._next_connection_index = (index + 1) % len(self._connections)
return self._connections[index]