Source code for spinnman.processes.send_single_command_process
# 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 Generic, Optional, TypeVar, Set
from spinnman.constants import SCP_TIMEOUT
from spinnman.messages.scp.abstract_messages import AbstractSCPResponse
from spinnman.messages.scp.abstract_messages import AbstractSCPRequest
from spinnman.messages.scp.enums.scp_result import SCPResult
from .abstract_multi_connection_process import AbstractMultiConnectionProcess
from .abstract_multi_connection_process_connection_selector import (
ConnectionSelector)
#: Type of responses.
#: :meta private:
R = TypeVar("R", bound=AbstractSCPResponse)
class SendSingleCommandProcess(AbstractMultiConnectionProcess, Generic[R]):
"""
A process that sends a single command and waits for a simple response.
"""
__slots__ = ("_response", )
def __init__(self, connection_selector: ConnectionSelector,
n_retries: int = 3, timeout: float = SCP_TIMEOUT,
non_fail_retry_codes: Optional[Set[SCPResult]] = None):
"""
:param ConnectionSelector connection_selector:
:param int n_retries:
The number of retries of a message to use. Passed to
:py:class:`SCPRequestPipeLine`
:param float timeout:
The timeout, in seconds. Passed to
:py:class:`SCPRequestPipeLine`
:param Optional[Set[SCPResult]] non_fail_retry_codes:
Optional set of responses that result in retry but after retrying
don't then result in failure even if returned on the last call.
"""
super().__init__(
connection_selector, n_retries=n_retries, timeout=timeout,
non_fail_retry_codes=non_fail_retry_codes)
self._response: Optional[R] = None
def __handle_response(self, response: R):
self._response = response
[docs]
def execute(self, request: AbstractSCPRequest[R]) -> R:
"""
:param AbstractSCPRequest request:
:rtype: AbstractSCPResponse
"""
with self._collect_responses():
self._send_request(request, self.__handle_response)
assert self._response is not None
return self._response