From 2a376642ddc8be103e57eb688da86bfb71bf790a Mon Sep 17 00:00:00 2001
From: Alexei Znamensky <103110+russoz@users.noreply.github.com>
Date: Tue, 18 May 2021 06:28:21 +1200
Subject: [PATCH] ModuleHelper - better mechanism for customizing "changed"
 behaviour (#2514)

* better mechanism for customizing "changed" behaviour

* dont drink and code: silly mistake from late at night

* added changelog fragment
---
 changelogs/fragments/2514-mh-improved-changed.yml | 2 ++
 plugins/module_utils/mh/base.py                   | 8 +++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 changelogs/fragments/2514-mh-improved-changed.yml

diff --git a/changelogs/fragments/2514-mh-improved-changed.yml b/changelogs/fragments/2514-mh-improved-changed.yml
new file mode 100644
index 0000000000..b540600130
--- /dev/null
+++ b/changelogs/fragments/2514-mh-improved-changed.yml
@@ -0,0 +1,2 @@
+minor_changes:
+  - ModuleHelper module utils - improved mechanism for customizing the calculation of ``changed`` (https://github.com/ansible-collections/community.general/pull/2514).
diff --git a/plugins/module_utils/mh/base.py b/plugins/module_utils/mh/base.py
index 2a2dd88f7b..e0de7f2fdd 100644
--- a/plugins/module_utils/mh/base.py
+++ b/plugins/module_utils/mh/base.py
@@ -33,9 +33,15 @@ class ModuleHelperBase(object):
     def __quit_module__(self):
         pass
 
+    def __changed__(self):
+        raise NotImplementedError()
+
     @property
     def changed(self):
-        return self._changed
+        try:
+            return self.__changed__()
+        except NotImplementedError:
+            return self._changed
 
     @changed.setter
     def changed(self, value):