46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright (C) 2013 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.
|
|
|
|
import os
|
|
|
|
from taskflow.patterns import linear_flow as lf
|
|
from taskflow import task
|
|
|
|
|
|
class UnfortunateTask(task.Task):
|
|
def execute(self):
|
|
print('executing %s' % self)
|
|
boom = os.environ.get('BOOM')
|
|
if boom:
|
|
print('> Critical error: boom = %s' % boom)
|
|
raise SystemExit()
|
|
else:
|
|
print('> this time not exiting')
|
|
|
|
|
|
class TestTask(task.Task):
|
|
def execute(self):
|
|
print('executing %s' % self)
|
|
|
|
|
|
def flow_factory():
|
|
return lf.Flow('example').add(
|
|
TestTask(name='first'),
|
|
UnfortunateTask(name='boom'),
|
|
TestTask(name='second'))
|