futurist/futurist/rejection.py

33 lines
1.2 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (C) 2015 Yahoo! Inc. All Rights Reserved.
#
# 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
#
# http://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.
"""Executor rejection strategies."""
import futurist
def reject_when_reached(max_backlog):
"""Returns a function that will raise when backlog goes past max size."""
def _rejector(executor, backlog):
if backlog >= max_backlog:
raise futurist.RejectedSubmission("Current backlog %s is not"
" allowed to go"
" beyond %s" % (backlog,
max_backlog))
return _rejector