MH DeprecateAttrsMixin (#3727)

* initial commit for deprecate_attrs

* completed tests

* added spaces

* test now works when tehre is more than one deprecation

* trying == instead of eq in jinja

* new approach to testing

* removed extraneous debug message

plugins/module_utils/mh/mixins/deprecate_attrs.py

@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+# (c) 2020, Alexei Znamensky <russoz@gmail.com>
+# Copyright: (c) 2020, Ansible Project
+# Simplified BSD License (see licenses/simplified_bsd.txt or https://opensource.org/licenses/BSD-2-Clause)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+
+from ansible.module_utils.basic import AnsibleModule
+
+
+class DeprecateAttrsMixin(object):
+
+    def _deprecate_setup(self, attr, target, module):
+        if target is None:
+            target = self
+        if not hasattr(target, attr):
+            raise ValueError("Target {0} has no attribute {1}".format(target, attr))
+        if module is None:
+            if isinstance(target, AnsibleModule):
+                module = target
+            elif hasattr(target, "module") and isinstance(target.module, AnsibleModule):
+                module = target.module
+            else:
+                raise ValueError("Failed to automatically discover the AnsibleModule instance. Pass 'module' parameter explicitly.")
+
+        # setup internal state dicts
+        value_attr = "__deprecated_attr_value"
+        trigger_attr = "__deprecated_attr_trigger"
+        if not hasattr(target, value_attr):
+            setattr(target, value_attr, {})
+        if not hasattr(target, trigger_attr):
+            setattr(target, trigger_attr, {})
+        value_dict = getattr(target, value_attr)
+        trigger_dict = getattr(target, trigger_attr)
+        return target, module, value_dict, trigger_dict
+
+    def _deprecate_attr(self, attr, msg, version=None, date=None, collection_name=None, target=None, value=None, module=None):
+        target, module, value_dict, trigger_dict = self._deprecate_setup(attr, target, module)
+
+        value_dict[attr] = getattr(target, attr, value)
+        trigger_dict[attr] = False
+
+        def _trigger():
+            if not trigger_dict[attr]:
+                module.deprecate(msg, version=version, date=date, collection_name=collection_name)
+                trigger_dict[attr] = True
+
+        def _getter(_self):
+            _trigger()
+            return value_dict[attr]
+
+        def _setter(_self, new_value):
+            _trigger()
+            value_dict[attr] = new_value
+
+        # override attribute
+        prop = property(_getter)
+        setattr(target, attr, prop)
+        setattr(target, "_{0}_setter".format(attr), prop.setter(_setter))

tests/integration/targets/module_helper/library/msimpleda.py

@@ -0,0 +1,64 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# (c) 2021, Alexei Znamensky <russoz@gmail.com>
+#
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+import collections
+__metaclass__ = type
+
+DOCUMENTATION = '''
+module: msimpleda
+author: "Alexei Znamensky (@russoz)"
+short_description: Simple module for testing DeprecationAttrsMixin
+description:
+  - Simple module test description.
+options:
+  a:
+    description: aaaa
+    type: int
+'''
+
+EXAMPLES = ""
+
+RETURN = ""
+
+from ansible_collections.community.general.plugins.module_utils.module_helper import ModuleHelper
+from ansible_collections.community.general.plugins.module_utils.mh.mixins.deprecate_attrs import DeprecateAttrsMixin
+
+
+class MSimpleDA(DeprecateAttrsMixin, ModuleHelper):
+    output_params = ('a',)
+    module = dict(
+        argument_spec=dict(
+            a=dict(type='int'),
+        ),
+    )
+
+    attr1 = "abc"
+    attr2 = "def"
+
+    def __init_module__(self):
+        self._deprecate_attr(
+            "attr2",
+            msg="Attribute attr2 is deprecated",
+            version="9.9.9",
+            collection_name="community.general",
+            target=self.__class__,
+            module=self.module,
+        )
+
+    def __run__(self):
+        if self.vars.a == 1:
+            self.vars.attr1 = self.attr1
+        if self.vars.a == 2:
+            self.vars.attr2 = self.attr2
+
+
+def main():
+    MSimpleDA.execute()
+
+
+if __name__ == '__main__':
+    main()

tests/integration/targets/module_helper/tasks/main.yml

@@ -4,3 +4,4 @@
 - include_tasks: msimple.yml
 - include_tasks: mdepfail.yml
 - include_tasks: mstate.yml
+- include_tasks: msimpleda.yml

tests/integration/targets/module_helper/tasks/msimpleda.yml

@@ -0,0 +1,37 @@
+# (c) 2021, Alexei Znamensky
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+- name: test msimpleda 1
+  msimpleda:
+    a: 1
+  register: simple1
+
+- name: assert simple1
+  assert:
+    that:
+      - simple1.a == 1
+      - simple1.attr1 == "abc"
+
+- name: test msimpleda 2
+  msimpleda:
+    a: 2
+  register: simple2
+
+- set_fact:
+    attr2_d:
+      msg: Attribute attr2 is deprecated
+      version: 9.9.9
+      collection_name: community.general
+    attr2_d_29:
+      msg: Attribute attr2 is deprecated
+      version: 9.9.9
+
+- name: assert simple2
+  assert:
+    that:
+      - simple2.a == 2
+      - simple2.attr2 == "def"
+      - '"deprecations" in simple2'
+      - attr2_depr_dict in simple2.deprecations
+  vars:
+    attr2_depr_dict: "{{ ((ansible_version.major, ansible_version.minor) < (2, 10))|ternary(attr2_d_29, attr2_d) }}"