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MH deco: minor refactor (#8766)
* MH deco: minor refactor * adjustments and improvement in test * sanity fix * use func.__self__ * simplify use of self * add changelog frag
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3 changed files with 41 additions and 37 deletions
3
changelogs/fragments/8766-mh-deco-improve.yml
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3
changelogs/fragments/8766-mh-deco-improve.yml
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@ -0,0 +1,3 @@
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minor_changes:
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- MH module utils - add parameter ``when`` to ``cause_changes`` decorator (https://github.com/ansible-collections/community.general/pull/8766).
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- MH module utils - minor refactor in decorators (https://github.com/ansible-collections/community.general/pull/8766).
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@ -13,23 +13,26 @@ from functools import wraps
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from ansible_collections.community.general.plugins.module_utils.mh.exceptions import ModuleHelperException
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def cause_changes(on_success=None, on_failure=None):
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def cause_changes(on_success=None, on_failure=None, when=None):
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def deco(func):
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if on_success is None and on_failure is None:
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return func
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@wraps(func)
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def wrapper(*args, **kwargs):
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def wrapper(self, *args, **kwargs):
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try:
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self = args[0]
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func(*args, **kwargs)
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func(self, *args, **kwargs)
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if on_success is not None:
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self.changed = on_success
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elif when == "success":
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self.changed = True
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except Exception:
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if on_failure is not None:
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self.changed = on_failure
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elif when == "failure":
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self.changed = True
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raise
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finally:
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if when == "always":
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self.changed = True
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return wrapper
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@ -50,8 +53,6 @@ def module_fails_on_exception(func):
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try:
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func(self, *args, **kwargs)
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except SystemExit:
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raise
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except ModuleHelperException as e:
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if e.update_output:
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self.update_output(e.update_output)
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@ -73,6 +74,7 @@ def check_mode_skip(func):
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def wrapper(self, *args, **kwargs):
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if not self.module.check_mode:
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return func(self, *args, **kwargs)
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return wrapper
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@ -87,7 +89,7 @@ def check_mode_skip_returns(callable=None, value=None):
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return func(self, *args, **kwargs)
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return wrapper_callable
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if value is not None:
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else:
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@wraps(func)
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def wrapper_value(self, *args, **kwargs):
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if self.module.check_mode:
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@ -95,7 +97,4 @@ def check_mode_skip_returns(callable=None, value=None):
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return func(self, *args, **kwargs)
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return wrapper_value
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if callable is None and value is None:
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return check_mode_skip
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return deco
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@ -119,28 +119,22 @@ def test_variable_meta_change():
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assert vd.has_changed('d')
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class MockMH(object):
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changed = None
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def _div(self, x, y):
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return x / y
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func_none = cause_changes()(_div)
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func_onsucc = cause_changes(on_success=True)(_div)
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func_onfail = cause_changes(on_failure=True)(_div)
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func_onboth = cause_changes(on_success=True, on_failure=True)(_div)
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CAUSE_CHG_DECO_PARAMS = ['method', 'expect_exception', 'expect_changed']
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CAUSE_CHG_DECO_PARAMS = ['deco_args', 'expect_exception', 'expect_changed']
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CAUSE_CHG_DECO = dict(
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none_succ=dict(method='func_none', expect_exception=False, expect_changed=None),
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none_fail=dict(method='func_none', expect_exception=True, expect_changed=None),
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onsucc_succ=dict(method='func_onsucc', expect_exception=False, expect_changed=True),
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onsucc_fail=dict(method='func_onsucc', expect_exception=True, expect_changed=None),
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onfail_succ=dict(method='func_onfail', expect_exception=False, expect_changed=None),
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onfail_fail=dict(method='func_onfail', expect_exception=True, expect_changed=True),
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onboth_succ=dict(method='func_onboth', expect_exception=False, expect_changed=True),
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onboth_fail=dict(method='func_onboth', expect_exception=True, expect_changed=True),
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none_succ=dict(deco_args={}, expect_exception=False, expect_changed=None),
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none_fail=dict(deco_args={}, expect_exception=True, expect_changed=None),
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onsucc_succ=dict(deco_args=dict(on_success=True), expect_exception=False, expect_changed=True),
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onsucc_fail=dict(deco_args=dict(on_success=True), expect_exception=True, expect_changed=None),
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onfail_succ=dict(deco_args=dict(on_failure=True), expect_exception=False, expect_changed=None),
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onfail_fail=dict(deco_args=dict(on_failure=True), expect_exception=True, expect_changed=True),
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onboth_succ=dict(deco_args=dict(on_success=True, on_failure=True), expect_exception=False, expect_changed=True),
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onboth_fail=dict(deco_args=dict(on_success=True, on_failure=True), expect_exception=True, expect_changed=True),
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whensucc_succ=dict(deco_args=dict(when="success"), expect_exception=False, expect_changed=True),
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whensucc_fail=dict(deco_args=dict(when="success"), expect_exception=True, expect_changed=None),
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whenfail_succ=dict(deco_args=dict(when="failure"), expect_exception=False, expect_changed=None),
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whenfail_fail=dict(deco_args=dict(when="failure"), expect_exception=True, expect_changed=True),
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whenalways_succ=dict(deco_args=dict(when="always"), expect_exception=False, expect_changed=True),
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whenalways_fail=dict(deco_args=dict(when="always"), expect_exception=True, expect_changed=True),
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)
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CAUSE_CHG_DECO_IDS = sorted(CAUSE_CHG_DECO.keys())
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@ -150,12 +144,20 @@ CAUSE_CHG_DECO_IDS = sorted(CAUSE_CHG_DECO.keys())
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for param in CAUSE_CHG_DECO_PARAMS]
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for tc in CAUSE_CHG_DECO_IDS],
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ids=CAUSE_CHG_DECO_IDS)
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def test_cause_changes_deco(method, expect_exception, expect_changed):
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def test_cause_changes_deco(deco_args, expect_exception, expect_changed):
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class MockMH(object):
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changed = None
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@cause_changes(**deco_args)
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def div_(self, x, y):
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return x / y
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mh = MockMH()
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if expect_exception:
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with pytest.raises(Exception):
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getattr(mh, method)(1, 0)
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mh.div_(1, 0)
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else:
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getattr(mh, method)(9, 3)
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mh.div_(9, 3)
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assert mh.changed == expect_changed
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