ansible/test/units/executor/test_task_executor.py
James Cammarata d8ae4dfbf2 Adding aliases for field attributes and renaming async attribute (#33141)
* Adding aliases for field attributes and renaming async attribute

As of Python 3.7, the use of async raises an error, whereas before the use
of the reserved word was ignored. This adds an alias field for field attrs
so that both async and async_val (interally) work. This allows us to be
backwards-compatible with 3rd party plugins that may still reference Task.async,
but for the core engine to work on Py3.7+.

* Remove files fixed for 'async' usage from the python 3.7 skip list
2017-11-22 12:35:58 -08:00

486 lines
17 KiB
Python

# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from ansible.compat.tests import unittest
from ansible.compat.tests.mock import patch, MagicMock
from ansible.errors import AnsibleError, AnsibleParserError
from ansible.executor.task_executor import TaskExecutor
from ansible.playbook.play_context import PlayContext
from ansible.plugins.loader import action_loader, lookup_loader
from ansible.parsing.yaml.objects import AnsibleUnicode
from units.mock.loader import DictDataLoader
class TestTaskExecutor(unittest.TestCase):
def setUp(self):
pass
def tearDown(self):
pass
def test_task_executor_init(self):
fake_loader = DictDataLoader({})
mock_host = MagicMock()
mock_task = MagicMock()
mock_play_context = MagicMock()
mock_shared_loader = MagicMock()
new_stdin = None
job_vars = dict()
mock_queue = MagicMock()
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=mock_shared_loader,
rslt_q=mock_queue,
)
def test_task_executor_run(self):
fake_loader = DictDataLoader({})
mock_host = MagicMock()
mock_task = MagicMock()
mock_task._role._role_path = '/path/to/role/foo'
mock_play_context = MagicMock()
mock_shared_loader = MagicMock()
mock_queue = MagicMock()
new_stdin = None
job_vars = dict()
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=mock_shared_loader,
rslt_q=mock_queue,
)
te._get_loop_items = MagicMock(return_value=None)
te._execute = MagicMock(return_value=dict())
res = te.run()
te._get_loop_items = MagicMock(return_value=[])
res = te.run()
te._get_loop_items = MagicMock(return_value=['a', 'b', 'c'])
te._run_loop = MagicMock(return_value=[dict(item='a', changed=True), dict(item='b', failed=True), dict(item='c')])
res = te.run()
te._get_loop_items = MagicMock(side_effect=AnsibleError(""))
res = te.run()
self.assertIn("failed", res)
def test_task_executor_get_loop_items(self):
fake_loader = DictDataLoader({})
mock_host = MagicMock()
mock_task = MagicMock()
mock_task.loop_with = 'items'
mock_task.loop = ['a', 'b', 'c']
mock_play_context = MagicMock()
mock_shared_loader = MagicMock()
mock_shared_loader.lookup_loader = lookup_loader
new_stdin = None
job_vars = dict()
mock_queue = MagicMock()
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=mock_shared_loader,
rslt_q=mock_queue,
)
items = te._get_loop_items()
self.assertEqual(items, ['a', 'b', 'c'])
def test_task_executor_run_loop(self):
items = ['a', 'b', 'c']
fake_loader = DictDataLoader({})
mock_host = MagicMock()
def _copy(exclude_parent=False, exclude_tasks=False):
new_item = MagicMock()
return new_item
mock_task = MagicMock()
mock_task.copy.side_effect = _copy
mock_play_context = MagicMock()
mock_shared_loader = MagicMock()
mock_queue = MagicMock()
new_stdin = None
job_vars = dict()
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=mock_shared_loader,
rslt_q=mock_queue,
)
def _execute(variables):
return dict(item=variables.get('item'))
te._squash_items = MagicMock(return_value=items)
te._execute = MagicMock(side_effect=_execute)
res = te._run_loop(items)
self.assertEqual(len(res), 3)
def test_task_executor_squash_items(self):
items = ['a', 'b', 'c']
fake_loader = DictDataLoader({})
mock_host = MagicMock()
loop_var = 'item'
def _evaluate_conditional(templar, variables):
item = variables.get(loop_var)
if item == 'b':
return False
return True
mock_task = MagicMock()
mock_task.evaluate_conditional.side_effect = _evaluate_conditional
mock_play_context = MagicMock()
mock_shared_loader = None
mock_queue = MagicMock()
new_stdin = None
job_vars = dict(pkg_mgr='yum')
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=mock_shared_loader,
rslt_q=mock_queue,
)
# No replacement
mock_task.action = 'yum'
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, ['a', 'b', 'c'])
self.assertIsInstance(mock_task.args, MagicMock)
mock_task.action = 'foo'
mock_task.args = {'name': '{{item}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, ['a', 'b', 'c'])
self.assertEqual(mock_task.args, {'name': '{{item}}'})
mock_task.action = 'yum'
mock_task.args = {'name': 'static'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, ['a', 'b', 'c'])
self.assertEqual(mock_task.args, {'name': 'static'})
mock_task.action = 'yum'
mock_task.args = {'name': '{{pkg_mgr}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, ['a', 'b', 'c'])
self.assertEqual(mock_task.args, {'name': '{{pkg_mgr}}'})
mock_task.action = '{{unknown}}'
mock_task.args = {'name': '{{item}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, ['a', 'b', 'c'])
self.assertEqual(mock_task.args, {'name': '{{item}}'})
# Could do something like this to recover from bad deps in a package
job_vars = dict(pkg_mgr='yum', packages=['a', 'b'])
items = ['absent', 'latest']
mock_task.action = 'yum'
mock_task.args = {'name': '{{ packages }}', 'state': '{{ item }}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{ packages }}', 'state': '{{ item }}'})
# Maybe should raise an error in this case. The user would have to specify:
# - yum: name="{{ packages[item] }}"
# with_items:
# - ['a', 'b']
# - ['foo', 'bar']
# you can't use a list as a dict key so that would probably throw
# an error later. If so, we can throw it now instead.
# Squashing in this case would not be intuitive as the user is being
# explicit in using each list entry as a key.
job_vars = dict(pkg_mgr='yum', packages={"a": "foo", "b": "bar", "foo": "baz", "bar": "quux"})
items = [['a', 'b'], ['foo', 'bar']]
mock_task.action = 'yum'
mock_task.args = {'name': '{{ packages[item] }}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{ packages[item] }}'})
# Replaces
items = ['a', 'b', 'c']
mock_task.action = 'yum'
mock_task.args = {'name': '{{item}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, [['a', 'c']])
self.assertEqual(mock_task.args, {'name': ['a', 'c']})
mock_task.action = '{{pkg_mgr}}'
mock_task.args = {'name': '{{item}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
self.assertEqual(new_items, [['a', 'c']])
self.assertEqual(mock_task.args, {'name': ['a', 'c']})
# New loop_var
mock_task.action = 'yum'
mock_task.args = {'name': '{{a_loop_var_item}}'}
mock_task.loop_control = {'loop_var': 'a_loop_var_item'}
loop_var = 'a_loop_var_item'
new_items = te._squash_items(items=items, loop_var='a_loop_var_item', variables=job_vars)
self.assertEqual(new_items, [['a', 'c']])
self.assertEqual(mock_task.args, {'name': ['a', 'c']})
loop_var = 'item'
#
# These are presently not optimized but could be in the future.
# Expected output if they were optimized is given as a comment
# Please move these to a different section if they are optimized
#
# Squashing lists
job_vars = dict(pkg_mgr='yum')
items = [['a', 'b'], ['foo', 'bar']]
mock_task.action = 'yum'
mock_task.args = {'name': '{{ item }}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
# self.assertEqual(new_items, [['a', 'b', 'foo', 'bar']])
# self.assertEqual(mock_task.args, {'name': ['a', 'b', 'foo', 'bar']})
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{ item }}'})
# Retrieving from a dict
items = ['a', 'b', 'foo']
mock_task.action = 'yum'
mock_task.args = {'name': '{{ packages[item] }}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
# self.assertEqual(new_items, [['foo', 'baz']])
# self.assertEqual(mock_task.args, {'name': ['foo', 'baz']})
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{ packages[item] }}'})
# Another way to retrieve from a dict
job_vars = dict(pkg_mgr='yum')
items = [{'package': 'foo'}, {'package': 'bar'}]
mock_task.action = 'yum'
mock_task.args = {'name': '{{ item["package"] }}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
# self.assertEqual(new_items, [['foo', 'bar']])
# self.assertEqual(mock_task.args, {'name': ['foo', 'bar']})
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{ item["package"] }}'})
items = [
dict(name='a', state='present'),
dict(name='b', state='present'),
dict(name='c', state='present'),
]
mock_task.action = 'yum'
mock_task.args = {'name': '{{item.name}}', 'state': '{{item.state}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
# self.assertEqual(new_items, [dict(name=['a', 'b', 'c'], state='present')])
# self.assertEqual(mock_task.args, {'name': ['a', 'b', 'c'], 'state': 'present'})
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{item.name}}', 'state': '{{item.state}}'})
items = [
dict(name='a', state='present'),
dict(name='b', state='present'),
dict(name='c', state='absent'),
]
mock_task.action = 'yum'
mock_task.args = {'name': '{{item.name}}', 'state': '{{item.state}}'}
new_items = te._squash_items(items=items, loop_var='item', variables=job_vars)
# self.assertEqual(new_items, [dict(name=['a', 'b'], state='present'),
# dict(name='c', state='absent')])
# self.assertEqual(mock_task.args, {'name': '{{item.name}}', 'state': '{{item.state}}'})
self.assertEqual(new_items, items)
self.assertEqual(mock_task.args, {'name': '{{item.name}}', 'state': '{{item.state}}'})
def test_task_executor_execute(self):
fake_loader = DictDataLoader({})
mock_host = MagicMock()
mock_task = MagicMock()
mock_task.args = dict()
mock_task.retries = 0
mock_task.delay = -1
mock_task.register = 'foo'
mock_task.until = None
mock_task.changed_when = None
mock_task.failed_when = None
mock_task.post_validate.return_value = None
# mock_task.async_val cannot be left unset, because on Python 3 MagicMock()
# > 0 raises a TypeError There are two reasons for using the value 1
# here: on Python 2 comparing MagicMock() > 0 returns True, and the
# other reason is that if I specify 0 here, the test fails. ;)
mock_task.async_val = 1
mock_task.poll = 0
mock_play_context = MagicMock()
mock_play_context.post_validate.return_value = None
mock_play_context.update_vars.return_value = None
mock_connection = MagicMock()
mock_connection.set_host_overrides.return_value = None
mock_connection._connect.return_value = None
mock_action = MagicMock()
mock_queue = MagicMock()
shared_loader = None
new_stdin = None
job_vars = dict(omit="XXXXXXXXXXXXXXXXXXX")
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=shared_loader,
rslt_q=mock_queue,
)
te._get_connection = MagicMock(return_value=mock_connection)
te._get_action_handler = MagicMock(return_value=mock_action)
mock_action.run.return_value = dict(ansible_facts=dict())
res = te._execute()
mock_task.changed_when = MagicMock(return_value=AnsibleUnicode("1 == 1"))
res = te._execute()
mock_task.changed_when = None
mock_task.failed_when = MagicMock(return_value=AnsibleUnicode("1 == 1"))
res = te._execute()
mock_task.failed_when = None
mock_task.evaluate_conditional.return_value = False
res = te._execute()
mock_task.evaluate_conditional.return_value = True
mock_task.args = dict(_raw_params='foo.yml', a='foo', b='bar')
mock_task.action = 'include'
res = te._execute()
def test_task_executor_poll_async_result(self):
fake_loader = DictDataLoader({})
mock_host = MagicMock()
mock_task = MagicMock()
mock_task.async_val = 0.1
mock_task.poll = 0.05
mock_play_context = MagicMock()
mock_connection = MagicMock()
mock_action = MagicMock()
mock_queue = MagicMock()
shared_loader = MagicMock()
shared_loader.action_loader = action_loader
new_stdin = None
job_vars = dict(omit="XXXXXXXXXXXXXXXXXXX")
te = TaskExecutor(
host=mock_host,
task=mock_task,
job_vars=job_vars,
play_context=mock_play_context,
new_stdin=new_stdin,
loader=fake_loader,
shared_loader_obj=shared_loader,
rslt_q=mock_queue,
)
te._connection = MagicMock()
def _get(*args, **kwargs):
mock_action = MagicMock()
mock_action.run.return_value = dict(stdout='')
return mock_action
# testing with some bad values in the result passed to poll async,
# and with a bad value returned from the mock action
with patch.object(action_loader, 'get', _get):
mock_templar = MagicMock()
res = te._poll_async_result(result=dict(), templar=mock_templar)
self.assertIn('failed', res)
res = te._poll_async_result(result=dict(ansible_job_id=1), templar=mock_templar)
self.assertIn('failed', res)
def _get(*args, **kwargs):
mock_action = MagicMock()
mock_action.run.return_value = dict(finished=1)
return mock_action
# now testing with good values
with patch.object(action_loader, 'get', _get):
mock_templar = MagicMock()
res = te._poll_async_result(result=dict(ansible_job_id=1), templar=mock_templar)
self.assertEqual(res, dict(finished=1))