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# -*- coding: utf-8 -*-
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2012 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 contextlib
import six
from taskflow.persistence.backends import impl_memory
from taskflow import task
ARGS_KEY = '__args__'
KWARGS_KEY = '__kwargs__'
ORDER_KEY = '__order__'
def make_reverting_task(token, blowup=False):
def do_revert(context, *args, **kwargs):
context[token] = 'reverted'
if blowup:
def blow_up(context, *args, **kwargs):
raise RuntimeError("I blew up")
return task.FunctorTask(blow_up, name='blowup_%s' % token)
else:
def do_apply(context, *args, **kwargs):
context[token] = 'passed'
return task.FunctorTask(do_apply, revert=do_revert,
name='do_apply_%s' % token)
class DummyTask(task.Task):
def execute(self, context, *args, **kwargs):
pass
if six.PY3:
RUNTIME_ERROR_CLASSES = ['RuntimeError', 'Exception',
'BaseException', 'object']
else:
RUNTIME_ERROR_CLASSES = ['RuntimeError', 'StandardError', 'Exception',
'BaseException', 'object']
class ProvidesRequiresTask(task.Task):
def __init__(self, name, provides, requires, return_tuple=True):
super(ProvidesRequiresTask, self).__init__(name=name,
provides=provides,
requires=requires)
self.return_tuple = isinstance(provides, (tuple, list))
def execute(self, *args, **kwargs):
if self.return_tuple:
return tuple(range(len(self.provides)))
else:
return dict((k, k) for k in self.provides)
class SaveOrderTask(task.Task):
def __init__(self, name=None, *args, **kwargs):
super(SaveOrderTask, self).__init__(name=name, *args, **kwargs)
self.values = EngineTestBase.values
def execute(self, **kwargs):
self.update_progress(0.0)
self.values.append(self.name)
self.update_progress(1.0)
return 5
def revert(self, **kwargs):
self.update_progress(0)
self.values.append(self.name + ' reverted(%s)'
% kwargs.get('result'))
self.update_progress(1.0)
class FailingTask(SaveOrderTask):
def execute(self, **kwargs):
self.update_progress(0)
self.update_progress(0.99)
raise RuntimeError('Woot!')
class NastyTask(task.Task):
def execute(self, **kwargs):
pass
def revert(self, **kwargs):
raise RuntimeError('Gotcha!')
class NastyFailingTask(NastyTask):
def execute(self, **kwargs):
raise RuntimeError('Woot!')
class TaskNoRequiresNoReturns(task.Task):
def execute(self, **kwargs):
pass
def revert(self, **kwargs):
pass
class TaskOneArg(task.Task):
def execute(self, x, **kwargs):
pass
def revert(self, x, **kwargs):
pass
class TaskMultiArg(task.Task):
def execute(self, x, y, z, **kwargs):
pass
def revert(self, x, y, z, **kwargs):
pass
class TaskOneReturn(task.Task):
def execute(self, **kwargs):
return 1
def revert(self, **kwargs):
pass
class TaskMultiReturn(task.Task):
def execute(self, **kwargs):
return 1, 3, 5
def revert(self, **kwargs):
pass
class TaskOneArgOneReturn(task.Task):
def execute(self, x, **kwargs):
return 1
def revert(self, x, **kwargs):
pass
class TaskMultiArgOneReturn(task.Task):
def execute(self, x, y, z, **kwargs):
return x + y + z
def revert(self, x, y, z, **kwargs):
pass
class TaskMultiArgMultiReturn(task.Task):
def execute(self, x, y, z, **kwargs):
return 1, 3, 5
def revert(self, x, y, z, **kwargs):
pass
class TaskMultiDictk(task.Task):
def execute(self):
output = {}
for i, k in enumerate(sorted(self.provides)):
output[k] = i
return output
class NeverRunningTask(task.Task):
def execute(self, **kwargs):
assert False, 'This method should not be called'
def revert(self, **kwargs):
assert False, 'This method should not be called'
class EngineTestBase(object):
values = None
def setUp(self):
super(EngineTestBase, self).setUp()
EngineTestBase.values = []
self.backend = impl_memory.MemoryBackend(conf={})
def tearDown(self):
EngineTestBase.values = None
with contextlib.closing(self.backend) as be:
with contextlib.closing(be.get_connection()) as conn:
conn.clear_all()
super(EngineTestBase, self).tearDown()
def _make_engine(self, flow, flow_detail=None):
raise NotImplementedError()
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